JP4744134B2 - 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 connected to the suction cover and the discharge cover, 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. This inevitably limits the number of units connected. 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 shaft center of the rotor fitted in the stator is used as a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. Further, an annular gap of the fitting is formed in a watertight manner by a sealing material provided on the wetted end face side of each bearing so as not to protrude from both end faces of the stator, and the liquid is transferred from the front end to the rear end when rotating. A means is provided on the inner peripheral surface of the hollow shaft, which is formed in an all-pass aperture type passageway in which a liquid feeding blade is stretched on the inner peripheral surface of the rotor or the hollow shaft itself is spirally bent. Liquid feeding unit, a suction unit formed by opening a suction port leading to the opening end of the hollow shaft, and a discharge unit formed by opening a discharge port leading to the end opening of the hollow shaft Unit combination Each unit can be assembled and divided by a fixing material by bringing the suction unit into contact with the start end of a plurality of liquid feeding units connected in series or in series and the discharge unit in contact with the end. The main feature is that it is configured so as to be connected to.

According to the unit type hollow shaft pump of the present invention, since the liquid feeding unit is connected to the suction unit and the discharge unit so as to be assembled and divided, an effective pumping can be performed by selecting a member suitable for the properties of various pumped items. can be carried out, 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, in series form It is easy to increase the head by arranging a plurality of them, and it is also possible to operate in a state commensurate with the properties of the object to be transported by making the rotation speed of each liquid feeding unit variable. In addition, various uses such as increasing the pumping amount by connecting a plurality of liquid feeding units in parallel to a single suction unit are possible.

A rotor shaft fitted into the stator is used as a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. An annular gap for the fitting is formed in a watertight manner by a sealing material provided on the wetted end face side of each bearing so that it does not protrude from both end faces of the bearings, and a liquid transfer means that moves backward from the front end during rotation is provided on the inner circumference of the rotor. stretched or feeding blade surface, the hollow shaft itself formed passage of all-pass caliber type which is bent spirally, both open end of the hollow shaft is provided on the inner peripheral surface of the hollow shaft a liquid transfer unit comprising constitutes substantially flush with the both end faces of the stator, a suction unit formed by opening the inlet leading to the starting end opening of the hollow shaft, the discharge port leading to the terminating opening of said hollow shaft Establishing a discharge unit It consists of a combination of three types of units, and the suction unit is brought into contact with the starting end of a plurality of liquid feeding units connected in a single or in series, and the discharge unit is brought into contact with the terminal In addition, the units are connected to each other by a fixing material so as to be assembled and divided, and a plurality of types of liquid feeding units are provided in which various forms of liquid transfer means are provided on the inner peripheral surface of the hollow shaft. It is configured to select and assemble one adapted to the properties as necessary.

1 and 4, reference numeral 1A denotes a liquid feeding unit. By providing a liquid feeding blade on the inner peripheral surface of the rotor 2 fitted in the stator 2 as an axial center, a liquid feeding blade is provided from its front end during rotation. liquid transfer means 4a towards 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 the hollow shaft 3 somewhat short and small in structure than the stator 2. 2 and 4, reference numeral 1B denotes a liquid-feeding unit having a liquid-transfer means different from the above, and the inner peripheral surface of the liquid-feeding unit is spiral, for example, with the hollow shaft 3 as the shaft center of the rotor fitted in the stator 2 By configuring the curved all-pass-diameter passage , the liquid transfer means 4b directed from the front end to the rear during rotation is provided. 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. 4, 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. However, the suction wall 12 is not limited to a simple cylindrical shape, and the peripheral wall is tapered. 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. In FIGS. 3 and 4, 13A is a discharge unit, and a discharge port 14 leading to a terminal opening of the hollow shaft 3 is opened. However, a space between the mounting seat with the suction unit and the discharge port 14 is the hollow shaft 3. It is not limited to a cylindrical shape that is larger than the end opening diameter of the hollow shaft 3, but is the same diameter as or smaller than the end opening diameter of the hollow shaft 3 (not shown), or a conical shape whose peripheral wall is curved in a tapered shape (not shown). It is desirable to prepare a plurality of types of discharge units having a discharge port structure with various shapes adapted to the properties of the pumped object, with the discharge port 14 terminating in a flange or screwed shape (not shown), and the like. .

