KR101870425B1 - A Pressure conversion type sealing device of underwater motor pump - Google Patents

A Pressure conversion type sealing device of underwater motor pump Download PDF

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Publication number
KR101870425B1
KR101870425B1 KR1020180041170A KR20180041170A KR101870425B1 KR 101870425 B1 KR101870425 B1 KR 101870425B1 KR 1020180041170 A KR1020180041170 A KR 1020180041170A KR 20180041170 A KR20180041170 A KR 20180041170A KR 101870425 B1 KR101870425 B1 KR 101870425B1
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South Korea
Prior art keywords
pressure
seal portion
seal
fluid
pressurizing
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KR1020180041170A
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Korean (ko)
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강덕구
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강덕구
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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/168—Sealings between pressure and suction sides especially adapted for liquid pumps of an axial flow wheel

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

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure conversion type sealing device for an underwater motor pump for airtightly sealing an underwater motor pump and a column pipe. A pressure conversion type sealing device for an underwater motor pump according to an embodiment of the present invention includes a drive motor, an impeller rotating by the drive motor, and a suction casing for guiding suction and discharge of the fluid by surrounding the periphery of the impeller A pressure conversion type sealing device for an underwater motor pump for airtightly sealing a space between a motor pump and a column pipe in which the underwater motor pump is installed is characterized in that a seal is seated on an upper surface of an upper flange formed in a portion of the suction casing, A pressure seal part having one end connected to the inner end of the seating seal part and the other end spaced apart from the outer end of the seating seal part and pressed by the fluid discharged from the suction casing; A deformed seal portion that is elastically deformed to protrude into the inner circumference of the column pipe in accordance with the pressure of the pressurized seal portion; And a pneumatic space surrounded by the seating seal portion, the pressure seal portion, and the deformation seal portion so that the air is filled so that the deformation seal portion is elastically deformed by air pressure in accordance with the pressure of the pressure seal portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure conversion type sealing device for an underwater motor pump,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure conversion type sealing device for an underwater motor pump for airtightly sealing an underwater motor pump and a column pipe.

Generally, a pump for discharging the fluid stored in the collection tank to the outside is installed for collecting water such as a waste water tank, a water tank, a storage tank, and a storm tank.

The pump installed in the house fixation is divided into a submersible pump installed in the column pipe installed in the house fix and sucking and discharging the fluid, and a land pump located in the ground on the driving motor and only in the impeller.

On the other hand, since the land pump is installed in a pump casing in which the impeller functions as a column pipe, it is possible to pump the impeller without any loss of sucked fluid, but in the case of an underwater pump, And the suction casing to be discharged are fitted into the inside of the column pipe, there is a problem that the fluid is leaked between the column pipe and the suction casing and the discharge efficiency of the pump is lowered.

In order to solve this problem, a "pump" of Korean Patent Registration No. 10-1441023 has been disclosed.

A conventional pump includes a pump body including a motor for driving a pump, a rotating shaft coupled to the motor to be rotatable by driving the motor, and an impeller coupled to the rotating shaft. A discharge casing enclosing a portion of the pump body where the impeller is coupled and including an inlet and an outlet through which fluid flows in and out; And a vortex prevention casing mounted on an upper end of the discharge casing and elastically expandable by a moving pressure of the fluid flowing out to the outflow port.

In the conventional pump having such a configuration, the swirling flow preventing casing of the fluid is spread outward by the fluid discharged from the pump, and the gap between the column pipe and the discharge casing is sealed to lower the discharge power of the discharged fluid .

However, in the conventional pump, even if the vortex prevention casing is formed of an elastic body, a large force is required to spread the end of the vortex prevention casing by the toe output, and when the toe output is small, There is a problem that the soil power due to the occurrence of the gap is lowered.

In addition, since the guide tube is formed in an outward shape, when the underwater pump is coupled to the column pipe, the guide tube is caught by the column pipe and is difficult to install.

