KR100968384B1 - Underwater motor pump - Google Patents

Abstract

The present invention relates to an underwater motor pump, and more specifically, a casing inlet and outlet are formed on one side and the other side, respectively; A housing detachably installed at an upper portion of the casing so as to communicate with the casing, a stator provided inside the housing, and a rotor provided on a driving shaft to be located inside the stator. A motor unit extending in an upper direction to be exposed to the outside of the upper end of the housing and a lower part extending in a lower direction to be exposed to the outside of the lower end of the housing; An upper bearing and a lower bearing axially coupled to upper and lower driving shafts of the motor unit and provided at upper and lower ends of the housing of the motor unit; The first and second chambers are detachably installed at upper and lower ends of the housing of the motor unit, and the upper and lower driving shafts of the motor unit are respectively accommodated therein, and the driving shaft of the motor unit accommodated in the first and second chambers. A sealing member consisting of first and second mechanical seals respectively provided on the upper and lower outer peripheries; An impeller axially coupled to a lower portion of a driving shaft of the motor unit and accommodated in the casing and rotating along a driving shaft of the motor unit; A plate part detachably installed on an upper end of the housing of the motor part so that the first seal chamber of the sealing member may be disposed therein, and a first slit formed at equal intervals on an upper surface thereof, and vertically formed below the plate part; A cover having a rim formed on the surface of the second slit at equal intervals; It is axially coupled to the upper drive shaft of the motor unit so as to be located inside the cover, and rotates along the drive shaft of the motor unit to cool the motor unit by introducing external air into the cover through the first and second slits. It relates to an underwater motor pump comprising a; cooling fan to.

Since the present invention configured as described above can more efficiently cool the motor part exposed to the air, there is no fear that the motor part is overheated and a safety accident such as a failure occurs, and further, the drive shaft rotation of the motor part is not smooth. In order to smoothly rotate the drive shaft of the motor unit, it is not necessary to separate the motor unit as a whole, and thus there is an effect of preventing a safety accident such as a failure in advance.

Casing, motor part, upper bearing and lower bearing, sealing member, impeller, cover, cooling fan

Description

Submersible Motor Pump {UNDERWATER MOTOR PUMP}

The present invention and the casing is formed in the inlet and outlet respectively on one side and the other side; A housing detachably installed at an upper portion of the casing so as to communicate with the casing, a stator provided inside the housing, and a rotor provided on a driving shaft to be located inside the stator. A motor unit extending in an upper direction to be exposed to the outside of the upper end of the housing and a lower part extending in a lower direction to be exposed to the outside of the lower end of the housing; An upper bearing and a lower bearing axially coupled to upper and lower driving shafts of the motor unit and provided at upper and lower ends of the housing of the motor unit; The first and second chambers are detachably installed at upper and lower ends of the housing of the motor unit, and the upper and lower driving shafts of the motor unit are respectively accommodated therein, and the driving shaft of the motor unit accommodated in the first and second chambers. A sealing member consisting of first and second mechanical seals respectively provided on the upper and lower outer peripheries; An impeller axially coupled to a lower portion of a driving shaft of the motor unit and accommodated in the casing and rotating along a driving shaft of the motor unit; A plate part detachably installed on an upper end of the housing of the motor part so that the first seal chamber of the sealing member may be disposed therein, and a first slit formed at equal intervals on an upper surface thereof, and vertically formed on a lower part of the plate part; A cover having a rim formed on the surface of the second slit at equal intervals; It is coupled to the upper drive shaft of the motor portion so as to be located inside the cover, and rotates along the drive shaft of the motor portion to cool the motor unit by introducing external air into the cover through the first and second slits. It relates to an underwater motor pump comprising a; cooling fan.

In general, a submersible motor pump is installed in a water purification plant, a wastewater treatment plant, a cellar where flooding is concerned, or a fish farm that contains a large amount of water.

These submersible motor pumps are classified into submersible submersible motor pumps, submersible submersible motor pumps, and ground installation types, and are always in contact with water so that they are waterproofed.

