KR100527665B1 - Impeller for gas and liquid mixing pump and gas and liquid mixing pump containing the same - Google Patents

Abstract

The present invention relates to an impeller for a gas-liquid mixing pump and a gas-liquid mixing pump including the same, and the basic structure of the impeller for a gas-liquid mixing device according to the present invention is fixed to an upper surface of a disc body having a plurality of through holes and a disc body. And a plurality of curved guide vanes having gas guide passages in communication with each of the holes, and a shaft accommodating portion mounted on the bottom of the disc body such that the shaft is mounted and the gas flow path communicates with the gas guide passages through the through holes. The gas-liquid mixing pump according to the present invention is composed of the front and rear housings and the aforementioned impeller housed therein, so that the gas can be highly dissolved in the liquid by generating a large amount of fine bubbles continuously and at the same time, such a high gas dissolution rate ( 액체) it can smoothly and efficiently transfer liquid, and the noise is relatively low and its structure is short. It has high economic feasibility such as low initial installation cost, almost no breakdown, easy replacement of impeller, and relatively low energy cost. Therefore, it has high economic feasibility, such as food and pharmaceutical fermentation field, wastewater treatment field, fish farming and It can be widely applied to aquaculture field, live fish transportation and storage field, special purpose industrial field such as foam resin production, foam capture of egg white and ice cream production, and household field.

Description

IMPELLER FOR GAS AND LIQUID MIXING PUMP AND GAS AND LIQUID MIXING PUMP CONTAINING THE SAME}

The present invention relates to an impeller for a gas-liquid mixing pump and a gas-liquid mixing pump including the same, and more particularly, has a high efficiency to dissolve a large amount of gas in a liquid in a short time, while also having low noise and low energy cost. The present invention relates to a gas-liquid mixing pump having a relatively small and simple structure and having good manufacturability and maintainability, and an impeller for a gas-liquid mixing pump that can be preferably applied thereto.

In general, a pump is a fluid machine that receives power from a driver such as a motor, an engine, a turbine, or the like to transport a fluid such as a liquid or a gas through a pipe, or pumps a fluid in a low pressure container into a high pressure container through the pipe. According to the structure, it can be divided into reciprocating pump, rotary pump, centrifugal pump, axial pump, friction pump and other pumps.

Pumps are widely used for coal mine drainage, ships, pumping, buildings, water supply, sewerage, drainage, agricultural irrigation, industrial water, power plants, and various plants. Pumps are widely used for transporting not only water but also special fluids such as petroleum, various chemicals or pulp and viscous sludge.

Meanwhile, the gas-liquid mixer may be roughly classified into a screw or impeller rotating method using a motor and a pulsation type bubble generating method using a compressor, and depending on the processing type, a batch type and a continuous type may be used. type), and the batch type includes aerobic fermentation tanks used for food and pharmaceutical fermentation, aeration tanks used for wastewater treatment, aberration type aerators used in fish farms, or aquaculture farms, and continuous mixing type air mixing pumps. Etc. can be mentioned.

Gas-liquid mixers are widely used in food and pharmaceutical fermentation, wastewater treatment, fish farming and aquaculture, live fish transportation and storage, special purpose industries such as foaming resins, foam capture for egg whites and ice cream manufacturing, and household applications. have.

However, the conventional screw, impeller or water wheel rotation method has the advantages of relatively low noise and low energy cost, but the shape of the screw, impeller or water wheel does not deviate significantly from the conventional form. Since there is a serious problem that the gas dissolution efficiency is low, it is rarely used.

On the other hand, the conventional pulsation bubble generation using a compressor has the advantage that the gas dissolution efficiency is relatively high compared to the screw or impeller rotation method, but the most widely used conventionally, the pulsation noise is relatively large and consumes a lot of energy costs. There is a problem that the maintenance cost of the compressor is high, and in order to increase the dissolution efficiency of the gas, it is necessary to make the size of the bubble fine, but for this purpose, high load is required because the introduction gas must pass through a porous body having a plurality of fine pore sizes. There is a serious problem that the above problems are bound to be more severe.

Therefore, there has been a need in the art for an efficient gas-liquid mixing pump capable of highly dissolving gas in a liquid by continuously generating a large amount of fine bubbles and at the same time smoothly transferring a liquid having such a high gas dissolution rate. .

