Liquid processing parts

Abstract

To provide a liquid treatment component in which the total number of screw members is reduced though more through-flow passages are provided, and which attains excellent cavitation efficiency by simplifying the layout of the screw members to be arranged in the respective through-flow passages.SOLUTION: A plurality of through-flow passages 9A, 9B are formed in a component body, and at least some of them have collision rods arranged thereon and thus are constituted as rod-mounted flow passages. In two or more of the collision rod-mounted flow passages adjacent to each other, the collision rods are formed as integrated collision rods arranged across the adjacent through-flow passages 9A, 9B in a form of penetrating a wall part forming a part of the component body.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This invention relates to a liquid processing component for subjecting a liquid in which a gas is dissolved to cavitation treatment.

Background Art

[0002] Various water treatment members have been proposed that provide a throttle portion in a water flow path using a venturi or an orifice, and precipitate dissolved air as fine bubbles due to the pressure reduction effect when water passes through at a high flow rate. In particular, the methods disclosed in Patent Documents 1 to 4 arrange a screw member in the middle of the flow path, and further increase the flow rate of the water flow in the screw groove or the gap formed between the opposing screw members, and it is claimed that the cavitation efficiency can be improved to generate nanobubbles at a higher density. Further, in Patent Documents 3 and 4, a configuration is disclosed in which a plurality of through-flow paths are provided in the water treatment member, and screw members are individually provided in each of them.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configurations described in Patent Documents 3 and 4, each of the multiple through-channels is individually provided with an independent screw member. However, this configuration presents problems when there are many through-channels, such as an increase in the number of independent screw members and a complexity in the layout of the screw members to be placed in each through-channel, thus limiting the number of through-channels.

[0005] The objective of the present invention is to provide a greater number of through-flow channels while reducing the total number of threaded members, and to simplify the layout of the threaded members for placement in each through-flow channel, thereby realizing a liquid processing component with superior cavitation efficiency in a simpler configuration. [Means for solving the problem]

[0006] To solve the above problems, the liquid processing component of the present invention is characterized in that a component body, whose first main surface is the liquid inlet end and whose second main surface is the liquid outlet end, has a plurality of through-flow channels formed in a through-shape connecting an inlet opening at the inlet end and an outlet opening at the outlet end, two or more of the plurality of through-flow channels are collision rod channels in which collision rods having cavitation irregularities on their outer circumferential surface are arranged, and in two or more adjacent collision rod channels, the collision rods form an integrated collision rod that spans the adjacent through-flow channels by penetrating a wall portion that forms part of the component body that demarcates the adjacent through-flow channels.

[0007] According to the configuration of the liquid processing component of the present invention described above, multiple through-channels are formed in the component body, and at least some of these are configured as channels with impact rods, with impact rods positioned in each channel. In two or more adjacent channels with impact rods, the impact rods are formed as a single impact rod that penetrates a wall portion forming part of the component body and spans across the adjacent through-channels. This allows one impact rod to serve two or more through-channels, reducing the total number of threaded members. Furthermore, it becomes possible to simplify the layout of the threaded members to be placed in each through-channel.

[0008] The cavitation undulations can be formed as male threads on the outer surface of the impact rod, and the integrated impact rod can be configured as a threaded member that is screwed into the component body from the circumferential side of the component body in a direction intersecting the axial direction of the through-flow channel. By configuring the impact rod as a threaded member, the effect of increasing flow velocity in the thread valleys becomes significant, and the cavitation effect can be enhanced.

[0009] The main body of the component can have a screw insertion hole for inserting a screw member, which is formed on the circumferential surface and passes through a series of adjacent through-flow channels. The inner circumferential surface of the screw insertion hole and the inner circumferential surface of the leg tip receiving recess can be configured such that only a portion of the screw member insertion direction has a female thread that engages with the male thread formed on the screw member, while the remaining portion can be a cylindrical surface with a larger diameter than the male thread. With this configuration, since the female thread is formed only in a portion of the screw insertion hole for inserting the integrated impact rod, the process of machining the female thread in the screw insertion hole can be simplified. In addition, since the portion where the female thread is not formed (the remaining portion) is a cylindrical surface with a larger diameter than the male thread, the length of the threaded section between the male and female threads when screwing the screw member into the screw insertion hole is reduced, thereby reducing the resistance when assembling the screw.

