KR101777655B1 - Microbubble generating nozzle corresponding to variable flow rate - Google Patents

Microbubble generating nozzle corresponding to variable flow rate Download PDF

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Publication number
KR101777655B1
KR101777655B1 KR1020150160238A KR20150160238A KR101777655B1 KR 101777655 B1 KR101777655 B1 KR 101777655B1 KR 1020150160238 A KR1020150160238 A KR 1020150160238A KR 20150160238 A KR20150160238 A KR 20150160238A KR 101777655 B1 KR101777655 B1 KR 101777655B1
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South Korea
Prior art keywords
nozzle
nozzle hole
fluid
plate
hole
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KR1020150160238A
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Korean (ko)
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KR20170056874A (en
Inventor
최동찬
이대성
박민구
장은수
윤여복
신현철
박경욱
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금호산업주식회사
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    • B01F3/04—
    • B01F3/04099—
    • B01F3/04829—
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • B01F2003/04872—
    • B01F2215/0052—

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nozzles (AREA)

Abstract

The present invention relates to a micro-bubble generating nozzle capable of increasing a width between a minimum storage flow rate and a maximum storage flow volume in response to a flow rate change, and capable of automatically regulating a circulation flow rate, , The micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the present invention comprises: a nozzle barrel providing a space for generating minute bubbles; A nozzle plate provided at an upper end of the nozzle tube and having a nozzle hole into which fluid flows; A collision plate disposed in the nozzle cylinder and spaced apart from the nozzle hole, the collision plate colliding with the fluid introduced through the nozzle hole; A spring member that supports the impingement plate and is compressed or restored according to the force of the fluid applied to the impingement plate; And a conical nozzle hole area variable member provided on the upper surface of the impingement plate and passing through the nozzle hole. When the spring member is compressed, the flow passage area of the nozzle hole increases, When the spring member is restored, the flow passage area of the nozzle hole is reduced, and the impingement plate is in the form of a dome protruding toward the inside of the nozzle barrel.

Description

[0001] The present invention relates to a microbubble generating nozzle capable of automatically controlling a circulating flow rate,

The present invention relates to a micro-bubble generating nozzle capable of automatically controlling a circulation flow rate, and more particularly, to a micro-bubble generating nozzle capable of increasing the width between a minimum storage flow rate and a maximum storage flow rate in response to a flow rate change, The present invention relates to a micro-bubble generating nozzle capable of automatically regulating a circulating flow rate.

The flotation separation process, which is one of the water treatment processes, is applied to various water treatment fields as a method of removing contaminants by attaching contaminants to microbubbles through the floating force of bubbles (Korean Patent Publication No. 869312). In the sewage treatment sector, the float separation process is applied to separate and concentrate the sludge. In the water treatment field, the float separation process is applied to float and remove common floating materials and difficult to sediment.

The microbubbles used in the flotation separation process are generated by the microbubble generator and injected into the flotation separation tank. The performance of the microbubble generator depends on whether small-size microbubbles are generated and the amount of microbubbles produced. Korean Patent No. 10-551983 discloses a technique capable of colliding an air jet to generate a large amount of minute bubbles. Further, Korean Patent Registration No. 10-1144705 discloses a technique for causing a fluid to collide with a collision member to generate minute bubbles.

On the other hand, in the water treatment process such as the float separation process, the inflow amount of the raw water varies depending on the situation, and all devices constituting the water treatment process are designed to correspond to the maximum treatment capacity. For example, if the microbubble generator has a daily maximum processing capacity of 10,000 tons and requires a maximum of 100,000 tons of water treatment per day, ten microbubbles are required. However, in most cases, the water treatment apparatus is operated under the condition of the maximum water treatment capacity, and the facilities that are idle are left there, which causes the operation efficiency to deteriorate.

In addition, even when the influent water quality such as suspended substances and algae changes, it is necessary to operate the amount of microbubbles to be varied according to the influent water quality. However, since the micro-bubble generating device has a fixed flow rate, it is difficult to organically cope with the change of the influent water quality, which causes the micro bubble generation amount to be unnecessarily generated, thereby increasing the operating cost.

Such a problem is caused by the fact that the conventional micro-bubble generating device has a small response width in response to a change in flow rate. That is, since the width between the minimum treatment flow rate and the maximum treatment flow rate of the microbubble generator is small, the microbubble generator must be installed in proportion to the amount of water treatment required.

