JP4610321B2 - Unit type hollow shaft pump - Google Patents

Description

  The present invention relates to a unit type hollow shaft pump.

  The conventional hollow shaft pump is configured in such a manner that the liquid feeding member having the liquid transfer means is integrally coupled with the suction cover and the discharge cover, and each of the pumps is suitable for the properties of the pumped material at the time of use. It has a structure in which component members cannot be replaced freely. Further, the open end of the hollow shaft provided with the liquid feeding blade is extended longer than the end face of the stator, and the pump cannot be configured to have a short overall length (see, for example, Patent Document 1).

The conventional hollow shaft pump as described above does not simply mean that the entire length of the pump itself cannot be shortened. When connecting multiple units in series to increase the lift, the pumping members cannot be connected directly, but are connected via the suction cover and discharge cover, so the overall length is extremely long. Therefore, the number of connected units is inevitably limited. In addition, as a result of not being able to replace each component freely, in order to perform effective pumping adapted to the properties of various pumped items, pumps designed exclusively for each application from the beginning of manufacture Is required.
Japanese Patent Laid-Open No. 47-29903 (FIG. 1)

  The problem to be solved can be shortened in the axial direction, making it easy to connect multiple units in series, and adapting to the characteristics of various transported items by freely replacing each component. It is to provide a unit type hollow shaft pump capable of performing effective lifting.

In the present invention, the rotor center fitted in the stator is used as a hollow shaft, the liquid transfer means is directed backward from the front end during rotation, the liquid feed blade is stretched on the inner peripheral surface of the rotor, or the hollow shaft itself A liquid feeding unit formed on the inner peripheral surface of the hollow shaft formed in a spiral passage-shaped all-pass-diameter passage, and a discharge port leading to a terminal opening of the hollow shaft. The discharge unit is a combination of two types of units, and each unit is fixed by a fixing material in a state in which the discharge unit is brought into contact with the terminal portions of a plurality of liquid feeding units connected in a single or in series. The main feature is that the liquid feed unit is configured to be assembled and detachably connected, and the start end of the liquid feeding unit is detachably connected to the terminal opening of the suction pipe.

According to the unit type hollow shaft pump of the present invention, since the liquid feeding unit is connected to the discharge unit so as to be freely assembled and divided, a member suitable for the properties of various pumped items is selected and effective pumping is performed. it can, also, the both opening end faces of the hollow shaft provided with a liquid transfer means can shortening axially liquid-feeding unit by constituting substantially flush with the both end faces of the stator, a plurality of serially arranged form Thus, it is easy to raise the head, and the number of rotations of each liquid feeding unit can be made variable so that the head can be operated in a state commensurate with the properties of the object to be pumped. Also, by connecting a plurality of liquid-feeding units in parallel form a single discharge unit, at the same time lifting a plurality of EkiHara connected to the end openings of the individual intake pipes, respectively Re the beginning of each liquid sending unit Various usages are possible, such as sending them.

The rotor shaft fitted in the stator serves as a hollow shaft, and the liquid transfer means is directed backward from the front end when rotating. The liquid feed blade is stretched on the inner peripheral surface of the rotor, or the hollow shaft itself is helically formed. formed passage of all-pass caliber type which is bent, the hollow shaft substantially flush with made form configured liquid feed unit both open end of the hollow shaft is provided on the inner peripheral surface and both end faces of the stator And a discharge unit formed by opening a discharge port leading to the end opening of the hollow shaft, and discharging to the end of a plurality of liquid feeding units connected in a single or in series The units are configured to be assembled and divided by a fixing material in a state where the units are in contact with each other, and the starting end of the liquid feeding unit is detachably connected to the terminal opening of the suction pipe. Structure. Further, the liquid-feeding unit, the liquid transfer means of the various forms that provided in the hollow shaft periphery are a plurality of types prepared by selecting necessary an adaptation to the characteristics of the pumping through the object Configure to be assembled.

In FIG. 1 and FIG. 3, 1A is a liquid feeding unit, and the rotor shaft fitted in the stator 2 has a hollow shaft 3 as a hollow shaft 3, and a liquid feeding blade is provided on the inner peripheral surface of the rotor. liquid transfer means 4a toward the front end to the rear is formed, and, both open end of the hollow shaft 3 configured to substantially flush with the both end faces of the stator 2, or somewhat short and small constructed also a hollow shaft 3 than the stator 2 To do. 2 and 3, reference numeral 1B denotes a liquid-feeding unit having a liquid transporting unit different from the above, and the inner periphery of the rotor 2 fitted in the stator 2 is formed into a hollow shaft 3, for example, in a spiral shape. By constituting the bent all-pass-diameter passage , the liquid transfer means 4b is provided to move backward from the front end during rotation. In addition, a plurality of types of liquid supply units having various forms of liquid transfer means adapted to the properties of the object to be pumped are prepared. In FIGS. 1 and 2, 6 is a stator coil, 7 is a rotor coil, 8 is a bearing, 9 is a sealing material, and 10 is a top plate. In FIG. 3, 13A is a discharge unit, and a discharge port 14 leading to the terminal opening of the hollow shaft 3 is opened, but the liquid supply unit 1A or 1B adapted to the properties of the object to be pumped is required. end opening of the hollow shaft to be assembled by the selected corresponding to a single form, Ru Tei ejection unit having an ejection port structure is use meaning in accordance with.

