KR101205327B1 - underwater pump with multi pipe - Google Patents

Abstract

PURPOSE: A submerged pump with a multi-pipe is provided to protect various kinds of cables being exposed to a flow passage by integrating the same, thereby easily installing a submerged pump and reducing costs for installing and manufacturing the submerged pump. CONSTITUTION: A submerged pump comprises a pump unit(100) and multi-pipe(200). The pump unit comprises an impeller(110) and driving unit(120). The multi-pipe integrates various kinds of cable being connected to the pump unit in the outside of a water tank. The multi-pipe comprises an outer tube, an inner tube, a distribution fixture, and an elastic joining fixture. The outer tube is extended to the outside of the water tank on the top of the pump unit. The various kinds of cables are inserted into the outer tube. Air is supplied to the frame through the outer tube. The inner tube partitions the inside of the outer tube in order to prevent a mixture with the air passing the outer tube. The air supplied to the frame is discharged through the inner tube. The distribution fixture joins the outer tube to the frame. The elastic joining fixture elastically joins the outer tube in the distribution fixture in order to absorb impact added on the outer tube.

Description

Underwater pump with multi-pipe

The present invention relates to a submersible pump having a multi-pipe which can prevent damage by integrating a power cable for controlling the submersible pump or a fixed cable for fixing the submersible pump.

In general, the submersible pump is a device for sucking the fluid stored in the reservoir to discharge to the outside of the reservoir.

The submersible pump includes an impeller for sucking and discharging fluid, a drive unit for driving the impeller, and a frame for sealing the drive unit, so that the fluid stored in the water tank is stored in the water tank through a column pipe provided in the water tank. Discharge to the outside.

On the other hand, since the submersible pump is located in a state submerged in the fluid stored in the reservoir, a power cable for supplying power to the submersible pump, a fixed cable for supporting the submersible pump in the reservoir, and the like are connected to the submersible pump outside of the reservoir.

However, the cables connected to the submersible pump are flowed by the fluid stored in the reservoir, causing a problem that the part connecting the submersible pump and the cable is easily disconnected.

In order to solve such a problem, the 'submersible motor pump facility' of Korean Utility Model Registration No. 20-00449653 has been disclosed.

Conventional submersible motor pump equipment has a protective tube for wrapping and protecting the outside of the cable, the first connecting portion and the second connecting portion for coupling the protective tube to the submersible motor pump, and the first hermetic member for sealing between the first connecting portion and the second connecting portion And a cable protection device including a second hermetic member.

The cable protection device of the above-described configuration was able to prevent cable breakage by preventing the cable from flowing by the fluid by wrapping and protecting the outside of the cable with a protective tube.

However, the conventional submersible motor pump facility has a problem that the vibration of the submersible motor pump is transmitted to the protective tube when the submersible motor pump is driven to accumulate fatigue in the protective tube, the protective tube is broken.

In addition, since the protective tube must be installed on all cables connected to the submersible pump, respectively, the installation cost is increased, the installation time is increased, and the manufacturing cost is increased.

In addition, a plurality of cables connected to the submersible motor pump generates a turbulence in the fluid discharged, there is a problem that the discharge amount is reduced.

The present invention is to solve the problems as described above, the problem to be solved by the present invention is to integrate various cables connected to the submersible pump to reduce the installation cost and manufacturing cost, and to prevent damage by vibration In addition, it is possible to increase the discharge amount by minimizing the generation of turbulence, to provide an underwater pump having a multi-pipe that can perform a variety of functions other than cable protection.

Submersible pump having a multi-pipe according to an embodiment of the present invention for achieving the above object is a pump unit including an impeller for sucking and discharging fluid, a drive unit for rotating the impeller, and a frame sealing the drive unit And a multi pipe including a multi pipe incorporating various cables connected to the pump unit from an outside of the water tank in which the pump unit is installed, wherein the multi pipe is formed at the top of the pump unit. An inner pipe extending outside and partitioning the inside of the exterior to prevent mixing with air passing through the exterior and supplying air to the frame at the same time the various cables are inserted, and the air supplied to the frame is discharged. A dispensing port for coupling said appearance to said frame, and an image for absorbing the impact applied to said appearance. It includes an elastic coupling sphere for elastically coupling the appearance in the distribution port.