Here, the submersible motor pump is large, the electric motor unit; A water chamber coupled to a lower portion of the electric motor unit; And an impeller accommodated inside the case coupled to the lower portion of the water chamber, the impeller being axially coupled to the lower portion of the drive shaft of the electric motor unit and rotating along the drive shaft of the electric motor unit.

Meanwhile, when the submersible motor pump discharges water contained in a water purification plant, a wastewater treatment plant, a cellar, and a fish farm to the outside, the water level of the water contained in the water purification plant, a wastewater treatment plant, a cellar, and a fish farm is lowered, so that the electric motor part is exposed to the air. When the electric motor unit is driven in an exposed state, there is a problem that a safety accident such as a failure occurs due to overheating of the electric motor unit.

In addition, when the driving shaft rotation of the electric motor unit is not smooth, in order for the driving shaft rotation of the electric motor unit to be smoothly rotated, an operator usually has to close the electric motor unit as a whole, and thus a safety accident such as a failure may occur. There are many concerns.

The present invention was created in order to solve the above-described problems, so that the motor part exposed to the air can be cooled more efficiently, so that the motor part is overheated and there is no fear of a safety accident such as a failure. When the drive shaft rotation of the motor unit is not smooth, it is not necessary to separate the motor unit as a whole to facilitate the rotation of the drive shaft of the motor unit, and also provides an underwater motor pump that can prevent safety accidents such as a failure in advance. It is for that purpose.

The present invention for achieving the above object and the casing is formed in the inlet and outlet respectively on one side and the other side; A housing detachably installed at an upper portion of the casing so as to communicate with the casing, a stator provided inside the housing, and a rotor provided on a driving shaft to be located inside the stator. A motor unit extending in an upper direction to be exposed to the outside of the upper end of the housing and a lower part extending in a lower direction to be exposed to the outside of the lower end of the housing; An upper bearing and a lower bearing axially coupled to upper and lower driving shafts of the motor unit and provided at upper and lower ends of the housing of the motor unit; The first and second chambers are detachably installed at upper and lower ends of the housing of the motor unit, and the upper and lower driving shafts of the motor unit are respectively accommodated therein, and the motor unit accommodated in the first and second chambers. A sealing member comprising first and second mechanical seals respectively provided on the upper and lower outer peripheries of the drive shaft; An impeller axially coupled to a lower portion of a driving shaft of the motor unit and accommodated in the casing and rotating along a driving shaft of the motor unit; A plate part detachably installed on an upper end of the housing of the motor part so that the first seal chamber of the sealing member may be disposed therein, and a first slit formed at equal intervals on an upper surface thereof, and vertically formed below the plate part; A cover having a rim formed on the surface of the second slit at equal intervals; It is coupled to the upper drive shaft of the motor portion so as to be located inside the cover, and rotates along the drive shaft of the motor portion to cool the motor unit by introducing external air into the cover through the first and second slits. It provides a submersible motor pump, characterized in that it comprises a cooling fan.

Here, the first and second slits are preferably formed in an acute angle on the upper surface of the plate portion and the surface of the edge portion, respectively.

Furthermore, a guide plate extending downward in the lower portion of the edge portion of the cover to guide the outside air introduced into the cover to the outer periphery of the housing of the motor part is vertically formed, and the outside introduced into the cover. Air is moved to the outer periphery of the housing of the motor unit along the guide plate through the inlet of the protrusion formed in the horizontal direction on one side of the lower edge of the edge portion and the inlet formed on the housing top of the motor unit, the lower end of the guide plate in the direction of the housing of the motor unit It is preferable that the inclined portion is formed downward slope.

According to the present invention, a cooling fan coupled to an upper portion of a driving shaft of the motor unit rotates along the driving shaft of the motor unit to cool the motor unit by introducing external air into the cover through the first and second slits of the cover. The water level stored in the water is gradually lowered to more efficiently cool the motor unit exposed to the air, and as a result, there is no fear of overheating the motor unit to cause a safety accident such as a failure. When the impeller axially coupled to the lower part rotates along the drive shaft of the motor unit to discharge water stored in a predetermined place to the outside through the discharge port of the casing, the floating material may also be discharged to the outside together with the discharged water.

