JP2002001014A - Circular filtration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circular filtration apparatus capable of efficiently removing an object to be filtered from a fluid by circulating the fluid in the inside and passing the fluid through a purification treatment tank a plurality of times. SOLUTION: This circular filtration apparatus 1a comprises an approximately cylindrical fluid rotation chamber 2 in which an object to be filtered is converged in the center of the whirling current generated in the inside, a filtration chamber 3 installed adjacently to the fluid rotation chamber 2, a first connection pipe 4 for connecting the respective upper parts of the fluid rotation chamber 2 and the filtration chamber 3, a second connection pipe 5 for connecting the respective lower parts of the chambers 2, 3 a flow-in pipe 6 for jetting a fluid from a forcibly sending means such as a pump installed in the outside of the apparatus through a nozzle 61 installed in the second connection pipe, 5 and a flow-out pipe 7 for discharging the fluid out of an opening 54 formed in the upper side of the fluid rotation chamber 2 after purification treatment, and the circular filtration apparatus la is further provided with a taper part 53 formed in the second connection pipe 5, so that a fluid is circulated in the inside of the apparatus owing to the negative pressure generated in the taper part 53 and, consequently, the object to be filtered which is once passed through the filtration chamber 3 is again sent to the filtration chamber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to polluted gas such as exhaust gas of an internal combustion engine, oil of various machines, and industrial waste water.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating filtration device for purifying a liquid or the like by a vortex generated by rotational movement of the fluid or by filtration.

[0002]

2. Description of the Related Art Conventionally, exhaust gas of an internal combustion engine, carbon and sludge contained in oil, red rust contained in industrial waste water, etc. have been adsorbed by a filtration method using a filter paper, a metal net or the like, or by using a mineral as a catalyst. It is removed by a purification device that performs filtration and adsorption by a method or the like. Most of such purifying devices are of a type in which an introduced fluid is once passed through a purifying treatment tank for performing a treatment such as filtration or adsorption and then immediately discharged to the outside of the device.

[0003]

As described above, since the conventional purifying apparatus performs the purifying process only once, the object to be filtered that has passed through the purifying tank once without being removed is returned to the outside without being removed. It has been discharged. Therefore, in order to remove the filtration target more reliably by the conventional system, it is necessary to multiply the purification processing filters used in the apparatus or to provide a plurality of purification processing tanks in the apparatus. there were. In view of the above problems, the present invention provides a circulating filtration device capable of efficiently removing an object to be filtered in a fluid by circulating the fluid in the device and passing through the purification tank a plurality of times. The purpose is to do.

[0004]

