KR101670077B1 - a sludge removal apparatus of pump using a bubble jet - Google Patents

a sludge removal apparatus of pump using a bubble jet Download PDF

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Publication number
KR101670077B1
KR101670077B1 KR1020160046313A KR20160046313A KR101670077B1 KR 101670077 B1 KR101670077 B1 KR 101670077B1 KR 1020160046313 A KR1020160046313 A KR 1020160046313A KR 20160046313 A KR20160046313 A KR 20160046313A KR 101670077 B1 KR101670077 B1 KR 101670077B1
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KR
South Korea
Prior art keywords
fresh water
pipe
supply pipe
outside air
water supply
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Application number
KR1020160046313A
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Korean (ko)
Inventor
염권정
Original Assignee
(주)대한중전기
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Priority to KR1020160046313A priority Critical patent/KR101670077B1/en
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Publication of KR101670077B1 publication Critical patent/KR101670077B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a sludge removing apparatus of a pump. According to an embodiment of the present invention, a sludge removing apparatus of a pump using a bubble jet comprises an outdoor air supply pipe, an outdoor air discharge pipe, an air blowing fan, a clear water flow path, a clear water supply pipe, a clear water jet plate, and an air mixing pipe. Therefore, a drive unit having an upper bearing is cooled by outdoor air, and simultaneously, a sludge removing force can be improved by a bubble jet effect.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sludge removal apparatus for a pump using a bubble jet,

The present invention relates to a pump sludge removing apparatus for cooling a bearing for supporting a driving part and a rotating shaft by an outside air, and for removing sludge adhering to the inner circumferential surface of the discharge casing.

Generally, a pump is a device for sucking and discharging a fluid, which comprises a casing formed with an inlet and a discharge port, and an impeller disposed inside the casing for generating a suction force and a ground output in accordance with rotation, and a motor for rotating the impeller.

On the other hand, since the impeller rotates at the time of starting the pump, the sludge contained in the fluid accumulates on the inner surface of the casing located around the impeller, and thus the impeller is worn.

In order to solve this problem, Korean Patent Registration No. 10-1006925 entitled " Pump Sludge Removal Apparatus "

A conventional pump sludge removing apparatus includes an impeller for sucking a fluid, a casing having an inlet for receiving the impeller and a discharge port for discharging the fluid, and a pump including a motor for rotating the impeller The sludge removing apparatus according to claim 1, further comprising: a fluid receiving groove formed in an inner circumferential surface of the casing on which the impeller is disposed; and a plurality of sludge removing devices for sealing the fluid receiving grooves and injecting a fluid into the casing A jetting portion including a sealing member having a jetting hole formed therein; A circulation pipe connecting the part where the fluid in the casing is discharged and the injection part to supply the fluid to the fluid receiving groove; An external fluid supply pipe connecting the jetting section to an external water supply facility and supplying the fluid supplied from the water supply facility to the fluid receiving groove; A filter for filtering the foreign matter of the fluid supplied to the fluid receiving groove; And a high-pressure pump for increasing a pressure of the fluid supplied to the jetting unit so that the pressure of the fluid ejected to the jetting hole is increased.

The sludge removing device of the conventional pump is capable of preventing the impeller from being worn by removing the foreign matter fixed to the casing by spraying the fluid around the casing in which the impeller is located.

However, since the conventional pump sludge removing device injects only the fluid around the casing to remove the sludge, the sludge removing force is insufficient, and some sludge remains.

In addition, since the conventional sludge removing device can only remove sludge and can not cool the driving part, there is a problem that the upper bearing in which the heat is most concentrated in the driving part is burned out by overheating.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a cooling device for cooling an upper bearing by outside air, And a sludge removing device using the bubble jet capable of improving the removing power of the sludge.

