KR20180113477A - Device for discharging and mixing fluids having circulation structure - Google Patents

Abstract

According to the present invention, provided is a device for discharging and mixing fluids having a circulation structure, wherein the circulation structure comprises: a pump unit in which a first fluid is introduced and discharged; a discharge pipe connected to the pump unit; a circulation pipe connecting the discharge pipe and the pump unit; and a second fluid inflow pipe serving as a passage for introducing the second fluid to the pump side, and a mixing flow velocity device and a manure screw are provided to improve the mixing of fluids.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for discharging mixed fluids having a circulation structure,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid mixing / dispensing apparatus, and more particularly, to a fluid mixing / dispensing apparatus in which two or more different fluids such as water and air are mixed and discharged to improve their mixing properties.

Generally, wastewater is treated by water treatment at all times due to environmental pollution, so that the biological oxygen demand (BOD) is reduced to the minimum. The aeration unit is used in the wastewater treatment tank to supply the necessary oxygen for biological treatment of wastewater or to activate water by supplying oxygen in water.

Korean Patent Registration No. 10-0762885 (Sep. 21, 2007), filed by the same applicant, discloses a slim type fast aerator having a multi-stage mixed structure. 1 is a schematic view showing a conventional high-speed aeration apparatus.

Referring to FIG. 1, a conventional fast aeration apparatus 1 includes an air mixing device 10 for mixing and discharging air to be treated 7 with air at high speed and high efficiency, And an underwater pump 3 for forcibly circulating the air to the upper side of the air mixing device 10 through the pump 4. The air mixing apparatus 10 is installed such that the upper end floats above the water surface by means of a separate winch.

The air mixing apparatus 10 is provided with a lid 11b for cleaning the interior of the first water hydraulic cylinder 11 and an inlet pipe 11a through which the liquid to be treated 7 is introduced into the upper side, And extends horizontally so as to be connected by the hose 4 and the connection fixture 4a. A first accelerating device 13 for accelerating a descending speed when the introduced liquid 7 to be introduced falls freely from the inside of the first male staff barrel 11 is formed at the lower side of the first male staff barrel 11 do. The first accelerating device 13 takes the form of a Laval nozzle having an inner diameter smaller than that of the upper and lower ends. After the hydraulic pressure increases in the middle part, the pressure is lowered and the fluid velocity It accelerates.

A second hydraulic cylinder 15 is provided below the first accelerator 13. The upper end of the second male occupant cylinder 15 is sealed to the outside of the first accelerator 13 and the first air injector 15a A second accelerating device 15b for increasing the descending speed of the liquid to be treated 7 is disposed at an intermediate portion thereof and a discharge portion 15c having a smaller diameter than the upper end is provided at the lower side thereof.

A third male staff barrel 17 is provided on the lower side of the second male staff barrel 15. The upper end of the third male staff barrel 17 is sealed to the outside of the second accelerator 15b and the outside air is introduced above the lower end level of the discharge portion 15c of the second male staff barrel 15 The second air injection unit 17a is disposed and the mixed liquid 9 of the target liquid 7 and the air is discharged from the lower discharge port 17b.

The first to third male staff cylinders 11, 15, and 17 form a first path Fs through which the target liquid 7 passes. The call passage 20 is coupled to one side of the first to third male staff cylinders 11, 15, 17 so as to form a second path Fa through which air is introduced. The arbor tube 20 includes an air inlet pipe main body 23 made of a rectangular tube and an air inlet portion 21 extending vertically so as to be exposed to the air from the air inlet pipe main body 23.

When the liquid to be treated 7 is accelerated at a high speed while passing through the first accelerator 13 and discharged into the second hydraulic staff cylinder 15, A strong negative pressure is generated in the lower side and the air introduced from the outside through the air introducing portion 21 is sucked by the strong negative pressure under the first accelerator 13 and mixed with the liquid to be treated 7 at the high speed, .

