JP6661966B2 - Underwater impurity separator and cooling water circulation system including the same - Google Patents

Description

The present invention relates to an underwater impurity separator and a cooling water circulation system including the same, and more particularly, to an underwater impurity separator that separates impurities contained in water by a separating action of a plurality of separation materials in a separator body, and includes the same. The present invention relates to a cooling water circulation system.

As a conventional underwater impurity separator, for example, as shown in FIGS. 10 and 11, a cylindrical separator body 102, a plurality of separation materials 103 housed in the separator body 102, An inflow nozzle 104 and an outflow nozzle 105 provided on the outer peripheral side are provided. A bottom portion 106 at one axial end of the separator main body 102 has a discharge portion for discharging impurities C separated and precipitated by the separation material 103. An underwater impurity separator 101 in which an outlet 107 is formed is known (for example, see Patent Document 1). In the underwater impurity separator 101, the inflow nozzle 104 and the outflow nozzle 105 are arranged such that their respective axes 104a, 105a are along a reference line L orthogonal to the axis 102a of the separator body 102. As a result, the water flowing in from the inflow nozzle 104 flows with strong straightness in the separator main body 102 and flows out from the outflow nozzle 105. Further, the water flowing in the separator main body 102 is subjected to collision and separation by centrifugal force by the plurality of separating materials 103, so that the impurities C contained in the water are separated and settle on the bottom 106 of the separator main body 102, The precipitated impurities are discharged from the discharge port 107 at an appropriate time.

JP 2013-59733 A

However, in the above-mentioned conventional underwater impurity separator 101, the inflow nozzle 104 and the outflow nozzle 105 flow in the separator main body 102 because their respective axes 104a, 105a are arranged along the reference line L. The straightness of the water is strong, and the pressing force for pushing down the impurity C separated by the separation material 103 is unlikely to act. Therefore, many of the separated impurities C cannot reach the bottom 106 of the separator main body 102 and remain as residues in the respective separation members 103. As a result, the pressure loss in the separator main body 102 increases, and when a water supply pump is used, an overload occurs in the pump.

Further, in the above-described conventional underwater impurity separator 101, the separator main body 102 whose upper portion is sealed is employed. However, since cavitation occurs when water passes through the plurality of separation materials 103, the inside of the separator main body 102 Air easily accumulates in the air, which impedes the water flow and adversely affects the separation accuracy. Further, Patent Document 1 discloses that by providing a large number of separation materials 103 of the same size in the separator main body 102, separation accuracy capable of removing impurities having a fine particle size of about 7 microns can be exhibited. However, even higher separation accuracy is required. For example, in a chiller circulating water system under severe conditions (that is, a secondary cooling circulation (cold water or hot water region)) system, a separation accuracy capable of removing impurities having a fine particle size of about 3 microns or less is required.

  In the cooling tower circulating water and chiller circulating water used in factory equipment, etc., scale adhesion, accumulation and flow paths in mold cooling holes, cooling pipes, heat exchangers, etc. due to the deterioration of the quality of the cooling water Blockage / corrosion / rust / water leakage / slime / algae etc. are occurring. As a result, the quality of the molded product becomes unstable (the mold cannot be maintained at a constant temperature; silver defects are likely to occur due to insufficient cooling), and power and energy are wasted (consumption due to a decrease in the heat exchange rate of the heat exchanger). Increase in power; increase in CO2 emissions; increase in high-pressure troubles in heat exchangers); increase in facility management costs (increase in electricity charges for facilities; increase in chemical cleaning costs; increase in cleaning maintenance costs). Problems occur. Therefore, when circulating the cooling water with improved water quality, it is desired to develop a cooling water circulation system that can effectively remove impurities contained in the cooling water and maintain the water quality.

The present invention has been made in view of the above-mentioned circumstances, and an underwater impurity separator that can surely precipitate impurities separated by a plurality of separation materials at a bottom in a separator body, and a cooling water circulation system including the same. The purpose is to provide.