In the collision type micro bubble generator disclosed in Korean Patent No. 10-1144705, as the collision member is in a fixed state, and the distance between the inflow end and the collision member is always constant, when the flow rate of the fluid increases or decreases, There is a structural limitation that bubble generation efficiency may be lowered or micro bubbles may not be generated.

Korean Patent Registration No. 869312 Korean Patent No. 10-551983 Korean Patent No. 10-1144705

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to increase the width between the minimum accommodating flow rate and the maximum accommodating flow rate by varying the size of the nozzle hole and the distance between the nozzle hole and the impingement plate, It is an object of the present invention to provide a fine bubble generating nozzle capable of automatically regulating a circulation flow rate which can uniformly generate minute bubbles regardless of a change in flow rate.

Further, according to the present invention, it is possible to control the area of the nozzle hole exposed in response to the flow rate change, or to control the number of the nozzle holes to be exposed, thereby automatically controlling the circulation flow rate to generate minute bubbles regardless of the flow rate variation Another object is to provide a fine bubble generating nozzle.

According to an aspect of the present invention, there is provided a micro-bubble generating nozzle capable of automatically controlling a circulation flow rate, the micro-bubble generating nozzle comprising: A nozzle plate provided at an upper end of the nozzle tube and having a nozzle hole into which fluid flows; A collision plate disposed in the nozzle cylinder and spaced apart from the nozzle hole, the collision plate colliding with the fluid introduced through the nozzle hole; A spring member that supports the impingement plate and is compressed or restored according to the force of the fluid applied to the impingement plate; And a conical nozzle hole area variable member provided on the upper surface of the impingement plate and passing through the nozzle hole. When the spring member is compressed, the flow passage area of the nozzle hole increases, When the spring member is restored, the flow passage area of the nozzle hole is reduced, and the impingement plate is in the form of a dome protruding toward the inside of the nozzle barrel.

An edge collision member is provided along the rim of the impingement plate and additional microbubble generation is induced through collision of the fluid and the edge collision member.

In the case where the flow passage area of the nozzle hole and the distance between the impingement plate and the nozzle hole are set to the reference value so that the minute bubbles can be generated corresponding to the minimum inflow flow rate, the flow passage area of the nozzle hole, The distance between the nozzle holes is increased beyond the reference value and the flow passage area of the nozzle hole and the distance between the impingement plate and the nozzle hole are reduced to approach the reference value when the inflow flow rate is decreased.

The spring member is fixed and supported on the impingement plate support member. The impingement plate guide member may be provided on the side of the spring member and the impingement plate to prevent the impingement plate from being disengaged when the impingement plate moves back and forth.

A guide hole may be provided in the collision plate and an impingement plate guide member may be provided to penetrate the guide hole to prevent the collision plate from being separated when the collision plate is moved back and forth.

Further, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the present invention comprises a nozzle chamber for providing a space for generating micro-bubbles; A slit-shaped nozzle hole provided on a sidewall of the nozzle chamber; A nozzle hole area adjusting member provided inside the nozzle chamber and moved back and forth by a force of an applied fluid to adjust an exposed area of the nozzle hole; A nozzle hole spring member that supports the nozzle hole area adjusting member and is compressed or restored according to the force of the fluid applied to the nozzle hole area adjusting member; An impingement plate provided at a position spaced apart from an outer surface of the nozzle chamber, the impinging plate colliding with the fluid ejected through the nozzle hole; And a collision spring member supporting the collision plate and being compressed or restored according to a force of the fluid applied to the collision plate.

The impingement plate is supported by a collision spring member, and the collision spring member can be fixed and supported by a fixing pin provided on an outer surface of the nozzle chamber.

In addition, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the present invention includes a nozzle chamber for providing a space for generating micro-bubbles; A plurality of nozzle holes spaced apart from each other on a side wall of the nozzle chamber; A nozzle hole number adjusting member provided inside the nozzle chamber and moved back and forth by a force of an applied fluid to adjust an exposed area of the nozzle hole; A nozzle hole spring member which supports the nozzle hole number adjusting member and is compressed or restored according to the force of the fluid applied to the nozzle hole area adjusting member; And an impingement plate provided at a position spaced apart from the outer surface of the nozzle chamber and in which the fluid ejected through the nozzle hole collides with the impingement plate.