In addition, if the floating material is stuck to the impeller axially coupled to the lower portion of the drive shaft of the motor unit and the rotation of the drive shaft of the impeller and the motor unit is not smooth, the cover shaft is removed and the drive shaft exposed to the outside of the housing top of the motor unit. By arbitrarily rotating the cooling fan coupled to the upper part, the floating material adhering to the impeller can be separated from the impeller by the rotational force, so that the driving shaft of the impeller and the motor unit can be smoothly rotated again. In order to smoothly rotate the driving shaft of the motor unit as in the related art, it is not necessary to separate the motor unit as a whole, and there is an effect of preventing a safety accident such as a failure in advance.

Furthermore, the first and second slits formed in the upper and the upper surface and the surface of the plate portion and the edge portion of the cover, respectively, can be turned into the outside air flowing into the inside of the cover, thereby causing the inside of the cover Since swirl flow can be generated, the motor portion exposed to the air can be cooled more efficiently.

In addition, the external air introduced into the cover of the motor is moved to the outer periphery of the housing of the motor unit along a guide plate extending downwardly through the inlet of the protrusion and the inlet of the housing to the lower side of the edge of the cover; Negative cooling efficiency is more effective to maximize.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Of course, the scope of the present invention is not limited to the following examples, and various modifications can be made by those skilled in the art without departing from the technical gist of the present invention.

1 is a cross-sectional view schematically showing an embodiment of the present invention.

Submersible motor pump is an embodiment of the present invention as shown in Figure 1, the casing 10, the motor unit 30, the upper bearing 50 and the lower bearing 70, the sealing member 90, the impeller 100 ), A cover 130 and a cooling fan 150 are configured.

First, the casing 10 is fixed to a certain place where fluid such as water is stored, for example, a water purification plant, a wastewater treatment plant, a basement fish farm, etc. An inlet 101 for receiving stored water is formed, and a discharge port 103 for discharging the water obtained through the inlet 101 is formed at the other side.

Here, although not shown in the drawing, a discharge pipe for discharging water discharged by the discharge hole 103 to the outside may be hermetically connected.

The shape and structure of the casing 10 is not limited to FIG. 1, but is sufficient if the casing 10 has a shape and a structure that can be fixed to the inner bottom 7 of a predetermined place where water is stored.

Next, the motor unit 30 is detachably installed on the casing 10 so as to communicate with the casing 10, and as shown in FIG. 1, the motor unit 30 is largely communicated with the casing 10. A housing 301 detachably installed on an upper portion of the casing 10; A stator 303 provided inside the housing 301; And a rotor 305 provided on the drive shaft 307 to be positioned inside the stator 303.

Here, the housing 301 is detachably mounted on the casing 10 by a fixing member 301a, for example, a bolt that penetrates the housing 301 and is screwed to the casing 10. Can be installed.

The stator 303 and the rotor 305 may be formed of a magnet and a winding coil, for example.

Rotating force is generated in the rotor 305 by a magnetic field generated when a controller (not shown) applies power to the stator 303 provided inside the housing 301, thereby driving the drive shaft 307. It is to be rotated in the forward or reverse direction, which is a known technique and at the same time it will be understood by those skilled in the art to which the present invention pertains will be clearly understood so that the detailed description thereof will be omitted.

Meanwhile, as shown in FIG. 1, an upper portion of the driving shaft 307 extends upwardly to be exposed to the outside of the upper end of the housing 301, and a lower portion is lowered to be exposed to the outside of the lower end of the housing 301. Extending in a direction to be accommodated in the casing 10.

The shape and structure of the motor unit 30 is not limited to FIG. 1, but is sufficient if the motor unit 30 has a shape and a structure that can be detachably installed on the casing 10 so as to communicate with the casing 10.