According to an aspect of the present invention, there is provided an apparatus for removing a sludge of a pump using a bubble jet, the apparatus comprising: a driving unit rotated by electricity; a motor casing enclosing the driving unit to protect the fluid from the fluid; And a bubble jet which is installed in an underwater pump including an impeller rotating by the driving unit and an ejection casing which surrounds the impeller and sucks and discharges the fluid to remove the sludge by bubbles, An outside air supply pipe for introducing outside air into the inside of the motor casing from the outside of the dust collecting chamber where the pump is installed to cool the driving unit, An outer air discharge pipe installed in the motor casing, A blowing fan for circulating the outside air introduced into the discharge casing, a fresh water passage formed on the circumferential surface where the impeller is located in the discharge casing, the fresh water passage circulating the fresh water, A fresh water supply pipe for supplying clean water to the fresh water channel; a plurality of spray holes formed in the periphery of the inner circumferential surface of the discharge casing to seal the fresh water channel, spraying fresh water supplied to the fresh water channel in a direction in which the impeller is positioned, And the fresh water sprayed by the blue water swash plate includes air to connect the fresh air discharge pipe and the fresh water discharge pipe or the fresh water supply pipe so as to remove the sludge by the bubble jet effect, And an air introduction pipe for introducing the outside air into fresh water.

The blowing fan can be positioned at an upper portion of the motor casing adjacent to the upper bearing so that outside air supplied to the outside air supply pipe first cools the upper bearing supporting the rotation axis of the driving portion.

A selection valve installed in the air introduction pipe and selectively supplying the outside air to the fresh water supply pipe, and a backflow sensor for sensing fresh water flowing backward through the air introduction pipe.

A first opening / closing valve provided on the fresh water supply pipe to selectively supply fresh water or shut off fresh water when the air introduction pipe is connected to the fresh water supply pipe, And the first on-off valve and the second on-off valve can be repeatedly operated so as to prevent the backflow of fresh water supplied from the fresh water supply pipe to the air introduction pipe, .

In order to prevent the fresh water supplied from the fresh water supply pipe from flowing back to the air introduction pipe when the air introduction pipe is connected to the fresh water supply pipe, And can be inclined at an angle within an angle of 45 [deg.] With respect to the fresh water supply pipe.

The air introduction pipe may include a supply nozzle which is connected to the fresh water supply pipe or the fresh water flow path and has a smaller area toward the end to increase the pressure of the outside air supplied through the air introduction pipe.

And a flow rate increasing unit for narrowing the diameter of the fresh water supply pipe at a portion where the air introduction pipe is connected to the fresh water supply pipe so that the outside air of the air introduction pipe is sucked and mixed with the fresh water through the fresh water supply pipe, have.

According to the present invention, by introducing the outside air into the inside of the motor casing by the outside air supply pipe, not only the driving unit can be cooled, but also the inside air introduced into the inside of the motor casing is supplied to the clean water, It is possible to increase the removal force of the sludge by adding a pressure according to the bursting of the air bubbles to the pressure for spraying fresh water.

In addition, the air blowing fan is installed at a portion located at the upper bearing, and the outside air sucked by the outside air supply pipe is cooled from the portion where the upper bearing having a relatively high temperature is installed, so that burning due to overheating of the upper bearing can be prevented.

In addition, by providing the air only when the sludge is removed by the selection valve, the performance of the pump due to the inflow of air can be prevented from being lowered.

Further, it is possible to prevent the fresh water supply pipe from being inclined to the air introduction pipe, or to prevent the fresh water from flowing back through the air introduction pipe with the supply nozzle installed.

Also, the first opening / closing valve and the second opening / closing valve can be operated repeatedly so as to be opposite to each other, thereby preventing electrical damage of the driving unit due to backwash of fresh water.

FIG. 1 is a schematic side cross-sectional view showing a state in which an apparatus for removing a sludge of a pump using a bubble jet according to a first embodiment of the present invention is applied to a pump and is installed in an accumulator.
FIG. 2 is a side cross-sectional view showing a state in which a pump for sludge removal using a bubble jet is installed in a pump according to a first embodiment of the present invention.
FIG. 3 is a side cross-sectional view of a pump for removing a sludge of a pump using a bubble jet according to the first embodiment of the present invention, and is a view showing an enlarged portion of the discharge casing.
Fig. 4 is a cross-sectional view taken along line AA in Fig. 3, showing a state in which fresh water is sprayed to remove sludge.
FIG. 5 is an enlarged view of a portion of a pump sludge removing apparatus using a bubble jet according to a second embodiment of the present invention, in which an air mixing pipe and a fresh water supply pipe are coupled.
FIG. 6 is a side cross-sectional view of an apparatus for removing a sludge of a pump using a bubble jet according to the third embodiment of the present invention, and is a view showing an enlarged portion of the discharge casing.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the pump 200 in which the pump sludge removing apparatus using the bubble jet according to the first embodiment of the present invention is installed may include a driving unit 210.

