JP4744135B2 - Line relay pump - Google Patents

Description

  The present invention relates to a line relay pump.

  In the conventional line relay pump, a motor is erected on a casing interposed in a lifting line, and a centrifugal impeller is attached to a motor shaft guided into the casing in a direction orthogonal to the lifting line. Mainstream (for example, see Patent Document 1). However, the installation work of the pump becomes large, the volume of the motor unit is large, and the installation place is limited to secure the space. Also, in terms of function, it is not adaptable to various transported properties, and is not suitable, for example, when many solids are mixed in the pumped water.

As another known example, a suction side casing and a discharge side casing which are formed with an annular water passage between the canned motor having an impeller mounted on one end of the main shaft and the outer body of the frame and are electrically connected to the annular water passage are provided. There is also a line relay pump that is integrally connected to the outer frame of the frame (see, for example, Patent Document 2). However, it cannot be said that the passage of the lifted object can effectively cope with various properties of the transported object due to restrictions on the shape of the impeller and the annular water passage. In addition, it is a structure that can not be replaced with each component so that it can be adapted to the properties of the pumped material at the time of use, for example, when many solid materials are mixed in the pumped water. Is unsuitable. In addition, when a plurality of units are connected in series in order to increase the head, since the connection is made through the suction casing and the discharge casing, the overall length becomes extremely long, and the number of connected units is inevitably limited. It will be.
JP-A-5-302598 (FIG. 2) Japanese Patent Laid-Open No. 6-88587 (FIG. 1)

  The problem to be solved is a line relay equipped with a liquid feeding unit that is easy to connect in series in a short shape in the axial direction and that can be freely replaced according to the properties of the pumped material. Is to provide a pump.

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. And an annular gap for water 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 a liquid transfer means that moves backward from the front end during rotation , A liquid feed blade provided on the inner peripheral surface of the hollow shaft formed in a passage of an all-pass aperture type in which a liquid feed blade is stretched on the inner peripheral surface of the rotor or the hollow shaft itself is spirally bent. The main feature is that the unit is configured to be detachably inserted in the water supply pipe line through the joint structure in a state where a plurality of units are connected in a single or in series.

According to the line relay pump of the present invention, since the liquid feeding element is unitized and is detachably inserted in the water feeding piping, the liquid feeding unit having liquid transfer means adapted to the properties of various pumped items select can be made valid pumped, also by both opening end faces of the hollow shaft provided with liquid transfer means is configured to have the both end faces of the stator is substantially flush with, feeding It can be shortened in the axial direction of the unit, and it is easy to increase the head by arranging multiple units in series. In addition, the number of rotations of each liquid feeding unit can be made variable so that it can be operated in accordance with the properties of the object to be pumped. You can also.

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. Both opening surfaces of the hollow shaft provided on the inner peripheral surface of the hollow shaft , which is formed in an all-passage type passageway in which a liquid feeding blade is stretched on the surface or the hollow shaft itself is spirally bent the liquid-feeding unit that is configured to substantially flush with the both end faces of the stator, a plurality articulated state in series form and configured to be freely disposed removably in water piping passage through a bonding structure .

1, 3 and 5, reference numeral 1 </ b> A denotes a liquid feeding unit, and a rotor shaft fitted in the stator 2 is used as a hollow shaft 3, and a liquid feeding blade is provided on the inner peripheral surface thereof, so that during rotation, formed liquid transfer means 4a toward the front end thereof rearwardly and substantially configured to flush with, or hollow shaft 3 slightly short and small in than the stator 2 the hollow shaft both opening end surface 3 and two end faces of the stator 2 Constitute. In FIG. 2, reference numeral 1 </ b> B denotes a liquid supply unit having a liquid transfer means different from that described above, and the inner periphery of the liquid supply unit is spirally bent with the hollow shaft 3 as the shaft center of the rotor fitted in the stator 2. In addition, by constituting the all-passage-type passageway , the liquid transfer means 4b is provided that faces backward from its 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. 3 to 5, 11 is a water supply pipe line, 12 is a flange joint, and other joint structures, and the liquid feed unit 1A or 1B is inserted into the water supply pipe line 11 via the joint structures 12 and 12. It is interposed and is detachably coupled by a bolt or other fixing material 15. As this coupling means, for example, by using a known one-touch type clamping mechanism or a hose opening type coupling mechanism (not shown), etc. will be able to bind to the fine water supply pipe line 11, it becomes possible to interposed automobile cooling pipe system and semiconductor cleaning piping systems integration, etc..

  FIG. 4 shows an example in which the liquid feeding unit 1A or 1B is interposed in the water feeding pipe line 11 in a state where the liquid feeding units 1A or 1B are connected in series. Thus, a head can be made high by arranging the some liquid feeding unit 1A or 1B in series. The number of rotations can be varied for each liquid feeding unit, and by selecting and mounting any type of liquid feeding unit, effective pumping suitable for the properties of the pumped material can be performed.

  FIG. 5 shows an example in which an attachment 13 is interposed between the liquid feeding unit 1 </ b> A and the flange joint structure 12. This is used when the pipe diameter is different between the upstream side and the downstream side of the liquid feeding pipe line 11.

It is a vertical side view of the liquid feeding unit which comprises this invention line relay 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 supply unit which comprises this invention line relay pump, Comprising: The example which provided the liquid transfer means of the all-pass aperture type curved in the shape of a spiral in the hollow shaft is shown. It is a vertical side view which shows the mounting state of this invention line relay pump, Comprising: It is the example using a single liquid feeding unit. It is a side view which shows the mounting state of this invention line relay pump, Comprising: It is the example which connected the several liquid feeding unit in series. It is a vertical side view which shows the mounting state of this invention line relay pump, Comprising: It is the example which interposed the attachment between the liquid feeding unit and the flange joining structure.

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 Sealing material 11 Water supply piping 12 Joint structure

Claims (2)

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 , which is formed in an all-passage type passage having a liquid-feeding blade stretched on the surface or the hollow shaft itself being spirally bent, is a single unit. A line relay pump, wherein the line relay pump is configured to be detachably inserted in a water supply pipe line through a joint structure in a state of being connected in series or in series. 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, claim 1, wherein the line relay pump.

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