In order to achieve the above object, the present invention provides a circulating filtration apparatus for circulating a fluid and filtering an object to be filtered contained in the fluid. A substantially cylindrical fluid rotating chamber for generating a vortex by rotating about a central axis extending in a substantially vertical direction, and for concentrating an object to be filtered contained in the fluid at the center of the vortex; A first connection pipe for sucking the object to be filtered concentrated near the central axis of the fluid rotation chamber, and a first connection pipe connected to the fluid rotation chamber via the first connection pipe; A filtration chamber for filtering the discharged fluid, a second connection pipe for sending the fluid discharged from the filtration chamber to the fluid rotation chamber, and a pressurized fluid source, The fluid from the fluid source is supplied from the nozzle provided at the tip to the second connection pipe. And a discharge pipe for discharging the fluid from the peripheral wall of the fluid rotation chamber to the outside of the circulating filtration device. The chamber side has a tapered portion having an enlarged diameter, and a nozzle of the inflow pipe is arranged in the tapered portion, and fluid is ejected from the filtration chamber side to the fluid rotation chamber side via the nozzle. The fluid is sucked from the filtration chamber to the second connection pipe by a negative pressure generated in the tapered portion. According to the above configuration, the fluid once taken into the apparatus circulates through the apparatus a plurality of times and passes through the filtration chamber forming the purification treatment tank a plurality of times, so that the filtration target is more reliably removed. Is realized. Further, by extending the first connection pipe downward from the upper surface of the fluid rotation chamber, it is possible to more efficiently remove the filtration target concentrated at substantially the center above the fluid rotation chamber. It becomes possible. Further, the second connection pipe sends out the fluid along the peripheral surface of the fluid rotation chamber from an opening provided on the peripheral surface of the fluid rotation chamber, whereby the fluid in the second connection pipe is discharged. The kinetic energy alone imparts a rotational force to the fluid in the fluid rotation chamber, thereby generating a vortex. Further, by providing a fluid sending means such as a pump for sending fluid from the fluid rotating chamber to the filtration chamber in the first connection pipe,
It is possible to forcibly circulate the fluid in the device.
In that case, a valve capable of blocking fluid flowing in the pipe is provided in each of the inflow pipe and the outflow pipe, and when the inflow pipe and the outflow pipe valve are closed, the fluid rotation chamber, the filtration The number of times the fluid in the circulating filtration device passes through the fluid rotation chamber and the filtration chamber is set on the user side by forming a closed loop by the chamber and the first and second connection pipes. It is possible to
More reliable purification processing can be performed. Other objects, operations and effects of the present invention will become more apparent from the following description of embodiments with reference to the drawings.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a circulating filtration device of the present invention will be described in detail. FIG. 1 is a perspective view showing the overall configuration of a first embodiment of the circulating filtration device of the present invention, and FIGS. 2 and 3 are explanatory views of the circulating filtration device of the first embodiment of the present invention as viewed from above and from the side. It is. As shown in FIG. 1, the circulation filtration device 1 a of the present invention includes a substantially cylindrical fluid rotation chamber 2, a filtration chamber 3 disposed adjacent to the fluid rotation chamber 2, the fluid rotation chamber 2 and a filtration chamber. A first connection pipe 4 connecting each upper part of the chamber 3 and a second connection pipe connecting each lower part of the chamber 3
And a nozzle 6 provided in the second connection pipe with fluid from a pumping means such as a pump provided outside the apparatus.
1 and an outlet pipe 7 for discharging the fluid after the purification treatment from an upper opening 22 provided above the fluid rotation chamber 2. Fluid rotation chamber 2
Is formed in a substantially cylindrical shape, as shown in FIGS. 1 to 3, and a cavity having substantially the same shape as the outer shape is provided therein. In addition, approximately at the center of the upper surface of the fluid rotation chamber 2,
An upper opening 21 connected to the first connection pipe 4 has an upper opening 22 connected to the outflow pipe 7 at an upper portion of a side surface and configured to discharge a fluid after a purification process, and a lower opening formed at the lower portion of a side surface. The lower openings 23 connected to the two connection pipes 5 are provided respectively. The fluid rotation chamber 2 includes the lower opening 2.
The fluid is delivered in a tangential direction, that is, in a substantially circumferential direction from the fluid 3, and the kinetic energy of the delivered fluid applies a rotational force to the fluid in the fluid rotating chamber 2 so that a vortex is generated. Has become. Due to the vortex, the object to be filtered in the fluid is concentrated substantially at the center above the fluid rotating chamber 2, and the concentrated object to be filtered is connected to the first connection 21 connected to the upper surface opening 21. Suction is performed through the suction port 41 of the tube 4. As shown in FIGS. 1 to 3, the filtration chamber 3 is formed in a substantially cylindrical shape in the same manner as the fluid rotation chamber 2, and an internal cavity having substantially the same shape as the outer shape has a filter as a filter. A functioning filtering material (not shown) is provided. At the approximate center of the upper surface of the filtration chamber 3, an upper surface opening 31 connected to the first connection pipe 4 is provided.
However, substantially at the center of the lower surface, a lower surface opening 32 connected to the second connection pipe 5 is provided. A type of chlorite, described in Japanese Patent Application Nos. 10-266889 and 11-324675, filed by the present inventor, is used as a filtering material to be installed inside the filtering chamber 3. It is also possible to provide a stone (a trademark: read as "Soraseki"). In this case, it is possible to perform the adsorption / decomposition treatment peculiar to the stone in the filtration chamber 3.