The driving unit 210 can rotate the impeller 250, which will be described later.

The driving unit 210 may include a rotor 211 having a rotating shaft 213 and a stator 215 surrounding the rotor 211. The driving unit 210 may be an electric motor rotating by electricity.

The pump 200 may include a motor casing 230.

The motor casing 230 may enclose the driving unit 210 to seal the driving unit 210.

The motor casing 230 may be installed at the lower end portion of the motor casing 230 so as to penetrate the rotation shaft 213. A mechanical seal for preventing inflow of the fluid may be installed at a portion of the motor casing 230 through which the rotation shaft 213 penetrates It is possible.

The pump 200 may include an impeller 250.

The impeller 250 is coupled to the rotating shaft 213 of the driving unit 210 and can rotate together with the rotating shaft 213. The impeller 250 can suck and discharge the fluid by the rotational force.

Meanwhile, the impeller 250 may be disposed such that a plurality of vanes are spaced apart from one another along the circumferential direction.

In addition, the pump 200 may include an ejection casing 270.

The discharge casing 270 is installed so as to surround the periphery of the impeller 250 and sucks the fluid by the rotation of the impeller 250 and can discharge the fluid in the opposite direction.

The pump 200 constructed as described above is installed in such a form that the circumferential surface of the discharge casing 270 is installed in the collector 300 and inserted into the inner surface of the column pipe 310 discharging the fluid stored in the collector 300 to the outside .

2 and 3, the apparatus for removing sludge from a pump using a bubble jet according to the first embodiment of the present invention may include an outside air supply pipe 110 and an outside air discharge pipe 120.

The outside air supply pipe 110 can supply outside air to the inside of the motor casing 230 at an upper portion of the collecting chamber 300.

The outside air supply pipe 110 may be a pipe, and may be constructed by connecting the upper portion of the motor casing 230 and the upper end of the collectors 300.

The outside air discharge pipe 120 is connected to a portion of the motor casing 230 positioned below the driving unit 210 and a portion of the motor casing 230 to be discharged after the outside air supplied to the outside air supply pipe 110 is cooled through the driving unit 210, , And the outside air discharge pipe 120 may also be realized as a pipe.

The outside air supply pipe 110 may be provided with a filtering filter for filtering foreign substances contained in the outside air flowing into the inside of the motor casing 230 through the outside air supply pipe 110.

The pump sludge removing apparatus using the bubble jet according to the first embodiment of the present invention may include a blowing fan 130.

The air blowing fan 130 may provide outside air to the driving unit 210 to cool the driving unit 210 by the outside air.

Meanwhile, the blowing fan 130 may be installed inside the motor casing 230 to provide a suction force for sucking the outside air into the outside air supply pipe 110 and a toe output for discharging the sucked outside air to the outside air discharge pipe 120.

The blowing fan 130 is connected to the rotating shaft 213 and rotates together with the rotating shaft 213. Around the blowing fan 130 is disposed a space in which the outside air is sucked into the inner space of the motor casing 230, A compartmental sealing 140 may be provided to partition the space through which the refrigerant is discharged.

The blowing fan 130 is configured to cool the driving unit 210 in such a manner that the blowing fan 130 is positioned at the upper end of the motor casing 230 to which the outside air supply pipe 110 is connected and discharges the outside air toward the driving unit 210 And may be configured to cool the driving unit 210 in a manner to suck ambient air supplied to the outside air supply pipe 110 at a lower portion of the driving unit 210 in the motor casing 230.