A plurality of nozzle holes forming a first row on the sidewall of the nozzle chamber, a plurality of nozzle holes forming a second row on the side walls of the opposing nozzle chambers, nozzle holes of the first row at the same positions opposed to each other, The nozzle holes of the second row may be disposed or the nozzle holes of the second row may be disposed between the nozzle holes of the first row.

The micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the present invention has the following effects.

It is possible to generate a certain amount of minute bubbles regardless of the change in the flow rate even if the inflow flow rate is changed. Accordingly, the amount of minute bubbles can be changed in proportion to the flow rate change.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fine bubble generating nozzle capable of automatic circulation flow control according to a first embodiment of the present invention; FIG.
2 is a sectional view of a micro-bubble generating nozzle capable of automatic circulation flow control according to a first embodiment of the present invention;
FIG. 3A and FIG. 3B are reference views showing a change in flow passage area due to the movement of the variable jet member.
Figs. 4 and 5 are reference views showing a modified embodiment of the impingement plate guide member. Fig.
6 and 7 are sectional views of a micro-bubble generating nozzle capable of automatic circulation flow control according to another embodiment of the present invention.
8 is a sectional view of a micro-bubble generating nozzle capable of automatic circulation flow control according to a second embodiment of the present invention;
9 is a reference view for explaining the operation of the fine bubble generating nozzle capable of automatically controlling the circulation flow rate according to the second embodiment of the present invention.
10 is a sectional view of a micro-bubble generating nozzle capable of automatically controlling a circulation flow rate according to a second embodiment of the present invention;
11 is a reference view for explaining the operation of the fine bubble generating nozzle capable of automatically controlling the circulation flow rate according to the second embodiment of the present invention.

The present invention provides a technique capable of constantly generating minute bubbles regardless of a change in flow rate.

When the flow rate exceeding the designed flow rate of the fine bubble generating nozzle is introduced, the flow rate of the fluid passing through the nozzle hole is increased In contrast, if the flow rate is smaller than the designed flow rate, the fluid velocity may decrease and the size of the fine bubbles may not be increased or generated. When the velocity of the fluid increases and the size of the minute bubbles becomes small, there is a problem that the flow rate and the operating pressure are unnecessarily consumed.

Accordingly, in the present invention, when the flow rate of the fluid increases and the velocity of the fluid increases, the size of the nozzle hole increases and the distance between the nozzle hole and the impingement plate is increased. When the flow rate of the fluid decreases, The size of the hole is reduced and the distance between the nozzle hole and the impingement plate is brought close to each other so that the velocity of the fluid passing through the nozzle hole is always kept constant so that uniform bubble can be generated irrespective of the flow rate variation (First embodiment) of a micro-bubble generating nozzle capable of automatically controlling a circulation flow rate.

In addition, according to another embodiment of the present invention, it is possible to control the area of the exposed nozzle holes or to adjust the number of exposed nozzle holes to automatically regulate the circulation flow rate to generate fine bubbles regardless of the flow rate variation The structure of the fine bubble generating nozzle (the second embodiment and the third embodiment) is presented.

Hereinafter, a micro-bubble generating nozzle capable of automatically controlling a circulation flow rate according to an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 1 and 2, a micro-bubble generating nozzle 100 capable of automatically controlling a circulation flow rate according to the first embodiment of the present invention includes a nozzle cylinder 110. The nozzle cylinder 110 provides a space in which 'the fluid in which the air is dissolved' is converted into the 'fluid containing the minute bubbles'. The upper end of the nozzle tube 110 is connected to the fluid pipe 10 to receive the 'air-dissolved fluid' of the fluid pipe 10 through the nozzle hole 121 of the nozzle plate 120, 110 are discharged through the opening 111 at the lower end of the nozzle cylinder 110. [ The nozzle cylinder 110 may have a cylindrical shape or may extend toward the fluid discharge port as shown in FIG. The discharge efficiency and the diffusion efficiency of the fluid containing fine bubbles generated in the nozzle cylinder 110 to the outside of the nozzle can be increased when the cross section is formed in a trapezoidal shape extending toward the fluid discharge port side.