[0006] Here, chlorite schist is the aforementioned Japanese Patent Application No.
As described in detail in -266889 and Japanese Patent Application No. 11-324675, the rock is mudstone, and is included in, for example, the Sanwa metamorphic rock. The Samba metamorphic rocks are wide-area metamorphic rocks. In the wide-area metamorphic rocks, metamorphism is performed under crustal pressure, and thin layers with different mineral compositions are formed in flakes. In addition, under the crustal pressure, countless developed cleavages are generated in the flaky thin layer of the regional metamorphic rocks, and recrystallization occurs along the cleavages. The growth direction of the crystal is parallel to the cleavage or in the direction of crust pressure. Due to the cleavage and recrystallization, innumerable through holes are formed in the chlorite, and
Even if it is fine powder of about μm to about 40 μm, it becomes a porous shape in which the through holes are maintained. The through-hole has a function of adsorbing over a large surface area and a function of colonies of microorganisms, in addition to a filtering function as a filter. Chlorite contains ferrous and trivalent iron in a ratio of about 3: 1.
Oxidation and reduction can be repeated through carbon. When ferrous iron is oxidized to generate trivalent iron, it is considered that negative ions are generated and oxygen is deprived of surrounding substances (for example, water containing oxygen) to reduce the surrounding substances. . Chlorite has two ferric irons.
When it is reduced to valent iron, it generates electrical energy and generates magnetism (lines of magnetic force) from the flow of current. The lines of magnetic force increase the cluster size of the water molecules, so that the degree of separation between oil and water can be increased. Therefore, chlorite has a water purification action and an antioxidant action of water, and has an effect not found in general granular rock. That is, chlorite can purify water for a long period of time due to its overall function as a colony of microorganisms, negative ions, magnetic effects, and the like. Also,
Regarding the particle size when using chlorite as a filtering material,
Finer ones increase the contact area between water and chlorite,
It has been found that the water purification and antioxidant effects are excellent, but if it is too fine, the flow resistance of the water will increase and the flow rate will decrease, conversely reducing the water purification and antioxidant effects. Therefore, for example, as the particle size,
It is effective that the thickness is 0.5 mm or more and 10 mm or less. Chlorite schist is soft, and some fine and powdery particles flow out into the cooling water circulation path.However, they also have water purification and antioxidant effects. Scale and the like attached to the surface can be removed.

[0007] As shown in FIGS. 1 and 3, the first connection pipe 4 protrudes from the upper surface opening 21 provided substantially at the center of the upper surface of the fluid rotating chamber 2 into the fluid rotating chamber 2. It has a suction port 41 and a discharge port 42 attached to an upper surface opening 31 provided substantially at the center of the upper surface of the filtration chamber 3, and connects the upper surfaces of the fluid rotation chamber 2 and the filtration chamber 3 to each other. Connected. The suction port 41 is provided so as to be located on a central axis with respect to the axial direction of the fluid rotation chamber 2, and is provided substantially at the center of the upper surface of the fluid rotation chamber 2 as shown in FIGS. 2 and 3. It projects substantially vertically downward from the upper surface opening 21 provided. As described above, the suction port 41 is protruded substantially vertically downward from the substantially center of the upper surface of the fluid rotation chamber 2, so that the filtration target concentrated at the substantially center above the vortex generated in the fluid rotation chamber 2. An object can be efficiently removed from the suction port 41 of the first connection pipe 4. The second connection pipe 5 is, as shown in FIG.
It has a suction port 51 connected to the lower opening 32 of the filtration chamber, and a discharge port 52 connected to the lower opening 23 of the fluid rotation chamber 2. The suction port 51 and the discharge port 52
Between the tapered portion 5 and the suction port 51 side having an enlarged diameter.
3 is provided, and an opening 54 for attaching the inflow pipe 6 is provided on a side surface of the second connection pipe. Then, through this opening 54, the second connection pipe 5
The inflow pipe 6 is inserted into the inside. The inflow pipe 6 has a nozzle 61 at its distal end for ejecting a fluid from a pressurized fluid source such as a pump provided outside the circulating filtration device 1a, as shown in FIGS. 2 and 3. The nozzle 61 is attached such that the tip of the nozzle 61 is located at a predetermined distance from the inner wall of the tapered portion 53. Then, the fluid ejected from the nozzle 61 is ejected from the larger diameter side to the smaller diameter side of the taper portion 53, so that a negative pressure is generated in the taper portion 53. As a result, the fluid in the tapered portion 53 introduced from the suction port 51 is attracted to the discharge port 52 side of the second connection pipe 5 from the interval, and together with the liquid ejected from the nozzle 61, the second connection is performed. The fluid is discharged from the outlet 52 of the pipe 5 to the fluid rotation chamber 2.