Next, the upper bearing 50 and the lower bearing 70 are for more smoothly rotating the drive shaft 307 of the motor unit 30, as shown in Figure 1 the motor unit 30 Is coupled to the upper and lower drive shaft 307 of the motor unit 30 is provided at the upper and lower ends of the housing 301 of the motor unit 30, respectively.

The shape and structure of the upper bearing 50 and the lower bearing 70 is not limited to FIG. 1, but is formed in a shape and a structure capable of more smoothly rotating the drive shaft 307 of the motor unit 30. It's enough.

Next, the sealing member 90 is to prevent the water stored in a certain place from flowing into the housing 301 of the motor unit 30, as shown in FIG. 1, the motor unit ( First and second chambers 901 and 903 which are detachably installed at upper and lower ends of the housing 301 of the housing 30 and in which upper and lower driving shafts 307 of the motor unit 30 are respectively received; First and second mechanical seals 905 and 907 respectively disposed on upper and lower outer peripheries of the drive shaft 307 of the motor unit 30 accommodated in the first and second chambers 901 and 903. It can be made of).

The first and second chambers 901 and 903 may be, for example, bolts that are respectively screwed into the upper and lower ends of the housing 301 through the first and second chambers 901 and 903. The fixing member 901a of the motor unit 30 may be detachably installed at the upper and lower ends of the housing 301.

Next, the impeller 100 rotates along the drive shaft 307 of the motor unit 30 to discharge water stored in a predetermined place to the outside, as shown in FIG. 1, the motor unit 30. The shaft is coupled to the lower portion of the drive shaft 307 is accommodated inside the casing (10).

When the impeller 100 rotates along the drive shaft 307 of the motor unit 30, water stored in a predetermined place is discharged into the discharge port 103 after being obtained through the inlet 101 of the casing 10. At this time, the water discharged to the discharge port 103 is discharged to the outside through the discharge pipe that is hermetically connected to the discharge port 103.

As the water stored in a certain place is discharged to the outside through the inlet 101, the discharge port 103 and the discharge pipe of the casing 10, the water level of the water stored in the predetermined place is gradually lowered.

The shape and structure of the impeller 100 is not limited to FIG. 1, and is formed in a shape and a structure capable of rotating along the drive shaft 307 of the motor unit 30 to discharge water stored in a predetermined place to the outside. It's enough.

Next, the cover 130 is detachably installed at the upper end of the housing 301 of the motor unit 30, and as shown in FIG. 1, the first chamber 130 of the sealing member 90 is large. 901 is detachably installed on the upper end of the housing 301 of the motor unit 30 so as to be located therein.

Here, the cover 130 is large, the plate portion 131, the first slit (131a of FIG. 2) is formed on the upper surface at equal intervals; It is formed perpendicular to the lower portion of the plate portion 131, the second slit (133a of FIG. 2) formed on the surface at an equal interval; may be made of.

Here, for example, the cover 130 is screwed to the upper end of the housing 301 of the motor unit 30 through the protrusion 135 formed in a horizontal direction on one side of the lower end of the rim 133. The fixing member 135a such as a bolt may be detachably installed on the upper end of the housing 301 of the motor unit 30.

FIG. 2 is a plan view taken along the line AA of FIG. 1.

Meanwhile, as shown in FIG. 2, the first and second slits 131a and 133a may be formed in an acute angle on the upper surface of the plate portion 131 and the surface of the edge portion 133, respectively.

When the first and second slits 131a and 133a are formed in an acute angle, respectively, through the first and second slits 131a and 133a to the inside of the cover 130 by the cooling fan 150 to be described later. The inflow of external air is able to turn, and thus, the swirl flow can be generated inside the cover 130, thereby allowing the motor unit 30 exposed to the air to be cooled more efficiently. There will be (see Figure 3).

The shape and structure of the cover 130 is not limited to FIGS. 1 and 2, and the cover 130 may be formed in a shape and a structure that can be detachably installed on the housing 301 of the motor unit 30.

3 is a cross-sectional view schematically illustrating a state in which the cooling fan 150 cools the motor unit 30.