The multi-pipe includes an elastic support for elastically supporting the multi-pipe in the reservoir tank to absorb the impact applied to the multi-pipe.

The elastic support portion is formed in the center of the through-hole through which the multi-tube is inserted seating plate seated in the reservoir, a fixing plate for fixing the seating plate to the water tank, located in the inner circumference of the through hole is the appearance on the seating plate It may include an elastic seal for elastically supporting, and a pressure ring for pressing the elastic seal to elastically deform so that the elastic seal is in close contact with the appearance.

The multi-pipe may further include a dust cover for preventing the inflow of foreign matter into the outer tube and the outer tube exposed to the outside of the reservoir.

The pump unit includes a circulation pipe for supplying air to the lower portion of the drive unit in the frame, the distribution port is connected to the circulation pipe can be formed a supply hole for supplying air supplied through the exterior to the circulation pipe have.

The driving unit may include a blowing fan for circulating air in the frame.

The multi pipe further comprises a fresh water supply pipe for supplying fresh water by partitioning the inside or the inside of the inner tube, the pump unit is connected to the fresh water supply pipe nozzle supply pipe for supplying fresh water to the part where the impeller is located, and It may further include an injection nozzle for removing sludge by injecting fresh water supplied to the nozzle supply pipe to the impeller.

The elastic coupling sphere may be a corrugated pipe having an elastic force.

The external appearance of the cable may be formed through the cable entry hole through which the various cables are inserted into the interior of the exterior.

According to the present invention, by integrating and protecting various cables exposed on the flow path through which the fluid is discharged, not only the installation of the submersible pump is easy, but also the installation cost and manufacturing cost of the submersible pump can be reduced.

In addition, the multi-pipe is provided with a fresh water supply pipe, the function to circulate the air is integrated together to improve the cooling efficiency of the submersible pump, it is possible to provide a test operation function and a sludge removal function of the submersible pump.

In addition, since various cables are integrated and accommodated in the multi-pipe, the discharge amount of the submersible pump can be increased by minimizing the generation of turbulence in the discharged fluid.

In addition, the dust cover is provided to prevent foreign matters from entering the multi-pipe.

In addition, the multi-pipe can be supported by the elastic support and the elastic coupling port to prevent the multi-pipe from being damaged by vibration.

1 is a side cross-sectional view schematically showing a state in which an underwater pump having a multi-pipe according to an embodiment of the present invention is installed in a reservoir.
Figure 2 is a side cross-sectional view showing a part of the pump unit of the submersible pump having a multi-pipe according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view schematically showing a multi pipe of the submersible pump having a multi pipe according to an embodiment of the present invention.
4 is a cross-sectional view taken along line AA of FIG. 3.
5 is a perspective view showing a distribution port of the configuration of the multi-pipe of the submersible pump having a multi-pipe according to an embodiment of the present invention.
Figure 6 is a side cross-sectional view showing a coupling state of the distribution port and the elastic coupling of the configuration of the multi-pipe of the submersible pump having a multi-pipe according to an embodiment of the present invention.
Figure 7 is an exploded perspective view of the elastic support of the submersible pump having a multi-pipe according to an embodiment of the present invention.
Figure 8 is a side cross-sectional view showing the elastic support of the submersible pump having a multi-pipe according to an embodiment of the present invention.

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

An underwater pump having a multi-pipe according to an embodiment of the present invention is an underwater pump in which the pump unit 100 is installed inside the column pipe 310 installed to suck or discharge the fluid stored in the reservoir 300 to the outside. Although described as, it may be applied to a variety of submersible pumps that are provided outside the column pipe 310 or located in the water to suck or discharge the fluid.

