Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/60—Mounting; Assembling; Disassembling
  • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
  • F04D29/606—Mounting in cavities
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
  • F04D1/04—Helico-centrifugal pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D13/00—Pumping installations or systems
  • F04D13/02—Units comprising pumps and their driving means
  • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
  • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
  • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D3/00—Axial-flow pumps
  • F04D3/005—Axial-flow pumps with a conventional single stage rotor

Definitions

• the present invention relates to a submersible pump, and in particular, to an improvement of a submersible pump composed of an axial flow type or a mixed flow type.
• FIG. 1 shows a cross-sectional structure of a conventional axial flow type submersible pump.
• a dive motor 1 is disposed in a suction fitting 2.
• a front guide vane 3, an impeller 4 and a rear guide vane 5 are sequentially provided.
• a discharge path is formed above the rear guide vane 5.
• This discharge path is typically formed by a discharge pipe (not shown) extending relatively upward from the bottom of the tank to which the submersible pump is attached.
• a submersible pump is connected directly to the lower end of the discharge pipe.
• the curved pipe 6 is connected to the submersible pump.
• a pipe fitting 7 that connects to the discharge pipe is fixed, and the submersible pump can be automatically connected to the connection metal 7 through the curved pipe 6.
• a flow is formed on a cylindrical surface that is concentric with the shaft 9 of the dive motor 1
• the present invention overcomes the various disadvantages described above encountered with axial or mixed flow submersible pumps.
• the invention is, in summary, a pump casing. Is formed into a curved pipe, and a single piece is formed integrally with the inside.
• the pump casing has first and second ends respectively defining first and second openings.
• the motor housing is formed concentrically with the central axis of the first opening of the pump casing and on the opposite side of the first opening from the tube wall of the pump casing. It has an end face that is open through the casing and outside the pump casing.
• the motor storage is provided in the motor casing so as to be arranged concentrically with the center axis of the shaft storage.
• the foot has an extension that extends toward the first opening side of the pump casing. Outside this first opening, a guide vane device, an impeller and a suction fitting are sequentially mounted.
• the inboard blade device is installed over the extension of the shaft of the motor.
• the suction fitting defines the suction port for this pump.
• a lid member is detachably attached to the end surface of the motor storage that is open outside the pump casing.
• a cable is provided through the lid member, and electric power is supplied to the motor hole by a conductive means including the cable.
• the discharge port of the pump casing is configured to be able to be automatically connected to a connection fitting serving as a start end of the discharge path.
• the pump casing is formed in a curved tubular shape, and the positional relationship between the motor casing and the pump casing is different. ! ),
• the distance between the operating part of the pump including the motor and the impeller, and the center ⁇ of the connection part on the discharge side of the pump can be shortened.
• the overall length of the pump is reduced. Therefore, no special force is required at the connection part on the discharge side of the pump, and reliable automatic connection is possible.
• the cable is introduced through a lid member attached to the end face of the motor storage, the cable is protected and maintenance is facilitated. This is advantageous.
• Fig. 1 shows the cross-sectional structure of a conventional axial-flow submersible pump.
• Fig. 2 shows one embodiment of the present invention, and shows the cross-sectional structure of an automatically connected axial-flow submersible pump.
• FIG. 3 shows another embodiment of the present invention, and shows a cross-sectional structure of an automatically connected mixed-flow underwater pump.
• the pump casing 11 is formed on the side of the pump casing 11 formed as a whole with a curved pipe.
• a flange 14 is formed at the side end 13 defining the opening 12.
• a motor casing 16 is formed integrally with the pump casing 11, similarly to the axis.
• the motor casing 16 is opened to the outside of the pump casing 11 through the pipe wall of the pump casing 11 on the side opposite to the lower opening 15. It has an end face 17.
• the motor storage 18 is provided in the motor storage 16 in a state where the shaft 19 is coaxially arranged with the center axis of the lower opening 15.
• the shaft 19 is provided with an extended shaft extending downward so as to also serve as a pump axis.
• the lower end of the shaft 19 is rotated by two bearings 21 1 and 22 provided in a bearing box 20 fixed to the lower end of the motor storage 16. Supported as possible.
• the top of the shaft 19 is the end face of the motor storage 6
• a lid 26 is removably mounted above the bearing box 23.
• the cover 27 is introduced through the cover 26, and the cap 27 is supported on the cover 26 in a state where it is kept watertight.
• the lower end 28 defining the lower opening 15 of the pump casing 11 and the lower surface of the bearing housing 20 are provided with rear guide vanes.