In order to solve the above-described problem, the invention according to claim 1 causes a cylindrical separator main body, a plurality of separation materials accommodated in the separator main body, and water to flow into the separator main body. An inflow nozzle provided on the outer peripheral side of the separator main body, and an outflow nozzle provided on the outer peripheral side of the separator main body so as to allow water to flow out from the inside of the separator main body. An underwater impurity separator in which an outlet for discharging impurities separated and settled by the separating material is formed at a bottom portion at one end in the axial direction, wherein the inflow nozzle has an axial center thereof. The separator is disposed so as to be parallel to a reference line orthogonal to the axis of the separator main body when viewed from one axial end of the separator main body, and the outflow nozzle has an axis which is the same as that of the inflow nozzle. From the axis to the bottom of the separator body in the axial direction. The first separating member having a cylindrical first separating member body, and a cylindrical second separating member body having a smaller diameter than the first separating member body. A plurality of water inlets are formed in each of the first separating material main body and the second separating material main body in a circumferential direction, and the separation is provided on an edge side of each of the water inlets. The gist is that a water flow regulating plate extending inside the material main body is provided.
According to a second aspect of the present invention, in the first aspect of the present invention, the parallel distance between the axis of each of the inflow nozzle and the outflow nozzle in the axial direction of the separator body is equal to the outer diameter of the inflow nozzle. The gist is that the size is 0.8 to 1.2 times.
According to a third aspect of the present invention, in the first or second aspect of the invention, the outflow nozzle is arranged so that an axis thereof is along the reference line, and each of the inflow nozzle and the outflow nozzle The gist of the invention is that the parallel spacing of the axis from the one end side of the separator body in the axial direction is 0.8 to 1.2 times the outer diameter of the inflow nozzle.
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the air inside the separator main body is evacuated to an upper portion on one axial end side of the separator main body. The gist is that an air vent valve is provided.
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, a total mass of the plurality of the first separation members and the second separation members accommodated in the separator main body is provided. In contrast, the gist is that the mass ratio of the plurality of first separation members is 60 to 80% and the mass ratio of the plurality of second separation members is 20 to 40%.
In order to solve the above problem, the invention according to claim 6 includes a circulation path that connects the cooling tower and the chiller, and circulates cooling water between the cooling tower and the chiller via the circulation path. a cooling water circulation system which, wherein the pipe constituting the circulation path, water according to any one of claims 1 to 5 to remove impurities contained in the cooling water circulating in the circulation path The gist is that an impurity separator is connected .
In order to solve the above-mentioned problem, the invention according to claim 7 includes a circulation path that connects a chiller and a cooling target unit, and cooling water is provided between the chiller and the cooling target unit via the circulation path. 6. A cooling water circulation system for circulating water, wherein piping included in the circulation path is configured to remove impurities contained in cooling water circulating in the circulation path. 7. The gist is that an underwater impurity separator is connected.

According to the in-water impurity separator of the present invention, the inflow nozzle is arranged such that its axis is parallel to a reference line orthogonal to the axis of the separator main body when viewed from one axial end of the separator main body. The outlet nozzle is disposed such that its axis is located closer to the bottom in the axial direction of the separator body than the axis of the inlet nozzle. Thereby, the water flowing in from the inflow nozzle flows downward spirally in the separator main body and flows out from the outflow nozzle. This downward spiral water flow increases the separation area, and applies a downward pressing force to the impurities separated by the plurality of separation materials, so that the impurities are surely settled at the bottom in the separator body. Can be done. As a result, an increase in pressure loss in the separator main body is suppressed, and even when the water supply pump is provided, the pump is not overloaded.
Further, the separation member includes a first separation member including a cylindrical first separation member body, and a second separation member including a cylindrical second separation member body having a smaller diameter than the first separation member body. In this case, the separation accuracy can be further improved by mixing the plurality of first separation materials and the second separation materials having different outer diameters and storing them in the separator body.
In addition, when the parallel spacing in the axial direction of the separator body between the respective axial centers of the inflow nozzle and the outflow nozzle is 0.8 to 1.2 times the outer diameter of the inflow nozzle, separation is performed. The number of rotations of the spiral water flow in the vessel main body can be reduced to an appropriate minimum (for example, approximately one and a half rotations). Therefore, it is possible to achieve a good balance between suppression of an increase in pressure loss and effective separation and precipitation of impurities.
Further, the outflow nozzle is arranged so that its axis is along the reference line, and a parallel interval between each axis of the inflow nozzle and the outflow nozzle as viewed from one axial end of the separator body. However, when the outer diameter of the inflow nozzle is 0.8 to 1.2 times the outer diameter, the number of rotations of the spiral water flow in the separator main body is appropriately reduced to a necessary minimum (for example, approximately One and a half rotations). Therefore, the suppression of the increase in pressure loss and the effective separation and precipitation of impurities can be achieved in a well-balanced manner.
When an air vent valve for bleeding air in the separator main body is provided above the one end side in the axial direction of the separator main body, there is no air pool in the separator main body, Water flows smoothly inside.
Further, a ratio of the mass of the plurality of first separation members to the total mass of the plurality of first separation members and the second separation members accommodated in the separator main body is 60 to 80%, When the mass ratio of the plurality of second separation materials is 20 to 40%, the plurality of first separation materials and the second separation materials having different outer diameters are mixed at a specific mixing ratio, and are mixed in the separator main body. By accommodating, the suppression of increase in pressure loss and the improvement of separation accuracy can be achieved in a well-balanced manner.
According to the cooling water circulation system of the present invention, the above-described underwater impurity separator for removing impurities contained in the cooling water circulating in the circulation path is provided. Thereby, when circulating the cooling water with improved water quality, impurities contained in the cooling water are effectively removed by the underwater impurity separator, and the quality of the cooling water can be maintained.