In the present specification, the outside of the reservoir 300 may mean a portion of the column pipe 310 protruding to the outside of the reservoir 300.

As shown in Figure 1 and 2, the submersible pump having a multi-pipe according to an embodiment of the present invention may include a pump unit (100).

The pump unit 100 may suck the fluid and discharge the sucked fluid.

On the other hand, the pump unit 100 is positioned in the state of being inserted into the interior of the column pipe 310 may discharge the fluid stored in the reservoir 300 to the outside through the column pipe 310.

In addition, the pump unit 100 may include an impeller 110. The impeller 110 may suck and discharge fluid by a rotating centrifugal force.

On the other hand, the impeller 110 may be configured in a shape in which a plurality of wings are disposed radially in the circumferential direction around the rotation axis 125, a known impeller 110 of various forms may be applied.

The pump unit 100 may include a driving unit 120.

The drive unit 120 may be composed of a rotor 123 and a stator 121, the stator 121 is disposed in the form of surrounding the circumference of the rotor 123 is a rotor (by the force of electrical magnetic force) 123 may be configured to rotate.

In addition, the impeller 110 is coupled to the rotation shaft 125 of the rotor 123 so that the impeller 110 may rotate by the rotation of the rotor 123.

On the other hand, the driving unit 120 may include a blowing fan 170. The blowing fan 170 may circulate the internal air of the frame 130 surrounding the driving unit 120 to be described below.

In addition, the blowing fan 170 may be connected to the rotating shaft 125 of the rotor 123 to rotate together with the rotor 123 when the rotor 123 rotates, and the blowing fan 170 may include the driving unit 120. ) May be located inside the frame 130 to enclose and enclose it.

Here, the blowing fan 170 may be coupled to the opposite end portion of the rotating shaft 125 to which the impeller 110 is coupled around the center of the rotor 123.

At this time, the blowing fan 170 is the air located in the interior of the frame 130 in the form that the air located in the lower portion of the frame 130 to be described later to move to the top of the frame 130 through the drive unit 120 Can be flown.

The pump unit 100 may include a casing 135. The casing 135 is coupled to the frame 130 to be described below in the form of wrapping around the impeller 110, the inlet 136 through which the fluid flows from the casing 135 to the lower part of the impeller 110. The upper part of the impeller 110 may form a discharge port 137 through which the introduced fluid is discharged.

The outer circumferential surface of the casing 135 is fixed to the inner circumferential surface of the column pipe 310 to fix the casing 135 to the column pipe 310 to fix the pump unit 100 to the inside of the column pipe 310. Can be.

The pump unit 100 may further include a nozzle supply pipe 150 and an injection nozzle 151.

The nozzle supply pipe 150 may be supplied with fresh water from the outside to supply a portion where the impeller 110 is positioned in the casing 135.

In addition, one end of the nozzle supply pipe 150 may be connected to a portion where the impeller 110 is positioned in the casing 135, and the other end of the nozzle supply pipe 150 may be connected to a distribution port 230 to be described below.

On the other hand, the injection nozzle 151 is provided on the inner circumferential surface of the casing 135 in which the impeller 110 is located in the casing 135 to spray the fresh water supplied from the nozzle supply pipe 150 in the direction in which the impeller 110 is located. Can be.

Here, of course, a plurality of nozzle supply pipes 150 may be provided around the casing 135.

For example, the injection nozzle 151 forms a fresh water supply path at a portion of the inner circumferential surface where the impeller 110 is located in the casing 135, and the jet plate formed with a plurality of injection holes is sealed in the fresh water supply path to the nozzle supply pipe 150. It may be configured to spray the fresh water supplied to the fresh water supply passage through the injection hole of the injection plate (see enlarged portion in FIG. 2).