A nozzle plate 120 having a nozzle hole 121 is formed at an upper end of the nozzle barrel 110 and the fluid of the fluid pipe 10 flows through the nozzle hole 121. The diameter of the nozzle hole 121 may be smaller than the diameter of the fluid pipe 10 and may be increased toward the inside of the nozzle case 110 to increase the fluid inflow rate and diffusion effect. 3, the nozzle plate 120 forms a dome protruding toward the inside of the nozzle cylinder 110 to guide the flow of the fluid toward the center of the nozzle cavity 121 . A streamlined fluid guide groove 122 may be provided on the surface of the nozzle plate 120 in contact with the fluid to accelerate fluid movement to the nozzle hole 121 and to induce a swirl flow, The grooves 122 are repeatedly arranged on the surface of the nozzle plate 120 at a predetermined interval.

An impact plate 130 is provided at a position spaced apart from the nozzle hole 121 by a predetermined distance. The 'air-dissolved fluid' flowing through the nozzle hole 121 collides with the impingement plate 130 and is converted into a 'fluid containing minute bubbles'. That is, as the fluid collides with the impingement plate 130, fine bubbles are generated.

In order to improve the efficiency of generating fine bubbles, the force of the fluid passing through the nozzle hole 121 at the time of collision with the impact plate 130 must be maximized. For this purpose, a right angle collision between the fluid and the impact plate 130 must be induced . The impingement plate 130 is configured in a dome-like configuration similar to the nozzle plate 120 in order to induce a perpendicular collision of the impingement plate 130 with the fluid. As the impingement plate 130 is configured in a dome shape, the possibility that the fluid that has passed through the nozzle hole 121 collides with the impingement plate 130 in a perpendicular direction increases. As a modified example, the frame collision member 131 provided along the rim of the collision plate 130 may be provided, and additional micro-bubble generation may be induced through collision of the fluid and the frame collision member 131.

The impact plate 130 is supported by a spring member 140 and the spring member 140 is fixed and supported on the impact plate support member 150. In addition, an impingement plate guide member 160 is provided on the side of the spring member 140 and the impingement plate 130. When the impact plate 130 is pressurized or relaxed in a state where the impact plate 130 is fixed on the spring member 140 and the spring member 140 is provided on the impact plate support member 150, The collision plate 130 can be moved back and forth by the resilience and elastic restoring force of the spring member 140 and the collision plate guide member 160 is provided on the side of the spring member 140 and the collision plate 130 The collision plate 130 is prevented from being disengaged when the collision plate 130 is moved back and forth. One end of the collision plate guide member 160 is fixed to the collision plate support member 150 and the other end of the collision plate guide member 160 is bent on the collision plate 130, To the upper portion.

Further, it is preferable that the impingement plate support member 150 is provided with the opening hole 151 through which the fluid can flow in order to minimize the influence of the fluid on the compression and decompression of the spring member 140 and to prevent the accumulation of foreign matter Do.

A conical nozzle cavity area variable member 180 is provided on the upper surface of the impingement plate 130 and the upper end of the nozzle cavity area variable member 180 passes through the nozzle hole 121 and is located inside the fluid pipe 10 As shown in FIG. The area obtained by subtracting the cross sectional area of the nozzle cavity area variable member 180 from the area of the nozzle hole 121 becomes the flow passage area through which the actual fluid passes through the nozzle hole 121. [

As the nozzle cavity area variable member 180 forms a conical shape, the cross-sectional area of the nozzle cavity area variable member 180 becomes smaller toward the upper end. When the spring member 140 is compressed, the nozzle cavity area variable member 180 When the spring member 140 is restored, the upper end portion of the nozzle cavity area changeable member 180 is moved to the upper side of the nozzle hole 121 And is positioned in the fluid pipe 10, so that the flow passage area of the nozzle hole 121 is reduced (see FIG. 3B). That is, when the flow rate increases and the spring member 140 is compressed, the flow passage area is increased to keep the velocity of the fluid passing through the nozzle hole 121 constant, and by the compression of the spring member 140, And the nozzle hole 121 is increased to increase the allowable flow rate.

The size of the nozzle hole 121, that is, the flow passage area is set on the basis of a flow rate required for generating minute bubbles in the minimum inflow flow rate. Similarly, the distance between the impingement plate 130 and the nozzle hole 121 is set to a minimum inflow flow rate The generation of minute bubbles is set to a distance that is possible. That is, the flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are adjusted so that normal microbubbles can be generated when the flow rate through the nozzle hole 121 is minimum Respectively. Here, a normal microfuge means microbubbles having a size within a specific range. Since the flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are designed to correspond to the minimum flow rate, the flow rate supplied to the nozzle hole 121 through the fluid pipe 10 It is possible to efficiently produce fine bubbles of a predetermined size.