The invention will be further described in the following detailed description, given by way of non-limiting example of an exemplary embodiment according to the invention and with reference to the referenced figures, wherein like reference numerals are used to refer to the figures. Similar parts are shown throughout the several figures.
It is the side view which made a part of underwater impurity separator concerning an example a section. It is a top view of the above-mentioned underwater impurity separator. It is a longitudinal section of an air bleeding valve concerning an example, (a) shows a state where a float rises by the action of water and abuts on a valve seat, and (b) shows a state where a float descends and air is exhausted. Indicates a state in which It is a perspective view of the 1st separation material and the 2nd separation material concerning an example. It is a side view of the above-mentioned separation material. FIG. 6 is a sectional view taken along line VI-VI of FIG. 5. It is operation | movement explanatory drawing of the said underwater impurity separator, (a) shows the principal part side view, (b) shows a top view. It is a schematic diagram of a cooling water circulation system according to an example. It is explanatory drawing of the example of an experiment of the said cooling water circulation system. It is the side view which made a part of conventional underwater impurity separator the cross section. It is a top view of the above-mentioned conventional underwater impurity separator.

  The matters shown here are for the purpose of exemplifying the exemplary embodiments and the embodiments of the present invention, and should be described so that the principles and conceptual features of the present invention can be most effectively and easily understood. It is intended to provide what seems to be possible. In this respect, it is not intended to show the structural details of the invention beyond that which is necessary for a fundamental understanding of the invention, and that some forms of the invention will be It will be clear to those skilled in the art how it is actually embodied.

<Underwater impurity separator>
The underwater impurity separator according to the present embodiment includes a cylindrical separator main body (2), a plurality of separation materials (3) housed in the separator main body, and water flowing into the separator main body. An inflow nozzle (4) provided on the outer peripheral side of the separator main body, and an outflow nozzle (5) provided on the outer peripheral side of the separator main body so that water flows out from the inside of the separator main body. A discharge port (7) for discharging impurities (C) separated and settled by the separating material is formed in a bottom portion (6) on one end side in the axial direction (see, for example, FIGS. 1 and 2). ). The inflow nozzle (4) is arranged such that its axis (4a) is located at one axial end of the separator body with respect to a reference line (L) perpendicular to the axis (2a) of the separator body (2). They are arranged so as to be parallel when viewed. Furthermore, the outflow nozzle (5) is arranged such that its axis (5a) is located closer to the bottom (6) in the axial direction of the separator body (2) than the axis (4a) of the inflow nozzle (4). Have been.

  The above “orthogonal” means that the axis (2a) of the separator body (2) and the reference line (L) are completely orthogonal to each other, and that both (2a, L) are 90 degrees ± 5 degrees. It also includes a state in which they intersect with each other in a range of an angle. The term "parallel" means that the axis (4a) of the inflow nozzle (4) is completely parallel to the reference line (L), and that the two (4a, L) have an angle of about ± 5 degrees. It also includes the state of intersection within the range.

  As the underwater impurity separator according to the present embodiment, for example, an axial parallel space (S1) of the separator main body (2) of each axis (4a, 5a) of the inflow nozzle (4) and the outflow nozzle (5). ) May be 0.8 to 1.2 times (preferably 0.9 to 1.1 times) the outer diameter (d) of the inflow nozzle (see, for example, FIG. 1). it can. The term "parallel" means that the axes (4a, 5a) of the inflow nozzle (4) and the outflow nozzle (5) are completely parallel, and both (4a, 5a) are about ± 5 degrees. It also includes the state of intersecting in the angle range of.

  In the underwater impurity separator according to the present embodiment, for example, the outflow nozzle (5) is arranged so that the axis (5a) thereof is along the reference line (L). The parallel interval (S2) of the axial center of the separator body viewed from one end side in the axial direction is 0.8 to 1.2 times (preferably 0.9 to 1.1 times) the outer diameter (d) of the inflow nozzle. ) (See, for example, FIG. 2). In addition, the term “along the reference line” means that the axis (5a) of the outflow nozzle (5) and the reference line (L) are completely coincident with each other, and that both (5a, L) are ± 5 degrees. It also includes a state in which they intersect with each other in a range of an angle.

  As the underwater impurity separator according to the present embodiment, for example, an air vent valve (17) for bleeding the air in the separator main body is provided at an upper portion of one end in the axial direction of the separator main body (2). (See, for example, FIG. 3).

In the underwater impurity separator according to the present embodiment, for example, the separation material (3) includes a first separation material (3a) including a cylindrical first separation material main body (21) and a first separation material main body. And a second separating member (3b) including a small-diameter cylindrical second separating member body (22) (for example, see FIGS. 4 to 6 and the like).

In the case of the configuration described above, for example, the separator body (2) relative to the total mass of the plurality of first isolation member which is accommodated (3a) and the second isolation member (3b) in the first separation material more Is 60 to 80% (preferably 65 to 75%), and the ratio of the mass of the plurality of second separating materials is 20 to 40% (preferably 25 to 35%). it can.

In the underwater impurity separator according to the present embodiment, for example, the separating material (3) includes a cylindrical separating material main body (21, 22), and the separating material main body has a water inlet (23) in a circumferential direction. Are formed, and a water flow regulating plate (24) extending inside the separation material body is provided on the edge side of each water flow inlet (see, for example, FIGS. 4 to 6 and the like). Thereby, the water flowing in the separator main body is subjected to the separation action by the collision and the centrifugal force by the plurality of separation materials, whereby the impurities contained in the water are effectively separated.