Next, the cooling fan 150 is for cooling the motor unit 30 exposed to air, and as shown in FIGS. 1 and 3, the motor may be located inside the cover 130. The shaft 30 is coupled to an upper portion of the driving shaft 307 of the unit 30 to rotate along the driving shaft 307 of the motor unit 30.

More specifically, first, the water level of the water (5 in FIG. 3) stored in a certain place is too high, the motor motor 30 under the control of the controller (not shown) in the state in which the submerged motor pump is immersed in the water (5) When the drive shaft 307 is rotated, the impeller 100 is rotated along the drive shaft 307 of the motor unit 30 so that the water (5) stored in a predetermined place inlet 101 of the casing 10 It is to be discharged to the outside through the discharge port 103 and the discharge pipe.

On the other hand, when the submersible motor pump is immersed in the water (5), the water (5) is introduced into the cover 130 through the first and second slits (131a, 133a), the motor unit in this state When the driving shaft 307 of the 30 rotates, the cooling fan 150 axially coupled to the upper driving shaft 307 of the motor unit 30 rotates along the driving shaft 307 of the motor unit 30. At the same time, the water 5 introduced into the cover 130 is pivoted, and the motor part 30 being driven by the cooling fan 150 is first driven first. It becomes possible to cool more efficiently.

In addition, when the water 5 stored in a predetermined place is discharged to the outside and the water level is lowered, the motor unit 30 is exposed to the air, even when the motor unit 30 is exposed to the air. ) Is continuously rotated so that outside air flows into the cover 130 through the first and second slits 131a and 133a.

That is, the motor unit 30 is secondarily cooled while the external air flowing into the cover 130 through the first and second slits 131a and 133a is exposed to the air. .

Here, as shown in FIG. 3, the lower side of the edge portion 133 of the cover 130 extends downward and flows into the inside of the cover 130 to rotate the outside air of the motor unit 30. It is more preferable that the guide plate 137 leading to the outer circumference of the housing 301 is formed vertically.

For example, as shown in FIG. 3, external air flowing into the cover 130 and turning outside the inlet 135b and the motor of the protrusion 135 formed in a horizontal direction at a lower side of the edge portion 133. Passing through the inlet 301b formed at the upper end of the housing 301 of the unit 30, the guide plate 137 moves to the outer periphery of the housing 301 of the motor unit 30.

Here, since the inclined portion 139 is inclined downward in the direction of the housing 301 of the motor unit 30 at the lower end of the guide plate 137 is formed in a horizontal direction on the lower side of the edge portion 133 ( Outside air passing through the inlet (135b) of the 135 and the inlet (301b) formed on the upper end of the housing (301) of the motor unit 30 moves more easily to the outer periphery of the housing (301) of the motor unit (30) Can be.

Outside air flowing into the cover 130 and turning through the inlet 135b of the protrusion 135 and the inlet 301b of the housing 301 has a lower edge 133 of the cover 130. Since the movement to the outer periphery of the housing 301 of the motor unit 30 along the guide plate 137 extending downward in one side has the advantage that the cooling efficiency of the motor unit 30 can be further maximized do.

The shape and structure of the cooling fan 150 is not limited to FIGS. 1 and 3, and the cooling fan 150 may be formed in a shape and a structure capable of cooling the motor unit 30 exposed to air.

According to the present invention configured as described above, the cooling fan 150 axially coupled to the drive shaft 307 of the motor unit 30 rotates along the drive shaft 307 of the motor unit 30 to cover the cover 130. Water level of the water (5) stored in a predetermined place is gradually lowered because the motor unit 30 is cooled by introducing external air into the cover 130 through the first and second slits 131a and 133a. Not only can the motor unit 30 exposed to the air be cooled more efficiently, but this also causes the motor unit 30 to overheat so that there is no risk of a safety accident such as a failure. The impeller 100 axially coupled to the lower portion of the drive shaft 307 of the 30 rotates along the drive shaft 307 of the motor unit 30 to discharge water 5 stored at a predetermined place from the discharge port of the casing 10. In addition to the water (5) discharged when discharged to the outside through the 103 is also suspended matter There is an advantage that can be discharged.