Figure 4 is a liquid feed having a feeding unit 1A is positioned in the forwardmost end, the liquid transfer means 4b made passage of all-pass caliber type which is bent in a spiral shape having a liquid transfer means 4a made of liquid feed blade Units 1B and 1B are connected back and forth in series, and suction unit 11A is brought into contact with the front surface of frontmost liquid-feeding unit 1A and discharge unit 13A is brought into contact with the rear surface of rearmost liquid-feeding unit 1B. This is an example in which the units are connected so as to be assembled and divided by using the fixing material 15 according to the state. With this configuration, the number of rotations can be varied for each liquid-feeding unit. For example, the front-end liquid-feeding unit 1A has a rotational speed mainly for agitation, and the subsequent liquid-feeding units 1B and 1B mainly feed. It can be used in a mode commensurate with the properties of the object to be transported, such as the intended rotational speed. The suction unit 11A may be brought into contact with the front surface of the single liquid feeding unit 1A or 1B, and the discharge unit 13A may be brought into contact with the rear surface, and the fixing unit 15 may be used for connection. Alternatively, only a plurality of the same type of liquid feeding units 1A... 1A or 1B... 1B are connected in series, and the suction unit 11A is brought into contact with the front surface of the frontmost liquid feeding unit 1A and the rearmost liquid feeding unit 1B. The units may be connected so as to be assembled and divided by using the fixing material 15 in a state where the discharge unit is brought into contact with the rear surface. Thus, the head can be increased by arranging a plurality of liquid feeding units in series.

  When it is desired to increase the pumping amount, a plurality of liquid feeding units 1A, 1A or 1B, 1B are arranged in parallel, and the liquid feeding units 1A, 1A or 1B, 1B arranged in parallel are arranged. A single suction unit 11B is brought into contact with the front surface in a series, and the discharge units 13A,... 13A or a single discharge unit 13C are brought into contact with the rear surface, respectively, and are connected using the fixing material 15. Although the plurality of discharge ports 14.. 14 may be simultaneously lifted to different places, the discharge ports 14 may be combined into one place. FIG. 5 shows a plurality of liquid feeding units 1A.. 1A or 1B... 1B connected in series in multiple stages so as to raise the head. A case in which a single suction unit 11 is brought into contact with the front end in a series, and the discharge units 13A,. FIG. 7 shows a state in which a single discharge unit 13C is contacted in series in place of the discharge units 13A, 13A that are in contact with the rear surface of the liquid feeding unit. It is an example of using and connecting.

  When pumping water from a plurality of tanks or water grooves provided in parallel, a plurality of liquid feeding units 1A... 1A or 1B... 1B are arranged in parallel, and these liquid feeding units 1A. The suction units 11A... 11A are brought into contact with the front surfaces of 1A and 1B... 1B, respectively, and the single discharge unit 13B is brought into contact with the rear surface. The discharge ports 14 may be gathered in one place, but can be simultaneously fed from a plurality of discharge ports 14. FIG. 6 shows that a plurality of liquid feeding units 1A, 1A or 1B, 1B, which are connected in series in multiple stages so as to raise the head, are arranged in parallel using a plurality of pairs, An example in which the suction units 11A,... 11A are brought into contact with the front ends, and a single discharge unit 13B is brought into contact with the rear surface of each liquid supply unit in a series, using a fixing material. It is.

  As shown in FIG. 8, the unit type hollow shaft pump assembled as shown in the first to third embodiments is connected to the outside of each liquid feeding unit 1A, 1A or 1B, 1B.・ ・ 16 can be connected in parallel. The specific structure of the connecting means 16.. 16 is not limited to the illustrated one.

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 top view of this invention hollow shaft pump. It is a vertical side view of the hollow shaft pump of the present invention. Side view showing an example in which a single suction unit is contacted in series with the first end of a plurality of liquid delivery units arranged in parallel with the discharge unit abutting against the final end of each liquid delivery unit FIG. Side view showing an example in which a single discharge unit is brought into contact with a final end of a plurality of liquid supply units arranged in parallel with the discharge unit being brought into contact with the first end of each liquid supply unit. FIG. A single discharge unit is brought into contact with the last end of each liquid supply unit in series, and a single suction unit is made to contact in series with the starting end of a plurality of liquid supply units arranged in parallel. FIG. It is a top view which shows the state connected in parallel by the connection means attached to the outer side part of each liquid feeding unit.