<Cooling water circulation system>
The cooling water circulation system according to the present embodiment is a cooling water circulation system (31) that circulates cooling water in a circulation path (33), and removes impurities contained in cooling water that circulates in the circulation path. (For example, see FIG. 8 and the like).

  As the cooling water circulation system according to the present embodiment, for example, a water treatment agent applicator (40) for applying a water treatment agent composed of an inorganic substance to the cooling water, a tourmaline processor (41) for treating the cooling water with tourmaline, a cooling water And / or a combination of two or more of a magnetic fluid treatment device (42) for magnetically treating water and a microvalve generator (43) for generating microbubbles in cooling water (for example, FIG. 8 etc.). Thereby, the quality of the cooling water can be more effectively improved.

  In the cooling water circulation system according to the present embodiment, for example, the circulation path (33) includes a first circulation path (33a) that connects the cooling tower (34) and the chiller (35), and a chiller (35). At least one of the second circulation paths (33b) communicating with the target portion (36) can be provided (for example, see FIG. 8). Thereby, dirt and clogging of the first circulation path and / or the second circulation path can be prevented. In addition, as the said cooling target part, an injection molding apparatus, a press working apparatus, a welding apparatus, a heating apparatus, a trim apparatus, etc. can be mentioned, for example.

  Note that the cooling water with improved water quality (that is, activated water) means water that has been subjected to physical and chemical treatments and has a cleaning function. The role of this activated water is, for example, (1) decompose water clusters (H20 aggregates) to become permeable and smooth water, (2) OH radicals are generated, and rust-cob scale deposits -Decomposition and washing of organic substances and the like, (3) Oxidation-reduction potential is negatively charged and becomes negative ion water (weak alkali). Items that generate activated water include, for example, (1) high-concentration microvalve (effect; cooling efficiency 1.8 times higher than water cooling), (2) tourmaline tourmaline (effect; subdivide water molecules) And promotes pipe cleaning), and (3) magnetized reduced water (excellent in rust prevention and scale prevention).

  It should be noted that reference numerals in parentheses of each configuration described in the above-described embodiment indicate a correspondence relationship with a specific configuration described in Examples described later.

  Hereinafter, the present invention will be described specifically with reference to the drawings.

(1) Configuration of Underwater Impurity Separator As shown in FIGS. 1 and 2, an underwater impurity separator 1 according to the present embodiment has a cylindrical separator main body 2 and a plurality of separators housed in the separator main body 2. the separating member 3, the separator and the inlet nozzle 4 provided on the outer peripheral side of the separator main body 2 so as to flow into the water in the body 2, the separator from the main body 2 of the separator main body 2 so as to flow out water And an outflow nozzle 5 provided on the outer peripheral side. The separator body 2, the separating material 3, the inflow nozzle 4 and the outflow nozzle 5 are made of stainless steel.

The separator main body 2 is installed such that its axial direction is along the vertical direction. A discharge port 7 for discharging impurities C separated and precipitated (coagulated and settled) by the separation material 3 is formed in a bottom portion 6 at one axial end of the separator body 2. Drain pipes 49 and 49 ′ constituting a cooling water circulation system 31 described later can be connected to the outlet 7 (see FIG. 8). Further, a baffle plate 10 is provided in the separator main body 2 so as to vertically partition the internal space into an upper separation chamber 8 and a lower sedimentation chamber 9. The baffle plate 10 is formed with a plurality of through holes for restricting the separation material 3 from protruding toward the lower settling chamber 8. A baffle plate 11 having a plurality of through holes for restricting the separation material 3 from projecting toward the nozzles 4 and 5 is provided at each connection portion between the inflow nozzle 4 and the outflow nozzle 5 of the separator body 2. ing. Further, on the outer peripheral side of the lower part of the separator main body 2, support legs 12 mounted on the floor surface are provided.

  The inflow nozzle 4 and the outflow nozzle 5 are formed in a cylindrical shape having substantially the same outer diameter d. The inflow nozzle 4 is disposed such that its axis 4a is parallel to a reference line L orthogonal to the axis 2a of the separator main body 2 when viewed from one axial end of the separator main body 2. . Specifically, when a plane (for example, a horizontal plane) orthogonal to the axis 2a of the separator main body 2 and including the reference line L is defined as the first reference plane SF1, the inflow nozzle projected on the first reference plane SF1 The axis 4a is parallel to the reference line L. The outlet nozzle 5 is arranged such that its axis 5 a is located closer to the bottom 6 in the axial direction of the separator body 2 than the axis 4 a of the inflow nozzle 4. Note that flanges 14 are provided on the outer ends of the inflow nozzle 4 and the outflow nozzle 5 to connect pipes 38a and 45a constituting a circulation path 33 of a cooling water circulation system 31 described later (see FIG. 8). ).