Further, since the fluid discharged by the impeller can not be stabilized, there is a problem that the pump efficiency is decreased due to the generation of turbulence.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an air conditioner which can easily be elastically deformed according to the pressure of a fluid, So as to provide a pressure conversion type sealing device for an underwater motor pump that is easy to install.

Another object of the present invention is to provide a pressure conversion type sealing device for an underwater motor pump that can guide the fluid to be discharged and stabilize the discharged fluid, thereby increasing the pump efficiency.

According to an aspect of the present invention, there is provided a pressure conversion type sealing device for an underwater motor pump, comprising: a driving motor; an impeller rotating by the driving motor; Wherein the underwater motor pump includes a suction casing and a column pipe in which the underwater motor pump is installed. The pressure conversion type sealing device of an underwater motor pump includes: A pressing seal portion which is seated on the upper surface of the flange and has one end connected to the inner end of the seating seal portion and the other end spaced apart from the outer end of the seating seal portion and pressurized by the fluid discharged from the suction casing; And the other end of the pressure seal part is connected to the other end of the column pipe, And a pneumatic space surrounded by the seating seal portion, the pressure seal portion, and the deformed seal portion so that the air is filled so that the deformed seal portion is elastically deformed by pneumatic pressure in response to the pressing of the pressure seal portion.

The deformed seal portion may have a thickness smaller than the thickness of the pressure seal portion so as to be easily elastically deformed by air in the pneumatic space, and may be formed into a convex curved surface toward the inner periphery of the column pipe.

And a seesaw pressurizing mechanism for pressurizing the pressurizing seal portion by a fluid discharged from the suction casing, wherein the seesaw pressurizing mechanism includes a discharge pushing portion that is located at a portion where the fluid is discharged from the suction casing and is pressurized by the discharged fluid, A seal pressurizing portion positioned in the pressurizing seal portion located opposite to the discharge pressurizing portion to press the pressurizing seal portion, and a seal pressurizing portion for pressurizing the seal pressurizing portion in accordance with the pressurization by the fluid discharged from the discharge pressurizing portion, And a seesaw motion shaft provided between the seal pressing portion and the seal pressing portion.

The discharge pressure applying unit may include a discharge pressure blade that is pressed by the fluid discharged from the suction casing and guides the discharged fluid.

The discharge pressure blades may be rotatably installed around the discharge pressure portion so that a direction for guiding the discharge pressure blades is set according to the pressure of the fluid discharged from the suction casing.

According to the present invention, the pressurized seal portion is pressed by the discharge of the fluid to be discharged, and the deformed seal portion is elastically deformed to seal the space between the column pipe and the suction casing to minimize the flow of the fluid between the column pipe and the suction casing, Can be prevented from being lowered.

Further, since the pressing force for pressing the pressing seal portion is increased in proportion to the pressure of the discharged fluid, the airtightness can be improved.

Further, the pressure conversion type sealing device of the submersible motor pump does not protrude around the suction casing, which is advantageous in that it is easy to install.

In addition, the seesaw motion mechanism is provided with a discharge pressure blade to pressurize the pressurized seal portion, and the pump efficiency can be improved by minimizing the occurrence of turbulent flow of fluid discharged by guiding the discharged fluid.

1 is a side sectional view showing a state in which a pressure conversion type sealing device of an underwater motor pump is installed according to an embodiment of the present invention.
2 is a perspective view showing a pressure conversion type sealing device of an underwater motor pump according to an embodiment of the present invention.
3 is an enlarged view of the portion "A" in Fig.
Fig. 4 is an enlarged view of the portion "A" in Fig. 1, showing the operating state of the pressure conversion type sealing device of an underwater motor pump.

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

1, the submerged motor pump in which the pressure conversion type sealing device 100 of the submersible motor pump according to the embodiment of the present invention is installed is installed in a water collecting tank such as a waste water tank, a water supply tank, The fluid can be sucked and discharged by being installed inside the column pipe 300 which is vertically erected to collect the fluid stored in the crystal.

Meanwhile, the underwater motor pump 200 may include a drive motor 210, an impeller 250, and a suction casing 270.