Explanation of symbols

1A Liquid feed unit 1B Liquid feed unit 2 Stator 3 Hollow shaft 4a Liquid transfer means 4b Liquid transfer means
8 Bearing
9 Seal material 11A Suction unit 11B Suction unit 12 Suction port 13A Discharge unit 13B Discharge unit 13C Discharge unit 14 Discharge port 15 Fixing material 16 Connecting means

Claims (8)

A rotor shaft fitted into the stator is used as a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. An annular gap for the fitting is formed in a watertight manner by a sealing material provided on the wetted end face side of each bearing so that it does not protrude from both end faces of the bearings, and a liquid transfer means that moves backward from the front end during rotation is provided on the inner circumference of the rotor. A liquid- feeding unit provided on the inner peripheral surface of the hollow shaft , wherein a liquid-feeding blade is stretched on the surface, or the hollow shaft itself is spirally bent and formed in an all-pass aperture type passageway ; It consists of a combination of three types of units: a suction unit that opens a suction port that leads to the opening end of the hollow shaft, and a discharge unit that opens a discharge port that leads to the end opening of the hollow shaft. One or straight The units are connected to each other by a fixing material so that they can be assembled and divided in a state where the suction unit is brought into contact with the start ends of the plurality of liquid feeding units connected in a shape and the discharge unit is brought into contact with the end portions. A unit-type hollow shaft pump characterized by A rotor shaft fitted into the stator is used as a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. An annular gap for the fitting is formed in a watertight manner by a sealing material provided on the wetted end face side of each bearing so that it does not protrude from both end faces of the bearings, and a liquid transfer means that moves backward from the front end during rotation is provided on the inner circumference of the rotor. A liquid- feeding unit provided on the inner peripheral surface of the hollow shaft , wherein a liquid-feeding blade is stretched on the surface, or the hollow shaft itself is spirally bent and formed in an all-pass aperture type passageway ; It consists of a combination of three types of units: a suction unit that opens a suction port that leads to the opening end of the hollow shaft, and a discharge unit that opens a discharge port that leads to the end opening of the hollow shaft. Or series A single suction unit is brought into contact with the start end of each liquid feed unit arranged in parallel using a plurality of sets of liquid feed units connected to each other, and the discharge unit is brought into contact with the end. A unit-type hollow shaft pump, wherein the units are connected to each other by a fixing material so as to be assembled and divided depending on the state of the fixing. A rotor shaft fitted into the stator is used as a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. An annular gap for the fitting is formed in a watertight manner by a sealing material provided on the wetted end face side of each bearing so that it does not protrude from both end faces of the bearings, and a liquid transfer means that moves backward from the front end during rotation is provided on the inner circumference of the rotor. A liquid- feeding unit provided on the inner peripheral surface of the hollow shaft , wherein a liquid-feeding blade is stretched on the surface, or the hollow shaft itself is spirally bent and formed in an all-pass aperture type passageway ; It consists of a combination of three types of units: a suction unit that opens a suction port that leads to the opening end of the hollow shaft, and a discharge unit that opens a discharge port that leads to the end opening of the hollow shaft. One or straight A plurality of liquid-feeding units connected in a line are arranged in parallel, and the suction unit is brought into contact with the start end of each liquid-feeding unit arranged in parallel, and the terminal is single-ended. A unit-type hollow shaft pump characterized in that the units are connected to each other by a fixing material so as to be assembled and divided in a state in which the discharge units are in contact with each other in a series. The rotor center fitted in the stator is a hollow shaft , and the rotor is rotatably supported by bearings interposed above and below the annular gap of the fitting so as not to protrude from both end faces of the stator. An annular gap for the fitting is formed in a watertight manner by a sealing material provided on the liquid contact end face side of each bearing so as not to protrude from both end faces of the stator, and a liquid transfer means directed backward from the front end during rotation is provided in the rotor. A liquid- feeding unit provided on the inner peripheral surface of the hollow shaft , wherein a liquid-feeding blade is stretched on the peripheral surface, or the hollow shaft itself is spirally bent and formed in an all-pass aperture type passage. It is composed of a combination of three types of units: a suction unit that opens a suction port that leads to the opening end of the hollow shaft, and a discharge unit that opens a discharge port that leads to the end opening of the hollow shaft. One or straight A plurality of liquid-feeding units connected in a shape are used to make a single suction unit abut against the starting end of each liquid-feeding unit arranged in parallel, and a single discharge unit to the end. A unit-type hollow shaft pump, wherein the units are connected to each other by a fixing material so that they can be assembled and divided in a state where they are in contact with each other in a series. There are multiple types of liquid feeding units provided with various forms of liquid transferring means on the inner peripheral surface of the hollow shaft, and it is possible to select and assemble one that is suitable for the properties of the object to be pumped. The unit type hollow shaft pump according to any one of claims 1 to 4 , wherein the unit type hollow shaft pump is characterized. Multiple types of suction units and discharge units with various types of suction port and discharge port structure liquids are prepared, and those that are suitable for the properties of the object to be pumped can be selected and assembled as necessary. The unit-type hollow shaft pump according to any one of claims 1 to 5. The connection means a plurality of units empty shaft pump wherein is attached to the outer portion of the liquid sending unit, and characterized by being configured to be coupled in parallel form, according to any one of claims 1 to 6 Unit type hollow shaft pump. 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 7.

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