[0010] In this case, a leg tip receiving recess can be formed as part of the screw insertion hole on the inner surface of the through-flow channel furthest from the circumferential surface, for accommodating the leg tip of the screw member inserted into the screw insertion hole. The inner surface of the screw insertion hole can then be configured so that only the inner surface of the leg tip receiving recess is a female thread. With this configuration, in addition to the effect of reducing resistance when assembling the screw, a new effect can be achieved in which the positioning accuracy of the screw member in a direction perpendicular to the axis can be improved by screwing the leg tip into the female thread.

[0011] The material of the component body is not particularly limited, but the component body can be made of resin, for example. In this case, a screw insertion hole can be formed as described above, and the impact rod can be integrated with the resin body by insert molding. By adopting an integrated impact rod, the positioning accuracy of the impact rod to each through-flow channel can be improved compared to a configuration in which impact rods are arranged separately for two or more through-flow channels.

[0012] The component body can be formed in a cylindrical shape, and multiple through-channels can be formed to penetrate the component body in the direction of its central axis. In this case, multiple first through-channels, each with a cross-sectional center at a first distance from the central axis in the radial direction, and multiple second through-channels, each with a cross-sectional center at a second distance greater than the first distance, can be formed around the central axis. The integrated impact rod can be positioned to span across pairs of first and second through-channels located at the same angular position around the central axis. By arranging the first through-channels radially inward and the second through-channels radially outward around the axis of the cylindrical component body, the flow that tends to concentrate in the inner region of the pipeline where the component body is placed can be forcibly distributed to the outer region of the pipeline where the flow velocity tends to decrease due to the effect of pipe wall friction. As a result, the flow velocity difference between the first and second through-channels, which are formed at different radial positions, can be reduced, and a good cavitation effect can be achieved in both the inner (first through-channel) and outer second through-channels within the pipeline.

[0013] In this case, multiple first and second through-channels can be provided at equal angular intervals and the same angular positions around the central axis. In this case, the integrated impact rod can be positioned across pairs of first and second through-channels that are located at corresponding angular positions around the central axis. In this configuration, the impact rods for all first and second through-channels can be formed as integrated impact rods, further contributing to the simplification of the liquid processing component.

[0014] On the other hand, it is also possible to arrange a larger number of second through-flow paths than the first through-flow paths around the central axis. By doing so, the effect of forcibly distributing the flow to the outer region of the pipeline can be enhanced. In this case, some of the second through-flow paths are formed at angular positions corresponding to each other with respect to the first through-flow paths, and the integral collision rod may be arranged so as to straddle the pair of the first through-flow path and the second through-flow path existing at the corresponding angular positions.

Advantages of the Invention

[0015] Details of the operation and effects of the present invention have already been described in the section of "Means for Solving the Problems", and thus will not be repeated here.

Brief Description of the Drawings

[0016] [Figure 1] A cross-sectional view showing an embodiment of the liquid processing component of the present invention in a state assembled to a nozzle casing forming a pipeline. [Figure 2] A perspective view showing the liquid processing component taken out from FIG. 1. [Figure 3] A view showing details of the component body of the liquid processing component in FIG. 2. [Figure 4] A view showing a state where a screw member forming an integral collision rod is assembled to the component body in FIG. 3 to form a liquid processing component. [Figure 5] A cross-sectional view showing a configuration example in which a female screw portion is formed only in a leg tip accommodating recess on the inner peripheral surface of a screw insertion hole of a screw member forming an integral collision rod. [Figure 6] A cross-sectional view showing a configuration example in which a female screw portion is also formed in an intermediate section of the inner peripheral surface of a screw insertion hole of a screw member forming an integral collision rod. [Figure 7] A cross-sectional view showing an embodiment in which two or more liquid processing components are assembled in a state of being stacked on a casing forming a pipeline. [Figure 8] In the structure of FIG. 7, a cross-sectional view showing the stacked liquid processing components taken out. [Figure 9] A view showing a modification example in which a central through-hole is omitted from the liquid processing component in FIG. 4. [Figure 10]A diagram showing a modified example in which the central flow hole of the liquid processing part in FIG. 4 is divided into a plurality of holes. [Figure 11] A diagram showing a modified example in which the number of the first through-flow paths is thinned out in the configuration of the liquid processing part in FIG. 4. [Figure 12] A diagram showing a modified example in which the number around the axis of the first through-flow path and the second through-flow path is reduced to four in the configuration of the liquid processing part in FIG. 4. [Figure 13] A diagram showing the configuration of a liquid processing part in which an integral collision rod is integrally formed with a part main body by insert molding. [Figure 14] A plan view showing a configuration example of a liquid processing part with a rectangular part main body.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an example of a liquid processing nozzle obtained by incorporating a liquid processing part according to an embodiment of the present invention. The liquid processing nozzle 1000 includes a nozzle casing 50 having a through-form casing flow path portion 56 with an inflow-side opening 54 formed at one end and an outflow-side opening 55 formed at the other end. Connection joints 51 and 52 to a water pipe (not shown) or the like are formed at the formation-side ends of the inflow-side opening 54 and the outflow-side opening 55 of the nozzle casing 50. The nozzle casing 50 is a metal pipe member, the connection joint 52 on the inflow side is a female screw joint having a tool engagement portion 53 formed on the outer peripheral surface, and the connection joint 51 on the outflow side is a male screw joint.