In this way, by spraying fresh water from the injection nozzle 151, by the centrifugal force of the impeller 110 to remove the sludge (sludge) fixed to the inner circumferential surface of the casing it is possible to prevent the damage of the impeller 110 due to the fixing of the sludge. .

The pump unit 100 may include a frame 130. The frame 130 may seal the driving unit 120 to prevent the fluid from flowing into the driving unit 120 of the pump unit 100 located in the water.

And, the frame 130 may be provided with a circulation tube 140 for circulating the internal air. The circulation pipe 140 may supply external air to the inside of the frame 130.

Here, one end of the circulation pipe 140 may be connected to the lower portion where the drive unit 120 is located in the frame 130, the other end of the circulation pipe 140 may be coupled to the distribution port 230 to be described below. The plurality of circulation pipes 140 may be provided around the frame 130.

In addition, the upper portion of the frame 130, more specifically, the portion where the distribution port 230 is connected to the air discharge hole 133 is formed to discharge the air inside the frame 130 to the outside of the frame 130 Can be.

In this case, the air discharge hole 133 may be sealed by the distribution port 230 so that the internal air of the frame 130 may be discharged to the outside only through the distribution port 230.

As shown in Figure 3, the submersible pump having a multi-pipe according to an embodiment of the present invention may include a multi-pipe 200.

The multi-pipe 200 may integrate various cables 390 connected to the pump unit 100 from the outside of the reservoir 300 to prevent various cables flexibly bent in the flow of fluid to accumulate fatigue and disconnection. have.

In addition, the multi-pipe 200, more specifically, the exterior 210 to be described below includes various cables 390, for example, a power cable for supplying power to the pump unit 100, and a pump unit 100. A fixing cable supported by 300 may be inserted. Here, the power cable may include a signal cable for controlling the pump unit 100.

On the other hand, as shown in Figure 4, the multi-pipe 200 may include an appearance (210). Exterior 210 is formed in a hollow tubular shape so that one end of the exterior 210 is connected to the upper end of the pump unit 100, the other end of the exterior 210 is a reservoir 300 on the vertical line of the pump unit 100 May be partially exposed to outside.

At this time, since the other end of the exterior 210 is located in an open state outside the reservoir 300, air may be introduced through the exterior 210, and the exterior 210 is preferably formed of metal.

In addition, at the other end of the exterior 210, that is, the portion of the exterior 210 exposed to the outside from the reservoir 300, the various cables 390 described above are moved into the interior of the exterior 210 in a direction orthogonal to the exterior 210. At least one cable entry hole 211 may be formed to be inserted.

Here, the various cables are inserted into the interior of the exterior 210 through the respective cable entry hole 211 to prevent the various cables are tangled with each other.

The multi-pipe 200 may include an inner pipe 220 (see FIG. 4). The inner tube 220 may partition the interior of the exterior 210 so that air passing through the exterior 210 is not mixed, and is discharged to the air discharge hole 133 of the frame 130 through the inner tube 220. Air may be discharged to the outside of the reservoir 300.

At this time, one end of the inner tube 220 may be connected to the air discharge hole 133 formed in the frame 130, the other end of the inner tube 220 is partially to the outside of the reservoir 300, the same as the other end of the appearance (210). Can be configured to be exposed.

On the other hand, the inner tube 220 is formed in a tubular shape, may be formed in a length similar to the length of the outer appearance 210 is inserted into the interior of the outer appearance 210.

The multi-pipe 200 may include a fresh water supply pipe 370 (see Fig. 4). The fresh water supply pipe 370 may be formed in a tubular shape to supply external fresh water to the pump unit 100.

On the other hand, the fresh water supply pipe 370 may be configured to supply the fresh water by partitioning the inside of the exterior 210 or the inner tube 220, the fresh water supply pipe 370 is formed in a tubular shape is one end of the fresh water supply pipe 370 The other end of the fresh water supply pipe 370 may be coupled to the distribution port 230 which will be described in more detail below in the pump unit 100. Can be.