The drive motor 210 may be an electric motor that is rotated by electricity, and the drive motor 210 may be wrapped by the motor casing 230 to protect it from the fluid stored in the collection.

The impeller 250 is coupled to the driving shaft of the driving motor 210 and rotates in accordance with the rotation of the driving shaft. The impeller 250 generates a suction force for sucking the fluid as it rotates and a to-be-discharged output to suck and discharge the fluid.

Meanwhile, the impeller 250 may have a plurality of blades radially arranged to suck and discharge the fluid, and the impeller 250 may be provided with various known types of impellers 250.

The suction casing 270 can guide the suction and discharge of the fluid by the impeller 250 by surrounding the periphery of the impeller 250 of the suction casing 270, A suction port 271 for sucking the fluid is formed at a lower portion of the impeller 250 in a positioned state and a discharge port 273 for discharging the fluid sucked into the suction port 271 is formed at an upper portion of the impeller 250 .

An upper flange 257 may be formed on the upper end of the suction casing 270 so as to protrude outward from the periphery of the suction casing 270 to minimize the swinging of the suction casing 270 from the inner circumference of the column pipe 300 have.

Since the suction casing 270 can not be inserted into the inside of the column pipe 300 when the periphery of the upper flange 257 is formed to have the same diameter as the inner diameter of the column pipe 300, The circumference of the upper flange 257 is formed to be smaller than the inner diameter of the column pipe 300 so as to be easily inserted and installed in the inside of the column pipe 300.

This causes the fluid discharged to the discharge port 273 of the suction casing 270 to be circulated between the upper flange 257 and the inner circumference of the column pipe 300 and flow in. This not only causes vortex but also causes the pump efficiency May fall.

In order to prevent this, the pressure conversion type sealing device 100 of the submersible motor pump of the present invention is installed to prevent the discharged fluid from flowing between the upper flange 257 and the column pipe 300, And it is possible to prevent the discharge amount from decreasing.

2 to 4, the pressure conversion type sealing apparatus 100 of the submersible motor pump according to the embodiment of the present invention may include the seating seal unit 110. [

The seating seal portion 110 may be formed in a ring plate shape corresponding to the upper flange 257 of the suction casing 270. The seating seal portion 110 may be formed by a bonding agent or a fastening member such as a bolt, And may be coupled to the upper flange 257.

The seating seal portion 110 may be formed to have a diameter not exceeding the periphery of the upper flange 257 so that the suction casing 270 can be easily inserted into the inner circumference of the column pipe 300.

2 to 4, the pressure conversion type sealing apparatus 100 of the submersible motor pump according to the embodiment of the present invention may include a pressurization seal unit 120.

The pressurized seal part 120 can be pressed by the fluid discharged to the discharge port 273 of the suction casing 270. The discharged fluid can be discharged to the upper part by the fluid which is refluxed in the direction opposite to the direction of discharge from the upper flange 257, Lt; / RTI >

One end of the pressure-seal part 120 may be connected to an inner end of the seat-seal part 110, and the pressure-seal part 120 may be formed in the shape of a ring like the seat-seal part 110.

The pressing seal part 120 may be positioned such that the end of the pressing seal part 120 opposite to the part connected to the seating seal part 110 is spaced apart from the outer end of the seating seal part 110. The pressing seal part 120 may be positioned on the seating seal part 110 So that the opposite ends of the pressure seal part 120 can be easily moved away from each other.

2 to 4, the pressure conversion type sealing apparatus 100 of the submersible motor pump according to the embodiment of the present invention may include a deformable seal portion 130. [

The deformed seal portion 130 is elastically deformed to be hermetic so that the deformed seal portion 130 is brought into close contact with the inner circumference of the column pipe 300 when the pressurizing seal portion 120 is pressurized by the fluid.

Meanwhile, the deformed seal portion 130 can connect the spaced apart ends of the pressured seal portion 120 and the seated seal portion 110 to each other.

The deformed seal part 130 may be elastically deformed toward the inner circumference of the column pipe 300 by the pressure of the air flowing in the pneumatic space 140, which will be described below when pressing the pressurizing seal part 120 .