Thereafter, the to-be-treated liquid 7, which is primarily mixed with the air in the second male staff barrel 15, is mixed with the air so that the pressure is somewhat lowered and the flow velocity is temporarily lowered. However, (15b), and the secondary acceleration is performed. The liquid to be treated 7 passes through the second accelerator 15b at a high speed and a strong negative pressure is generated in the third male staff barrel 17. [ The external air introduced from the air introducing portion 21 is sucked through the second air injecting portion 17a by the strong negative pressure on the lower side of the second accelerator 15b and mixed with the liquid to be treated 7 at the high speed, .

The conventional high-speed aeration device 1 has a limit in mixing efficiency of water and air, and is formed by a method of forming a negative pressure and mixing external air while passing through a multi-stage accelerator. It is necessary to develop a fluid mixed ejection apparatus having the above-

Korean Registered Patent No. 10-0762885 (September 21, 2007)

In order to solve such a conventional problem, there is provided a fluid mixed ejection apparatus in which two or more different fluids such as water and air are mixed and discharged to improve the mixing property between them.

A fluid mixing and dispensing apparatus having a circulation structure includes a motor unit connected to a pump unit to drive a pump unit, a pump unit having an inlet unit through which the first fluid flows and an outlet through which the fluid is discharged to one side, A circulation pipe connected at one end to the discharge pipe and connected at the other end to an inlet of the pump unit; and a circulation pipe connected at one end to the circulation pipe, And a second fluid inlet pipe serving as a passage through which the fluid is mixed.

In this case, one side of the second fluid inflow pipe is connected to the discharge pipe between the discharge port and the part where the circulation pipe is connected.

A fluid mixing and dispensing apparatus having a circulation structure of the present invention includes a motor unit connected to a pump unit to drive a pump unit, a pump unit having a discharge port through which the first fluid flows and is discharged to one side, A first fluid inlet pipe through which the fluid flows and a discharge pipe connected to the discharge port and serving as a passage through which the fluid discharged from the pump unit is discharged to the outside, one end connected to the discharge pipe and the other end connected to the first fluid inlet pipe And a second fluid inlet pipe connected to the circulation pipe and serving as a passage through which the second fluid flows, the circulation pipe being connected to the circulation pipe.

In this case, one side of the second fluid inflow pipe is connected to the discharge pipe between the discharge port and the part where the circulation pipe is connected.

In this case, one side of the second fluid inflow pipe is connected to the first fluid inflow pipe.

In this case, the circulation pipe is provided with a venturi portion, and the second fluid inlet pipe is connected to the circulation pipe at a portion provided with a venturi portion.

In this case, the discharge pipe is provided with a venturi portion, and the second fluid inlet pipe is connected to the discharge pipe at a portion provided with a venturi portion.

In this case, the first fluid inlet pipe is provided with a venturi portion, and the second fluid inlet pipe is connected to the first fluid inlet pipe at a portion provided with a venturi portion.

The pump unit includes a hollow casing having an inlet portion through which the first fluid flows and an outlet through which the first fluid is discharged, an impeller portion rotatably provided in the casing, A flow rate device; The mixed flow rate device includes a fixed plate installed to be coupled with the casing, and a plurality of projections extending from the fixed plate to the fixed plate.

In the above, the discharge pipe is composed of a plurality of pipes, and the plurality of pipes are connected by a manure screw; And a mesh is provided on the inside of the filtering screw so that the fluid flowing through the discharge pipe is discharged through the filter.

In the above, a plurality of rod-like rims protruding radially inward from the inner diameter of the operation screw are provided.

The fluid mixing and dispensing apparatus according to the present invention dramatically improves the mixing performance by mixing two or more different fluids such as water and air and discharging the fluids by repeatedly performing mixing between fluids.

FIG. 1 is a schematic view showing a conventional high-speed aeration apparatus,
2 is a perspective view illustrating a fluid mixing / dispensing apparatus having a circulation structure according to the present invention,
3 is a cross-sectional view showing a fluid mixed ejection apparatus having a circulation structure according to the present invention,
4 is a cross-sectional view showing a part of a fluid mixed ejection apparatus having a circulation structure of the present invention,
5 is a front view showing the pump unit of the present invention,
Figure 6 is a perspective view of a mixed flow rate device of the present invention,
7 is a cross-sectional view showing a part of a fluid mixed ejection apparatus having a circulation structure of the present invention,
FIG. 8 is a perspective view showing the operation screw of the present invention. FIG.

