KR20090069467A - A underwater pump - Google Patents

Abstract

An underwater pump is provided to improve lubricating performance and water cooling effect by making a water screen between the rotor holder and the rotor. An underwater pump(1) comprises a motor unit(1-2) rotating a rotor(50) to generate power, and a pump unit(1-1) which inhales and discharges external water by rotating an impeller with the generated power. The rotor is installed inside a rotor holder(40). The impeller is installed inside an impeller housing(3). The impeller housing and a rotor housing(4) are formed on both sides of a partition wall. The water flowing in and out of the pump unit by the motor unit is guided into the motor unit through a circulation unit to form a water screen between the rotor holder and the rotor.

Description

Submersible motor pump {A UNDERWATER PUMP}

The present invention relates to an underwater motor pump that is stored in water (fluid) and used for drainage or pumping.

To explain this in more detail, the motor unit is formed by installing the rotor as a shaft inside the rotor holder, and the pump unit is formed by mounting the impeller on the rotating shaft of the rotor which is drawn out by the impeller housing, but the impeller housing and Rota housing is formed integrally, and the pump and motor parts are assembled on both sides of the dividing wall, respectively, and the water (fluid) flowing into the pump part by the operation of the motor is introduced into the motor part by the distribution means and is fixed A water film phenomenon occurs between the holder and the rotating rotor, and the water film formed between the rotor and the rotor lubricates, maintains concentricity of the rotor (rota), and dissipates vibration, thereby providing a water cooling effect. It is possible to obtain a shaft, the shaft of the pump portion and the shaft of the motor portion and the bushing for supporting the shaft is formed of a ceramic of the same material It is to provide a submersible motor pump that can increase the strength to reduce wear to extend the life and to suppress the generation of heat.

In general, the submersible motor pump is used for pumping or draining the entire pump in water (fluid), it is used to pump water (fluid), supply water or drugs, transfer the liquid to another process, etc. It is used in various fields.

As a conventional submersible motor pump, domestic public utility model publication No. 20-1985-4075, public utility model publication No. 20-1985-5036, patent registration No. 10-137657 and the like are known.

These conventional submersible motor pumps are formed such that the motor part and the pump part are integrally formed or separated to be separated / combined to suck and discharge water (fluid) while the impeller of the pump rotates by the operation of the motor part. will be.

However, they are provided with a rotor (rotor) and a stator (magnetic core) of the motor part together inside the motor casing, and the motor part and the pump part are separated from each other to be sealed, so that water pumped from the pump part flows into the motor part. It becomes impossible.

Therefore, the motor part has to apply lubricant between the rotor (rotor) and the stator (magnetic core), and when the motor part is repaired, there is a problem that the lubricant leaks to the outside and contaminates the rotor. When used for a long period of time, the bearing is worn out, the concentricity can not be achieved accurately, as well as there is a problem that the vibration and noise occurs.

In addition, the heat generated by the operation of the motor unit is indirectly cooled by water (fluid) that is transferred to the motor casing and is in contact with the outside (outer surface) of the motor casing, thereby lowering the cooling efficiency. When is increased, the motor unit has a problem in that the performance is lowered to decrease the efficiency of the pump.

The present invention is to provide a submersible motor pump to be used in water.

According to the present invention, a rotor is formed inside the rotor holder as a shaft to form a motor part, and an impeller is mounted on a rotating shaft of the rotor drawn out by the impeller housing to form a pump unit, but impeller housing and rota housing are provided on both sides of the partition wall. The pump unit and the motor unit are formed by assembling them on both sides of the dividing wall, respectively, and the water (fluid) flowing into the pump unit by the operation of the motor unit flows into the motor unit by the distribution means and is fixed with the rota holder. The purpose of the present invention is to provide a submersible motor pump in which water film phenomenon occurs between Rota.

Another object of the present invention, the water film formed between the rotor and the rotor lubrication action, while maintaining the concentricity of the rotor (rota) while also extinguish the vibration, the water-cooled water pump can be obtained I'm trying to provide.