The deformed seal part 130 may be formed of a material that can be elastically deformed like a balloon, for example, a material including rubber, silicone, urethane, The column pipe 300 may have a convex curved surface toward the inner periphery of the column pipe 300 so as to be elastically deformed and protruded toward the inner periphery of the column pipe 300. [

The deformed seal portion 130 may be formed to have a thickness smaller than the thickness of the pressurized seal portion 120 so that the deformed seal portion 130 is easily elastically deformed when the pressurized seal portion 120 is pressed.

2 to 4, the pressure conversion type sealing apparatus 100 of the submersible motor pump according to the embodiment of the present invention may include a pneumatic space 140. [

The pneumatic space 140 may be formed so as to be surrounded by the deformable seal portion 130, the pressurizing seal portion 120, and the seating seal portion 110 so that air can be filled therein.

The pneumatic space 140 presses the deformed seal portion 130 having a relatively low rigidity according to the flow of the air filled in the pressured seal portion 120 so that the deformed seal portion 130 moves the column pipe 300 It can be elastically deformed so as to protrude in the positioned direction.

2 to 4, the pressure conversion type sealing apparatus 100 of the submersible motor pump according to the embodiment of the present invention may include a seesaw pressurizing mechanism 150. [

The seesaw pressurizing mechanism 150 can press the pressurizing seal portion 120 in such a manner that the seesaw pressurizing mechanism 150 is joined by the fluid discharged from the discharge port 273 of the suction casing 270 and seesaw motion.

The seesaw pressurizing mechanism 150 may include a discharge pressurizing portion 151, a seal pressing portion 153, and a seesaw motion shaft 155.

The discharge pushing portion 151 may be exposed to a portion where the fluid is discharged from the suction casing 270 and the seal pushing portion 153 may be positioned on the discharge pushing portion 151 And the seal pressing portion 153 can be connected to each other at mutually opposite positions.

The seal presser 153 may be formed in a shape corresponding to the upper surface of the presser seal 120 so that the upper portion of the presser seal 120 can be uniformly pressed. 257 may be provided.

The seesaw motion axis 155 may be positioned between the discharge pressure section 151 and the seal press section 153 and the seesaw motion axis 155 may be located between the discharge pressure section 151 and the seal press section 153, or they can be fitted in the transverse direction.

Here, the upper flange 257 may be provided with an axial coupling portion 157 to which the seesaw motion shaft 155 is inserted so that the seesaw pressurizing mechanism 150 rotates and seesaw motion, and the axial coupling portion 157 includes a plurality of A plurality of radial projections may be formed on the upper flange 257 so that the seesaw pressurizing mechanism 150 is respectively engaged.

In addition, the seesaw pressurizing mechanism 150 may include a discharge pressure bladder 160.

The discharge pressure blade 160 is pressed against the fluid ejected from the ejection port 273 by being pushed by the ejection pressurizing portion 151 and guiding the fluid to be ejected at the same time to move the fluid unevenly discharged by the impeller 250 So that they can be uniformly guided.

The ejection and pressurizing blade 160 can be formed in a wired shape like a wing of an airplane in the cross section of the ejection and pressurizing blade 160. The ejection and pressurizing blade 160 can be formed in the form of a discharge- As shown in Fig.

When the discharge pressure blade 160 is rotatably coupled to the discharge pressure applying part 151, the discharge pressure blade 160 rotates in correspondence with the pressure of the fluid to guide the discharge fluid, It is possible to reduce the resistance of the fluid caused by the fluid 160 and prevent the decrease in the toe output.

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

The pressure seal type sealing device 100 of the underwater motor pump according to the embodiment of the present invention is characterized in that the seating seal portion 110 is seated on the upper flange 257 of the suction casing 270, One end of the pressurizing seal portion 120 is connected.