At this time, of course, the fresh water supply pipe 370 may be installed with a valve for supplying or blocking fresh water.

As shown in FIG. 5 and FIG. 6, the multi-pipe 200 may include a distribution port 230. The distribution port 230 is a multi-pipe 200, that is, the inner tube 220 and the outer 210 is coupled to the pump unit 100 at the same time fresh water supplied from the fresh water supply pipe 370, and the inner tube 220 and the appearance The air passing through 210 can be distributed.

On the other hand, the distribution port 230 may be formed in any container shape of the container is upside down, the distribution port 230 covers the air discharge hole 133 formed in the frame 130 to seal the frame 130 Can be coupled to.

In addition, the exterior 210 may be coupled to a central portion of the upper portion of the distribution port 230, and the inner tube 220 inserted into the exterior 210 may be formed in the air discharge hole 133 formed in the frame 130. Can be combined.

In addition, the supply hole is coupled to the other end of the circulation pipe 140 so that the air supplied to the exterior 210 is introduced into the frame 130 through the circulation pipe 140 on the side of the distribution port 230 ( 231 may be formed.

In this case, when the plurality of circulation pipes 140 is provided, a plurality of supply holes 231 may be formed so that each circulation pipe 140 may be connected to each of the supply holes 231.

In addition, the distribution port 230 may be connected to the fresh water supply pipe 370 inserted into the exterior 210, a fresh water supply path 233 for supplying fresh water may be formed, the fresh water supply path 233 is a nozzle supply pipe ( 150 may be connected to supply fresh water supplied from the fresh water supply pipe 370 directly to the nozzle supply pipe 150 via the fresh water supply path 233.

In addition, a ring-shaped flange may be formed around the top and bottom of the distribution port 230, and the flange formed at the lower end of the distribution port 230 may be fastened to the frame 130 by a fastening member such as a bolt. The volleyball 230 may be coupled to the frame 130.

As shown in FIG. 6, the multi-pipe 200 may include an elastic coupling hole 250. The elastic coupling sphere 250 absorbs the shock applied to the exterior 210, for example, the driving shock of the pump unit 100 or the impact of the fluid discharged by the pump unit 100 to damage the multi-pipe 200. Can be prevented.

On the other hand, the elastic coupling sphere 250 may be provided between the distribution port 230 and the appearance 210, it is formed of a material having elasticity can absorb the impact.

Elastic coupling sphere 250 in the embodiment is formed of a corrugated tube, the outer surface is called a bellows, ring-shaped flanges are formed on the top and bottom of the elastic coupling sphere 250, each flange of the appearance 210 The elastic coupling sphere 250 is coupled between the exterior 210 and the distribution sphere 230 in a form that is coupled to the flange formed on the top and the flange formed on the top of the distribution port 230.

In addition, although not shown in the drawings, the elastic coupling sphere 250 is provided not only between the exterior 210 and the distribution port 230, but also between the frame 130 to which the inner tube 220 and the inner tube 220 are connected. It may be.

The multi pipe 200 may include a dust cover 270. The dust cover 270 may prevent foreign substances from flowing into portions partially exposed to the outside of the reservoir 300 (see FIGS. 1 and 3).

On the other hand, the dust cover 270 may be configured to cover the top of the exterior 210 and the inner tube 220 is spaced apart from the top of the exterior 210 and the inner tube 220, the appearance of the dust cover 270 May be coupled to the top of the 210.

As shown in Figure 7 and 8, the multi-tube 200 according to an embodiment of the present invention may include an elastic support 350. The elastic support unit 350 may elastically support the opposite end of the outer tube 210 that is coupled to the multi-pipe 200, that is, the frame 130, in the reservoir 300.

In the embodiment, the portion of the reservoir 300 in which the elastic support part 350 is installed is a lid 330 positioned at a vertical upper portion of the column pipe 310 in which the pump unit 100 is installed to seal the column pipe 310. It explains.