Still another object of the present invention is to form an inlet in the impeller housing and to form an outlet at the bottom of the rotor holder, so that the water sucked into the impeller housing is discharged to the outlet of the rotor holder after passing through the rotor (rota), The purpose of the present invention is to provide a submersible motor pump that can eliminate the concentricity and vibration of the rotor and the rotor (rota) by the water film formed between the rotor and the rotor and further improve the water cooling effect.

Still another object of the present invention is to form a shaft that combines the shaft of the pump portion and the shaft of the motor portion and the bushing for supporting the shaft with ceramic of the same material to increase the strength to reduce wear and extend the life and to generate heat. It is to provide a submersible motor pump that can be suppressed.

The above and other objects of the present invention,

The motor unit 1-2 is formed to rotate the rotor 50 installed in the rotor holder 40 to generate power, and the impeller installed in the impeller housing 3 by the power in the motor unit 1-2. In the submersible motor pump formed of a pump portion (1-1) for sucking and discharging external water while the 70 is rotated;

The impeller housing 3 and the rotor housing 4 are integrally formed on both sides of the dividing wall 5 to assemble the pump unit 1-1 and the motor unit 1-2 on both sides of the dividing wall 5, respectively. Formed by;

Water (fluid) flowing into / out of the pump unit 1-1 by the operation of the motor unit 1-2 flows into the inside of the motor unit 1-2 by the distribution means and is fixed to the rota holder 40 It is achieved by the submersible motor pump (1) characterized in that it is formed, including; and the water film phenomenon is generated between the rotating rotor (50).

In the above, the water flowing into / out of the pump unit 1-1 is introduced into the motor unit 1-2 by the distribution means and is fixed between the rota holder 40 and the rotating rotor 50. Submersible pumps for the development of water film phenomenon;

The impeller rotor housing 2 is integrally formed by forming the impeller housing 3 and the rotor housing 4 on the outer circumferential sides of the partition wall 5 in which the communication hole 6 is formed in the center. ;

A rota holder 40 is mounted in the rotatable mounting chamber 20 formed in the rota housing 4;

A rotor bundle 50 fitted to the shaft 55 and a coil bundle 51 provided with the magnetic core 52, respectively, in the interior and the exterior of the rotor holder 40;

The shaft 55 inserted into and coupled to the center of the rota 50 mounted inside the rota holder 40 has bored the distribution hole 57 in the longitudinal center line;

A bushing 65 is fitted to the shaft 55 at both sides of the rotor 50, and each bushing 65 is loaded into the bushing holder 60;

At the periphery of the bushing holder 60 in which the bushing 65 is loaded, the distribution holes 64 are formed at regular intervals;

An impeller 70 is mounted at the tip of the shaft 55 which is drawn out to the impeller chamber 10 of the pump housing 3 through the communication hole 6 of the dividing wall 5, and on the front surface of the pump housing 3. It is equipped with an impeller housing cover 30 is formed with a suction pipe 35 in the center;

The shaft 55 mounted on the rota 50 and the bushing 65 fitted to the shaft 55 and loaded on the bushing holder 60 are formed of ceramic.

The submersible motor pump according to the present invention, while forming a motor portion by installing the rotor in the rotor shaft inside the rotor, and the impeller is mounted on the rotating shaft of the rotor drawn out by the impeller housing to form a pump unit, the motor unit and the pump unit housing Is formed by assembling the motor part and the pump part on the front and the rear of the housing, respectively, and the water (fluid) flowing into the pump part is introduced into the motor part and fixed with the rota holder and the rotating rotor. Mening phenomenon occurred in between,

The water film formed between the rotor and the rotor lubricates and maintains concentricity of the rotor (rota), while also eliminating vibration and obtaining a water cooling effect.

In the impeller housing, an inlet is formed and an outlet is formed at the bottom of the rotor holder so that water sucked into the impeller housing is discharged to the outlet of the rotor holder after passing through the rotor (rotator), thereby being formed between the rotor and the rotor. The water film can eliminate the lubrication action and the concentricity and vibration of the rotor (rotor) and further improve the water-cooling effect. By forming it to strengthen the strength to reduce wear to extend the life and to suppress the generation of heat.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 8C show a specific embodiment of the submersible motor pump 1 according to the present invention, FIG. 1 is a cross-sectional view showing the overall structure of the submersible motor pump 1 according to the present invention.

