KR101434504B1 - a vertical pump having a apparatus of shaft protecting - Google Patents

a vertical pump having a apparatus of shaft protecting Download PDF

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Publication number
KR101434504B1
KR101434504B1 KR1020140043103A KR20140043103A KR101434504B1 KR 101434504 B1 KR101434504 B1 KR 101434504B1 KR 1020140043103 A KR1020140043103 A KR 1020140043103A KR 20140043103 A KR20140043103 A KR 20140043103A KR 101434504 B1 KR101434504 B1 KR 101434504B1
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KR
South Korea
Prior art keywords
fresh water
drive shaft
protective pipe
pump
delay
Prior art date
Application number
KR1020140043103A
Other languages
Korean (ko)
Inventor
이석희
Original Assignee
(주)대한중전기
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Filing date
Publication date
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Priority to KR1020140043103A priority Critical patent/KR101434504B1/en
Application granted granted Critical
Publication of KR101434504B1 publication Critical patent/KR101434504B1/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
    • 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
    • F04D29/007—Details, component parts, or accessories 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • 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
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • 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
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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

Abstract

The present relates to a vertical pump for ejecting fluid from a storage tank. A vertical pump having an apparatus for protecting a driving shaft according to an embodiment of the present invention includes an ejector casing for allowing fluid to flow therein or out therefrom, a driving motor including a driving shaft passing through the ejector casing, and an impeller coupled to the driving shaft for absorbing or ejecting the fluid, wherein the apparatus for protecting a driving shaft includes a protective pipe surrounding the driving shaft and having a pure water inlet through which pure water is input from pure water supply equipment, and a delay unit positioned in the protective pipe and for delaying a time taken to move the pure water to a low portion of the protective pipe. Thus, the pump efficiency can be prevented from being deteriorated due to a foreign substance inserted into the driving shaft, and the driving shaft can be prevented from being worn away so that the durability is improved.

Description

Technical Field The present invention relates to a vertical pump having a shaft protection device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chopper pump for discharging a fluid stored in a water reservoir to the outside.

Generally, it is a device for discharging the fluid stored in the water tank to the outside, which is located in the water of the nozzle pump water tank.

The conventional chopper pump includes a casing formed with a suction port and a discharge port, an impeller disposed at a lower portion of the casing for sucking and discharging the fluid, and a drive motor coupled to the impeller and having a drive shaft for rotating the impeller, A supporting portion is provided for supporting the bearing, and a bearing is provided in the supporting portion for smooth rotation of the driving shaft.

Such a chopper pump sucks and discharges a fluid by rotating the drive shaft of the drive motor while the suction port is submerged in the water. When a water tank containing foreign substances is installed, for example, when a chopper pump is installed in the wastewater tank, There is a problem that the efficiency of the pump is deteriorated due to foreign matter interfering with the bearing of the support portion.

In order to solve this problem, a conventional chopper pump has been disclosed as a "seawater pump" in Korean Patent No. 10-972202 (published on July 23, 2010).

The conventional seawater pump includes: a positive housing having a suction port through which seawater flows; A rotation shaft mounted along the longitudinal direction of the positive housing and rotated by a drive force of a drive motor; An impeller mounted on an end of the rotary shaft and rotatably driven to suck seawater; A shaft protection tube mounted inside the positive housing along the rotation shaft to protect the outside of the rotation shaft; A bearing mounted between the shaft protecting tube and the rotating shaft; A bearing support for mounting the bearing on the shaft protection pipe and forming seawater grooves through which the seawater flows to supply seawater to the surface of the bearing; And a seawater guider mounted on the suction port side of the positive housing to guide inflow of the seawater.

In the conventional seawater pump having such a constitution, a seawater guider is installed on the suction port side, and the seawater is sucked in the state that the seawater is filtered by the seawater guider, thereby preventing the efficiency of the pump from being deteriorated due to the foreign matter.

However, when the conventional seawater pump contains relatively many foreign substances, the foreign material is blocked by the foreign substance in the seawater guider and the fluid can not be sucked into the pump smoothly. Since the seawater is also introduced into the shaft protective pipe, There is little effect of preventing the efficiency of the pump from dropping due to foreign matter that has not been caught by being caught by the bearing.