Hereinafter, a fluid mixed ejection apparatus having a circulation structure according to the present invention will be described in detail with reference to the accompanying drawings. In the detailed description, description of the contents described in the prior art will be omitted.

FIG. 2 is a perspective view illustrating a fluid mixing / dispensing apparatus having a circulation structure according to the present invention, FIG. 3 is a cross-sectional view illustrating a fluid mixing / dispensing apparatus having a circulation structure of the present invention, FIG. 5 is a front view showing the pump unit of the present invention, FIG. 6 is a perspective view showing the mixed flow rate device of the present invention, and FIG. 7 is a cross- Sectional view showing a part of the fluid mixing / discharging apparatus, and Fig. 8 is a perspective view showing the operation screw of the present invention.

A fluid mixing and dispensing apparatus (100) having a circulation structure according to this embodiment of the present invention is an apparatus for mixing water and air and discharging the mixed fluid, wherein the first fluid is water and the second fluid is air. It is noted that the first and second fluids can be applied to other fluids other than water and air in the present embodiment.

In the following description, the first fluid is referred to as water and the second fluid is referred to as air, and the lateral direction of FIG. 3 is referred to as "axial direction" and the longitudinal direction as "radial direction".

2 and 3, a fluid mixing and dispensing apparatus 100 having a circulation structure according to the present invention includes a motor unit 110, a pump unit 120, a discharge pipe 130, a circulation pipe 140 , A second fluid inlet pipe (150), and a manure screw (160).

3 and 4, the motor unit 110 is connected to the pump unit 120 to drive the pump unit 120. As shown in FIG. The motor unit 110 includes a motor and a power transmission shaft 111 connected to the motor unit and coupled to the pump unit 120. The motor described above is a well-known technology, and a detailed description of the motor will be omitted.

The pump unit 120 is coupled to the power transmission shaft 111 and driven. The pump unit 120 is installed so as to be immersed in water. The pump unit 120 is installed so as to be submerged in water to allow water to flow therein. The pump unit 120 receives water and discharges the water to one side. The pump unit 120 includes a casing 121, an impeller unit 123, and a mixed flow rate device 129.

The casing 121 has a substantially cylindrical shape having a space portion therein. The impeller portion 123 and the mixed flow rate device 129 are provided in the casing 121. The casing 121 includes an inlet 1211 and an outlet.

The inlet portion 1211 is formed to communicate with the outside, and the pump portion 120 is installed so as to be submerged in water, so that water flows into the inlet portion 1211. The inlet portion 1211 has a hole axially outward of the casing 121. The inlet (1211) is further provided with a cover in a cylindrical shape connected to the casing (121). The cover is connected to the casing 121 and has an inlet 1211a.

The inlet 1121a is provided on the cover in plurality. The size of the inlet 1121a is formed small so as to prevent large foreign matter such as branches from passing through. Accordingly, the inlet 1211a is formed and water is prevented from entering into the pump unit 120 due to the entry of water.

The inlet 1211 may further include a first fluid inlet pipe (not shown). The first fluid inflow pipe is a passage through which the water flows into the hollow body. One side of the first fluid inflow pipe is connected to the pump unit 120 and the other side is opened. The first fluid inlet pipe is provided to allow water to flow in the axial direction to the pump unit 120. Accordingly, water supplied from the other side of the first fluid inflow pipe (not shown) flows into the pump unit 120.

The discharge port is formed radially outward of the casing 121. The discharge port is formed so that water flowing into the pump unit 120 is discharged. The discharge port is connected to the discharge pipe 130. The water flows from the pump unit 120 to the discharge pipe 130 through the discharge port.

As shown in FIG. 5, the impeller 123 is rotatably installed in the casing 121. The impeller portion 123 is coupled to the power transmission shaft 111 and is rotated by the power of the motor portion 110. The impeller portion 123 is rotated to introduce water into the pump portion 120 and to mix water and air. The impeller portion 123 includes a rotary blade 1231.