2A to 2C, 3A to 3C, 4A and 4B, 5A and 5B, 6A and 6B, 7A to 7C, 8A to 8C, 9A and 9B are embodiments of the present invention. Underwater motor pump (1) according to the impeller rotor housing (2), impeller housing cover (30), rotor holder (40), rotor holder bracket (45), shaft (55), bushing holder (60), impeller (70) And bushing 65, respectively, are examples.

Submersible motor pump 1 according to the present invention,

Motor part 1-2 which generates power by rotating the rotor 50 installed in the rotor holder 40, and impeller 70 provided in the impeller housing 3 by the power in motor part 1-2. Rotation) is formed by the pump unit (1-1) for sucking and discharging external water, the impeller housing (3) and the rota housing (4) integrally formed on both sides of the partition wall (5). 5) the pump parts 1-1 and the motor parts 1-2 are assembled on both sides; Water (fluid) flowing into / out of the pump unit 1-1 by the operation of the motor unit 1-2 flows into the inside of the motor unit 1-2 by the distribution means and is fixed to the rota holder 40 ) And the rotatable phenomenon occurs between the rotating rotor 50; as a well-known feature.

Submersible motor pump 1 according to the present invention, including the impeller rotor housing 2, the impeller housing cover 30 and the rota holder 40, the rota holder bracket 45, the shaft 55 and the bushing hole (60) ) And an impeller 70 and a bushing 65.

In the impeller rotor housing (2) as shown in Figures 2a to 2c, to form a partition wall 5 in the shape of a disk, but the center of the partition wall 5 drilled through the communication hole (6), the partition wall On the outer circumferential side of (5), a short impeller housing (3) and a long rotor housing (4) are integrally formed so that the impeller chamber (10) and the rotor mounting chamber (20) are provided on both sides of the partition wall (5). To form.

A discharge pipe 15 is integrally formed on the outer circumference of the impeller housing 3 to allow the discharge hole 16 to communicate with the impeller chamber 10, and a plurality of mounting holes 13 are drilled on the outer surface of the impeller housing 3. The mounting piece 12 was formed so that the impeller housing cover 30 described later can be mounted.

The impeller housing cover 30 mounted at the tip of the impeller housing 3 has the housing cover plate 31 formed in the same shape as the partition wall 5, as illustrated in FIGS. 3A to 3C. The outer circumference of the plate 31 is formed in one direction to the outer dolme 33 so that the suction chamber 34 is formed, the suction tube 35 in the center of the housing cover plate 31 in the opposite direction to the outer dolce 33 The suction hole 35-1 of the suction pipe 35 communicates with the suction chamber 34.

In particular, the impeller housing (3) and the impeller housing cover (30) to form the discharge induction extension (11, 32) in the same plane as the partition wall (5) and the housing cover plate 31 respectively to the impeller chamber (10) The incoming water was guided to the outside, and the discharge pipe 15 was integrally formed at the tip of the discharge induction extension unit 11.

An impeller cover housing cover 30 is coupled to the front face of the impeller housing 3 forming the impeller rotor housing 2, and the outer dol 33 is connected to the front face of the impeller housing 3. Each of the mountings in the state in which the discharge induction extension part 32 and the mounting piece 36 of the impeller cover housing cover 30 are aligned with the discharge induction extension part 11 and the mounting piece 12 of the impeller housing 3. A bolt (not specifically shown) is screwed into the mounting holes 36-1 and 13 of the pieces 36 and 12 to be integrally fastened.

In the impeller housing 10 formed in the impeller housing 3 in the impeller housing 3 and the impeller cover housing cover 30 which are integrally fastened as described above, the partition wall as illustrated in FIGS. 7A to 7C ( The impeller 70 was attached to the tip of the shaft 55 which is drawn out to the impeller chamber 10 of the pump housing 3 through the communication hole 6 of 5).