However, the portion in which the elastic support portion 350 is installed according to the type of the pump unit may be installed in various portions of the reservoir 300 in addition to the lid 330, and the portion in which the elastic support portion 350 is installed in the reservoir 300. It does not limit.

On the other hand, the lid 330 for sealing the column pipe 100 is formed with a hole 331, the exterior 210 through the hole 331, the exterior of the reservoir 300, that is, the outside of the lid 330 It may be configured to protrude.

The elastic support 350 may include a seating plate 351. The seating plate 351 is formed in a disk shape, the through hole is formed in the center so that the multi-pipe 200, more specifically, the exterior 210 through the through hole to be partially protruded to the outside of the through hole. Can be fitted.

In this case, the mounting plate 351 may be seated in the hole 331 formed in the lid 330.

The elastic support part 350 may include a fixing plate 353. The fixing plate 353 may fix the seating plate 351 to the reservoir 300, that is, the lid 330.

On the other hand, the fixing plate 353 may support the periphery of the mounting plate 351 and may be fixed to the lid 330 by a fastening member such as a bolt.

The elastic support part 350 may include an elastic seal 357. The elastic seal 357 can prevent the damage to the multi-pipe 200 by absorbing the shock transmitted to the multi-pipe 200, more specifically, the appearance 210.

On the other hand, the elastic seal 357 is formed in a ring shape can be seated in the through hole of the seating plate 351, the inner tube of the elastic seal 357 in the form of the appearance 210 is inserted into the multi-pipe 200. The lid 330 may be elastically supported.

The elastic seal 357 may be formed of, for example, a material having elastic force such as natural rubber, synthetic rubber, silicone, urethane, or the like.

The elastic support 350 may include a pressure ring 355. The pressure ring 355 secures the elastic seal 357 and at the same time generates an elastic deformation in the elastic seal 357, the adhesive force and the appearance 210 and the seating plate that the elastic seal 357 is in close contact with the appearance 210 The airtightness between the 351 and the elastic force supporting the appearance 210 can be improved.

On the other hand, the pressing ring 355 is formed in a ring-shaped plate may be installed on the upper portion of the seating plate 351, the exterior 210 is inserted into the center of the pressing ring 355, the pressing ring 355 The perimeter of the bolt may be fixed to the mounting plate 351 by a fastening member such as a bolt.

And, the bottom of the pressing ring 355 is formed with a pressing protrusion 356 protruding downward, the pressing projection 356 is formed in a position corresponding to the elastic seal 357 to seat the pressing ring 355 When fixed to the 351, the pressing protrusion 356 may be configured to press the elastic seal 357 to generate an elastic deformation in the elastic seal 357.

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

In the water pump having a multi pipe according to an embodiment of the present invention, the pump unit 100 is fixed to the column pipe 310 in such a manner that the outer surface of the casing 135 is fitted to the inner circumferential surface of the column pipe 310.

The pump unit 100 is connected to the pump unit 100 by integrating various cables 390 connected to the pump unit 100 outside the water storage tank 300 in the multi pipe 200.

In this case, the various cables 390 may be, for example, a power cable, a fixed cable, or the like, and the various cables 390 are inserted into the exterior 210, and the interior of the exterior 210 through the cable entry hole 211. It is inserted into and connected to the pump unit 100.

Then, the inner tube 220, and the fresh water supply pipe 370 is inserted into the interior 210, the exterior 210 and the inner tube 220 are connected to each other by the distribution port 230, the distribution port 230 And are connected to each other by the elastic coupling sphere 250 that can absorb the external shock.

On the other hand, the pump unit 100 is provided with a circulation pipe 140 for supplying the outside air supplied through the exterior 210 into the frame 130, the fresh water supply pipe inserted into the multi-pipe 200 ( A nozzle supply pipe 150 for supplying fresh water to the injection nozzle 151 provided in the casing 135 by receiving fresh water from 370 is installed.