In the case where the blowing fan 130 is positioned above the motor casing 230 as in the embodiment, the outside air introduced into the motor casing 230 is blown into the motor casing 230, The bearing 217 may be cooled first and the superheated air collected at the upper portion may be dispersed to the lower portion to prevent burning due to overheating of the upper bearing 217 and to cool the entire driving portion 210.

In this case, since the heated air collects in the upper part of the motor casing 230, the upper bearing 217 supporting the rotating shaft 213 is easily heated and burns out. However, according to the present invention, The outside air supplied to the inside of the casing 230 is discharged to the lower portion simultaneously with the supply of the outside air by the blowing fan 130, so that the heating of the upper bearing 217 can be prevented.

As shown in FIGS. 2 and 3, the apparatus for removing sludge from a pump using a bubble jet according to the first embodiment of the present invention may include a fresh water channel 170.

The fresh water passage 170 may be a passage through which clean water is moved to spray the fresh water supplied to spray the fresh water from the inner surface of the discharge casing 270 located around the impeller 250.

On the other hand, the fresh water channel 170 may be formed as a channel through which fresh water supplied from the outside is circulated and forms a groove around the inner surface of the discharge casing 270, which is located around the impeller 250.

The fresh water channel 170 may have a fresh water supply port 171 connected to a fresh water supply pipe 150 for supplying fresh water from the outside.

The pump sludge removing apparatus using the bubble jet according to the first embodiment of the present invention may include a fresh water supply pipe 150.

The fresh water supply pipe 150 can supply clean water supplied from the outside to the fresh water channel 170.

On the other hand, the fresh water supply pipe 150 can receive clean water from the water supply equipment 400 located outside the water collecting unit 300 and supply the fresh water to the fresh water channel 170, And a pipe connected to the fresh water supply port 171 of the discharge casing 270 from the upper part.

A high pressure pump is connected to the fresh water supply pipe 150 to increase the pressure of the fresh water supplied from the water supply equipment 400 to the fresh water supply pipe 150 so that fresh water is sprayed at a high pressure from the fresh water dispersing plate 180 .

3 and 4, the apparatus for removing sludge from a pump using the bubble jet according to the first embodiment of the present invention may include a blue water swash plate 180.

The blue water swash plate 180 removes the sludge adhering to the periphery of the impeller 250 in such a manner as to seal the fresh water passage 170 in the discharge casing 270 and spray clear water supplied to the fresh water passage 170 .

The blue water dispersion swash plate 180 may be formed as a ring-shaped plate so as to surround the periphery of the impeller 250. The blue water dispersion swash plate 180 may be provided with a plurality of blue A water hole 181 can be formed.

At this time, the fresh water spray hole 181 may be configured to spray clean water in a direction in which the impeller 250 rotates so as not to resist the direction in which the impeller 250 rotates.

A spray plate mounting groove is formed in the discharge casing 270 so that the blue moisture diffusing plate 180 is mounted on the discharge casing 270 so as not to protrude from the inner surface of the discharge casing 270, Or the like.

As shown in FIGS. 2 and 3, the apparatus for removing sludge from a pump using the bubble jet according to the first embodiment of the present invention may include an air mixing pipe 160.

The air introduction pipe 160 may mix air into the fresh water supplied to the fresh water channel 170 so that fresh water contains air to improve the removal power of the sludge by fresh water.

In this case, when air is mixed into fresh water, abnormal flow is generated in the fluid due to the air contained in fresh water, and not only the fresh water is irregularly injected, but also the pressure of blowing air bubbles contained in fresh water is added to the pressure of fresh water By spraying fresh water with a larger pressure, the removal power of the sludge can be improved.

Meanwhile, the air introduction pipe 160 may connect the outside air discharge pipe 120 and the fresh water supply pipe 150 or the fresh water channel 170 to each other so that air is mixed into the fresh water.

In the drawing, the air introduction pipe 160 is shown as connecting the outside air discharge pipe 120 and the fresh water supply pipe 150.

The air introduction pipe 160 may include a backflow sensor 163.