Through the nozzle hole 121 of the fluid pipe 10 in a state in which the flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are set as reference values corresponding to the minimum inflow flow rate When the flow rate is increased, the velocity of the fluid passing through the nozzle hole 121 is increased by the increase of the flow rate, and the force of the fluid applied to the nozzle hole 121 and the impingement plate 130 is increased . If the inflow flow rate is increased in a state in which the flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are fixed, the nozzle hole 121 and the impingement plate 130 As the force and flow rate of the applied fluid increases, the size and amount of microbubbles change.

Assuming that the velocity of the fluid passing through the nozzle hole 121 when the fluid collides with the impingement plate 130 in the reference value state and normal microbubbles are generated is referred to as a reference velocity, In the case of the bubble generating nozzle 100, when the flow rate of the fluid supplied through the fluid pipe is increased and the velocity of the fluid passing through the nozzle hole becomes larger than the reference velocity, the flow passage area of the nozzle hole 121, The distance between the holes 121 is increased beyond the reference value so that the velocity of the fluid passing through the nozzle hole is close to the reference value and the water flow rate is increased (see FIG. 3A). On the contrary, The flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are reduced to approach the reference value (see FIG. 3B). That is, the flow passage area of the nozzle hole 121 and the distance between the impingement plate 130 and the nozzle hole 121 are variable according to the flow rate change, and the flow passage area of the nozzle hole 121 is variable, The distance between the impingement plate 130 and the nozzle hole 121 is variable by the spring member 140 supporting the impingement plate 130 . The micro bubbles of a constant size can be continuously made even if the flow rate is varied by varying the flow passage area of the nozzle hole 121 and varying the distance between the impingement plate 130 and the nozzle hole 121. However, when the flow rate is small, the amount of microbubbles to be produced is decreased, and when the flow rate is large, the amount of microbubbles to be produced is increased.

It is noted that the impact plate guide member 160 is provided on the side of the spring member 140 and the impact plate 130 in the above description. The impact plate guide member 160 penetrates the impact plate 130 As shown in FIG. That is, a guide hole 131 may be provided in the collision plate 130, and an impingement plate guide member 160 may be provided to penetrate the guide hole (see FIG. 4). It is also possible to fix the impingement plate guide member 160 to the nozzle plate 120 instead of the impingement plate support member 150 (see FIG. 5).

In another embodiment of the present invention, it is also possible to maximize the opening 111 at the lower end of the nozzle cylinder 110 and simplify the operation structure of the impingement plate 120. 6 and 7, one end of the collision plate guide member passing through the collision plate is fixed to the inner wall of the nozzle plate via the fixing pin, so that the collision plate support member as shown in FIG. 1 is not required, It is possible to maximize the opening of the lower end portion, thereby increasing the discharge efficiency and diffusion efficiency of the fluid containing the minute bubbles to the outside of the nozzle. A spring member is provided on the back surface of the collision plate guide member, and a spring fixing member is provided at the other end of the collision plate guide member to prevent the spring member from being separated.

The fine bubble generating nozzle capable of automatically controlling the circulation flow rate according to the first embodiment of the present invention has been described above. Next, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the second and third embodiments of the present invention will be described.

Referring to FIG. 8, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the second embodiment of the present invention includes a nozzle chamber 210. One side of the nozzle chamber 210 is connected to the fluid pipe 10 and the 'air-dissolved fluid' supplied from the fluid pipe 10 flows through the nozzle chamber 210 and the collision plate 230 It is converted into a " fluid containing minute bubbles ".

The nozzle chamber 210 may have a cylindrical shape and a slit-shaped nozzle hole 211 may be formed on a sidewall of the nozzle chamber 210 to discharge the fluid inside the nozzle chamber 210 to the outside . In addition, a nozzle hole area adjusting member 220 is provided in the nozzle chamber 210. The nozzle hole area adjusting member 220 serves to adjust the exposed area of the nozzle hole 211. The nozzle hole area adjusting member 220 adjusts the area of the nozzle hole 211 by adjusting the force of the fluid applied to the nozzle hole area adjusting member 220, The exposed area of the nozzle hole 211 is determined by the operation of the spring member 221. [ A nozzle hole area regulating member 220 concentrically formed with the nozzle chamber 210 is provided in the nozzle chamber 210 and the nozzle chamber 210 is provided at one end of the nozzle hole area regulating member 220. [ And a nozzle hole spring member 221 fixed to one side of the nozzle hole spring member 221 is connected.