The other end of the pressing seal portion 120 and the outer end of the seating seal portion 110 are installed so that the deformable seal portions 130 are connected to each other such that a pneumatic space 140 is formed therein. The deformable seal portion 130 is elastically deformed And is formed into a shape having a convex curved surface toward the inner periphery of the column pipe 300. [

The seesaw motion shaft 155 of the seesaw mechanism is fitted to the shaft engagement portion 157 formed in the upper flange 257 and is installed to perform a seesaw movement according to the rotation, A discharge pressure applying unit 160 is connected to the discharge pressure applying unit 151 which is exposed to the discharge port 273 of the suction mechanism casing 270. The discharge pressure applying unit 160 presses the discharge pressure applying unit 151, As shown in Fig.

The seal pressing portion 153 positioned in the opposite direction to the direction in which the discharge pushing portion 151 is positioned with respect to the seesaw motion axis 155 is located on the upper portion of the pressurizing seal portion 120, May be formed in a shape corresponding to that of the pressurizing seal portion 120 so that the seesaw exercise device seesaw motion and widens the pressurizing area when the seal pressurizing portion 153 is pressed.

In this case, when a plurality of seesaw exercising mechanisms are provided on the upper flange 257, the seal pressing portion 153 may be formed by dividing the number of the pressing seals 120 corresponding to the installed number.

When the impeller 250 is rotated by the drive motor 210, the pressure conversion type sealing device 100 of the underwater motor pump configured as described above is formed at the lower portion of the suction casing 270 by the suction force generated by the impeller 250. [ The fluid flows into the suction port 271, and the fluid flowing into the suction port 271 is discharged through the discharge port 273.

The discharged fluid is discharged to the outside of the collector through the column pipe (300).

When the fluid is discharged to the discharge port 273 of the suction casing 270, the discharging pressurizing blade 160 is pressed by the discharge fluid and pressurized upward, and the seesaw motion mechanism moves the seesaw motion axis 155 The seal presser 153 located in the opposite direction of the discharge pressure blade 160 is downwardly pressed to press the presser seal 120. [

At this time, since the discharge pressure blade 160 rotates about the discharge pressure applying part 151, it does not forcibly guide the discharge direction of the fluid but rotates freely according to the pressure and direction of the discharge fluid, The fluid can be stabilized by reducing the occurrence of turbulent flow of the fluid forcedly discharged as the impeller 250 rotates.

When the pressurizing seal part 120 is pressed, the air in the pneumatic space 140 presses the deformed seal part 130 having a relatively weak rigidity from the inside, and the deformed seal part 130 is moved in the direction in which the column pipe 300 is positioned And seals the periphery of the column pipe 300 and the suction casing 270 while being protruded in accordance with the elastic deformation.

Here, the pressing force for pressing the pressurizing seal portion 120 is generated not only by the seesaw motion mechanism but also by the fluid refluxed by the upper flange 257 while the fluid discharged to the discharge port 273 of the suction casing 270 is discharged. The pressing force for pressing the pressing seal portion 120 is increased in proportion to the pressure of the discharged fluid, so that the airtightness can be improved.

Accordingly, in the pressure conversion type sealing device 100 of the submersible motor pump according to the embodiment of the present invention, the deformed seal portion 130 is elastically deformed by the pressure of the fluid discharged at the time of discharging the fluid, Since the space between the column pipes 300 is sealed, the drop of the pump efficiency due to the decrease of the toe output due to the loss of discharged fluid can be minimized.

In addition, the occurrence of turbulence due to the separation between the column pipe 300 and the suction casing 270 can be reduced to prevent a drop in the pump efficiency.

In addition, the seesaw motion mechanism can increase the pressing force for pressing the pressure seal portion 120 by the pressure of the discharged fluid, and the discharge pressurizing blade 160 is installed in the seesaw exercise mechanism to guide the discharged fluid to generate turbulence The pump efficiency can be improved.

In addition, since the pressing force for pressing the pressing seal portion 120 is increased in proportion to the pressure of the discharged fluid, the airtightness can be improved.

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.

