JP4742338B2 - Mixing device and method for treating polluted water using the mixing device - Google Patents

Description

  The present invention relates to a mixing apparatus for mixing a mixed substance such as liquid or powder with a fluid and a method for treating contaminated water using the mixing apparatus.

  Conventionally, as a device for dissolving a hardly soluble mixed substance that is difficult to dissolve in a liquid such as water, for example, it is detachably attached to the lower end of a supply hopper of the dissolved substance and allows the dissolved substance to pass in the direction of the inner axis thereof. A main body having a central passage, a housing having a chamber for partially containing the main body, and a housing having a dropping passage for communicating with the inner chamber and extending in the axial direction to pass the substance to be dissolved. A solvent for dissolving the dissolved substance is guided through the side wall of the housing to the annular space formed between the main body of the inner chamber and dropped to join the dissolved substance falling through the central passage. In the melting apparatus for melting, an annular inner wall forming the central passage is formed in the lower portion of the main body, and an annular space is formed concentrically on the outer side of the annular inner wall, leaving an annular space for forming an air curtain. Forming a wall, the air curtain forming annular space is connected to the atmosphere via a plurality of conduits extending in the axial direction of the main body, dissolving device is known (see Patent Document 1).

  Patent Document 1 Japanese Utility Model Publication No. 50-34288

Wherein the dissolution apparatus is to dissolve the dissolvable material is intended satisfactory, disassembled because many number of parts, takes time to assemble, has a drawback that the apparatus becomes expensive.
Therefore, the present invention can mix the mixed substance uniformly with the fluid, the number of parts of the apparatus is small, disassembly and assembly are easy, and the mixed fluid can be negatively ionized (low oxidation-reduction potential). As a result of various studies on the apparatus, the present invention has been completed.

  That is, the present invention comprises a supply hopper, a main body having a central passage in the inner axial direction, and a housing having an inner chamber for accommodating the main body, and a fluid for mixing with a mixed substance passes through the side wall of the housing through the inner wall. In a mixing device that is provided so that an annular space is formed between a chamber and the main body, and mixes and mixes the mixed substance and fluid that fall through the central passage portion, the discharge pipe of the supply hopper includes the discharge pipe Inserted into the central passage of the main body, provided at the discharge port of the supply hopper with a vibration valve provided with a rod-like body vertically at least at the top, provided with a curved recess in the wall surface of the inner chamber of the housing, This is a mixing device characterized in that a vertical or oblique groove is provided in the.

  The mixing device of the present invention has a small number of parts, is easy to disassemble and assemble, and can reduce the frequency of disassembling and assembling. The fluid after mixing can be negatively ionized.

Next, the present invention will be described with reference to the drawings, but the present invention is not limited to the following description.
FIG. 1 is a cross-sectional view of the mixing apparatus of the present invention.
Reference numeral 1 denotes a supply hopper, that is, a receiving tank for a mixed substance such as liquid or powder. A discharge pipe 3 is provided at the lower portion of the discharge port 2 of the supply hopper 1. The discharge port 2 of the supply hopper 1 is provided with a vibration valve 4 shown in FIG.

  This vibration valve 4 is integrally provided with a rod-like body 6 at least at an upper part of a valve body 5 having a spherical shape, a spinning shape, an elliptical shape or the like. Further, by providing a protrusion on the entire surface of the valve body 5, it is possible to prevent a bridge from being formed in the discharge port 2 when supplying the powdery mixed substance. The shape of the rod-like body 6 may be linear or spiral. The rod-shaped body 6 may have various cross-sectional shapes such as a round shape, a triangular shape, a quadrangular shape, an elliptical shape, and the like. The rod-shaped body 6 may be a hollow body.

  The valve body 5 having a spherical shape, a spinning shape, or an elliptical shape can vibrate the vibration valve 4 by incorporating a small motor having an eccentric pulley therein. The power source for driving the small motor can be taken from the outside by incorporating a battery or the like in the valve body 5 or by arranging an electric wire in the hollow portion of the hollow rod-like body 6.