In the case where no external force is applied, the nozzle hole area adjusting member 220 is provided in a shape in which the nozzle holes 211 are all masked. When an external force is applied, The nozzle hole area adjusting member 220 is moved inward in the nozzle chamber 210 to expose the nozzle hole 211 (see FIG. 9). The exposed area of the nozzle hole 211 exposed by the nozzle hole area adjusting member 220 is proportional to the force of the fluid applied to the nozzle hole area adjusting member 220. As the flow rate of the fluid supplied to the nozzle chamber 210 increases, the exposed area of the nozzle hole 211 increases due to the increase of the fluid velocity, and the flow rate of the fluid, which is ejected to the outside of the nozzle chamber 210 through the nozzle hole 211 Also increased.

An impingement plate 230 is provided on the outer side of the nozzle chamber 210.

The impingement plate 230 is provided at a position spaced from the outer surface of the nozzle chamber 210 by a predetermined distance and the fluid ejected through the nozzle hole 211 collides with the impingement plate 230. The 'air-dissolved fluid' ejected through the nozzle hole 211 is converted into a 'fluid containing minute bubbles' by collision with the impact plate 230. The conversion of the 'air-dissolved fluid' into the 'microbubble-containing fluid' may be partially caused by the collision of the fluid with the nozzle-hole area adjusting member 220. That is, by the collision between the fluid in the nozzle chamber 210 and the nozzle orifice area adjusting member 220, the first conversion of the 'air-dissolved fluid' into the 'fluid containing the minute bubbles' occurs, The fluid ejected through the second impingement plate 211 collides with the impingement plate 230, resulting in a second conversion of the 'air-dissolved fluid' to the 'fluid containing minute bubbles'.

The impingement plate 230 is supported by a collision spring member 231 and the collision spring member 231 is fixed and supported by a fixing pin 232 provided on the outer surface of the nozzle chamber 210 . In this state, when the fluid ejected through the nozzle hole 211 collides with the impact plate 230, the impact plate 230 can be moved back and forth by the resilience and elastic restoring force of the impact spring member 231 . The degree of depression of the collision spring member 231 is proportional to the force of the fluid applied to the impingement plate 230, like the nozzle hole spring member 221 of the nozzle hole area regulating member 220.

Under such a structure, when the flow rate of the fluid supplied into the nozzle chamber 210 increases, the exposed area of the nozzle hole 211 is increased to keep the velocity of the fluid passing through the nozzle hole 211 constant, The distance between the hole 211 and the impingement plate 230 is increased to increase the allowable flow rate.

The fine bubble generating nozzle capable of automatically controlling the circulation flow rate according to the second embodiment of the present invention has been described above. Next, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the third embodiment of the present invention will be described.

The micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the third embodiment of the present invention controls the number of exposed bores according to the force of the fluid. That is, while the second embodiment of the present invention controls the exposure area of the nozzle hole 311 according to the force of the fluid, the third embodiment of the present invention has a structure in which the nozzle hole 310 is spaced apart from the outer surface of the nozzle chamber 310 The number of the nozzle holes 311 exposed according to the force of the fluid is adjusted in a state where the plurality of nozzle holes 311 are arranged.

Referring to FIG. 10, the micro-bubble generating nozzle capable of automatically controlling the circulation flow rate according to the third embodiment of the present invention includes a nozzle chamber 310 as in the second embodiment. One side of the nozzle chamber 310 is connected to the fluid pipe 10 and the 'air-dissolved fluid' supplied from the fluid pipe 10 is connected to the nozzle chamber 310 To " fluid containing minute bubbles ".

A plurality of nozzle holes 311 are spaced apart from each other along the longitudinal direction of the nozzle chamber 310 on the side walls of the nozzle chamber 310. In addition, a plurality of nozzle holes 311 may be spaced apart from the opposing sidewalls of the side walls on which the plurality of nozzle holes 311 are disposed. In this manner, a plurality of nozzle holes 311 of the first row and a plurality The nozzle holes 311 of the first row and the nozzle holes 311 of the second row may be arranged at the same positions opposite to each other or may be arranged between the nozzle holes 311 of the first row The nozzle holes 311 in the second row can be arranged.