The inflow nozzle 4 and the outflow nozzle 5 are arranged such that their respective axes 4a, 5a are parallel in the axial direction of the separator body 2. Specifically, when a plane (for example, a vertical plane) including the axis 2a of the separator main body 2 and the reference line L is defined as the second reference plane SF2, the inflow nozzle 4 projected on the second reference plane SF2 and The axes 4a, 5a of the outflow nozzle 5 are parallel. The axial distance S1 between the axial centers 4a and 5a of the inflow nozzle 4 and the outflow nozzle 5 in the axial direction of the separator body 2 is set to be substantially the same as the outer diameter d of the inflow nozzle 4 (see FIG. 1). ). The outflow nozzle 5 is arranged so that its axis 5a is along the reference line L. The parallel interval S2 between the axial centers 4a and 5a of the inflow nozzle 4 and the outflow nozzle 5 as viewed from one axial end of the separator body 2 is set to be substantially the same as the outer diameter d of the inflow nozzle 4. (See FIG. 2). As a result, the water flowing in from the inflow nozzle 4 flows downward in the separator main body 2 (specifically, in the upper separation chamber 8) in a spiral shape for approximately one half turn, and flows out from the outflow nozzle 5. (See FIG. 7).

  An air bleed valve 17 for bleeding air from inside the separator main body 2 is provided at an upper portion of one end side in the axial direction of the separator main body 2. As shown in FIG. 3, the air vent valve 17 includes a casing 18 attached to an upper part of the separator main body 2. In the casing 18, a valve chamber 18a communicating with the inside of the separator main body 2 is formed. The valve chamber 18a accommodates a ball-shaped float 19 that moves up and down due to the vertical fluctuation of the level of the inflowing water. A valve seat 20 having an air vent hole 20a communicating with the valve chamber 18a is provided at an upper portion of the casing 18. The air release valve 17 is raised by the water (indicated by a solid arrow in FIG. 3A) flowing into the valve chamber 18a from the inside of the separator main body 2 and seated on the valve seat 20 by the float 19 rising. Then, the air vent hole 20a is closed to regulate the outflow of water. On the other hand, the inflow of water into the valve chamber 18a decreases, and the float 19 descends and separates from the valve seat 20, thereby opening the air vent hole 20a and generating inside the separator main body 2 and flowing into the valve chamber 28a. The released air is released into the atmosphere (indicated by a broken arrow in FIG. 3B).

The separation member 3, as shown in FIGS. 4 to 6, a first separating member 3a comprises a first separation member body 21 cylindrical, second separation member of the small-diameter cylindrical from the first separation member body 21 A second separating member 3b having a main body 22. The first separating material main body 21 is open at both ends in the axial direction, has an outer diameter d1 of about 16 mm, and has an axial length L1 of about 16 mm. The second separating material main body 22 is opened at both ends in the axial direction, has an outer diameter d2 of about 10 mm, and has an axial length L2 of about 10 mm. In addition, each first and second separate material body 21, with staggered to water inlet 23 is formed with a plurality in the circumferential direction, on the inner side of the separation material body 21 to the edge of the water inlet 23 A water flow regulating plate 24 extending in a curved shape is provided. According to the first and second separating members 3a and 3b, when the water flowing into the first and second separating member bodies 21 and 22 from the respective water inlets 23 collides with the respective water flow regulating plates 24 and flows. Then, the impurity C having a large specific gravity difference is separated on the water flow regulating plate 24 by the centrifugal force (see FIG. 6). Then, the separated impurities C are washed away by the water flowing from the side openings of the first and second separation material main bodies 21 and 22.

Here, in the separator main body 2 (specifically, in the upper separation chamber 8), a plurality of first and second separation materials 3a and 3b, which are substantially uniformly mixed, are accommodated in irregular directions. (See FIG. 1). The mass ratio of the plurality of first separation members 3a to the total mass of the plurality of first separation members 3a and the second separation members 3b is about 70%, and the mass ratio of the plurality of second separation members 3b. Is about 30%.

(2) Configuration of Cooling Water Circulation System As shown in FIG. 8, the cooling water circulation system 31 according to the present embodiment circulates the cooling water in the circulation path 33, and the cooling water circulates in the circulation path 33. Is provided with the underwater impurity separator 1 configured as above to remove impurities contained in the water. The circulation path 33 communicates the first circulation path 33a that connects the cooling tower 34 with the heat exchanger 35a of the chiller 35, and connects the chiller 35 and the cooling target portion 36 (for example, a mold of an injection molding device). A second circulation path 33b.

  The bypass path 38 connected to the feed path of the first circulation path 33a includes a water treatment agent applicator 40 for applying a water treatment agent made of an inorganic substance to the cooling water, the above-described in-water impurity separator 1, and the cooling water. A tourmaline treatment device 41 for treating with tourmaline and a magnetic water treatment device 42 for treating cooling water with magnetism are provided. The cooling tower 34 is provided with a high-concentration microvalve generator 43 for generating microbubbles in the cooling water. Further, the magnetic water treatment device 42 is provided in the bypass path 39 connected to the feed path of the second circulation path 33b. Further, the water treatment agent applicator 40 and the underwater impurity separator 1 are provided in a bypass path 45 connected to the return path of the second circulation path 33b.