FIG. 3 is a side view of the main body of the mixing apparatus of the present invention.
Reference numeral 7 denotes a main body, and the main body 7 has a central passage 8 in the inner axial direction. On the outer wall surface of the annular cylindrical body 9 constituting the central passage 8 of the main body 7, it is preferable to provide a groove 10 that is linear, non-linear, or a combination of non-linear and linear as shown in FIG. In the case of a groove combined with a non-linear shape and a linear shape, a non-reversal direction in which the fluid flows in an annular space 13 formed between the cylindrical body 9 of the main body 7 and the inner chamber 12 of the housing 14, which will be described later. Since a uniform flow can be obtained by providing a straight line, it is preferable.

FIG. 4 is a cross-sectional view of the housing of the mixing device of the present invention.
A housing 14 having an internal chamber 12 that accommodates the main body 7 is provided with an annular curved recess or a straight gap 15 on the wall surface of the internal chamber 12. The housing 14 is provided with a connecting pipe 16 that leads to a fluid source for introducing fluid into the internal chamber 12, and opens to the annular space 13 of the internal chamber 12. The axis is biased to the central axis of the internal chamber 12.

  In the mixing apparatus of the present invention, the annular cylindrical body 9 of the main body 7 is inserted into the inner chamber 12 of the housing 14 and is integrally formed by bolts 18 as shown in FIG. With this configuration, an annular space 13 is formed between the inner chamber 12 and the annular cylindrical body 9 of the main body 7.

  Examples of the shape of the annular space 13 include a polygonal shape such as a square shape and a triangular shape such as a curved semicircle. In particular, a triangular shape having an apex angle of 120 ° is preferable, and the apex angle can be passed through the groove 10 without reducing fluid energy.

  Next, the discharge pipe 3 of the supply hopper 1 is inserted into the central passage 8 of the main body 7. The supply hopper 1 can be fixed by, for example, screwing the main body 7 and the discharge pipe 3 of the supply hopper 1 together. The length of the discharge pipe 3 is the same as that of the front end portion of the central passage 8 of the main body 7 when the supply hopper 1 is inserted or protrudes from the front end surface of the central passage 8. It is preferable to adjust so as to. The discharge pipe 3 of the supply hopper 1 is inserted into the central passage 8 of the main body 7. The central passage 8 and the discharge pipe 3 are insulated and the substance to be dissolved does not adhere to the main body. Easy cleaning.

  In order to adjust the diameter of the discharge pipe 3 of the supply hopper 1, it is possible to provide a small hopper of the same type as the supply hopper 1 in the supply hopper 1 at the discharge port 2 (not shown).

Next, a case where particles / powder (CMC, polymer flocculant, activated carbon, etc.) and the like are mixed with water using the mixing apparatus of the present invention will be described.
When the vibration valve 4 is stopped and the powder is placed in the supply hopper 1 and stored, and the vibration valve 4 is operated, the vibration valve 4 performs a jumping and pivoting motion while vibrating. Along with the jumping and turning movement of the vibration valve 4, the upper rod-like body 6 provided on the vibration valve 4 jumps and turns so as to follow the wall surface of the supply hopper 1, so that the powder supply hopper 1 in the supply hopper 1. Bridging inside can be prevented. Further, the lower rod-like body 6 provided in the vibration valve 4 rotates in the discharge port 2 so that the powder can be prevented from being blocked in the discharge pipe 3. The vibration valve 4 has various functions such as fine adjustment of powder and quantitative injection in addition to the powder valve function and bridge prevention function.

  The vibration valve 4 is a valve body that closes the discharge port 2 of the supply hopper 1 and a vibration drive unit, and the valve body 5 is a gravity valve (rubber / metal, synthetic resin, ceramic / paper, etc.) in the off state. The vibration valve 4 vibrates up and down due to vibrations such as electric and electromagnetic operations, and jumps by rotating left and right to give vibration to the discharge port 2 and the discharge pipe 3 of the hopper 1 and the substance to be dissolved. In this device, the vibration valve 4 is repeatedly turned on and off, so that no bridge or blockage occurs.

FIG. 5 is a cross-sectional view showing one embodiment of the vibration valve 4 of the mixing apparatus of the present invention.
In order to adjust the amount of the mixed substance falling from the supply hopper, the length of the rod-shaped body is adjusted, and the tip of the rod-shaped body 6 is hooked on the upper edge of the supply hopper by an appropriate means on the upper edge 11 of the supply hopper. It can be done by stopping.