The rotary vane 1231 is formed in a streamlined shape and protrudes in the axial direction. The rotary vane 1231 is rotated radially outward in the axial direction. As the rotary vane 1231 rotates, water flowing in the axial direction from the inlet 1211 flows radially outward and is discharged through the outlet.

As shown in FIGS. 4 and 5, the mixed flow rate device 129 is coupled to the inside of the casing 121. The mixed flow rate device 129 is disposed between the impeller part 123 and the casing 121 and is coupled to the outside of the casing 121 in the radial direction. The mixed flow rate device 129 is provided to allow the fluid discharged from the pump unit 120 to pass therethrough. The mixed flow rate device 129 is made of metal. The mixed flow rate device 129 includes a fixed plate 1291 and a projection 1293.

As shown in FIG. 6, the fixing plate 1291 is formed in a plate shape. The fixing plate 1291 is formed with a coupling groove and is screwed with the casing 121. The fixing plate 1291 is provided with a projection 1293.

The protrusions 1293 are formed at both ends of the fixing plate 1291 and extend from the fixing plate 1291 in the vertical direction. The protrusion 1293 is formed in a rod shape. The projections 1293 are formed in plural. The protrusions 1293 may have different heights. The protrusions 1293 are formed so as to intersect with each other at one end and the other.

The protrusion 1293 is formed and water and air discharged through the impeller 123 pass through. Water and air flow through the protrusions 1293 in various directions. As a result, the mixing of water and air is improved, and a moment when the flow path is narrowed through the protrusions 1293 is formed and the flow velocity is increased.

Further, when the protrusions 1293 are formed to have different heights or cross each other at one end and at the other end, more flow is formed when water and air pass. A large amount of flow is formed and the mixing of water and air is improved.

As shown in FIG. 3, the discharge pipe 130 is a hollow body, and is formed of a plurality of pipes. One side of the discharge pipe 130 is connected to the discharge port and the other side is exposed to the outside. Therefore, the fluid discharged from the pump unit 120 flows into the discharge pipe 130 and is discharged to the outside. The discharge pipe 130 is provided with the pump connection pipe 131 and the T natural coupling pipe 133.

The pump connection pipe 131 is connected to the discharge port of the pump unit 120.

The T natural connection pipe 133 is provided at a position spaced apart from the pump connection pipe 131. The T natural connection pipe 133 is connected to the circulation pipe 140. The T natural connection pipe 133 is connected to the circulation pipe 140 so that a part of the fluid flowing in the discharge pipe 130 flows to the circulation pipe 140.

The circulation pipe 140 is connected to the discharge pipe 130 at one side and to the pump unit 120 at the other side. The second fluid inlet pipe (150) is connected to the circulation pipe (140).

The second fluid inlet pipe (150) is a hollow body and is formed to introduce air. One end of the second fluid inlet pipe (150) is connected to the circulation pipe (140) and the other end is exposed to the atmosphere. The second fluid inlet pipe (150) is exposed to the atmosphere and air flows into the circulation pipe (140). One end of the second fluid inflow pipe 150 may be connected to the discharge pipe 130, the pump unit 120, or a first fluid inflow pipe (not shown).

Therefore, air flows into the water flowing in the circulation pipe (140) through the second fluid inlet pipe (150), and water and air are mixed. The mixed water and the air flow back to the pump unit 120 through the circulation pipe 140. When water and air are mixed and discharged from the pump unit 120, a part of the water flows to the pump unit 120 so that mixing between water and air is repeatedly performed. This process has a cyclic structure that is repeated, and thus the mixing of water and air is improved.

The circulation pipe 140 includes a valve 141 and a venturi 143.

The valve 141 is provided in the circulation pipe 150 to control the amount of fluid flow. The amount of water and air flowing into the circulation pipe 150 is controlled by adjusting the opening degree of the valve 141 so that the mixing ratio of water and air can be controlled. In addition, the discharge amount to the discharge pipe 130 can be adjusted.

The venturi portion 143 is formed at a position where the second fluid inlet pipe 150 is connected to the circulation pipe 140. Since the venturi portion 143 is formed in the pipe to which the second fluid inlet pipe 150 is connected, the venturi portion 143 may be formed in the discharge pipe 130.