In addition, since the conventional seawater pump can not supply seawater for lubricating operation in the absence of seawater in the water tank, it is impossible to perform the test operation because the friction of the drive part is serious.

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 prevent foreign matter from being caught in a drive shaft, to minimize a drop in efficiency of the pump, The present invention provides a chopper pump having a drive shaft protection device capable of increasing the number of drive shaft protrusions.

According to an aspect of the present invention, there is provided a chopper pump having a drive shaft protection device, including a discharge casing through which a fluid is introduced and discharged, a drive motor including a drive shaft passing through the discharge casing, And a drive shaft protecting device for protecting the drive shaft in a orbiting pump including an impeller for sucking and discharging a fluid, the apparatus comprising: a protective pipe including a fresh water inlet for surrounding the drive shaft and flowing fresh water from the fresh water supplying device; And a delay unit positioned inside the protective tube to delay the time for the clear water to move to the lower portion of the protective tube.

The delay unit may include a delay plate interposed therebetween to partition the inside of the protective pipe and having a plurality of fresh water flow holes through which fresh water flows downward.

The delay unit may include a delay bushing that surrounds the drive shaft in the protective pipe and has a flow path on the inner surface of the clean water to allow the clear water to flow downward.

The protection tube may include a fresh water discharge port through which fresh water supplied from the fresh water inlet to the inside is discharged.

And an opening / closing door that opens or closes the fresh water discharge port.

The opening and closing door may include a buoyant portion that generates buoyancy by fresh water supplied to the inside of the protective pipe and opens the fresh water outlet.

According to the present invention, a protective pipe for protecting the drive shaft is provided, and fresh water is supplied to the inside of the protective pipe to prevent foreign matter from being caught on the drive shaft, thereby preventing the drop in efficiency of the oil pump and preventing wear of the drive shaft. .

In addition, by cooling the bearing supporting the drive shaft by clean water, the efficiency of the orbiting pump can be improved.

In addition, the open / close door is provided in the fresh water discharge port through which fresh water is discharged, and the fresh water remaining in the inside of the protective pipe is discharged to the outside, thereby preventing the drive shaft from being corroded by fresh water remaining in the protective pipe.

1 is a schematic cross-sectional view of a chopper pump having a drive shaft protection device according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a chopping pump having a drive shaft protection device according to an embodiment of the present invention, and is a view enlarging the lower part of the chopping pump.
3 is a schematic block diagram of a drive shaft protecting apparatus constituting a orbiting pump having a drive shaft protecting apparatus according to an embodiment of the present invention.
4 is a perspective view showing a delay plate of a delay unit constituting a drive shaft protecting apparatus of a chopper pump having a drive shaft protecting apparatus according to an embodiment of the present invention.
5 is a perspective view illustrating a delay bushing of a delay unit constituting a drive shaft protecting apparatus of a chopper pump having a drive shaft protecting apparatus according to an embodiment of the present invention.
6 is an enlarged view of the portion "A" in Fig. 3, showing the operating state of the opening and closing door.

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

1 and 2, a chopper pump 200 having a drive shaft protecting apparatus 100 according to an embodiment of the present invention includes a discharge casing 210, a drive motor 220, and an impeller 230 .

One end of the discharge casing 210 is formed with a suction port 211 which is located near the bottom of the water storage tank 250 where the fluid is stored and in which the fluid is sucked, The other end of the discharge casing 210 is exposed to the outside of the water storage tank 250 to form a discharge port 213 through which the suction port 211 is discharged.

The discharge casing 210 is connected to a discharge pipe 270 through which the fluid of the water storage tank 250 is discharged to the outside.

The impeller 230 is rotatably coupled to the suction port 211 of the discharge casing 210 and sucks the fluid through the suction port 211 by the rotational force and discharges the sucked fluid through the discharge port 213 .

The driving motor 220 provides a driving force for rotating the impeller 230 and the rotating driving shaft 221 of the driving motor 220 extends to the vertical upper portion of the impeller 230, Quot; to the drive motor 220 located at the top of the water storage tank 250.