  On the other hand, when fluid (liquid, gas, etc.) is introduced from the connecting pipe 16 provided in the housing 14 into the annular space 13 formed by the inner chamber 12 and the main body 7, the fluid swirls in the annular space 13. Flowing. At this time, since there is an annular curved recess 15 provided in the inner chamber 12 of the housing 14, the turning speed is increased and the pressure in the annular space 13 can be increased. When fluid is ejected from the annular space 13 through the linear, non-linear, or non-linear and linear grooves 10 of the main body 7 to the outside, the fluid intersects and a negative ionization phenomenon occurs. .

  The jetted fluid and the powder falling from the discharge pipe 3 of the supply hopper 1 are mixed instantaneously at the outlet of the housing 14 and discharged out of the mixing apparatus.

  Since there is an annular space 13 and a dent 15 in the fluid energy, the body 7 that is accelerated and pressurized by a swirling flow and cut in the forward direction on the circumference is linear, non-linear, or a combination of non-linear and linear. The fluid jets from the groove 10 to the center of the lower part and intersects in a concentrated manner to form a high-pressure jet stream having strong collision energy. Substances to be dissolved such as powder and liquid falling from the central part of the device main body through the discharge pipe 3 from the discharge port 2 of the hopper 1 are instantaneously dissolved, mixed and stirred in the air by the high-pressure jet flow described above. Etc. are performed. The fluid finely divided by the high-pressure jet flow is negatively ionized, and various effects such as maintaining the freshness of the dissolved substance and the electric / chemical reaction and physical properties of the added mixed substance can be obtained.

  When the substance to be dissolved is dropped into the center of the fluid formed as a high-pressure jet stream, it is screwed in by instantaneous pressure, and even a hardly soluble powder is mixed / dissolved in the middle of the air, so that it does not become a mako state.

  If the mixing device of the present invention is used, a hardly soluble substance such as calcium carbonate, sulfuric acid band, iron sulfate, polymer flocculant, activated carbon or the like is transported as a powder or granules, and is brought into an aqueous solution using the mixing device of the present invention at the destination. By doing so, it is possible to reduce the cost of a lorry vehicle or the like that was transporting a solution in the shipping source.

As another embodiment of the present invention, a method for treating polluted water using the mixing apparatus of the present invention will be described.
An aqueous solution of the flocculant in which the flocculant is dissolved in advance is supplied to the supply hopper 1 from a pipe or the like. At the same time, suspended particulate water is supplied to the supply hopper 1 through a pipe or the like. At the same time, when pressurized water is supplied from the connecting pipe 16, the coagulant aqueous solution and the polluted water introduced from the supply hopper 1 are mixed at the discharge port 2, and the supplied pressurized water from the connecting pipe 16 passes through the groove 10 and is discharged to the outside via high-pressure jet water. And then, at the outlet of the housing 14, it is mixed with high-pressure jet water and discharged in an instant. Thus, the aqueous solution discharged from the outlet portion of the housing 14 of the mixing apparatus of the present invention has a feature that the oxidation-reduction potential is lower than that of the aqueous solution before being discharged.
Furthermore, as another aspect, by supplying spray-like flash water from the nozzle or the like to the supply hopper 1, the flash water introduced from the supply hopper 1, the flocculant aqueous solution, and the suspended particle water are mixed, and the housing 14 From the outlet, it is mixed with pressurized water and discharged. As described above, the aqueous solution discharged from the outlet portion of the housing 14 of the mixing apparatus of the present invention has a feature that the oxidation-reduction potential is lower than that of the aqueous solution before discharge, and promotes a neutralization reaction having a high aggregating effect.
Examples of the water used for the pressurized water and the flush water include tap water, industrial water, water having a low oxidation-reduction potential, water that has processed wastewater, and filtered water.
The suspended particulate water to be supplied to the supply hopper 1 includes slurry precipitated in a sedimentation basin, concentrated slurry drainage obtained by concentrating the slurry in a concentration tank, dried slurry, and particulate matter such as bentonite, kaolin, titanium oxide, and drabite. An aqueous solution in which is dissolved in water.