The venturi portion 143 is formed so that the cross-sectional area of the flow passage decreases. The second fluid inlet pipe 130 is connected to a position where the inner diameter of the venturi portion 143 is the narrowest. The fluid passing through the venturi portion 143 passes through a narrow flow path, and the pressure rapidly increases. As the fluid passes through the narrow flow path, the pressure decreases and the flow velocity increases. A strong negative pressure is generated in a portion where the flow path cross-sectional area of the venturi portion 143 is increased. The generated negative pressure is sucked into the circulation pipe 140 through the second fluid inflow pipe 150 by the Venturi effect.

As shown in FIGS. 7 and 8, the filtering screw 160 is formed as a hollow body connecting the plurality of pipes of the discharge pipe. The fountain screw 160 is provided in the discharge pipe 130. The fountain screw 160 may be provided not only in the discharge pipe 130 but also in the second fluid inlet pipe 150, the circulation pipe 140 or the first fluid inlet pipe (not shown). The fountain screw 160 is composed of a screw 163 and a screw head 161.

The screw 163 is a hollow body and protrudes radially outwardly from the outer diameter to form a thread. Due to the screw 163, the tube is connected by screw tightening. And a screw head 161 is provided on one side of the screw 163.

The screw head 161 is connected to one side of the screw 163. The screw head 161 is hollow and its inner diameter is equal to the inner diameter of the screw 163. The screw head 161 has an outer diameter formed in the form of a hexagonal screw head. A screw thread is formed on the inner diameter of the screw head 161, and another pipe is connected by screw tightening. The screw head 161 facilitates assembly and separation of the tube and the manure screw 160, and is easy to clean.

And the screen 1611 and the rim 1631 are provided on the screening screw 161.

The net 1611 is provided between the screw 163 and the screw head 161. The mesh 1611 is provided inside the filtering screw 160 so that the foreign matter is filtered while the fluid passes through the filtering screw 1611. The net 1611 may be provided on the screw head 161. In this embodiment, the discharge pipe 130 is provided to remove foreign matter from the fluid flowing out through the discharge pipe 130.

The rim 1631 protrudes radially inward from the inner diameter of the filtering screw 160 and is formed into a curved shape. The rims 1631 are spaced apart in the circumferential direction and are provided in plural. The rim 1631 may be provided on the inner diameter of the screw 163. The rim 1631 improves the mixing of water and air and speeds up the flow rate.

Now, an operation example of a fluid mixed ejection apparatus according to an embodiment of the present invention will be described with reference to FIG. 3 attached hereto.

When the impeller portion 123 of the pump portion 120 rotates due to the motor portion 110, the water flows into the pump portion 120 through the inlet portion 1211 or the first fluid inlet pipe (not shown) Lt; / RTI > The water flowing into the inside is discharged from the pump unit 120 through the discharge port by the rotation of the impeller unit 123. The discharged water flows to the discharge pipe 130 connected to the discharge port.

A part of the water flowing into the discharge pipe 130 is discharged to the outside and the remaining part of the water flows into the circulation pipe 140 connected to the discharge pipe 130. When the water is discharged to the outside through the discharge pipe 130, the foreign matter passes through the filtering screw 160 and is discharged in a filtered state.

The water flowing in the circulation pipe 140 passes through the venturi part 143 formed at the connection part between the circulation pipe 140 and the second fluid inflow pipe 150 and sucks air by a venturi effect. Accordingly, air is introduced through the fluid inlet pipe 150 to mix water and air. The mixed water and the air flow back to the pump unit 120 through the circulation pipe 140.

The water and air flowing into the pump unit 120 are mixed with the water introduced from the pump unit 120 through the inlet 1211 or the first fluid inlet pipe. The mixed water and air are mixed with water and air by the rotation of the impeller part 123 and are discharged to the discharge port. When the water is discharged from the pump unit 120, the water flows through the mixed flow rate device 129 to improve the mixing of water and air and to flow more quickly.