At this time, the nozzle supply pipe 150 is connected to the fresh water supply path 233 is connected to the fresh water supply pipe 370 of the distribution port 230, the circulation pipe 140 is the outside air supplied through the exterior 210 It is connected to the supply hole 231 formed in the distribution port 230 to be supplied.

In addition, a portion of the lid 330 that seals the upper end of the water tank 300, more specifically, the column pipe 310, includes a multi-pipe 200, that is, an elastic support part 350 that elastically supports the exterior 210. Is located.

On the other hand, the elastic support 350 seats the seating plate 351 to the lid 330, the through-hole formed in the central portion of the seating plate 351, the multi-pipe 200 more specifically, the exterior 210 of the lid 330 Insert so that it partially protrudes to the outside.

At this time, the seating plate 351 is fixed to the lid 330 by a fixing plate 353 supporting the periphery of the seating plate 351, the elastic seal 357 is seated in the through hole in the seating plate 351 The exterior 210 is elastically supported.

Here, the elastic seal 357 is pressed by the pressing protrusion 356 of the pressure ring 355, a state in which elastic deformation occurs, that is, the elastic seal 357 is in close contact with the outer surface of the exterior 210 by elastic deformation. Is fixed.

In the submersible pump having a multi-pipe configured as described above, the pump unit 100 more specifically, when the driving unit 120 is driven, the impeller 110 rotates to store the fluid stored in the reservoir 300 in the column pipe 310. Discharge to the outside through.

Meanwhile, when the driving unit 120 is driven, the blowing fan 170 also rotates together with the impeller 110 to draw air from the lower portion of the driving unit 120 to the upper portion of the frame 130 in the frame 130 to drive the driving unit 120. Cool down.

At this time, the outside air of the reservoir 300 is introduced through the exterior 210 by the blowing fan 170, the air introduced into the exterior 210 is connected to the distribution port 230 through the distribution port 230. The lower portion of the frame 130 is supplied through the circulation pipe 140.

Then, the air supplied to the lower portion of the frame 130 is discharged to the air discharge hole 133 formed in the upper portion of the frame 130 via the drive unit 120, the air discharged through the air discharge hole 133 is the inner tube It is discharged to the outside of the reservoir 300 through the 220.

Here, the dust cover 270 is installed at the upper end of the inner tube 220 and the exterior 210 to prevent foreign substances from flowing into the inner tube and the exterior.

On the other hand, to perform a test operation when there is no fluid in the reservoir 300, or to remove the sludge fixed on the inner circumferential surface of the casing 135, the multi-pipe 200 in the fresh water supply facility located outside the reservoir 300, More specifically, fresh water is supplied through the fresh water supply pipe 370 inserted into the exterior 210.

The fresh water supplied through the fresh water supply pipe 370 is supplied to the nozzle supply pipe 150 through the fresh water supply path 233 of the distribution port 230, and the fresh water supplied to the nozzle supply pipe 150 is the injection nozzle 151. By spraying through), it is possible to remove the sludge fixed on the inner circumferential surface of the casing 135 and to perform the test operation even in the absence of fluid in the reservoir 300.

On the other hand, the exterior 210 of the multi-pipe 200 is supported by the elastic support 350 in the reservoir 300, the exterior 210 or the inner tube 220 is the elastic coupling sphere 250 in the pump unit 100 Since they are connected to each other, the vibration generated when the pump unit 100 is driven may be absorbed to prevent the inner tube 220 or the exterior 210 from being damaged by the vibration.

Accordingly, the submersible pump having a multi-pipe according to an embodiment of the present invention can prevent the cable 390 flexibly bent due to the flow of the discharged fluid to prevent disconnection due to fatigue accumulation.

In addition, since the various cables 390 are integrated and protected, the cable 390 may be prevented from being damaged and the turbulence of the fluid discharged by the pump unit 100 may be prevented, thereby improving the discharge amount.

In addition, since various cables 390 are integrated and connected to the pump unit 100, the installation cost and manufacturing cost of the submersible pump and the installation time can be greatly reduced.