  By supplying flush water to the supply hopper 1 from a nozzle or the like, the supply hopper 1 can be washed.

In the treated water discharged from the mixing apparatus of the present invention, the contaminated particles in the suspended particle water are flocked by the action of the flocculant. The treated water prepared in this way can be improved in the efficiency of treating the contaminated water, for example, by introducing it into the floc forming part of the cross-flow type sedimentation basin.
The treated water discharged from the mixing apparatus of the present invention has a feature that the oxidation-reduction potential is lower than that of the polluted water before flowing into the floc forming part, and promotes a neutralization reaction having a high aggregating effect in the floc forming part.

Further, as another embodiment, flush water is supplied from a nozzle or the like to the floc forming part of the cross-flow type sedimentation basin, and at the same time, an aqueous solution of the flocculant in which the flocculant is dissolved in advance is added to each floc forming part of the cross-flow type sedimentation basin By supplying to, the treatment efficiency of polluted water can be increased.

As another embodiment of the present invention, a method will be described in which the coagulation sedimentation treated water is treated using the mixing apparatus of the present invention, the loss head of rapid filtration is low, and the washing frequency of the filter medium can be lowered.
An aqueous flocculant solution is supplied to the supply hopper 1. At the same time, when pressurized water is supplied from the connecting pipe 16, the flocculant aqueous solution introduced from the supply hopper 1 is instantaneously mixed with the pressurized water and discharged at the outlet of the housing 14. Thus, the aqueous solution discharged from the outlet portion of the housing 14 of the mixing apparatus of the present invention has a feature that the oxidation-reduction potential is lower than that of the aqueous solution before being discharged. When the flocculant is mixed with the coagulation sedimentation treatment water and rapid filtration is performed, by using an aqueous flocculant solution with a low oxidation-reduction potential, a small amount of residue (floc, fine particles, bacteria, bacteria) contained in the coagulation sedimentation treatment water Etc.) can be flocified in a short time by reducing the oxidation-reduction potential, and can be easily removed and rapidly filtered to reduce the head loss and reduce the frequency of washing of the filter medium. When pressurized water is supplied from the pipe 16, the liquid / powder introduced from the supply hopper 1 is made into fine particles, the mixing time can be shortened, and the reaction time can be shortened.

According to the method of the present invention, it is possible to prevent ionized aluminum from being discharged from the sedimentation basin without being treated when a conventional aluminum flocculant is used.
According to the method of the present invention, the contaminated water to be treated is, for example, raw water for tap water (dam water, river water, lake water), industrial water, raw water for manufacturing water, sewage waste water, factory waste water, manufacturing waste water, etc. Can be suitably processed.

Sectional drawing of the mixing apparatus of this invention. The side view which shows an example of the vibration valve of the mixing apparatus of this invention. The side view of the main body of the mixing apparatus of this invention. Sectional drawing of the housing of the mixing apparatus of this invention. Sectional drawing which shows one embodiment of the vibration valve of the mixing apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Supply hopper 2 ... Discharge port 3 ... Discharge pipe 4 ... Vibration valve 5 ... Valve body 6 ... Rod body 7 ... Body 10 ... Groove 12 ... Inner chamber 13 ... Annular space 14 ... ‥housing

Claims (2)

A supply hopper, a main body having a central passage in the inner axial direction, and a housing having an inner chamber for accommodating the main body, and a liquid for mixing with a mixed substance through the side wall of the housing between the inner chamber and the main body. In a mixing device that is provided so that an annular space is formed between them, and mixes and mixes the mixed substance and fluid that fall through the central passage portion, the discharge pipe of the supply hopper is inserted into the central passage of the main body In addition, the discharge valve of the supply hopper is provided with a vibration valve with a bar-like body provided vertically at the top, a curved recess is provided on the wall surface of the inner chamber of the housing, and the outer wall surface of the main body has a vertical or oblique shape. A mixing apparatus characterized by providing a groove. 2. The mixing apparatus according to claim 1, wherein a front end portion of the discharge port of the supply hopper inserted into the central passage of the main body is the same as a surface of the main passage with the front end portion of the central passage or protrudes from a front end surface of the central passage. The mixing device according to claim 1, wherein the mixing device is provided.

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