In addition, since the floating material adheres to the impeller 100 axially coupled to the lower portion of the drive shaft 307 of the motor unit 30, the rotation of the drive shaft 307 of the impeller 100 and the motor unit 30 is not smooth. If not, the cooling fan 150 axially coupled to the upper portion of the drive shaft 307 of the motor unit 30 exposed to the outside of the housing 301 of the motor unit 30 after the cover 130 is removed. The drive shaft 307 of the impeller 100 and the motor unit 30 is again rotated because the floating material adhering to the impeller 100 can be separated from the impeller 100 by rotational force. Not only can it be smoothly rotated, of course, there is no need to separate the motor unit 30 as a whole in order to smoothly rotate the drive shaft 307 of the motor unit 30 as well as a failure accordingly. Safety accidents also can be prevented The.

1 is a cross-sectional view schematically showing an embodiment of the present invention,

FIG. 2 is a plan view taken along line AA of FIG. 1,

3 is a cross-sectional view schematically showing a state in which a cooling fan cools a motor unit.

*** Explanation of symbols for main parts of drawing ***

5; Water, 7; floor,

10; Casing, 101; Eating,

103; Discharge port 30; Motor,

301; Housings 301a, 901a, 135a; Fixed member,

301b, 135b; Inlet, 303; Stator,

305; Rotor, 307; driving axle,

50; Upper bearing, 70; Lower Bearing,

90; Sealing member, 901; 1st chamber,

903; Second chamber 905; 1st mechanical thread,

907; Second mechanical thread, 100; Impeller,

130; Cover, 131; Mischief,

131a; First slit 133; Border,

133a; Second slit, 135; projection part,

137; Information plate, 139; Slope,

150; Cooling fan.

Claims (3)

A casing having inlets and outlets respectively formed at one side and the other side; A housing detachably installed at an upper portion of the casing so as to communicate with the casing, a stator provided inside the housing, and a rotor provided on a driving shaft to be located inside the stator. A motor unit extending in an upper direction to be exposed to the outside of the upper end of the housing and a lower part extending in a lower direction to be exposed to the outside of the lower end of the housing; An upper bearing and a lower bearing axially coupled to upper and lower driving shafts of the motor unit and provided at upper and lower ends of the housing of the motor unit; The first and second chambers are detachably installed at upper and lower ends of the housing of the motor unit, and the upper and lower driving shafts of the motor unit are respectively accommodated therein, and the driving shaft of the motor unit accommodated in the first and second chambers. A sealing member consisting of first and second mechanical seals respectively provided on the upper and lower outer peripheries; An impeller axially coupled to a lower portion of a driving shaft of the motor unit and accommodated in the casing and rotating along a driving shaft of the motor unit; A plate part detachably installed on an upper end of the housing of the motor part so that the first seal chamber of the sealing member may be disposed therein, and a first slit formed at equal intervals on an upper surface thereof, and vertically formed below the plate part; A cover comprising a rim formed on the surface of the second slit at equal intervals; It is coupled to the upper drive shaft of the motor portion so as to be located inside the cover, and rotates along the drive shaft of the motor portion to cool the motor unit by introducing external air into the cover through the first and second slits. Submersible motor pump comprising a; cooling fan. The method of claim 1, The first and second slits are submerged motor pump, characterized in that formed on the upper surface of the plate portion and the surface of the edge portion in an acute angle, respectively. The method of claim 1, A guide plate is formed at one side of the lower edge of the cover and extends downward to guide the external air introduced into the cover to the outer periphery of the housing of the motor unit. The outside air introduced into the cover is moved to the housing outer periphery of the motor unit along the guide plate through the inlet of the protrusion formed in the horizontal direction on the lower side of the edge portion and the inlet formed in the housing of the motor unit, Underwater motor pump, characterized in that the lower end of the guide plate is formed inclined downward in the direction of the housing of the motor unit.

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