The fluid in the filtration chamber 3 is sucked into the second connection pipe 5 by the negative pressure generated in the tapered portion 53, and the negative pressure generated in the filtration chamber 3 by the suction. The object to be filtered in the fluid rotation chamber 2 is sucked from the suction port 41 of the first connection pipe 4 connected to the upper surface of the filtration chamber 3 by the pressure. Hereinafter, the first of the present invention.
The operation when the circulating filtration device 1a of the embodiment is used will be described in detail. First, the fluid pumped from a pressurized fluid source such as a pump passes through the inflow pipe 6 and the second connection pipe 5 and is sent out to the fluid rotation chamber 2. At this time, the fluid discharged from the discharge port 52 of the second connection pipe 5 into the fluid rotating chamber 2 rotates in a spiral manner along the tangential direction of the side face of the fluid rotating chamber 2, that is, the circumferential direction of the side face. It rises in the room 2. A vortex is generated in the fluid in the fluid rotation chamber 2 due to the movement of the fluid in the fluid rotation chamber 2, and the object to be filtered contained in the fluid is concentrated at substantially the center above the fluid rotation chamber 2 due to the vortex. It has become. Then, the object to be filtered, which is concentrated substantially at the center above the fluid rotation chamber 2, is sucked from the suction port 41 of the first connection pipe 4 and sent out to the filtration chamber 3. On the other hand, the fluid after the removal of the object to be filtered flows near the upper side surface of the fluid rotation chamber 2, and passes through the outflow pipe 7 from the upper opening 22 provided on the upper side surface of the fluid rotation chamber 2. And discharged out of the device. The fluid containing the substance to be filtered delivered to the filtration chamber 3 by the first connection pipe 4 is filtered, adsorbed, or decomposed by a filtering material (not shown) provided in the filtration chamber 3, It is discharged to the second connection pipe 5 from a lower surface opening 32 provided substantially at the center of the lower surface of the filtration chamber 3. The fluid that has passed through the lower surface opening 32 and the suction port 51 of the filtration chamber 3 and has flowed into the second connection pipe 5 is in the tapered portion 53 generated by the fluid ejected from the nozzle 61 located in the tapered portion 53. Due to the negative pressure, the second connection pipe 5 moves from the suction port 51 side to the discharge port 52 side, and is sent out to the fluid rotation chamber 2 again. The object to be filtered that has not been completely removed in the filtration chamber 3 is sucked again from the suction port 41 of the first connection pipe 4 in the fluid rotation chamber 2, while the fluid after the purification process is removed from the fluid rotation chamber. The gas passes through an upper opening 22 provided at the upper part of the nozzle 2 and is discharged to the outflow pipe 7.

Next, a second embodiment of the circulating filtration device of the present invention will be described in detail. As shown in FIG. 4, the circulation filtration device 1b according to the second embodiment of the present invention has the same fluid rotation chamber 2, filtration chamber 3, first connection pipe 4, and second connection pipe as those in the first embodiment. 5, an inflow pipe 6, and an outflow pipe 7. On the other hand, the circulating filtration device 1b of the second embodiment is different from the circulating filtration device 1a of the first embodiment in that a valve 8 capable of blocking fluid flowing in each of the inflow pipe 6 and the outflow pipe 7 is provided. , 8 and a pump 9 as a fluid pumping means for pumping the fluid from the fluid rotation chamber 2 to the filtration chamber 3 to the first connection pipe 4. Then, by driving the pump 9 with the valves 8, 8 closed, the fluid rotation second connection pipe 5, the filtration chamber 3, the first and second connection pipes 4, 5 A closed loop is formed, and the number of times the fluid in the circulating filtration device 1b passes through the fluid rotation chamber 2 and the filtration chamber 3 can be set on the user side, so that a more reliable purification process can be performed. It is possible to do. As shown in FIG. 4, the upper part of each of the fluid rotation chamber 2, the first connection pipe 4, and the filtration chamber 3 of the circulating filtration device 1b of the second embodiment is contained in the fluid in the device. Air vent valves 10, 10, 10 for removing air are provided. The air vent valves 10, 10, 10 can also be applied to the circulation filtration device 1a of the first embodiment described above.

Hereinafter, the operation when the circulating filtration device 1b according to the second embodiment of the present invention is used will be described in detail. First, when the valves 8, 8 provided in the inflow pipe 6 and the outflow pipe 7 of the circulating filtration device 1b of the second embodiment are open,
Fluid pumped from a pressurized fluid source such as a pump provided outside the apparatus is used as the circulating filtration apparatus 1a of the first embodiment.
Similarly to the above, after being sent to the fluid rotating chamber 2 through the inflow pipe 6 and the second connection pipe 5, the first connection pipe 4, the filtration chamber 3, and the second connection pipe 5 The circulation filtration device 1 in order
b, and is discharged from the outflow pipe 7. On the other hand, when the valves 8, 8 provided in the inflow pipe 6 and the outflow pipe 7 of the circulating filtration device 1b are closed, as described above, the fluid rotation chamber 2, the first connection pipe 4, the filtration Since a closed loop is formed in the circulation filtration device 1b by the chamber 3 and the second connection pipe 5, the pump 9 provided in the first connection pipe 4 is driven to circulate the fluid in the closed loop. Fluid is in filtration chamber 3
It is possible for the user to appropriately adjust the number of times of passing. If there is a possibility that the object to be filtered may not be completely separated in the fluid rotation chambers 2 of the circulating filtration devices 1a and 1b of the first and second embodiments described above, a filter or the like is connected to the outflow pipe 7. Provision of the filter makes it possible to perform the purification process more reliably. And it is preferable to use the above-mentioned stone for this filter.
Finally, it is needless to say that the present invention is not limited to the above-described embodiment, and various changes and improvements can be made within the scope described in the claims.