A part of the water and air discharged to the discharge port is discharged through the discharge pipe 130 and the remaining part of the water is introduced into the circulation pipe 140 and the air is sucked into the second fluid inlet pipe 150, And the mixing of water and air is repeated in the pump unit 120. [ Such a circulation structure has improved mixing of water and air.

Although the fluid mixed ejection apparatus having the circulation structure according to the present invention has been described with reference to the embodiments shown in the drawings, it is merely an example, and various modifications and equivalents of other embodiments can be made by those skilled in the art I will understand the point. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: fluid mixed ejection apparatus having circulation structure
110: motor section 120: pump section
121: casing 123: impeller portion
129: mixed flow device 130: discharge pipe
140: Circulation tube 143: Venturi rib
150: second fluid inlet pipe 160:

Claims (11)

A motor unit 110 connected to the pump unit 120 for driving the pump unit 120, an inlet unit 1211 through which the first fluid flows and a pump unit 120 through which the outlet port is discharged to one side, A discharge pipe 130 connected to the discharge port and serving as a passage through which the fluid discharged from the pump unit 120 is discharged to the outside and a discharge pipe 130 connected to the discharge pipe 130 and the other end connected to the inlet of the pump unit 120 And a second fluid inlet pipe (150) having a circulation pipe (140) and a second fluid inlet pipe (150) having one side connected to the circulation pipe (140) and a second fluid inlet. The fluid mixing discharge device according to claim 1, wherein one side of the second fluid inflow pipe (150) is connected to the discharge pipe (130) between the discharge port and a part where the circulation pipe (140) Device. A motor unit 110 connected to the pump unit 120 to drive the pump unit 120, a pump unit 120 having a discharge port through which the first fluid flows and is discharged to one side, A discharge pipe 130 connected to the discharge port and serving as a passage through which the fluid discharged from the pump unit 120 is discharged to the outside, A circulation pipe 140 connected to the discharge pipe 130 and connected to the first fluid inflow pipe on the other side and a second fluid inflow pipe 140 connected to the circulation pipe 140 and serving as a passage through which the second fluid flows 150). ≪ / RTI > The fluid mixing discharge device according to claim 3, wherein one side of the second fluid inflow pipe (150) is connected to the discharge pipe (130) between the discharge port and a part where the circulation pipe (140) Device. 4. The fluid mixed ejection apparatus according to claim 3, wherein one side of the second fluid inflow pipe (150) is connected to the first fluid inflow pipe. The circulation pipe (140) according to any one of claims 1 to 7, wherein the circulation pipe (140) is provided with a venturi part (143) and the second fluid inflow pipe (150) And the fluid mixing / discharging device has a circulation structure. 5. The apparatus according to claim 2 or 4, wherein the discharge pipe (130) is provided with a venturi part (143) and the second fluid inlet pipe (150) is connected to the discharge pipe (130) Wherein the fluid mixture ejecting apparatus has a circulation structure. The fluid inlet pipe according to claim 5, wherein the first fluid inlet pipe is provided with a venturi portion (143), and the second fluid inlet pipe (150) is connected to the first fluid inlet pipe Wherein the fluid mixing device has a circulation structure. The pump according to any one of claims 1 to 5, wherein the pump unit (120) comprises: a hollow casing (121) having an inlet (1211) through which the first fluid flows and an outlet through which the first fluid is discharged; An impeller portion 123 rotatably provided in the casing 121 and a mixed flow rate device 129 coupled to the casing 121;
The mixed flow rate device 129 includes a fixed plate 1291 installed to be coupled with the casing 121 and a plurality of protrusions 1293 extending and protruding from the fixed plate 1291 to the fixed plate 1291 Fluid mixed ejection apparatus with circulation structure. 10. The apparatus of claim 9, wherein the discharge pipe (130) comprises a plurality of pipes, the plurality of pipes being connected by a filter (160);
Wherein a mesh (1611) is provided on the inside of the fountain screw (160), and a fluid flowing through the discharge pipe (130) is discharged through the discharge pipe (130). The fluid mixed ejection apparatus according to claim 10, wherein a plurality of rod-shaped rims (1631) protruding radially inwardly from the inner diameter of the fountain screw (160) are provided.

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