Moreover, efficient gas-liquid mixers, which are low in noise, relatively low in energy cost, simple in construction and low in initial installation and maintenance costs, have long been desired in the art.

It is a first object of the present invention to provide an efficient gas-liquid mixing pump that can dissolve a gas in a liquid by continuously generating a large amount of fine bubbles and at the same time smoothly transport a liquid having such a high gas dissolution rate. It is for.

In addition to the first object described above, the second object of the present invention is relatively low noise, and its configuration is simple, so that the initial installation cost is low, there is almost no failure, easy replacement of the impeller, and relatively low energy cost. It is to provide a gas-liquid mixing pump having sex.

It is a third object of the present invention to provide an impeller that can be effectively applied to the gas-liquid mixing pump described above.

As used herein, the term 'gas liquid' generally means 'air and water', but the present invention is not limited thereto, and oxygen, carbon dioxide, or other types of gases, ethanol, polymers, and the like. It is defined as including all types of liquids such as mixed liquids such as resin liquid, wastewater containing solids, and the like.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an impeller 1 and a front housing 10 for a gas-liquid mixing pump according to a first preferred embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the impeller 1 of FIG. As will be described together for convenience.

In the illustrated example, the impeller 1 according to the first embodiment of the present invention has a disc body 2 having a plurality of through holes 5 in a region adjacent to the shaft hole (not shown), so as to form a pinwheel shape as a whole. A plurality of curved guide vanes 4 and a shaft 20, which are fixed to an upper surface of the disc 2 and have a gas guide path 3 in communication with the respective through holes 5, are mounted. The flow path 6a consists of the shaft accommodating part 7 attached to the bottom face of the said disc body 2 so that the flow path 6a may communicate with the gas guide path 3 through the through holes 5, 5a, 5b.

Each of these components may be manufactured separately and then fixed by welding or suitable fastening means, but it may be desirable in terms of durability to be integrally formed.

The shaft 20 is inserted into the shaft receiving portion 7 and then fixed by the fixture 30, and the encapsulation body 9 is mounted on a portion of the outer circumference of the shaft 20.

In the illustrated example, a plurality of linear baffles 8 are formed on the upper surface of the disc 2 extending from the outer circumference toward the center to reinforce the flow of the liquid, but this is not limitative in the present invention. Is arbitrary.

Next, the front housing 10 in FIG. 1 will be described. The front housing 10 houses the impeller 1 that rotates together with the rear housing (not shown) into which the motor shaft is fitted, and the liquid suction hole in the center portion thereof. 13 and a cover 11 having a rim 12 at its outer periphery.

Optionally, the inner surface periphery of the cover 11 has a plurality of springs 8a of long length arranged radially, a plurality of springs 8b of vertical length standing vertically, and a plurality of spring segments 8c. , Various shapes of gas-liquid contact increasing means, such as a plurality of short rectangular pieces 8d, may be fixed by any fixing means known in the art, such as spot welding, in which case the above-mentioned upper surface of the disc 2 It should be formed so that it does not come into contact with one straight baffle 8.

Therefore, when the impeller 1 is rotated by the rotation of the shaft 20 connected to the driving means (not shown), since a negative pressure is formed at the periphery of the disc 2, gas such as air is strongly sucked in, so that the gas flow passage 6a ) And through the through holes 5b, 5a, 5 are sequentially discharged to the above-mentioned peripheral portion of the disc body 2 through the gas guide path (3) inside the guide blade (4), and at the same time the front housing (10) The liquid flowing in through the liquid suction hole 13) is strongly agitated with the gas discharged by the rotation of the curved guide vane 4 and strongly collides with the gas-liquid contact increasing means described above, while having a finer bubble. Because of the fact that it is broken into a liquid, the contact area between the liquid and the gas is increased, so that a liquid having a very high gas dissolution rate can be obtained. The liquid having such a high gas dissolution rate is the front housing 10 and the rear housing. (Mido It discharges through the gas-liquid mixed-flow discharge hole (not shown) (namely, located in the outer periphery side of the impeller 1) formed in the both sides or any one rim.

3A and 3B are perspective views of impellers 1a and 1b for a gas-liquid mixing pump according to a second preferred embodiment of the present invention, which will be described together for convenience.