If the length of the drive shaft 221 is long, the buckling phenomenon may occur during rotation. Therefore, the drive shaft 221 is supported by the support portion 215, which supports the drive shaft 221 at the discharge casing 210, And the support portion 215 may be provided with a bushing or a bearing 217 to reduce frictional force between the drive shaft 221 and the support portion 215.

When the driving shaft 221 of the driving motor 220 rotates, the impeller 230 coupled to the driving shaft 221 rotates, centrifugal force is generated in the rotating impeller 230, The fluid is sucked through the suction port 211 of the casing 210 and the fluid is discharged to the discharge pipe 270 through the discharge port 213. [

The input shaft pump 200 installed in the water storage tank 250 for storing the wastewater is provided with a drive shaft 221, more specifically a bearing installed on the support 215 for supporting the drive shaft 221, The drive shaft protecting device 100 described below is installed in the orbiting pump 200 to prevent the efficiency of the pump from being lowered due to foreign matter adhering to the pump shaft 217.

In addition, the construction of the above-mentioned orifice pump is well known in the art and may be modified into various forms.

1 to 3, a chopper pump having a drive shaft protecting apparatus 100 according to an embodiment of the present invention may include a drive shaft protecting apparatus 100.

This drive shaft protecting apparatus 100 can prevent the efficiency of the pump caused by the drive shaft from falling due to foreign matter being caught in the drive shaft.

On the other hand, the drive shaft protecting apparatus 100 includes a protective pipe 110.

This protective pipe 110 can prevent a foreign matter from being caught on the drive shaft 221 by wrapping around the drive shaft 221 passing through the discharge casing 210.

The protective pipe 110 may protect the upper portion of the impeller 230 and the lower portion penetrating the discharge casing 210 from the portion of the drive shaft 221 and protect the protective pipe 110. The protective pipe 110 may include a fresh water inlet (111) and fresh water discharge port (113) through which clean water is discharged.

The fresh water is supplied to the inside of the protective pipe 110 to lubricate the bearing 217 provided in the support portion 215 supporting between the drive shaft 221 and the discharge casing 210, It is possible to wash out the foreign matter introduced into the protection pipe 110 or prevent the foreign matter from flowing into the inside of the protection pipe 110.

At this time, the fresh water inlet 111 may be formed at the upper portion of the protective pipe 110, and the fresh water outlet 113 may be formed at the lower portion of the protective pipe 110.

Meanwhile, the protective pipe 110 may be configured such that a plurality of portions between the fresh water inlet 111 and the fresh water outlet 113 are divided and welded or flanged to be coupled to each other, and the fresh water inlet 111 May be connected to a fresh water supply facility 170 located outside the water storage tank 250, for example, a water supply facility or a storage tank for temporarily storing clean water, to supply fresh water to the inside of the protection pipe 110.

The drive shaft protection device 100 may include a delay unit 130. [

The delay unit 130 delays the time for the fresh water flowing into the fresh water inlet 111 of the protective pipe 110 to move downward to allow the fresh water to be sufficiently supplied to the bearing 217 supporting the drive shaft 221, So that the supply of fresh water can be minimized and the waste of fresh water can be prevented.

The delay unit 130 delays the time for the fresh water to stay in the portion where the support unit 215 supporting the drive shaft 221 is located in the discharge casing 210 and allows the fresh water to be supplied to the bearing 217 provided in the support unit 215, It is possible to cool the bearing 217 which is overheated due to the rotation of the drive shaft 221 while lubricating the bearing 217. [

As shown in FIG. 4, the delay unit 130 may include a delay plate 131.

The delay plate 131 may be installed inside the protective pipe 110 so as to block the inside of the protective pipe 110 through which clean water passes.

A through hole 133 through which the drive shaft 221 passes is formed at the center of the delay plate 131 and a plurality of fresh water holes 132 So that fresh water flows to the lower portion of the protective pipe 110 only through the fresh water circulation hole 132, thereby delaying the movement of fresh water flowing to the lower portion of the protective pipe 110.

The delay plate 131 may be provided with a delay plate 131 forming a plurality of tanks in the protective pipe 110 so that a pair of the delay plates 131 are formed on the upper portion and the lower portion of the support portion 215 on which the bearings 217 are installed.