The impeller 70 mounted on the impeller chamber 10 of the impeller housing 3 has a shaft 55 integrally formed with a shaft tube 72 having a shaft hole 72-1 formed in the center of the impeller disc 71. The front end of the shaft hole (72-1) was inserted and mounted, the outer side of the shaft tube (72) was formed a plurality of wings 75 at regular intervals, the upper surface of each of the wings 75, the curved concave surface (76) It was formed to be able to guide the flow of the fluid smoothly.

In the rotatable mounting chamber 20, the inner wall of the annular dolce 21 and the outer annular dolce 22 larger than the communication hole 6 are formed in the partition wall 5, and the mounting hole 24 is formed on the outer circumference of the outer annular dolce 22. ) Was formed integrally formed with a mounting piece 23, the outer annulus 22 to be mounted on the rota holder (40).

Rota holder 40 mounted on the outer annular dolbe 22 is formed integrally with the flange 42 at the inlet periphery of the holder housing 41 formed in a cylindrical basket shape, as illustrated in FIGS. 4A and 4B. In the flange 42, a plurality of mounting holes 43 were drilled on the same line as the mounting holes 24 of the outer annular dome 22. As shown in FIG.

Attach the rotor holder 40 and the rotor holder bracket 45 to the outer annulus 22 by fastening bolts (not shown in detail) while the rotor holder bracket 45 is in contact with the outer surface of the flange 42. I did it.

As illustrated in FIGS. 5A and 5B, the rota holder bracket 45 has a bracket ring plate 46 formed therein so as to form a space 47 therein, and a plurality of bracket ring plates 46 are mounted. The ball 48 was drilled on the same line as the mounting hole 24 of the outer annulus 22.

As shown in FIG. 1, the rotor 50 and the magnetic core 52 fitted to the shaft 55 are disposed inside and outside the rotor holder 40 mounted on the rotor mounting chamber 20 of the rotor housing 4. The coil bundle 51 provided was separately mounted and the coil bundle 51 provided with the magnetic core 52 is protected by the rotor housing 4.

In particular, the shaft 55 inserted into and coupled to the center of the rota 50 mounted inside the rota holder 40 has a recess 56 in the center of the upper surface, as illustrated in FIGS. 6A and 6B. It was formed so as to, through the distribution hole 57 in the longitudinal direction inside the center of the groove (56).

The rotor 50 is mounted on the rota holder 40 mounted in the rotor mounting chamber 20 of the rota housing 4, but as illustrated in FIG. 1, the shaft 55 formed in the center of the rotor 50 is made of ceramic. ), And the bushings 65 formed of ceramics were fitted to the shafts 55 at both sides of the rotor 50.

Each bushing 65 is formed in a ring shape so that the shaft hole 66 is formed in the center, as illustrated in FIGS. 9A and 9B, and the bushing holder 60 loaded at the upper and lower ends of the rota holder 40. Was mounted in the bushing loading chamber 62 of the.

The bushing holder 60 in which the bushing 65 is loaded allows the shaft 55 to be inserted through the shaft hole 63 at the center thereof, and water (fluid) is formed by drilling the distribution hole 64 at regular intervals. Distribution was allowed.

Hereinafter, the operation relationship of the submersible motor pump 1 according to the present invention.

When power is supplied to the coil bundle 51 including the magnetic core 52, the rotor 50 rotates, and the impeller 70 together with the shaft 55 on which the bushing 65 is supported by the bushing holder 60. ) Will rotate.

When the impeller 70 rotates, external water is forced into the impeller chamber 10 through the suction hole 35-1 of the suction pipe 35 formed in the impeller housing cover 30, and forced into the impeller chamber 10. The suctioned water is discharged through the discharge hole 16 of the discharge pipe 15 integrally formed on the outer circumference while being guided to the discharge induction extension parts 11 and 32 of the impeller housing 3 and the impeller housing cover 30. It is supplied to the next process through a hose (not specifically shown) coupled to the discharge pipe (15).