Since the basic configuration of these impellers 1a and 1b is essentially the same as that of the impeller 1 shown in Figs. 1 and 2 described above, only the differences will be described.

In the illustrated example, the upper periphery of the disc 2 (specifically, the outside of the portion where the plurality of guide vanes 4 are arranged in the pinwheel shape) has already been mentioned in the description of the front housing 10 described above. A gas-liquid contact increasing means is attached.

1 and 2 illustrate an example in which a linear baffle 8 is formed on the upper surface of the disk 2, but in FIGS. 3A and 3B, the upper edge of the disk 2 is illustrated. A plurality of springs 8b of short length, a plurality of spring segments 8c, a plurality of short rectangular pieces 8d, a plurality of short wave lengths 8e, short length Gas-liquid contact augmentation means of various shapes, such as a plurality of cylindrical sections 8f, a plurality of springs 8f of long length arranged along the circumferential direction, are fixed by any fixing means known in the art, such as spot welding. An example is shown.

It should be noted that in the above-described example, FIGS. 1, 3A, and 3B are just one example of various examples for convenience of illustration, and any one of the above-described examples for balance during rotation in actual application It is to select and form only.

The material of the impeller according to the present invention may be formed of a metal material, a resin material, a ceramic material, an engineering plastic, or the like, and the fixing method of various types of gas-liquid contact increasing means such as the spring may be appropriately selected according to the material. Of course, the fixing method itself can be appropriately selected by those skilled in the art.

4 is a perspective view of an impeller 1c for a gas-liquid mixing pump according to a third preferred embodiment of the present invention, wherein the impeller 1c is circumferentially or plural arc-shaped through holes (not shown) in a central region adjacent to a shaft hole (not shown). First disc body 2 (substantially the same as the lower structure of the disc body 2 in FIG. 2) having a shaft portion 7 at its bottom center, and a gas flow passage 6 at the center thereof. A core body 41 having a plurality of openings 44 formed in the side wall 43 and a plurality of curved guide vanes 4 extending outward from the outer circumferential surface thereof and the openings 44 of the core body 41 described above. ) And a gas-liquid contact increasing means 8a as a spring fixedly abutting the convex bent portion of the guide vane 4 and extending outward from the end of the guide vane 4, wherein the first disc body ( 2) circumferential or plural arc-shaped through holes (not shown) and the core body 41 The screw 40 is mounted on the center of the upper surface of the first disk body 2 so that the gas flow passage 6 communicates therewith, and is located above the first disk body 2 and the screw 40, It consists of the 2nd disk 2b which is fixed to the said 1st disk 2 by the support angle 2b, and has the liquid suction hole 2c in the center.

Accordingly, the gas is formed in a cylindrical or plural circular through hole (not shown) in the central region adjacent to the shaft hole (not shown) through a gas flow path (not shown: 6a in FIG. 2) in the shaft housing 7. After passing through, it is discharged to the gas-liquid contact increasing means 8a as a spring contacting the gas flow path 6 and the opening 44 of the core body 41, and the suction hole of the front housing (not shown) ( It is mixed with the liquid sucked through the (not shown) and is discharged through the discharge hole (not shown) formed in the rim of the rear housing (not shown) while being broken into fine bubbles by the gas-liquid contact increasing means 8a.

As described above, the impeller 1c for the gas-liquid mixing pump according to the third preferred embodiment of the present invention also has a front housing (not shown) having a liquid suction hole and a rear housing through which a driving shaft is formed and a discharge hole is formed in the rim (not shown). Is housed in to constitute a gas-liquid mixing pump.

On the other hand, also in the case of the impeller 1c for gas-liquid mixing pump according to the third preferred embodiment of the present invention, optionally, various types of gas-liquid contact increasing means 8, 8a to 8g as described above may be used as the first disc body ( It is of course possible to form the upper peripheral edge of 2) and / or the lower peripheral edge of the second disc 2a.

For reference, the rotational direction of the screw 40 is a direction (ie, counterclockwise) in which the gas-liquid contact increasing means 8a as a spring is in direct contact with the liquid.