  In the water treatment agent applicator 40, the scale components (Ca, Mg, Si) in the cooling water are aggregated and precipitated to separate. On the other hand, in a general organic phosphorus-based chemical treatment, a rust-proof and scale-proof film is formed in a pipe, but rust and scale containing hard silica in a mold cooling hole cannot be removed. . In addition, drain pipes 49 and 49 ′ which are opened and closed by on-off valves 48 and 48 ′ are connected to the outlet 7 of the underwater impurity separator 1. Then, the control unit 47 opens the on-off valve 48 to discharge impurities according to the detection value from the sensor 46 for detecting the electric conductivity of the cooling water. When released, impurities are discharged.

(3) Operation of cooling water circulation system Next, the operation of the cooling water circulation system 31 having the above configuration will be described. The quality of the cooling water circulating in the first circulation path 33a is improved by the action of the underwater impurity separator 1, the water treatment agent applicator 40, the tourmaline treatment device 41, the magnetic water treatment device 42, and the high-concentration microvalve generator 43. Thus, the cooling water is excellent in rust prevention and scale resistance and has a cleaning function. In addition, the cooling water circulating in the second circulation path 33b is improved in water quality by the action of the underwater impurity separator 1, the water treatment agent applicator 40, and the magnetic water treatment device 42, and is excellent in rust prevention and scale prevention and is washed. The cooling water has a function.

  Then, the cooling water whose water quality has been improved circulates in the first and second circulation paths 33a and 33b. As a result, scale adhesion, accumulation, flow path blockage, corrosion, rust, water leakage, slime, algae generation, etc. in the mold cooling holes, cooling pipes, heat exchangers, etc. due to the deterioration of cooling water quality Is suppressed. As a result, the quality of molded products can be stabilized (the mold can be maintained at a constant temperature; silver failure due to insufficient cooling is unlikely to occur), power saving, and energy saving (power consumption is greatly increased by improving the heat exchange rate of the heat exchanger). Saving; CO2 emission reduction by power saving and water saving; reduction of high pressure abnormal trouble of heat exchanger), drastic reduction of facility management cost (reduction of electricity cost for facility; reduction of chemical cleaning cost; reduction of cleaning maintenance cost) Various advantages such as are obtained.

In addition, in the above-described underwater impurity separator 1, as shown by a broken line arrow in FIG. 7, the water flowing from the inflow nozzle 4 flows downward in the separator main body 2 (specifically, in the upper separation chamber 8). The fluid flows in a spiral shape for approximately one rotation and a half and flows out of the outflow nozzle 5. This downward spiral water flow exerts a downward pressing force on the impurities C separated by the separating material 3, and the impurities C pass through the baffle plate 10 and settle in the lower settling chamber 9 (FIG. 1). The settled impurities C are discharged from the discharge port 7 at an appropriate time under the control of the control units 47 and 47 '. On the other hand, when air is generated in the separator main body 2, the air is released to the atmosphere by the air release valve 17.

  Here, an experimental example relating to the cooling water circulation system will be described. In this experimental example, as shown in FIG. 9, the underwater impurity separator 1 is connected to the return path of the second circulation path 33 b that connects the chiller 35 and the cooling target section 36 (for example, a mold of an injection molding device). And a water treatment agent applicator 40, and a bypass path 57 having a flow meter 55 and a scale fixing pipe 56 (a pipe with rust and scale fixed to the inner periphery) was connected. Then, the cooling water was circulated by the pump 58, and the condition and the flow rate of the scale fixing pipe 56 and the mold cooling hole after 17 days were confirmed. As a result, it was confirmed that the scale fixed pipe 56 was rusted, the scale was peeled off, and the pipe inner diameter was enlarged. Further, the flow rate of the cooling water at the initial stage was about 21.0 L / min, but it became about 27.2 L / min after 17 days, and an increase of about 29.5% in 17 days was confirmed. Further, it was confirmed that hard black rust was removed from the mold cooling holes. Further, the cooling water flow rate at the initial stage was about 30.5 L / min, but it became about 37.9 L / min after 17 days, and an increase of about 24.2% in 17 days was confirmed.

(4) Effects of the embodiment According to the underwater impurity separator 1 of the present embodiment, the inflow nozzle 4 has the axis 4a of the separator main body 2 with respect to the reference line L orthogonal to the axis 2a of the separator main body 2. The outlet nozzle 5 is positioned such that its axis 5a is closer to the bottom 6 in the axial direction of the separator body 2 than the axis 4a of the inflow nozzle 4 is. It is arranged to be. Thereby, the water flowing in from the inflow nozzle 4 flows downward in the separator main body 2 in a spiral shape and flows out from the outflow nozzle 5. The spiral flow towards the lower, together with the separation area is increased, and acts pushing force downward to impurities C separated by the plurality of separation material 3, the bottom of the impurity C in the separator main body 2 6 can be reliably precipitated. As a result, an increase in pressure loss in the separator main body 2 is suppressed, and even when a water supply pump is provided, the pump is not overloaded.

In particular, according to the underwater impurity separator 1 of this embodiment, the impurities are immediately discharged when the drain piping 49, 49 'is opened. In contrast, in the conventional underwater impurity separator 101 (see FIGS. 10 and 11), when the drain pipe is opened, the transparent water is discharged first, and then the impurities entangled in the separation material are gradually discharged. Is done.