As the water is pumped out by the rotation of the impeller 70 as described above, a part of the water sucked into the impeller chamber 10 flows into the distribution hole 57 from the groove 56 of the shaft 55 and is a lower bushing hole. The other part of the water leaked into the 60 and introduced into the rotor holder 40 and sucked into the impeller chamber 10 passes through the communication hole 6 of the dividing wall 5 to the inside of the rotor 40. It flows in and penetrates between the bushing 65 and the bushing loading chamber 62 of the bushing holder 60.

Water flowing into the rotor holder 40 penetrates between the bushing 65 and the bushing chamber 62 of the bushing holder 60 to form a water film, and the inner circumference of the holder housing 41 and the rotor ( It penetrates into the outer periphery of 50) to form a water film.

As such, the water flowing into the rotor holder 40 penetrates between the bushing 65 and the bushing chamber 62 of the bushing holder 60, the inner periphery of the holder housing 41, and the rotor. Penetrating between the outer periphery of 50, the water film is lubricated so that the rota 50 can rotate smoothly, and maintains the power source so that the rota 50 can rotate on the correct center line.

In addition, the water flowing into the holder housing 41 is circulated by the operation of the impeller 70, thereby cooling (water cooling) the heat generated by the coil bundle 51 and the rotor 50. The internal cooling effect of the can be greatly improved.

In particular, the submersible motor pump 1 according to the present invention, since the shaft 55, which serves as the shaft of the pump portion and the shaft of the motor portion, and the bushing 65 for supporting the shaft 55 is formed of a ceramic of the same material, the strength It is possible to reinforce, to reduce wear and extend life, and to suppress the generation of heat.

While the invention has been described and illustrated only with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made within the spirit and scope of the invention, and such modifications and variations are within the scope of the appended claims. It is natural.

1 is a cross-sectional view showing the structure of the submersible motor pump according to the present invention.

Figures 2a to 2c is an exemplary view showing an extractor impeller rotor housing in the submersible motor pump according to the present invention.

Figures 3a to 3c is an exemplary view showing an extractor impeller housing cover in the submersible motor pump according to the present invention.

Figures 4a and 4b and 5a and 5b is an exemplary view showing an extract of the rota holder and the rota holder bracket in the submersible motor pump according to the present invention, respectively.

6a and 6b is an exemplary view showing an extract of the shaft in the submersible motor pump according to the present invention.

7a to 7c and 8a to 8c and 9a and 9b are exemplary views showing the bushing holder, the impeller and the bushing in the submersible motor pump according to the present invention, respectively.

Explanation of symbols on the main parts of the drawings

1: Submersible motor pump 1-1: Pump part 1-2: Motor part

2: impeller rotor housing 3: impeller housing 4: rotor housing

10: impeller chamber 20: rotor mounting chamber 30: impeller housing cover

40: Rota Hold 45: Rota Hold Bracket 50: Rota

55: shaft 60: bushing holder 70: impeller

Claims (9)