Fig. 5 is a perspective view of an impeller 1d for gas-liquid mixing pump according to a fourth preferred embodiment of the present invention, the basic configuration of which is an impeller 1c for gas-liquid mixing pump according to a third preferred embodiment of the present invention shown in Fig. 4. Are substantially the same, so only the differences will be explained.

The impeller 1d for the gas-liquid mixing pump according to the fourth preferred embodiment of the present invention may be used together with the above-described second disc body or may be used as shown, and the gas-liquid mixing according to the third embodiment described above. Compared with the pump impeller 1c, the gas guide path 3 is formed in each of the plurality of guide vanes 4 in communication with each of the plurality of openings 44 formed in the side wall 43 of the core body 41, On the rear surface of the guide blade 4 in the rotational direction (that is, the counterclockwise direction) (that is, the rear surface of the guide blade 4), a support 45 extending outward to fix and support the gas-liquid contact increasing means 8a as a spring is provided. Is formed.

Thus, the gas is circumferentially or plural arc-shaped through holes (not shown) in the central region adjacent to the axial hole (not shown) through a gas flow path (not shown: 6a in FIG. 2) in the shaft housing (not shown). Through the gas flow path 6 of the core body 41 and the opening 44 of the side wall 43, and then the gas-liquid contact as a spring contacting it through the gas guide path 3 of the guide vane 4 via the gas passage 6 of the core body 41. The rear housing is discharged to the increasing means 8a, mixed with the liquid sucked through the suction hole (not shown) of the front housing (not shown), and simultaneously broken into fine bubbles by the gas-liquid contact increasing means 8a. It is discharged through the discharge hole (not shown) formed in the rim of the (not shown).

Similarly, even in the case of the impeller 1d for gas-liquid mixing pump according to the fourth preferred embodiment of the present invention, various types of gas-liquid contact increasing means 8, 8a to 8g as described above may be selectively used. Of course, it can be formed on the upper peripheral edge of the.

FIG. 6 is a perspective view of an impeller 1e for a gas-liquid mixing pump according to a fifth preferred embodiment of the present invention, and has a disc body 2 and a gas flow passage 6 in upper and lower center portions of the disc body 2. The core body 41 to be mounted, a plurality of guide vanes 4 extending radially from the outer circumferential surface 42 of the core body 41 and having the same height as the core body 41, and the plurality of Gas-liquid contact increasing means 8a and the gas-liquid contact as springs, which are located between the guide vanes 4 of the core and extend from the outer circumferential surface 42 of the core body 41 to the outer circumference of the disc body 2 described above. It consists of a gas-liquid contact increasing means 8b as a spring which abuts on the outer side of the increasing means 8a and has the same length as the above-described guide vane 4.

Each of these components may be manufactured separately and then fixed by welding or a suitable fixing means, but may also be formed integrally, and the gas-liquid contact increasing means 8a is suitable for spot welding or the like on the disc 2. It is fixed by known fixing means and the gas-liquid contact increasing means 8b can likewise be fixed to the gas-liquid contact increasing means 8a.

The gas is formed in a cylindrical or plural circular through hole (not shown) in the central region adjacent to the shaft hole (not shown) through a gas flow path (not shown: 6a in FIG. 2) in the shaft housing (not shown). After passing through, the gas is discharged via the gas flow passage 6 of the core 41, and mixed with the liquid sucked through the suction hole (not shown) of the front housing (not shown) and at the same time the gas-liquid contact increasing means ( It is discharged through the discharge hole (not shown) formed in the rim of the rear housing (not shown) while broken into fine bubbles by 8a, 8b).

As described above, the gas-liquid mixing pump including the impeller according to the present invention is capable of highly dissolving gas in the liquid by continuously generating a large amount of fine bubbles, and at the same time, the liquid having such a high gas dissolution rate Besides being able to transfer smoothly and efficiently, it has relatively low noise and simple configuration, so it requires less initial installation cost, almost no failure, easy replacement of impeller, and relatively good energy maintenance. Because of its high economic feasibility, food and pharmaceutical fermentation, wastewater treatment, fish farming and aquaculture, live fish transportation and storage, special purpose industries such as foaming resins, foam capture and ice cream production for egg whites, and households It can be applied to a wide range.

1 is an exploded perspective view of an impeller and an upper casing for a gas-liquid mixing pump according to a first preferred embodiment of the present invention.