As shown in FIG. 5, the delay unit 130 may include a delay bushing 135.

The delay bushing 135 is inserted between the protective pipe 110 and the drive shaft 221 to support the drive shaft 221 in the protective pipe 110.

The delay bushing 135 is formed in a cylindrical shape so that its outer surface is supported on the inner circumference of the protective pipe 110 and the drive shaft 221 is fitted on the inner circumferential surface thereof. And the fresh water flows through the flow path 136 to lubricate the drive shaft 221 inserted into the inner circumferential surface of the delay bushing 135.

The flow path 136 formed in the inner circumferential surface of the delay bushing 135 may be formed in various shapes such as a spiral shape and a mesh shape so that clear water can pass therethrough. The fresh water may enter the flow path 136 through the upper surface of the delay bushing 135 and the fresh water passing through the flow path 136 may be discharged to the bottom surface of the delay bushing 135.

A plurality of delay bushings 135 may be installed in the protective pipe 110.

Here, the delay unit 130 may be configured such that only one of the delay plate 131 and the delay bushing 135 is installed, or both of the delay plate 131 and the delay bushing 135 may be installed together.

As shown in FIG. 6, the drive shaft protecting apparatus 100 may include an opening / closing door 150.

The opening and closing door 150 prevents foreign matter-containing fluid from flowing into the inside of the protective pipe 110 when the clean water outlet 113 formed at the lower portion of the protective pipe 110 is opened or closed, The fresh water supplied to the inside of the protective pipe 110 can be discharged to the outside.

The opening and closing door 150 is formed in a cylindrical shape and can be installed to be slidable upward and downward from the inner circumference of the protective pipe 110. The opening and closing door 150 is extended to the protective pipe 110, (Not shown) may be formed to limit the movement distance.

The opening and closing door 150 may include a buoyancy portion 151 for opening the fresh water outlet 113 by buoyancy.

The buoyant portion 151 is provided at an upper portion of the opening and closing door 150 and is lifted by clear water supplied into the protective pipe 110 to open the opening and closing door 150.

On the other hand, the buoyant portion 151 is formed in a ring shape on the upper portion of the opening / closing door 150, and the drive shaft 221 can be fitted to the center of the buoyant portion 151. The buoyant portion 151 has a specific gravity An air receiving space may be formed of a light material such as styrofoam or an air receiving space in which air is received.

Here, it is a matter of course that a gap is formed between the buoyant portion 151 and the drive shaft 221 so that clear water can flow into the lower portion of the buoyant portion 151 and float.

The opening and closing door 150 is lifted by the buoyant portion 151 to open the fresh water outlet 113 when the fresh water starts to flow into the lower portion of the protective pipe 110 and is returned to its own weight when the fresh water is discharged through the fresh water outlet 113 So that the clean water remaining in the protective pipe 110 is discharged in such a manner that the clean water discharge port 113 is closed so that the drive shaft 221 can be prevented from being corroded by the residual fresh water.

The operation and effect between the above-described respective constitutions will be described.

The input shaft pump 200 having the drive shaft protecting apparatus 100 according to the embodiment of the present invention is provided with the impeller 230 at the lower end of the discharge casing 210 and the drive motor 220 The drive shaft 221 passes through the discharge casing 210 and is coupled to the impeller 230.

The drive shaft protection device 100 is installed in the drive shaft 221. [

The drive shaft protecting device 100 includes a protective tube 110 fitted to the portion of the drive shaft 221 positioned between the impeller 230 and the lower portion of the casing through which the drive shaft 221 passes, The upper portion is formed with a fresh water inlet 111 through which fresh water flows and a fresh water outlet 113 through which fresh water flowing in the lower portion is discharged.

The fresh water inlet 111 is connected to the fresh water supply facility by a hose so that fresh water can be supplied from an external fresh water supply facility.

In addition, a delay unit 130 is provided in the middle of the protective pipe 110 to delay the time for the fresh water flowing into the protective pipe 110 to be discharged downward.

The delay unit 130 may include a delay plate 131 having a plurality of fresh water circulation holes 132 and a delay bushing 135 having a flow channel 136 formed on an inner circumferential surface thereof. .