[0018] In this embodiment, the nozzle casing 50 consists of two parts: a cylindrical outlet-side main body portion 50b and an inlet-side retaining member 50a with a tool engagement portion 53 formed on its outer circumferential surface. A female thread portion 50c is formed on the inner circumferential surface of the inlet-side opening of the main body portion 50b. On the other hand, a male thread portion 50d is formed on the outer circumferential surface of the outlet-side end of the retaining member 50a, and an O-ring 50e is fitted at its base end. No threads are formed on the outer circumferential surface of the base end of the male thread portion 50d into which the O-ring 50e is fitted, nor on the inner circumferential surface of the opening end side of the female thread portion 50c of the main body portion 50b, and the amount of gap is adjusted so that the O-ring 50e is compressed radially at that position. Furthermore, the thread lengths of the female thread portion 50c and the male thread portion 50d are set so that when the retaining member 50a is tightened onto the main body portion 50b, the edge of the tool engagement portion 53 overlaps with the edge of the main body portion 50b.

[0019] On the axial side of the female thread portion 50c of the main body portion 50b, an enlarged diameter portion 56a is formed by increasing the inner diameter with a stepped surface 56b, and a cylindrical liquid processing component 1 is mounted coaxially in a gap-fit ​​configuration. The male thread portion 50d of the retaining member 50a is screwed into the female thread portion 50c of the main body portion 50b to prevent the liquid processing component 1 from coming loose in the axial direction. A flow straightening member 63 is fitted to the inside of the outlet end of the main body portion 50b.

[0020] Figure 2 is a perspective view showing the external appearance of the liquid processing component 1. The liquid processing component 1 has a component body 1M, the first main surface MP1 being the liquid inlet end and the second main surface MP2 being the liquid outlet end. Multiple through-channels 9A and 9B are formed in the component body 1M, connecting the inlet opening at the inlet end and the outlet opening at the outlet end.

[0021] Figure 3 shows a plan view and a cross-sectional view of the component body 1M, and Figure 4 shows the component body 1M with the impact rod 10f (screw member 10) assembled to form the liquid processing component 1. The material of the component body 1M is, for example, a resin such as ABS (acrylonitrile butadiene styrene), nylon, polycarbonate, polyacetal, PTFE (polytetrafluoroethylene), or Duracon (trademark name), but it may also be a metal such as stainless steel or brass, or a ceramic such as alumina. The screw member can be made of a metal such as stainless steel or titanium (or titanium alloy), or an inorganic material such as alumina, zirconia, quartz, or glass.

[0022] In the liquid processing member 1, the multiple through-channels 9A and 9B, excluding the central flow velocity adjustment passage 12, are configured as channels with impact rods, each having an impact rod 10f with cavitation irregularities 10t on its outer surface. The impact rod 10f penetrates a wall portion that forms part of the component body 1M that separates the adjacent through-channels 9A and 9B, forming an integrated impact rod that spans across these adjacent through-channels 9A and 9B.

[0023] In this embodiment, the cavitation irregularities 10t are male threaded portions 10t formed on the outer circumferential surface of the impact rod 10f. The integral impact rod 10f is configured as a threaded member 10 that is screwed into the component body 1M from the circumferential surface of the component body 1M in a direction intersecting the axial direction of the through-flow channels 9A and 9B, and its legs form the integral impact rod 10f (hereinafter also referred to as leg portion 10f). Note that the cavitation irregularities are not limited to helical threads, but may also be irregularities formed in a scattered dot pattern.

[0024] As shown in Figure 5, the main body of the component 1M has a screw insertion hole 19 for inserting a screw member 10, which opens into the circumferential surface PP1. The screw insertion hole 19 is formed to sequentially penetrate a plurality of adjacent through-flow channels 9A and 9B. On the inner circumferential surface of the screw insertion hole 19, only a portion in the insertion direction of the screw member 10 is a female screw portion 19t that screws into the male screw portion 10t formed on the screw member 10, while the remaining portion is a cylindrical surface 19f1, 19f2 with a larger diameter than the male screw portion 10t.