2 is a schematic cross-sectional view of the impeller of FIG. 1.

3A and 3B are perspective views of an impeller for a gas-liquid mixing pump according to a second preferred embodiment of the present invention.

4 is a perspective view of an impeller for a gas-liquid mixing pump according to a third preferred embodiment of the present invention.

5 is a perspective view of an impeller for a gas-liquid mixing pump according to a fourth preferred embodiment of the present invention.

6 is a perspective view of an impeller for a gas-liquid mixing pump according to a fifth preferred embodiment of the present invention.

-Explanation of symbols for the main parts of the drawings-

1,1a, 1b, 1c, 1d, 1e: Impeller for gas-liquid mixing pump according to a preferred embodiment of the present invention

2,2a: disc 2b: support angle

2c: liquid suction hole 3: gas induction furnace

4: guide wing 40: screw

41: core body 42: outer peripheral surface

43: side wall 44: opening

45: support 5,5a, 5b: through hole

6,6a: gas passage 7: shaft housing

8a, 8a ', 8b, 8c, 8d, 8e, 8f, 8g: gas-liquid contact increasing means

9: encapsulation 9a, 9b: tall

10: front housing 11: cover

12: figure 13: liquid inlet

20: axis 30: encapsulation

Claims (8)

A disk body having a plurality of through holes in an area adjacent the shaft hole; A plurality of curved guide vanes fixed to an upper surface of the disc body so as to form a pinwheel as a whole, and having a gas induction path communicating with each of the through holes; And The shaft is mounted and consists of a shaft receiving portion mounted to the bottom of the disk body so that the gas flow path communicates with the gas induction path through the through hole Impeller for gas-liquid mixing pumps. 2. The impeller for gas-liquid mixing pump according to claim 1, wherein a plurality of linear baffles are formed on the upper surface of the disc body extending from the outer circumference toward the center. A first disc body having a circumferential or plural arc-shaped through holes in a central region adjacent to the axial holes and having a shaft accommodating portion at a central portion thereof; A core body having a gas flow path formed in the center and a plurality of openings formed in the side wall, a plurality of curved guide vanes extending outward from the outer circumferential surface thereof, and the openings of the core bodies and the convex curved portions of the guide vanes. The first disk member includes a spring which is fixed in contact and extends outwardly from an end of the guide vane, and communicates the circumferential or plural circular holes of the first disk member with the gas flow path of the core body. Screw mounted to the center of the upper surface; And It is composed of a second disk body positioned above the first disk body and the screw and fixed to the first disk body by a plurality of support angles and having a liquid suction hole in the center. Impeller for gas-liquid mixing pumps. A disk body having a circumferential or plural arc-shaped through hole in a central region adjacent to the axial hole and having a shaft accommodating portion at the center of its bottom; And A core body having a gas flow path formed in the center and a plurality of openings formed in the side wall, and a gas induction path communicating with each of the openings of the core body, extending outward from the outer circumferential surface of the core body, the rear surface of which is formed outwardly. And a plurality of curved guide vanes having an extended support, and springs respectively fixed to the support, such that the circumferential or plural circular through holes of the disc body communicate with the gas flow path of the core body. Consists of a screw mounted in the center of the upper surface of a disc Impeller for gas-liquid mixing pumps. Disc; A core body having a gas flow path and mounted on the upper and lower center portions of the disc body; A plurality of guide vanes extending radially from an outer circumferential surface of the core body and having the same height as the core body; Located between the plurality of guide vanes and extends from the outer circumferential surface of the core body to the outer periphery of the disc body and a spring contacting the outside of the spring and having the same length as the guide wing Impeller for gas-liquid mixing pumps. (delete) 6. A spring, a spring section, a rectangular section, a wave section, a cylindrical section, and a circumferential direction, each of which is erected perpendicularly to the upper periphery of the disc body. An impeller for a gas-liquid mixing pump having a plurality of fixed shapes selected from the group consisting of springs arranged. A front housing having a liquid suction hole; A rear housing through which the driving shaft of the driving means passes and the discharge hole is formed in the rim; And An impeller according to any one of claims 1 or 3 to 5, which is received between the front and rear housings and is connected to the drive shaft and rotates. Gas-liquid mixing pump.