  Further, in the present embodiment, the axial distance S1 between the axial centers 4a and 5a of the inflow nozzle 4 and the outflow nozzle 5 in the axial direction of the separator body 2 is substantially the same as the outer diameter d of the inflow nozzle 4. Thereby, the number of rotations of the spiral water flow in the separator main body 2 can be set to approximately one and a half rotations. Therefore, it is possible to achieve a good balance between the suppression of the increase in pressure loss and the effective separation and precipitation of the impurity C.

  Further, in this embodiment, the outflow nozzle 5 is arranged so that its axis 5a is along the reference line L, and the axis 4a of the inflow nozzle 4 and the axis 4a of the outflow nozzle 5, and the axis of the The parallel interval S2 viewed from one end of the direction is substantially the same as the outer diameter d of the inflow nozzle 4. Thereby, the number of rotations of the spiral water flow in the separator main body 2 can be set to approximately one and a half rotations. Therefore, it is possible to achieve a good balance between the suppression of the increase in pressure loss and the effective separation and precipitation of the impurity C.

  Further, in this embodiment, an air vent valve 17 for bleeding the air in the separator main body 2 is provided at an upper portion on one end side in the axial direction of the separator main body 2. As a result, there is no air pool in the separator main body 2 and water flows smoothly in the separator main body 2.

Further, in this embodiment, the separation member 3 has a first separating member 3a comprises a first separation member body 21 cylindrical, the second isolation member body 22 small diameter cylindrical from the first separation member body 21 A second separating member 3b. As described above, by mixing a plurality of the first separating members 3a and the second separating members 3b having different outer diameters and storing them in the separator main body 2, the separation accuracy can be further improved. In particular, the separation accuracy capable of removing impurities up to about 7 μm can be improved to the separation accuracy capable of removing impurities up to about 3 μm. Therefore, it can be applied to a chiller circulating water system under severe conditions (that is, a secondary cooling circulation (cold water or hot water region)) system.

In this embodiment, the ratio of the mass of the plurality of first separation members 3a to the total mass of the plurality of first separation members 3a and the second separation members 3b accommodated in the separator main body 2 is about 70%. %, And the ratio of the mass of the plurality of second separation members 3b is 30%. As described above, by mixing the plurality of first separation members 3a and the second separation members 3b having different outer diameters at a specific mixing ratio and storing the mixture in the separator main body 2, suppression of increase in pressure loss and separation accuracy are achieved. And a good balance can be achieved.

Further, in this embodiment, the separation member 3 has a cylindrical separation member body 21, the separating material body 21 and 22, together with the water inlet 23 is formed with a plurality in the circumferential direction, each water inlet A water flow regulating plate 24 extending inside the separation material bodies 21 and 22 is provided on the edge side of 23. Thereby, the water flowing in the separator main body 2 is subjected to the separation action by the collision and the centrifugal force by the plurality of separation members 3, whereby the impurities contained in the water are effectively separated.

  Further, according to the cooling water circulation system 31 of the present embodiment, the above-described underwater impurity separator 1 that removes impurities contained in the cooling water circulating in the circulation path 33 is provided. Thereby, when circulating the cooling water of which the water quality is improved, the impurities contained in the cooling water are effectively removed by the underwater impurity separator 1, and the water quality of the cooling water can be maintained.

  In this embodiment, a water treatment agent applicator 40 for applying a water treatment agent made of an inorganic substance to the cooling water, a tourmaline treatment unit 41 for treating the cooling water with tourmaline, and a magnetic fluid treatment device for treating the cooling water with magnetism 42 and a micro valve generator 43 for generating micro bubbles in the cooling water. Thereby, the quality of the cooling water can be more effectively improved.

  Further, in the present embodiment, the circulation path 33 includes a first circulation path 33a that connects the cooling tower 34 and the chiller 35, and a second circulation path 33b that connects the chiller 35 and the cooling target 36. Thereby, dirt and clogging of the first circulation path 33a and the second circulation path 33b can be prevented.

  It should be noted that the present invention is not limited to the above-described embodiment, but may be variously modified within the scope of the present invention according to the purpose and application. That is, in the above-described embodiment, the separator main body 2 is arranged so that the axis 2a is oriented in the vertical direction. However, the present invention is not limited to this. For example, as long as impurities can be separated and precipitated, the axis is The separator body may be arranged to be inclined with respect to the vertical direction.

  In the above embodiment, the outflow nozzle 5 is arranged so that the axis 5a is along the reference line L. However, the present invention is not limited to this. May be arranged in parallel.

  Further, in the above embodiment, the vertical parallel spacing S1 and the horizontal parallel spacing S2 of the respective axial centers 4a and 5a of the inflow nozzle 4 and the outflow nozzle 5 are set to substantially the same value as the outer diameter d of the inflow nozzle 4. However, the present invention is not limited to this. For example, the parallel interval S1 and / or the parallel interval S2 may be set to a value larger or smaller than the outer diameter d of the inflow nozzle 4.

  Further, in the above-described embodiment, the float type air release valve 17 has been described as an example. However, the present invention is not limited to this, and another type of air release valve such as a pressure operated type may be employed.