[0025] In Figure 5, the component body 1M has a leg tip receiving recess 19f3 formed as part of the screw insertion hole 19 on the inner surface of the through-flow channel 9B furthest from the circumferential surface PP1, which accommodates the leg tip of the screw member 10 inserted into the screw insertion hole 19. The screw insertion hole 19 has a female thread portion 19t only on the inner surface of the leg tip receiving recess 19f3. Furthermore, a counterbore 19h is formed on the opening side of the screw insertion hole 19 toward the circumferential surface PP1 to accommodate the screw head 10h of the screw member 10 that is screwed in from the opening side.

[0026] As shown in Figure 4, the component body 1M is formed in a cylindrical shape, and multiple through-channels 9A and 9B are formed to penetrate the component body 1M in the direction of the central axis O. Specifically, multiple first through-channels 9B, whose cross-sectional centers are located at a first distance radially from the central axis O, and multiple second through-channels 9A, whose cross-sectional centers are located at a second distance greater than the first distance, are each formed around the central axis O. The integrated impact rod 10f is positioned to span across pairs of first through-channels 9B and second through-channels 9A located at the same angular position around the central axis O. Multiple first through-channels 9B and second through-channels 9A are provided around the central axis O at equal angular intervals (45° in this case) and at the same angular position (eight in this case).

[0027] When the liquid treatment nozzle 1000 shown in Figure 1 is attached to a water pipe and water is flowed from the side of the connecting joint 52, the water flows through the through-channels 9A and 9B and the flow velocity adjustment passage 12 of the liquid treatment member 1, and comes into contact with the male threaded portion 10t (cavitation uneven portion) of each threaded member 10 (impact rod 10f) provided in the through-channels 9A and 9B. The water flow is accelerated in the threaded valleys, causing cavitation, and the resulting pressure reduction effect causes dissolved air to precipitate as fine bubbles (nanobubbles).

[0028] The screw member 10 (impact rod 10f) is formed as an integrated impact rod 10f that spans the adjacent through-flow channels 9A and 9B, penetrating a wall portion that forms part of the component body 1M that separates the two adjacent through-flow channels 9A and 9B. Since one impact rod 10f is responsible for two or more through-flow channels 9A and 9B, the total number of screw members 10 is reduced. Furthermore, the layout of the screw members 10 for placement in each through-flow channel 9A and 9B is simplified.

[0029] Furthermore, as shown in Figure 5, since the female thread portion 19t is formed only in a portion of the screw insertion hole 19 for inserting the integrated impact rod 10f, the process of machining the female thread in the screw insertion hole 19 can be simplified. In addition, the portion where the female thread portion 19t is not formed (the remaining portion) is made of cylindrical surfaces 19f1 and 19f2 with a larger diameter than the male thread portion 10t, so the length of the threaded section between the male thread portion 10t and the female thread portion 19t when screwing the screw member 10 into the screw insertion hole 19 is reduced, contributing to a reduction in resistance when assembling the screw.

[0030] Furthermore, a leg tip receiving recess 19f3 for accommodating the leg tip of the screw member 10 is formed as part of the screw insertion hole 19, and only the inner circumferential surface of the leg tip receiving recess 19f3 is the female thread portion 19t. As a result, the leg tip of the screw member 10 screws into the female thread portion 19t, thereby improving the positioning accuracy in a direction perpendicular to the axis O.

[0031] The following describes various modified embodiments of the liquid processing component of the present invention. Figure 6 shows an example in which a female thread portion 19t is also formed in the intermediate section 19f2' of the screw insertion hole 19 formed in the component body 1M.

[0032] Figures 7 and 8 show an example in which two (or more) liquid processing components 1P and 1S are assembled to the nozzle casing 50 while overlapping each other, with all through-channels 9A and 9B and the flow velocity adjustment passage 12 overlapping. As shown in Figure 8, engaging protrusions 1C and engaging recesses 1V for aligning the through-channels 9A and 9B and the flow velocity adjustment passage 12 are formed on the overlapping main surfaces of the liquid processing components 1P and 1S, respectively.

[0033] The liquid processing component 100 in Figure 9 shows a configuration in which the flow velocity adjustment passage 12 is omitted from the liquid processing component 1 in Figure 4. Furthermore, the liquid processing component 200 in Figure 10 corresponds to a configuration in which the flow velocity adjustment passage 12 formed in the liquid processing component 1 in Figure 4 is replaced with four smaller diameter flow velocity adjustment passages 12'.