The backflow sensor 163 senses that the fresh water flows back to the inside of the motor casing 230 through the air introduction pipe 160.

As shown in FIGS. 2 and 3, the apparatus for removing sludge from a pump using a bubble jet according to the first embodiment of the present invention may include a selection valve 161.

The selection valve 161 is connected to the air introduction pipe 160 and the air discharge pipe 120 or to the air introduction pipe 160 so that the air discharged to the air discharge pipe 120 flows into the air introduction pipe 160 The air mixing pipe 160 can be opened or closed so as not to be supplied to the fresh water supply pipe 150 or discharged to the air introduction pipe 160.

The selection valve 161 opens the air introduction pipe 160 so as to supply air to the air introduction pipe 160 only when the sludge is to be removed. When the sludge removal is not performed, the air introduction pipe 160 It is possible to prevent the efficiency of the pump 200 from being lowered due to the mixing of air at the time of starting the pump 200. [

The selector valve 161 is controlled by the controller for controlling the pump 200 so that the selector valve 161 can be configured to open the air mixing pipe 160 only when the sludge of the pump 200 is removed The selection valve 161 closes a portion of the outside air discharge pipe 120 where the outside air is discharged when the air introduction pipe 160 is opened and supplies all of the outside air discharged to the outside air discharge pipe 120 to the air introduction pipe 160 , And only a part of the outside air discharged to the outside air discharge pipe (120) may be discharged to the air introduction pipe (160).

The selector valve 161 is controlled by the controller to shut off the air introduction pipe 160 when the fresh water to be backwashed by the backflow sensor 163 installed in the air introduction pipe 160 is sensed, 210 can be prevented from being damaged.

The operation and effects of the above-described respective structures will be described.

The apparatus for removing a sludge of a pump using a bubble jet according to the first embodiment of the present invention is characterized in that when the pump 200 is activated, the driving unit 210 is operated to rotate the impeller 250 The fluid is sucked and discharged.

When the driving unit 210 is operated, the blower fan 130 installed in the motor casing 230 rotates together with the driving unit 210, and the blower fan 130 is driven by the outside air supply pipe 110, The upper bearing 217 is first cooled by sucking the outside air into the inside of the driving unit 230 and then the driving unit 210 is sprayed in the direction in which the driving unit 210 is positioned to cool the driving unit 210 and be discharged through the outside air discharge pipe 120.

On the other hand, when the pump 200 is operated to remove the sludge, fresh water supplied from the water supply equipment 400 is supplied to the fresh water channel 170 of the discharge casing 270 through the fresh water supply pipe 150, The fresh water supplied to the impeller 250 is sprayed in the direction in which the impeller 250 is positioned through the spray hole of the freshwater dispersion swash plate 180 to remove the sludge adhering to the periphery of the impeller 250.

When the pump 200 is started, the pump 200 rotates the impeller 250 by the driving unit 210, and the blower fan 130 located inside the motor casing 230 also rotates The outside air flows into the outside of the motor casing 230 through the outside air discharge pipe 120, and the outside air is discharged to the outside air discharge pipe 120.

At this time, the selection valve 161 opens the air mixing pipe 160 to supply the outside air discharged to the outside air discharge pipe 120 to the fresh water supply pipe 150 to mix the fresh air into the fresh water supplied to the fresh water supply pipe 150, And supplies it to the flow path 170.

On the other hand, the fresh water mixed with the outside air generates an abnormal flow due to the mixed ambient air, and is sprayed through the spray hole in an irregular shape. At the same time, the air bubbles contained in the fresh air contained in the fresh water burst, Can be improved.

At this time, the controller controls the selection valve 161 to seal the air introduction pipe 160 when fresh water is backwashed from the backflow sensor 163 to the air introduction pipe 160, 230 from entering into the interior.

In addition, although in the embodiment, the outside air inlet, the outside air discharge pipe 120, and the fresh water supply pipe 150 are separately provided, the space for supplying the outside air, the space for discharging the outside air, Or a space into which a power supply line and a sensor line for activating the pump 200 are inserted, or the like.