• the rear guide blade unit 29 is supported by a plurality of blade members 30 provided so as to protrude from the inner wall of the rear guide blade unit 29].
• the partition wall 31 and the lower surface of the bearing box 20 form an oil leakage chamber 32.
• the lubricating oil chamber 32 allows the lubricant 33 to receive the shaft 19 passing through this part, allowing the lubricant to leak.
• Axial impeller 3 4 closes to 3
• a suction fitting 35 for defining suction suction is fixed to the lower part of the rear guide blade device 29.
• the Sakomi fitting 35 has a plurality of front guide vanes 3 6 • a: b_a facing the impeller 34.
• a strainer 37 with a lattice opening on its circumference and bottom is attached.
• a guide fitting 38 is fixed.
• a discharge pipe 40 having a curved pipe is fixed to a stepped floor 39 formed at the bottom of the tank to which this submersible pump is attached.
• the upward opening of the discharge fitting 40 is connected to a discharge pipe (not shown).
• the semi-circular engagement portion 4 for engaging the guide fitting 42 with the guide fitting 38 to guide the fitting with guide 38 vertically along the guide pipe 42 is provided. 3 and 4 4 are formed in two steps above and below.
• the connecting fitting 38 with a guide is also provided with a connecting claw 45.
• the connecting claw 45 can be engaged with a vertical flange 46 formed on the discharge fitting 40. This engagement takes place by means of a wedge effect, whereby the vertical flange 46 and the pump casing 11.
• An inclined portion 47 is formed on the back surface of the vertical flange 46 so that the connection with the flange 14 can be firmly achieved.
• a pair of suspension rings 48 are provided on the upper surface of the lid fitting 26 so as to face each other.
• the forked end of a chain 49 suspended from an elevator (not shown) provided above the tank is connected to the suspension ring 48.
• the underwater pump shown in Fig. 2 is a chain
• OMPI '' It is lowered from the top of the tank to a predetermined position at the bottom of the tank in a suspended state. At this time, while being guided by the engagement between the semicircular engagement portions 43 and 44 and the guide tube 42, the flanges 14 and 46 and the flanges 46 are guided. It becomes prone to face each other. Here, the connecting claw 45 and the inclined portion 47 of the flange 46 are engaged, and the submersible pump is moved relative to the discharge fitting 40 fixed to the stepped floor 39. And the underwater pump is removed.) # Injury is completed. In other words, the underwater pump was automatically connected.
• This pump is operated in the above-mentioned mounting state.
• the center line C in the connecting portion between the pump casing 11 and the discharge fitting 40 of each part of the motor hole 18 and the impeller 34 that causes vibrations is formed.
• the distance from 1 is kept relatively short. That is, this distance is shortened to the extent that the motor hole 18 is located on an extension of the center line C 1. Therefore, the load associated with the vibration applied to the connecting portion is extremely small as compared with the conventional one, and therefore, the water leakage due to the sudden movement of the connecting portion due to the vibration is also eliminated. Also, no special reinforcement at the connection is required.
• the wire connection portion 25 can be provided outside the pump casing 11, and the force can be easily accessed. As a result, the cable 27 is protected, as well as the connections and inspections.
• the conventional one shown in Fig. 1 was slightly unstable because the chain was attached to the middle part of a long object vertically.
• the chain 49 is attached to the top of the short object in the vertical direction (the upper surface of the lid 26), so that the stability is good.
• FIG. 3 shows an embodiment of a mixed flow submersible pump. Only the differences from the axial flow type submersible pump shown in Fig. 2 will be explained.
• the guide blade device 129/9 is an inner wall of the guide blade device]).
• a plurality of blade members 130 protrudingly provided supports the partition wall 131 at the center.
• the lubricating oil chamber 132 is formed by the partition wall 13 1 and the bearing housing 1 20 ⁇ lower surface.
• the lubricating oil chamber 132 enables lubrication of the mechanism 13 which receives the motor shaft 1 19.
• a mixed flow impeller 134 is attached to the lower end of the shaft 1 19.
• the lower part of this impeller 13 4 is connected to the lower end of the guide impeller device 12 9) with the impeller 13 4 enclosed in a prone position.
• the present invention is not limited to the automatic connection type submersible pump shown in FIGS. 2 and 3, and can be used for other types of submersible pumps.
• the OMP in Fig. 2 By removing the connecting bracket 38 with a guide, it is possible to use it by connecting it to the discharge pipe by other means, or to use it by directly connecting it to another device.

Landscapes

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

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15105029

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (5)

Citations (1)

Family Cites Families (9)

• 1980
  • 1980-09-24 JP JP55133449A patent/JPS5759097A/ja active Granted
• 1981
  • 1981-09-04 WO PCT/JP1981/000216 patent/WO1982001039A1/ja active Application Filing
  • 1981-09-04 DE DE19813152367 patent/DE3152367C2/de not_active Expired
  • 1981-09-04 AU AU75362/81A patent/AU541379B2/en not_active Ceased
  • 1981-09-21 NZ NZ198423A patent/NZ198423A/en unknown

Patent Citations (1)

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