A nozzle hole number adjusting member 320 is provided in the nozzle chamber 310. The nozzle hole number adjusting member 320 adjusts the number of the nozzle holes 311 to be exposed. The nozzle hole adjusting member 320 includes a nozzle hole adjusting member 320, a nozzle hole adjusting member 320, The number of nozzle holes 311 exposed by the operation of the spring member 321 is determined. A nozzle hole number adjusting member 320 concentrically formed with the nozzle chamber 310 is provided in the nozzle chamber 310 and the nozzle hole 310 is formed at one end of the nozzle hole number adjusting member 320 And a nozzle hole spring member 321 fixed to one side of the nozzle hole spring member 321 is connected.

When external force is not applied, the nozzle hole number adjusting member 320 is provided in the shape of a blank of all the nozzle holes 311. When an external force is applied, the force of the fluid is applied to the nozzle hole number adjusting member 320, The nozzle hole number adjusting member 320 is moved toward the inside of the nozzle chamber 310 to expose the nozzle hole 311 (FIG. 11). The exposed number of the nozzle holes 311 exposed by the nozzle hole number adjusting member 320 is proportional to the force of the fluid applied to the nozzle hole number adjusting member 320. Also, as the flow rate of the fluid supplied to the nozzle chamber 310 increases, the number of exposures of the nozzle holes 311 increases due to an increase in the fluid velocity, and the number of exposed nozzle holes 311 increases, To the outside of the nozzle chamber 310 is also increased.

An impact plate 330 is provided outside the nozzle chamber 310.

The impingement plate 330 is provided at a position spaced from the outer surface of the nozzle chamber 310 by a predetermined distance, and the fluid ejected through the nozzle hole 311 collides with the impingement plate 330. The 'air-dissolved fluid' ejected through the nozzle hole 311 is converted into a 'fluid containing minute bubbles' by collision with the impact plate 330. The conversion of the 'air-dissolved fluid' to the 'microbubble-containing fluid' may be partially caused by the collision between the fluid and the nozzle hole number adjusting member 320. That is, a primary transition of the 'air-dissolved fluid' into the 'fluid containing minute bubbles' is caused by the collision between the fluid and the nozzle hole number adjusting member 320 in the nozzle chamber 310, The fluid ejected through the first impeller 311 collides with the impingement plate 330, resulting in a second conversion of the 'air-dissolved fluid' into 'the fluid containing the minute bubbles'.

The impact plate 330 is supported by a collision spring member (not shown) similar to the second embodiment, and the collision spring member is fixed by a fixing pin provided on the outer surface of the nozzle chamber 310, . In this state, when the fluid ejected through the nozzle hole 311 impinges on the impingement plate 330, the impingement plate 330 can be moved back and forth by the resilient and elastic restoring force of the impingement spring member. The degree of depression of the collision spring member is proportional to the force of the fluid applied to the collision plate 330, like the nozzle hole spring member 321 of the nozzle hole number regulating member 320. At this time, the configuration of the collision spring member may be omitted, and only the impingement plate 330 may be fixed to the nozzle chamber 310 through the fixing pin.

Under such a structure, when the flow rate of the fluid supplied into the nozzle chamber 310 increases, the number of exposures of the nozzle holes 311 is increased, so that the velocity of the fluid passing through the nozzle holes 311 can be kept constant , Whereby microbubbles of a predetermined size can be generated.

10: Fluid piping 100: Micro-bubble generating nozzle capable of automatic circulation flow control
110: nozzle cylinder 111: opening
120: nozzle plate 121: nozzle hole
122: fluid guide groove 130: collision plate
140: spring member 150: impact plate support member
151: opening hole 160: impingement plate guide member
170: Fixing member 180: Spouting hole area variable member
210: nozzle chamber 211: nozzle hole
220: nozzle hole area adjusting member 221: nozzle hole spring member
230: Collision plate 231: Collision spring member
232: Fixing pin
320: nozzle hole number adjusting member 321: nozzle hole spring member
330: collision plate

Claims (9)