100: Pressure conversion type sealing device of underwater motor pump 110:
120: pressure-sealed portion 130:
140: pneumatic space 150: seesaw pressurizing mechanism
151: Discharge pressurizing portion 153: Seal pressurizing portion
155: Seesaw motion shaft 157:
160: Discharge pressure wing 200: Underwater motor pump
210: drive motor 230: motor casing
250: impeller 270: suction casing
271: Inlet port 273: Outlet port
257: upper flange 300: column pipe

Claims (5)

An underwater motor pump including a drive motor, an impeller rotating by the drive motor, and a suction casing for guiding the suction and discharge of the fluid by surrounding the periphery of the impeller, and a column pipe in which the underwater motor pump is installed, A pressure conversion type sealing device for an underwater motor pump,
A seating seal portion that is seated on an upper surface of an upper flange formed at a portion where the fluid of the suction casing is discharged,
A pressure seal part which is connected at one end to the inner end of the seating seal part and whose other end is spaced apart from the outer end of the seating seal part and is pressurized by fluid discharged from the suction casing,
A deformable seal portion that connects the other end of the seating seal portion and the other end of the pressure seal portion and elastically deforms so as to protrude into the inner circumference of the column pipe in accordance with the pressure of the pressure seal portion;
And a pneumatic space surrounded by the seating seal portion, the pressure seal portion, and the deformed seal portion so that the air is filled so that the deformed seal portion is elastically deformed by pneumatic pressure in accordance with the pressing of the pressure seal portion,
And a seesaw pressurizing mechanism that presses the pressure seal portion by the fluid discharged from the suction casing,
The seesaw pressurizing mechanism
A discharge pressurizing portion which is located at a portion where the fluid is discharged from the suction casing and is pressurized by the discharged fluid,
A seal pressurizing portion positioned in the pressurizing seal portion positioned opposite to the discharge pressurizing portion and pressing the pressurizing seal portion,
And a seesaw motion shaft provided between the discharge pressurizing portion and the seal pressurizing portion so that the seal pressurizing portion seesaw according to the pressurization by the fluid discharged by the discharge pressurizing portion. . The method according to claim 1,
The deformed seal portion
And has a thickness smaller than the thickness of the pressure seal portion so as to be easily elastically deformed by air in the pneumatic space,
Wherein the valve body is formed with a convex curved surface toward the inner periphery of the column pipe. delete The method according to claim 1,
The discharge-
And a discharge pressure blade for guiding a fluid discharged by the fluid discharged from the suction casing and discharged at the same time. 5. The method of claim 4,
The discharge-
Wherein the guide member is rotatably installed around the discharge and pressurizing unit so that a guide direction is set according to the pressure of the fluid discharged from the suction casing.
KR1020180041170A 2018-04-09 2018-04-09 A Pressure conversion type sealing device of underwater motor pump KR101870425B1 (en)

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KR1020180041170A KR101870425B1 (en) 2018-04-09 2018-04-09 A Pressure conversion type sealing device of underwater motor pump

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Application Number Priority Date Filing Date Title
KR1020180041170A KR101870425B1 (en) 2018-04-09 2018-04-09 A Pressure conversion type sealing device of underwater motor pump

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109488613A (en) * 2019-01-14 2019-03-19 湖南赛锘工业技术有限公司 Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet
KR102202751B1 (en) * 2020-08-18 2021-01-13 주식회사 우승산업 Submersible pump that blocks the gap between the pump and the column pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535433B1 (en) * 2015-02-25 2015-07-09 신신이앤지(주) Submersible pump system with a circular stream preventing apparatus and a turbulent flow preventing apparatus
KR101830726B1 (en) * 2017-11-24 2018-02-21 주식회사 신한알앤디 A under water pump improved water tightness of drive shaft

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535433B1 (en) * 2015-02-25 2015-07-09 신신이앤지(주) Submersible pump system with a circular stream preventing apparatus and a turbulent flow preventing apparatus
KR101830726B1 (en) * 2017-11-24 2018-02-21 주식회사 신한알앤디 A under water pump improved water tightness of drive shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109488613A (en) * 2019-01-14 2019-03-19 湖南赛锘工业技术有限公司 Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet
KR102202751B1 (en) * 2020-08-18 2021-01-13 주식회사 우승산업 Submersible pump that blocks the gap between the pump and the column pipe

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