Further, in the above embodiment, the cylindrical separating member 3 is exemplified . As a reference example , for example, a form in which a filter medium such as a granular form, a powder form, a mesh form, a fibrous form, and a block form is employed is exemplified . Further, in the above-described embodiment, the two kinds of separating materials 3a and 3b are accommodated in the separator main body 2. However, the present invention is not limited to this, and three or more kinds of separating materials are accommodated in the separator main body 2. You may do so.

  Further, in the above-described embodiment, the underwater impurity separator 1 disposed in the feed path of the circulation path 33 has been exemplified. However, the present invention is not limited to this. For example, as shown by a virtual line in FIG. May be an underwater impurity separator 1 disposed in the return path. In this case, it is not always necessary to provide a water supply pump in the return path of the circulation path 33.

  Further, in the above-described embodiment, the underwater impurity separator 1 for separating impurities in the cooling water is illustrated, but the present invention is not limited thereto. For example, an underwater impurity separator for separating impurities in water other than the cooling water may be used.

  The foregoing examples are for illustrative purposes only and are not to be construed as limiting the invention. Although the invention has been described with reference to exemplary embodiments, it is understood that the language used in the description and illustration of the invention is illustrative and not restrictive. As detailed herein, changes may be made within the scope of the appended claims without departing from the scope or spirit of the invention in its form. Although reference has been made herein to particular structures, materials and examples in the description of the invention, it is not intended that the invention be limited to the disclosure herein, but rather that the invention be limited by the appended claims. It covers all functionally equivalent structures, methods, and uses within the scope.

  The present invention is not limited to the embodiment described in detail above, and various modifications or changes can be made within the scope shown in the claims of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is widely used as a technology for separating impurities contained in water used in the industrial, medical, agricultural, environmental, food, and other fields. In particular, it is suitably used as a technique for separating impurities contained in cooling water used in factory equipment and the like.

1; Underwater impurity separator, 2; Separator body, 2a; Shaft, 3; Separation material, 3a; First separation material, 3b; Second separation material, 4; Inflow nozzle, 4a; Nozzle, 5a; shaft center, 6; bottom, 7; outlet, 17; air vent valve, 21; first separating material body, 22; second separating material body, 31; cooling water circulation system, 33; circulation path, C; Impurities, d: outer diameter of inflow nozzle, L: reference line, S1, S2: parallel spacing.

Claims (7)

A cylindrical separator main body, a plurality of separation materials accommodated in the separator main body, an inflow nozzle provided on an outer peripheral side of the separator main body so that water flows into the separator main body, An outlet nozzle provided on the outer peripheral side of the separator main body so as to allow water to flow out from the inside of the separator main body, and a bottom at one axial end of the separator main body, separated by the separating material. An underwater impurity separator in which an outlet for discharging precipitated impurities is formed,
The inflow nozzle is disposed such that its axis is parallel to a reference line orthogonal to the axis of the separator main body when viewed from one axial end of the separator main body,
The outflow nozzle is disposed such that its axis is located closer to the bottom in the axial direction of the separator body than the axis of the inflow nozzle,
The separation material includes: a first separation material having a cylindrical first separation material main body; and a second separation material having a cylindrical second separation material main body having a smaller diameter than the first separation material main body.
Each of the first separation material main body and the second separation material main body has a plurality of water inflow ports formed in a circumferential direction, and a water flow regulating plate extending inward of the separation material main body is provided at an edge of each of the water inflow ports. An underwater impurity separator, which is provided.   The underwater according to claim 1, wherein an axial parallel distance between the axis of each of the inflow nozzle and the outflow nozzle in the axial direction of the separator body is 0.8 to 1.2 times an outer diameter of the inflow nozzle. Impurity separator. The outflow nozzle is arranged so that its axis is along the reference line,
The parallel interval between the axial centers of the inflow nozzle and the outflow nozzle as viewed from one axial end of the separator body is 0.8 to 1.2 times the outer diameter of the inflow nozzle. Item 3. The underwater impurity separator according to Item 1 or 2.   The underwater impurity separator according to any one of claims 1 to 3, wherein an air vent valve for bleeding air from the separator main body is provided at an upper portion of one end in the axial direction of the separator main body. .   The ratio of the mass of the plurality of first separation members to the total mass of the plurality of first separation members and the second separation members accommodated in the separator body is 60 to 80%, and 5. The underwater impurity separator according to claim 1, wherein a mass ratio of the second separation material is 20% to 40%. A cooling water circulation system that includes a circulation path that communicates a cooling tower and a chiller, and circulates cooling water between the cooling tower and the chiller through the circulation path ,
The underwater impurity separator according to any one of claims 1 to 5 , wherein an impurity contained in cooling water circulating in the circulation path is removed from a pipe constituting the circulation path . A cooling water circulation system, characterized in that: A cooling water circulation system that includes a circulation path that communicates a chiller and a cooling target unit, and circulates cooling water between the chiller and the cooling target unit through the circulation path,
The underwater impurity separator according to any one of claims 1 to 5, wherein an impurity contained in cooling water circulating in the circulation path is removed from a pipe constituting the circulation path. A cooling water circulation system, characterized in that:

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