JP4610320B2 - 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 suction port leading to the opening of the hollow shaft. The suction unit is made of a combination of two types of units and a plurality of liquid feeding units connected in series or in a state where the suction unit is brought into contact with the starting end of each of the liquid feeding units connected in series. The main feature is that the liquid-feeding unit is configured to be detachably coupled and the terminal portion of the liquid feeding unit is detachably connected to the opening of the discharge pipe.

According to the unit type hollow shaft pump of the present invention, since the liquid feeding unit is connected to the suction 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 increase the lifting height, and the number of rotations of each liquid feeding unit can be made variable to allow operation in a state commensurate with the properties of the object to be pumped. In addition, various liquid feeding units can be connected in parallel to a single suction unit, and each liquid feeding unit can be connected to an individual discharge pipe and simultaneously pumped in multiple directions. It is.

The rotor shaft fitted in the stator is used 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 spirally formed. formed passage of all-pass caliber type that is bent, and the hollow liquid feed comprising constitute substantially flush with the both end faces of both the opening end face of the hollow shaft is provided on the inner peripheral surface of the stator shaft unit The suction unit is composed of a combination of two types of units and a suction unit formed by opening a suction port leading to the opening end of the hollow shaft, and is connected to the starting ends of a plurality of liquid feeding units connected in a single or in series. The unit is configured such that the units can be assembled and divided by a fixing material in a state where they are in contact with each other, and the terminal portion of the liquid feeding unit is detachably connected to the opening of the discharge pipe. And 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, 11 </ b> A is a suction unit, and a suction port 12 leading to the opening at the start end of the hollow shaft 3 is opened. Plural types of suction units having a suction port structure in various forms adapted to the properties of the object to be transported are prepared (not shown), those equipped with a strainer (not shown), and others.

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 units 1B, 1B are connected in series with each other in the back, and the fixing unit (for example, fixing bolts, nuts, etc.) is formed in a state in which the suction unit 11A is in contact with the front surface of the frontmost liquid-feeding unit 1A. 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 rear surface of the rearmost liquid-feeding unit 1B is connected to the start-end opening 14 of the discharge pipe 13. Thus, the head can be increased by arranging the plurality of liquid feeding units 1B in series on the rear end face of the liquid feeding unit 1A. 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 suction unit 11A is in contact with the front 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 a single suction unit 11B is arranged in front of the liquid feeding units 1A... 1A or 1B. In a state where they are in contact with each other in series, they are connected using a fixing material, and the rear surfaces of the liquid feeding units 1A, 1A or 1B, 1B are respectively connected to the start end openings 14 of the individual discharge pipes 13,.・ By connecting to 14, it can be delivered to different places at the same time.

  FIG. 4 shows that a plurality of liquid feeding units 1B... 1B connected in series at the rear end face of the liquid feeding units 1A. A single suction unit 11B is in contact with the front surface of the front end liquid supply unit in a series, and is connected using a fixing material. The rear surface of each rear end liquid supply unit is connected to an individual discharge pipe 13 · This is an example of connection to 13 start-end openings 14.

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. 6 is a side view showing an example in which a single suction unit is connected in series to the start ends of a plurality of liquid feeding units in which hollow shaft pumps of the present invention are arranged in parallel, and the end portions are connected to individual discharge 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 11A Suction unit 11B Suction unit 12 Suction port 13 Discharge piping 14 Start end opening

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 curved all-pass-diameter passage, and a suction unit having a suction port leading to the opening at the start end of the hollow shaft The unit can be assembled and divided by the fixing material by bringing the suction unit into contact with the starting 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 terminal portion of the liquid feeding unit is detachably connected to a starting end opening of a discharge pipe. The rotor shaft fitted in the stator is used 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 spirally formed. A liquid feeding unit provided on the inner peripheral surface of the hollow shaft , formed in a curved all-pass-diameter passage, and a suction unit having a suction port leading to the opening at the start end of the hollow shaft Are arranged in parallel using a plurality of liquid feeding units connected in a single or in series, and the start end of each liquid feeding unit arranged in parallel. The unit is configured to be connected in a manner that can be assembled and divided by a fixing material in a state where a single suction unit is in contact with each other in a series, and the terminal portion of the liquid feeding unit is individually connected to an individual discharge pipe. Removable at the opening of the opening 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 suction unit can be provided with a single suction unit at the start end of a liquid feeding unit in which a plurality of suction ports of the liquid feeding unit are arranged in a single or in parallel, and a simple cylindrical one or a peripheral wall is tapered. There are multiple types of bent-type and with various types of suction port structures , such as those with strainers, which can be selected and assembled according to the nature of the object to be transported. The unit type hollow shaft pump according to any one of claims 1 to 3 , wherein the unit type hollow shaft pump is characterized. 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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