[0034] On the other hand, as shown in the liquid processing component 300 in Figure 11, it is also possible to arrange a numerically larger number of second through-channels 9A than first through-channels 9B around the central axis O. For example, the eight second through-channels 9B in Figure 4 can be reduced to every other one. The screw member 10 (integrated impact rod) is positioned across pairs of first through-channels 9B and second through-channels 9A located at corresponding angular positions to each other. For the remaining four second through-channels 9A that do not form pairs with the first through-channels 9B, a screw member 10' shorter than the screw member 10 forming the integrated impact rod is screwed in. Furthermore, the liquid processing component 400 in Figure 12 shows a configuration in which the second through-channels 9A and first through-channels 9B are reduced to four each from the configuration in Figure 4.

[0035] The liquid processing component 500 in Figure 13 is an example in which an integrated impact rod 10f' is integrated with the resin body by insert molding. The integrated impact rod 10f' has a male threaded portion formed on its outer surface, but it does not have a threaded head.

[0036] Furthermore, in the liquid processing component 600 shown in Figure 14, the main body 600M is formed in a rectangular shape, and two first through-channels 9B and two second through-channels 9A are formed through it in a rectangular layout. A screw member 10, which forms an integral impact rod, is inserted through each pair of first through-channels 9B and second through-channels 9A. [Explanation of symbols]

[0037] 1,100~600 Liquid Processing Parts 1M, 600M main component 9A, 9B Through-channel 9B First through channel 9A Second through-flow channel 10 Screw member 10t Male thread section (cavitation-induced uneven surface) 19 Screw insertion holes 19t female thread 19f1, 19f2 Cylindrical surface MP1 first principal surface MP2 second principal surface

Claims

1. The main body of the component has a first main surface that serves as the liquid inlet end and a second main surface that serves as the liquid outlet end. Multiple through-channels are formed in a through-type configuration that connects an inlet opening at the inlet end to an outlet opening at the outlet end. A liquid processing component characterized in that two or more of the multiple through-flow channels are collision-rod-equipped channels in which collision rods having cavitation irregularities on their outer circumferential surfaces are arranged, and in two or more adjacent collision-rod-equipped channels, the collision rods form an integrated collision rod that spans the adjacent through-flow channels by penetrating through a wall portion that forms part of the component body that demarcates the adjacent through-flow channels.

2. The liquid processing component according to claim 1, wherein the cavitation uneven portion is a male threaded portion formed on the outer circumferential surface of the impact rod, and the integral impact rod is configured as a threaded member that is screwed into the component body from the circumferential surface of the component body in a direction intersecting the axial direction of the through-flow channel.

3. The main body of the component has a screw insertion hole for inserting the screw member, which is formed on the circumferential surface and sequentially penetrates a plurality of adjacent through-flow channels, The liquid processing component according to claim 2, wherein the inner circumferential surface of the screw insertion hole is such that only a portion of it in the insertion direction of the screw member is a female screw portion that engages with the male screw portion formed on the screw member, and the remaining portion is a cylindrical surface with a larger diameter than the male screw portion.

4. The liquid processing component according to claim 3, wherein a leg tip receiving recess for accommodating the leg tip of the screw member inserted into the screw insertion hole is formed as part of the screw insertion hole on the inner circumferential surface of the through-flow channel furthest from the circumferential surface, and on the inner circumferential surface of the screw insertion hole, only the inner circumferential surface of the leg tip receiving recess is the female screw portion.

5. The liquid processing component according to claim 1, wherein the component body is made of resin, and the impact rod is integrated with the resin body by insert molding.

6. The liquid processing component according to any one of claims 1 to 5, wherein the component body is formed in a cylindrical shape, and each of the multiple through-channels is formed to penetrate the component body in the direction of the central axis, and each of the multiple first through-channels is formed around the central axis, the first having its cross-sectional center at a first distance from the central axis in the radial direction, and the second having its cross-sectional center at a second distance greater than the first distance, and the integral impact rod is arranged to span across pairs of the first through-channels and the second through-channels that are located at the same angular position around the central axis.

7. The liquid processing component according to claim 6, wherein multiple first through-channels and second through-channels are provided at equal angular intervals and the same angular position around the central axis, and the integrated impact rod is arranged to span across pairs of the first through-channels and second through-channels located at corresponding angular positions around the central axis.

8. The liquid processing component according to claim 6, wherein the second through-flow channels are arranged in numerically greater numbers than the first through-flow channels around the central axis, a portion of the second through-flow channels are formed at angular positions corresponding to each other with respect to the first through-flow channels, and the integrated impact rod is arranged to span across the pair of first through-flow channels and second through-flow channels located at those corresponding angular positions.

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