The motor unit 1-2 is formed to rotate the rotor 50 installed in the rotor holder 40 to generate power, and the impeller installed in the impeller housing 3 by the power in the motor unit 1-2. In the submersible motor pump formed of a pump portion (1-1) for sucking and discharging external water while the 70 is rotated; The impeller housing 3 and the rotor housing 4 are integrally formed on both sides of the dividing wall 5 to assemble the pump unit 1-1 and the motor unit 1-2 on both sides of the dividing wall 5, respectively. Formed by; Water (fluid) flowing into / out of the pump unit 1-1 by the operation of the motor unit 1-2 flows into the inside of the motor unit 1-2 by the distribution means and is fixed to the rota holder 40 Submerged motor) between the rotating and the rotating rotor (50); characterized in that it is formed, including. The water flowing into and out of the pump unit 1-1 is introduced into the motor unit 1-2 by a distribution means, and the rota holder 40 and the rotating rotor 50 are fixed to the pump unit 1-1. Submersible pump is to occur between the water film phenomenon; The impeller rotor housing 2 is integrally formed by forming the impeller housing 3 and the rotor housing 4 on the outer circumferential sides of the partition wall 5 in which the communication hole 6 is formed in the center. ; An impeller housing cover 30 is mounted at the tip of the impeller housing 3, and a rotor holder 40 is mounted in the rotor mounting chamber 20 formed in the rotor housing 4; A rotor bundle 50 fitted to the shaft 55 and a coil bundle 51 provided with the magnetic core 52, respectively, in the interior and the exterior of the rotor holder 40; The shaft 55 inserted into and coupled to the center of the rota 50 mounted inside the rota holder 40 has bored the distribution hole 57 in the longitudinal center line; A bushing 65 is fitted to the shaft 55 at both sides of the rotor 50, and each bushing 65 is loaded into the bushing holder 60; At the periphery of the bushing holder 60 in which the bushing 65 is loaded, the distribution holes 64 are formed at regular intervals; An impeller 70 is mounted at the tip of the shaft 55 which is drawn out to the impeller chamber 10 of the pump housing 3 through the communication hole 6 of the dividing wall 5, and on the front surface of the pump housing 3. Submersible motor pump, characterized in that formed; including an impeller housing cover formed with a suction pipe (35) in the center. 3. The shaft of claim 2, wherein the shaft 55 is mounted to the rotor 50, and the bushing 65 fitted to the shaft 55 and loaded into the bushing holder 60; Submersible motor pump comprising a; formed of a ceramic. The impeller rotor housing (2) according to claim 2; Short impeller housings 3 and long rota housings 4 are integrally formed on both outer circumferential sides of the dividing wall 5 with the communication hole 5 in the center, so that the impeller chamber is formed on both sides of the dividing wall 5. (10) and the rotor mounting chamber 20 to be formed; An outer periphery of the impeller housing 3 to form an exhaust pipe 15 integrally so that the discharge hole 16 communicates with the impeller chamber 10; An impeller housing cover 30 is formed on the outer circumference of the impeller housing 3 by forming a plurality of mounting pieces 12 through which the mounting holes 13 are drilled; In the rotatable mounting chamber 20, the inner wall of the annular annulus 21 and the outer annular annulus 22 larger than the communication hole 6 are formed in the partition wall 5, and the mounting hole 24 is formed on the outer periphery of the outer annular annulus 22. Underwater motor pump, characterized in that formed; including; integrally formed with a mounting piece (23) perforated. The method according to claim 2, Impeller housing cover (30) mounted to the tip of the impeller housing (3); The housing cover plate 31 is formed in the same shape as that of the dividing wall 5; The outer circumference 33 of the housing cover plate 31 is formed in one direction so that the suction chamber 34 is formed; In the center of the housing cover plate 31 to form a suction pipe 35 in the direction opposite to the outer doltte 33 so that the suction hole 35-1 of the suction pipe 35 communicates with the suction chamber 34; Submersible motor pump, characterized in that formed. The impeller (70) mounted to the impeller chamber (10) of the impeller housing (3); In the center of the impeller disc 71, the shaft tube 72 is formed integrally formed with the shaft hole 72-1, and the front end of the shaft 55 is inserted into the shaft hole 72-1. An outer side of the shaft tube 72 having a plurality of wings 75 formed at regular intervals; Submerged motor pump, characterized in that it comprises a; formed a curved concave surface (76) at the outer end of the upper surface of each wing (75). The impeller housing (3) and the impeller housing cover (30) according to claim 2 or 5; The discharge induction extension parts 11 and 32 are further formed in the same plane as the dividing wall 5 and the housing cover plate 31, respectively, and the discharge pipe 15 is integrally formed at the distal end of the discharge induction extension part 11. Submersible motor pump characterized in that it comprises a. The shaft 55 of claim 1, wherein the shaft 55 is inserted into and coupled to the center of the rota 50 mounted inside the rota holder 40; Underwater motor characterized in that it comprises a further formed in the center of the upper groove 56 to communicate with the outside, the inside of the through hole 57 in the longitudinal direction from the center of the groove 56; Pump. The bushing holder (60) of claim 1, wherein the bushing holder (60) is loaded; Underwater motor pump characterized in that it comprises a shaft (63) in the center to insert the shaft (55), at the periphery of the distribution hole (64) to allow water to flow through; .

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