A nozzle cylinder for providing space for generating minute bubbles;
A nozzle plate provided at an upper end of the nozzle tube and having a nozzle hole through which fluid flows;
A collision plate disposed in the nozzle cylinder and spaced apart from the nozzle hole, the collision plate colliding with the fluid introduced through the nozzle hole;
A spring member that supports the impingement plate and is compressed or restored according to the force of the fluid applied to the impingement plate; And
And a conical nozzle-hole area variable member provided on the upper surface of the impingement plate and passing through the nozzle hole,
When the spring member is compressed, the flow passage area of the nozzle hole increases, and when the spring member is restored, the flow passage area of the nozzle hole decreases,
The impingement plate is in the form of a dome protruding toward the inside of the nozzle barrel,
Characterized in that an edge impingement member is provided along the rim of the impingement plate and additional micro-bubble formation is induced through collision of the fluid and the impinging member on the micro-bubble generating nozzle. delete The method as claimed in claim 1, wherein, in a state in which a flow passage area of the nozzle hole and a distance between the impingement plate and the nozzle hole are set to a reference value so that microbubbles can be generated corresponding to the minimum inflow rate,
As the inflow flow increases, the flow passage area of the nozzle hole and the distance between the impingement plate and the nozzle hole increase from the reference value. When the inflow flow decreases, the flow passage area of the nozzle hole and the distance between the impingement plate and the nozzle hole approach And the flow rate of the gas is reduced as much as possible. 2. The image forming apparatus according to claim 1, wherein the spring member is fixed and supported on the impingement plate support member,
Wherein a collision plate guide member is provided at the side of the spring member and the collision plate to prevent the collision plate from being disengaged when the collision plate is moved back and forth. 2. The automatic flow control apparatus according to claim 1, wherein a guide hole is provided in the collision plate, and an impingement plate guide member for preventing the collision plate from separating from the collision plate when the collision plate is moved back and forth is provided through the guide hole. A possible micro-bubble generating nozzle. A nozzle chamber for providing space for generating fine bubbles;
A slit-shaped nozzle hole provided on a sidewall of the nozzle chamber;
A nozzle hole area adjusting member provided inside the nozzle chamber and moved back and forth by a force of an applied fluid to adjust an exposed area of the nozzle hole;
A nozzle hole spring member that supports the nozzle hole area adjusting member and is compressed or restored according to the force of the fluid applied to the nozzle hole area adjusting member;
An impingement plate provided at a position spaced apart from an outer surface of the nozzle chamber, the impinging plate colliding with the fluid ejected through the nozzle hole; And
And a collision spring member that supports the collision plate and is compressed or restored according to the force of the fluid applied to the collision plate. 7. The apparatus according to claim 6, wherein the impingement plate is supported by a collision spring member, and the collision spring member is fixed and supported by a fixing pin provided on an outer surface of the nozzle chamber. Bubble generating nozzle. A nozzle chamber for providing space for generating fine bubbles;
A plurality of nozzle holes spaced apart from each other on a side wall of the nozzle chamber;
A nozzle hole number adjusting member provided inside the nozzle chamber and moved back and forth by a force of an applied fluid to adjust an exposed area of the nozzle hole;
A nozzle hole spring member that supports the nozzle hole number adjusting member and is compressed or restored according to the force of the fluid applied to the nozzle hole area adjusting member; And
And a collision plate disposed at a position spaced apart from the outer surface of the nozzle chamber and colliding with the fluid ejected through the nozzle hole. The ink jet recording apparatus according to claim 8, further comprising a plurality of nozzle holes forming a first row on a side wall of the nozzle chamber, a plurality of nozzle holes forming a second row on side walls of the opposing nozzle chambers,
Characterized in that the nozzle holes of the first row and the nozzle holes of the second row are arranged at the same positions facing each other or the nozzle holes of the second row are arranged between the nozzle holes of the first row. Generating nozzle.
KR1020150160238A 2015-11-16 2015-11-16 Microbubble generating nozzle corresponding to variable flow rate KR101777655B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102208338B1 (en) * 2020-04-07 2021-01-26 주식회사 대양상사 A Micro-buble generating nozzle

Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2008290014A (en) * 2007-05-25 2008-12-04 Yamaha Motor Co Ltd Bubble generator and bubble generation apparatus
JP2011156526A (en) * 2010-01-29 2011-08-18 Fuji Techno Industries Corp Nanobubble generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008290014A (en) * 2007-05-25 2008-12-04 Yamaha Motor Co Ltd Bubble generator and bubble generation apparatus
JP2011156526A (en) * 2010-01-29 2011-08-18 Fuji Techno Industries Corp Nanobubble generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102208338B1 (en) * 2020-04-07 2021-01-26 주식회사 대양상사 A Micro-buble generating nozzle

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