The apparatus for removing sludge from a pump using a bubble jet according to an embodiment of the present invention is configured to remove outside air from a motor casing (not shown) by an outside air supply pipe 110, an outside air discharge pipe 120, 230, the upper bearing 217 and the driving unit 210 can be cooled by the outside air.

In addition, when the sludge is removed, the sludge can be removed by the bubble jet effect and the abnormal flow by injecting the ambient air into the fresh water through the air introduction pipe 160.

The backflow sensor 163 is installed in the air introduction pipe 160 to prevent electrical damage to the driving unit 210 due to backwashing of fresh water and at the same time a selection valve 161 is provided to remove the sludge The efficiency of the pump 200 due to the mixing of air can be prevented from being lowered.

Hereinafter, a pump sludge removing apparatus using a bubble jet according to a second embodiment of the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the same configuration and operation are the same, and a detailed description thereof will be omitted.

5, the pump sludge removing apparatus using the bubble jet according to the second embodiment of the present invention is configured to prevent the inflow of fresh water through the air introduction pipe 160 connected to the fresh water supply pipe 150 .

In the apparatus for removing sludge from a pump using the bubble jet according to the second embodiment, the flow rate of fresh water supplied through the fresh water supply pipe 150 is faster than the flow rate of the outside air supplied from the air introduction pipe 160, The outside air of the air introduction pipe 160 may be sucked into the fresh water supply pipe 150 and mixed therein.

At this time, in the portion of the fresh water supply pipe 150 where the fresh water supply pipe 150 meets the air introduction pipe 160, a flow rate increase portion 151 of a shape in which the fresh water supply pipe 150 gradually decreases and then gradually increases .

The air introduction pipe 160 may be connected to the fresh water supply pipe 150 so as to supply air in the same direction as the fresh water supply direction in the fresh water supply pipe 150. The air introduction pipe 160 may be connected to the fresh water supply pipe 150, To an angle (R) within an angle range of 45 [deg.

In this case, when the air introduction pipe 160 is connected to the fresh water supply pipe 150 at an angle out of the range of 45 °, fresh water is returned to the air introduction pipe 160 by the pressure of fresh water supplied from the fresh water supply pipe 150 There is a concern.

At the end of the air introduction pipe 160 connected to the air introduction pipe 160 in the fresh water supply pipe 150, the fresh water supply pipe 150 is provided so that the outside air can be supplied to the fresh water supply pipe 150, The supply nozzle 165 may be provided with a smaller area as it goes to a portion where the supply nozzle 165 is supplied.

In the apparatus for removing sludge from a pump using the bubble jet according to the second embodiment of the present invention, when the sludge is removed, the flow rate of clear water supplied from the fresh water supply pipe 150 is lower than the flow rate of air supplied from the air introduction pipe 160 The fresh water supplied from the fresh water supply pipe 150 flows back to the air introduction pipe 160 to prevent the drive unit 210 from being electrically damaged.

In addition, since the air introduction pipe 160 is inclined at a predetermined angle to the fresh water supply pipe 150, it is possible to prevent the drive unit 210 from being electrically damaged due to the reverse flow of fresh water.

Hereinafter, a pump sludge removing apparatus using a bubble jet according to a third embodiment of the present invention will be described. In the third embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the same configuration and operation are the same, and a detailed description thereof will be omitted.

As shown in FIG. 6, the apparatus for removing sludge from a pump using a bubble jet according to the third embodiment of the present invention may include a first opening / closing valve 191 and a second opening / closing valve 192.

The first on-off valve 191 and the second on-off valve 192 can prevent the fresh water supplied through the fresh water supply pipe 150 from flowing back to the air introduction pipe 160.

On the other hand, the first opening / closing valve may be selectively coupled to the fresh water supply pipe 150 to selectively supply fresh water to the fresh water channel 170 through the fresh water supply pipe 150.

The second on-off valve 192 is connected to the air introduction pipe 160 to selectively supply or cut off the outside air supplied to the fresh water supply pipe 150 through the air introduction pipe 160.