FIG. 3 shows a liquid feeding unit having a liquid feeding unit 4a having a liquid passage unit 1A having a liquid feeding unit 4a composed of a liquid feeding blade and located at the foremost end and having a spirally bent all-passage type passage. The fixing members (for example, fixing bolts and nuts) are connected in a state in which the units 1B and 1B are connected back to back and connected in series, and the discharge unit 13A is in contact with the rear surface of the last liquid supply unit 1B. This is an example in which the units are connected so as to be freely assembled and divided using a not-shown). Then, as shown by a two-dot chain line in the figure, the front surface of the liquid-feeding unit 1A at the foremost end is connected so as to communicate with the terminal opening 12 of the suction pipe 11. Thus, the head can be increased by arranging a plurality of liquid feeding units 1A or 1B in series. The number of rotations can be varied for each liquid feeding unit, and by selecting and mounting any kind of liquid feeding unit, effective pumping adapted to the properties of the pumped material can be performed. The fixing unit (not shown) may be connected in a state where the discharge unit 13A is in contact with the rear surface of the single liquid feeding unit 1A or 1B.

A plurality of liquid feeding units 1A, 1A or 1B, 1B are arranged in parallel, and the end openings of the hollow shafts of the liquid feeding units 1A, 1A or 1B, 1B arranged in parallel are arranged in parallel. In a state where a single discharge unit 13B is in contact with a plurality of rear surfaces arranged in series, they are connected using a fixing material, and the front surfaces of the liquid feeding units 1A, 1A or 1B, 1B are individually provided. By connecting to the terminal openings 12... 12 of the suction pipes 11... 11, they can be delivered simultaneously from different liquid sources.

FIG. 4 shows an arrangement of a plurality of liquid feeding units 1A, 1A or 1B, 1B connected in series in multiple stages so that the head height is increased. A single discharge unit 13B is connected in series with a rear surface on which a plurality of end openings of the hollow shaft are arranged in parallel, and is connected using a fixing material, and the front surface of each liquid supply unit at the foremost end is connected. This is an example in which the individual suction pipes 11 are connected to the terminal openings 12.

It is a vertical side view of the liquid feeding unit in this invention hollow shaft pump, Comprising: The example which provided the liquid transfer means which consists of a liquid feeding blade in a hollow shaft is shown. It is a vertical side view of the liquid feeding unit in this invention hollow shaft pump, Comprising: The example which provided the liquid transfer means of the all passage aperture type curved in the spiral shape in the hollow shaft is shown. It is a vertical side view of the hollow shaft pump of the present invention. FIG. 5 is a side view showing an example in which a single discharge unit is connected in series to the end portions of a plurality of liquid feeding units in which the hollow shaft pumps of the present invention are arranged in parallel, and the start ends are connected to individual suction pipes, respectively. .

Explanation of symbols

1A Liquid feed unit 1B Liquid feed unit 2 Stator 3 Hollow shaft 4a Liquid transfer means 4b Liquid transfer means 11 Suction pipe 12 Terminal opening 13 Discharge pipe 13A Discharge unit 13B Discharge unit 14 Discharge port

Claims (5)

The rotor shaft fitted in the stator serves as a hollow shaft, and the liquid transfer means is directed backward from the front end when rotating. The liquid feed blade is stretched on the inner peripheral surface of the rotor, or the hollow shaft itself is helically formed. A liquid feeding unit provided on the inner peripheral surface of the hollow shaft , formed in a bent all-pass-diameter passage, and a discharge unit having a discharge port leading to the terminal opening of the hollow shaft The unit can be assembled and divided by the fixing material when the discharge unit is in contact with the end of a plurality of liquid feeding units connected in a single or in series. A unit-type hollow shaft pump configured to be coupled and having a structure in which a start end of the liquid feeding unit is detachably connected to a terminal opening of a suction pipe. The rotor shaft fitted in the stator serves as a hollow shaft, and the liquid transfer means is directed backward from the front end when rotating. The liquid feed blade is stretched on the inner peripheral surface of the rotor, or the hollow shaft itself is helically formed. A liquid feeding unit provided on the inner peripheral surface of the hollow shaft , formed in a bent all-pass-diameter passage, and a discharge unit having a discharge port leading to the terminal opening of the hollow shaft Are arranged in parallel using a plurality of liquid feeding units connected in a single or in series, and the end of each liquid feeding unit arranged in parallel. Each unit is connected by a fixing material so that it can be assembled and divided in a state where a single discharge unit is in contact with each other in a series, and the starting end of the liquid feeding unit is individually connected to a suction pipe. Removable to the end opening of Characterized in that the connected is structural, unitary hollow shaft pump. The liquid-feeding unit includes various forms of liquid-transfer means formed on a rotor inner peripheral surface with a liquid-feeding blade stretched or an all-passage-type passage having a hollow shaft that is spirally bent. those provided in the hollow shaft periphery are a plurality of types provided, characterized in that it is assembled by selecting necessary an adaptation to the characteristics of the pumping through the object, according to claim 1 or 2, wherein Unit type hollow shaft pump. The discharge unit has a discharge port structure in various forms so that a single discharge unit can be attached to the terminal end of the liquid supply unit in which a plurality of end openings of the hollow shaft of the liquid supply unit are arranged in a single or in parallel. Yes ejection port unit are a plurality of types provided, characterized in that it is assembled by selecting a variety of use optionally the liquid-feeding unit adapted to properties of the pumping through the object, claims 1 4. The unit type hollow shaft pump according to any one of 3 above. Characterized in that the both opening end faces of the both end faces and the hollow shaft of the stator in each liquid sending unit is configured to substantially flush with, unitary hollow shaft pump according to any one of claims 1 to 4.

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