Here, the delay plate 131 is preferably installed in a pair of upper and lower portions of the support portion 215 supporting the drive shaft 221 in the discharge casing 210.

An opening and closing door 150 for opening or closing the fresh water outlet 113 is installed in the clean water outlet 113 of the protective pipe 110 so as to be slidable upward and downward from the inside of the protective pipe 110, 150 is provided with a buoyant portion 151 to open the fresh water discharge port 113 by buoyancy when fresh water is supplied into the protective pipe 110.

When the drive shaft 220 is rotated by the drive motor 220 and the impeller 230 connected to the drive shaft 221 rotates, the orifice pump 200 having the drive shaft protector 100 configured as described above is rotated by the discharge casing 210 To the discharge port 213 through the suction port 211 of the discharge port 213.

The input shaft pump 200 having the drive shaft protection device 100 is supplied with fresh water from the fresh water supply device 170 to the drive shaft protection device 100 along with the operation of the drive motor 220, The clean water flows into the inside of the protective pipe 110.

The incoming fresh water moves to the lower portion of the protective pipe 110 and the movement to the lower portion is delayed from the portion where the delay unit 130 is provided to lubricate and cool the bearing 217 supporting the drive shaft 221.

At this time, when the delay unit 130 is configured as the delay plate 131, the fresh water moves down through the fresh water circulation hole 132 of the delay unit 130. When the delay unit 130 includes the delay bushing 135, Passes through the flow path 136 formed in the inner peripheral surface of the delay bushing 135, and moves downward.

When the fresh water moved downward through the delay unit 130 flows into the gap between the drive shaft 221 and the buoyancy part 151 of the opening and closing door 150, the buoyancy part 151 floats by fresh water, The fresh water discharged from the fresh water outlet 113 is discharged by the discharge of the impeller 230 together with the fluid contained in the reservoir 250 270).

When the fresh water is stopped from being supplied from the fresh water supply facility 170 and all of the fresh water remaining in the protective pipe 110 is discharged through the fresh water discharge port 113, the buoyancy part 151, The opening and closing door 150 moves to the lower portion of the protective pipe 110 by its own weight and seals the fresh water outlet 113.

At this time, the opening and closing door 150 repeats opening and closing according to the amount of fresh water supplied into the protective pipe 110.

For example, when the opening / closing door 150 is filled with fresh water enough to generate buoyancy of the buoyancy portion 151 in the state where the opening / closing door 150 is closed, the fresh water outlet 113 is opened to supply fresh water through the fresh water outlet 113 The clear water outlet 113 is opened and closed according to the amount of clear water remaining in the protective pipe 110 in such a form that the clear water outlet 113 is blocked again by its own weight when the buoyant force of the buoyant portion 151 is lost, Closing is repeated.

On the other hand, the supply of clean water to the protective pipe 110 is performed to cool the bearing 217 or the drive shaft 221 during start-up of the orbital pump 200, to remove foreign matter, Or may be supplied as needed to remove foreign matter that has flowed into the interior of the protective pipe 110 after startup of the orbital pump 200. [

Therefore, in the orbiting pump 200 having the drive shaft protecting apparatus 100 according to the embodiment of the present invention, the protective tube 110 surrounds the drive shaft 221, so that the foreign substance is supplied to the drive shaft 221 from the fluid stored in the water tank 250, It is possible to prevent the efficiency of the orbiting pump 200 from being lowered.

The delay unit 130 is provided to delay the movement of fresh water passing through the inside of the protective pipe 110 so that the lubricating action and the cooling of the bearing 217 are performed for a sufficient time, Not only can it be improved, but also waste water can be minimized.

Further, fresh water is supplied through the protective pipe 110 to lubricate the friction portion of the drive shaft 221, thereby preventing wear of the drive shaft 221 and improving the durability of the orbiting pump.

The opening and closing door 150 is provided with a buoyant portion 151 for discharging fresh water remaining in the protective pipe 110 by buoyancy to prevent corrosion of the drive shaft 221 due to residual fresh water.