At this time, the first on-off valve 191 and the second on-off valve 192 can be respectively coupled in the vicinity of the portion before the fresh water supply pipe 150 and the air introduction pipe 160 are connected, And the second opening / closing valve 192 may be controlled by a controller that operates the pump 200. [

Here, the second on-off valve 192 connected to the air introduction pipe 160 may be implemented by the selection valve 161 of the first embodiment.

The first on-off valve 191 and the second on-off valve 192 configured in this way are operated in a manner opposite to each other by the controller when the sludge is removed, for example, when the first on- off valve 191 opens the fresh water supply pipe 150 When the first on-off valve 191 blocks the fresh water supply pipe 150, the second on-off valve 192 closes the air introduction pipe 160, and on the contrary, It is possible to prevent the fresh water supplied from the fresh water supply pipe 150 from flowing back to the air introduction pipe 160. In this way,

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes and modifications to the scope of the invention.

110: outdoor air supply pipe 120: outdoor air discharge pipe
130: blower fan 140:
150: Fresh water supply pipe 151: Flow rate increasing part
160: air introduction pipe 161: selection valve
163: Reverse flow sensor 165: Feed nozzle
170: Cheongsu Euro 171: Fresh water supply port
180: Blue water sweeper 181: Blue water spray
191: first opening / closing valve 192: second opening / closing valve
200: pump 210:
211: Rotor 213: Rotary shaft
215: stator 217: upper bearing
230: motor casing 250: impeller
270: Discharge casing 310: Column pipe
300: Household correction 400: Water supply facility

Claims (7)

A motor casing enclosing the driving unit to protect the fluid from the fluid, an impeller rotating at the lower end of the motor casing to rotate by the driving unit, and an ejection casing for sucking and discharging the fluid around the impeller, 1. A sludge removal apparatus for a pump using a bubble jet which is installed in a pump and which removes sludge by bubbles,
An outside air supply pipe for introducing outside air into the inside of the motor casing from the outside of the collecting chamber where the pump is installed to cool the driving unit,
An outside air discharge pipe installed to discharge the outside air supplied to the motor casing through the outside air supply pipe back to the outside of the collecting chamber,
A blowing fan installed inside the motor casing for circulating outside air introduced into the motor casing,
A fresh water channel formed in a peripheral surface of the discharge casing where the impeller is positioned,
A fresh water supply pipe connecting the fresh water channel and the external water supply equipment of the water collecting unit to supply fresh water from the water supply equipment to the fresh water channel,
A plurality of blast holes formed on an inner circumferential surface of the discharge casing to seal the clear water passage and spray a clear water supplied to the clear water passage in a direction in which the impeller is positioned to remove sludge;
The fresh water sprayed to the fresh water dispersing plate includes air to connect the outside air discharge pipe and the fresh water passage or the fresh water supply pipe so as to remove the sludge by the bubble jet effect and to mix the outside air discharged through the outside air discharge pipe into fresh water Wherein the pump includes a mixing pipe. The method according to claim 1,
The air-
Wherein the outside air supplied to the outside air supply pipe is located at an upper portion of the motor casing adjacent to the upper bearing so as to cool the upper bearing supporting the rotation axis of the driving unit first. The method according to claim 1,
A selection valve installed in the air introduction pipe and selectively supplying the outside air to the fresh water supply pipe,
And a backflow sensor for detecting fresh water flowing backward through the air introduction pipe. The method according to claim 1,
The air introduction pipe is connected to the fresh water supply pipe,
A first on-off valve installed on the fresh water supply pipe and selectively supplying or blocking fresh water, and
And a second on-off valve provided on the air introduction pipe for supplying or blocking outside air,
Wherein the first on-off valve and the second on-off valve are repeatedly operated so that the supply and the shutoff are opposite to each other in order to prevent the backflow of fresh water supplied from the fresh water supply pipe to the air introduction pipe. Sludge removal device. The method according to claim 1,
The air introduction pipe is connected to the fresh water supply pipe
In order to prevent the fresh water supplied from the fresh water supply pipe from flowing back to the air introduction pipe, the air introduction pipe is inclined at an angle within 45 degrees with respect to the fresh water supply pipe in the same direction as the fresh water supply direction in the fresh water supply pipe Wherein the pump is connected to the sludge tank. The method according to claim 1,
The air-
And a supply nozzle connected to the clean water supply pipe or the clean water flow path, the supply nozzle having an area reduced toward the end so as to increase the pressure of the outside air supplied through the air introduction pipe, Sludge removal device. The method according to claim 1,
And a flow rate increasing unit for narrowing the diameter of the fresh water supply pipe at a portion where the air introduction pipe is connected to the fresh water supply pipe so that the outside air of the air introduction pipe is sucked into the fresh water supply pipe by mixing with the fresh water flow rate, A device for removing sludge from a pump using a bubble jet.