In addition, the multi-pipe 200 is configured to pass the fresh water supply pipe 370 and the air can perform the cooling efficiency, the sludge removal function and the test operation of the water pump.

In addition, the dust cover 270 may be installed to prevent foreign substances from flowing into the inner tube 220 and the exterior 210.

In addition, it is possible to absorb the vibration applied to the multi-pipe 200 by the elastic support 350 and the elastic coupling sphere 250 to prevent damage caused by the vibration.

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: pump unit 110: impeller
120: drive unit 121: stator
123: rotor 125: axis of rotation
130: frame 133: air discharge hole
135: casing 136: inlet
137: discharge port 140: circulation tube
150: nozzle supply pipe 151: injection nozzle
170: blowing fan 200: multi tube
210: appearance 211: cable entry hole
220: inner tube 230: distribution port
231: supply hole 233: fresh water supply
250: elastic coupling sphere 270: dust cover
300: reservoir 310: column pipe
330: lid 331: hole
350: elastic support 351: seating plate
353: fixed plate 355: pressure ring
356: pressure projection 357: elastic seal
370: fresh water supply pipe 390: cable

Claims (9)

An impeller for sucking and discharging fluid, a driving unit for rotating the impeller, a pump unit including a frame sealing the driving unit, and various cables connected to the pump unit outside the reservoir in which the pump unit is installed An underwater pump having a multi pipe including a multi pipe,
The multi pipe
Appearance extending from the top of the pump unit to the outside of the reservoir and the air is supplied to the frame at the same time the various cables are inserted,
An inner tube which partitions the inside of the exterior to prevent mixing with the air passing through the exterior, and discharges the air supplied to the frame;
A distribution port for coupling the appearance to the frame, and
It includes an elastic coupling sphere for elastically coupling the appearance in the distribution port to absorb the impact applied to the appearance,
The pump unit
A circulation pipe for supplying air from the frame to the lower part of the driving part,
The distribution port
The circulation pipe is connected to the submersible pump having a multi-pipe, characterized in that the supply hole for supplying the air supplied through the outer pipe is formed. The method of claim 1,
The multi pipe
An underwater pump having a multi-pipe, characterized in that it comprises an elastic support for elastically supporting the multi-pipe in the water tank to absorb the impact applied to the multi-pipe. The method of claim 2,
The elastic support portion
The mounting plate is formed in the center of the through-hole in which the multi-tube is inserted, which is seated in the reservoir,
A fixing plate for fixing the seating plate to the water tank;
An elastic seal positioned at an inner circumference of the through hole to elastically support the appearance in the seating plate;
Submersible pump having a multi-pipe, characterized in that it comprises a pressing ring for pressing the elastic seal elastically deformed so that the elastic seal is in close contact with the appearance. The method of claim 1,
The multi pipe
Submersible pump having a multi-pipe further comprises a dust cover for preventing the introduction of foreign matter into the outer tube and the outer tube exposed to the outside of the reservoir. delete The method of claim 1,
The driving unit
Submersible pump having a multi-pipe, characterized in that it comprises a blowing fan for circulating the air inside the frame. The method of claim 1,
The multi pipe
It further comprises a fresh water supply pipe for supplying fresh water by partitioning the exterior or the inside of the inner tube,
The pump unit
The multi-pipe further comprises a nozzle supply pipe connected to the fresh water supply pipe to supply fresh water to the portion where the impeller is located, and a spray nozzle for spraying fresh water supplied through the nozzle supply pipe to the impeller to remove sludge. Submersible pump with. The method of claim 1,
The elastic coupling sphere
Submersible pump having a multi-pipe, characterized in that the corrugated pipe having an elastic force. The method of claim 1,
The appearance is
Submersible pump having a multi-pipe, characterized in that the cable inlet is formed that the various cables are inserted into the interior of the exterior through the side of the exterior.

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