[0011]

As described above, according to the present invention,
By circulating the fluid in the device a plurality of times, a circulating filtration device capable of passing through the filtration chamber a plurality of times and removing the object to be filtered more efficiently is realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire configuration of a first embodiment of a circulating filtration device of the present invention.

FIG. 2 is an explanatory view of the first embodiment of the circulating filtration device of the present invention as viewed from above.

FIG. 3 is an explanatory view of the first embodiment of the circulating filtration device of the present invention as viewed from the side.

FIG. 4 is a perspective view showing the overall configuration of a second embodiment of the circulating filtration device of the present invention.

[Explanation of symbols]

1a circulation filtration device (first embodiment), 1b circulation filtration device (second embodiment), 2 fluid rotating chamber, 21
Top opening, 22 top opening, 23 bottom opening,
3 filtration chamber, 31 upper surface opening, 32 lower surface opening,
4 first connection pipe, 41 suction port, 42 discharge port, 5 second connection pipe, 51 suction port, 52
Outlet, 53 tapered part, 54 opening, 6
Inflow pipe, 61 nozzles, 7 outflow pipes, 8 valves,
9 pump, 10 air release valve

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) B01D 29/08 520A 530D 29/42 510 F term (reference) 4D019 AA01 AA03 BA07 BB14 BC05 BC08 CB04 4D058 JA60 JB01 JB33 QA01 QA03 QA08 QA09 QA13 SA08 TA02 UA25 4G066 AA66B BA09 BA22 DA02 DA08 DA09 EA11

Claims (7)

[Claims] 1. A circulating filtration device for circulating a fluid and filtering an object to be filtered contained in the fluid, wherein the vortex is formed by rotating an internal fluid about a center axis extending in a substantially vertical direction. And a substantially cylindrical fluid rotation chamber for concentrating the filtration target contained in the fluid at the center of the vortex, and the filtration target concentrated near the central axis of the fluid rotation chamber. A first connection pipe for suctioning, and a connection to the fluid rotation chamber via the first connection pipe;
A filtration chamber for filtering the fluid discharged from the first connection pipe; a second connection pipe for delivering the fluid discharged from the filtration chamber to the fluid rotation chamber; And an inflow pipe for injecting the fluid from the pressurized fluid source into the second connection pipe from a nozzle provided at the tip, and flowing the fluid from the peripheral wall of the fluid rotation chamber to the outside of the circulating filtration device. And an outlet pipe for discharging, wherein a diameter of a part of the second connection pipe is a tapered portion whose diameter is increased on the filtration chamber side, and a nozzle of the inflow pipe is provided in the tapered portion. The fluid is ejected from the filtration chamber side to the fluid rotation chamber side via the nozzle, and the second connection pipe is connected to the second connection pipe from the filtration chamber by a negative pressure generated in the tapered portion. Fluid is sucked into A circulation filtration device characterized by the above-mentioned. 2. The circulating filtration device according to claim 1, wherein the suction port at one end of the first connection pipe extends downward from the upper surface of the fluid rotation chamber to the inside. 3. The fluid supply device according to claim 2, wherein the second connection pipe sends out a fluid along an outer peripheral surface of the fluid rotating chamber from an opening provided in the peripheral surface of the fluid rotating chamber, and the fluid is spirally formed in the fluid rotating chamber. The circulating filtration device according to claim 1, wherein the circulating filtration device rotates upward. 4. The circulating filtration according to claim 1, wherein a fluid pumping means for pumping a fluid from the fluid rotating chamber to the filtration chamber is provided in the first connection pipe. apparatus. 5. The circulating filtration device according to claim 4, wherein the fluid pumping means is a pump. 6. The inflow pipe and the outflow pipe each provided with a valve capable of shielding a fluid flowing in the pipe, and when the valves of the inflow pipe and the outflow pipe are closed, the fluid is removed. A rotation chamber, the filtration chamber, the first and second
The circulation filter according to claim 4 or 5, wherein a closed loop is formed by the connection pipe (1). 7. The circulating filtration device according to claim 1, wherein a stone is accommodated as a filter medium in the filtration chamber.