KR1020160046313A 2016-04-15 2016-04-15 a sludge removal apparatus of pump using a bubble jet KR101670077B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101948886B1 (en) * 2018-11-22 2019-02-15 (주)대한중전기 A Pump improved sludge removal by multi nozzle
KR101948885B1 (en) * 2018-11-22 2019-02-15 (주)대한중전기 A Pump improved sludge removal by multi nozzle
KR102210065B1 (en) * 2020-09-03 2021-02-01 효성종합(주) Underwater pump with clear water supply pipe
CN114086656A (en) * 2021-11-30 2022-02-25 中国计量大学 Prefabricated pump station bottom efflux sediment removal device
KR102435463B1 (en) * 2022-04-27 2022-08-23 동원펌프 주식회사 Submersible pump with suction cover that can remove foreign substances
KR20220132920A (en) * 2021-03-24 2022-10-04 하용간 Unblocking Method for Blocked Sludge Exit of a Settling Tank and an Apparatus Using the Same
KR102461409B1 (en) * 2022-01-20 2022-11-02 주식회사 엘제이 이앤에스 A Sludge Transfer Pump System

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Publication number Priority date Publication date Assignee Title
KR101006925B1 (en) * 2010-10-14 2011-01-10 (주)대한중전기 A apparatus for sludge removing of pump
KR101205327B1 (en) * 2012-07-27 2012-11-28 (주)대한중전기 underwater pump with multi pipe
KR101407053B1 (en) * 2013-02-08 2014-06-16 주식회사 엠에스테크 Apparatus for removing sediment of water pump

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Publication number Priority date Publication date Assignee Title
KR101006925B1 (en) * 2010-10-14 2011-01-10 (주)대한중전기 A apparatus for sludge removing of pump
KR101205327B1 (en) * 2012-07-27 2012-11-28 (주)대한중전기 underwater pump with multi pipe
KR101407053B1 (en) * 2013-02-08 2014-06-16 주식회사 엠에스테크 Apparatus for removing sediment of water pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101948886B1 (en) * 2018-11-22 2019-02-15 (주)대한중전기 A Pump improved sludge removal by multi nozzle
KR101948885B1 (en) * 2018-11-22 2019-02-15 (주)대한중전기 A Pump improved sludge removal by multi nozzle
KR102210065B1 (en) * 2020-09-03 2021-02-01 효성종합(주) Underwater pump with clear water supply pipe
KR20220132920A (en) * 2021-03-24 2022-10-04 하용간 Unblocking Method for Blocked Sludge Exit of a Settling Tank and an Apparatus Using the Same
KR102522871B1 (en) 2021-03-24 2023-04-17 하용간 Unblocking Method for Blocked Sludge Exit of a Settling Tank and an Apparatus Using the Same
CN114086656A (en) * 2021-11-30 2022-02-25 中国计量大学 Prefabricated pump station bottom efflux sediment removal device
CN114086656B (en) * 2021-11-30 2024-05-24 中国计量大学 Prefabricated pump station bottom efflux dredging device
KR102461409B1 (en) * 2022-01-20 2022-11-02 주식회사 엘제이 이앤에스 A Sludge Transfer Pump System
KR102435463B1 (en) * 2022-04-27 2022-08-23 동원펌프 주식회사 Submersible pump with suction cover that can remove foreign substances

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