While the present invention has been particularly shown and 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: drive shaft protection device 110: protective pipe
111: fresh water inlet 113: fresh water outlet
130 delay unit 131 delay plate
132: Fresh water distribution ball 133: Through hole
135: Delay bushing 136: Euro
150: opening / closing door 151:
170: Fresh water supply facility
200: Orbital pump with drive shaft protection device
210: Discharge casing 211: Suction port
213: discharge port 215:
217: Bearing 220: Drive motor
221: drive shaft 230: impeller
250: Reservoir 270: Discharge tube

Claims (6)

A drive shaft protecting device for protecting the drive shaft in a orbiting pump including a discharge casing in which a fluid flows in and out, a drive motor including a drive shaft passing through the discharge casing, and an impeller coupled to the drive shaft to suck and discharge fluid, A chopper pump comprising:
The drive shaft protection device
A protective pipe enclosing the periphery of the drive shaft and including a fresh water inlet through which fresh water flows from the fresh water supply equipment,
A delay plate which is located inside the protective pipe and intercepts the inside of the protective pipe so as to delay the time for the clear water to move to the lower portion of the protective pipe and has a plurality of fresh water circulation holes through which clear water flows downward;
And a delay unit including one or both of a delay bushing which surrounds the drive shaft in the protective pipe and in which a channel through which the clear water passes is disposed on the inner surface so that the clear water flows downwardly. Chopper pump. delete delete The method according to claim 1,
The protective tube
And a fresh water discharge port through which fresh water supplied from the fresh water inlet to the inside is discharged. 5. The method of claim 4,
The protective tube
And an opening / closing door for opening / closing the fresh water discharge port. 6. The method of claim 5,
The opening / closing door
And a buoyant portion formed of a material having a specific gravity less than that of water or having an air receiving space in which air can be received to generate buoyancy by fresh water supplied to the inside of the protective pipe A chopper pump with a device.

KR1020140043103A 2014-04-10 2014-04-10 a vertical pump having a apparatus of shaft protecting KR101434504B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140043103A KR101434504B1 (en) 2014-04-10 2014-04-10 a vertical pump having a apparatus of shaft protecting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140043103A KR101434504B1 (en) 2014-04-10 2014-04-10 a vertical pump having a apparatus of shaft protecting

Publications (1)

Publication Number Publication Date
KR101434504B1 true KR101434504B1 (en) 2014-08-26

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Application Number Title Priority Date Filing Date
KR1020140043103A KR101434504B1 (en) 2014-04-10 2014-04-10 a vertical pump having a apparatus of shaft protecting

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101967796B1 (en) * 2018-12-27 2019-04-10 (주)대한중전기 Vertical pump with minimal sludge trapping by sludge prevention plate
KR102381264B1 (en) * 2021-09-30 2022-04-01 (주)대한중전기 A pump that minimizes the jamming of foreign substances by the anti-jamming ring

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006307727A (en) 2005-04-28 2006-11-09 Kubota Corp Vertical shaft pump and operation method of vertical shaft pump
JP2008088905A (en) 2006-10-02 2008-04-17 Hitachi Plant Technologies Ltd Vertical shaft pump
JP2008128188A (en) 2006-11-24 2008-06-05 Torishima Pump Mfg Co Ltd Vertical shaft pump
KR100861577B1 (en) 2007-01-22 2008-10-09 윤홍태 Chemicals Vertical removal pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006307727A (en) 2005-04-28 2006-11-09 Kubota Corp Vertical shaft pump and operation method of vertical shaft pump
JP2008088905A (en) 2006-10-02 2008-04-17 Hitachi Plant Technologies Ltd Vertical shaft pump
JP2008128188A (en) 2006-11-24 2008-06-05 Torishima Pump Mfg Co Ltd Vertical shaft pump
KR100861577B1 (en) 2007-01-22 2008-10-09 윤홍태 Chemicals Vertical removal pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101967796B1 (en) * 2018-12-27 2019-04-10 (주)대한중전기 Vertical pump with minimal sludge trapping by sludge prevention plate
KR102381264B1 (en) * 2021-09-30 2022-04-01 (주)대한중전기 A pump that minimizes the jamming of foreign substances by the anti-jamming ring

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