JP2019163715A - Electric pump - Google Patents

Abstract

To provide an electric pump usable for a well or the like where a water surface is changed in a prescribed depth (a depth of about 9 m, for instance) without a complicated structure.SOLUTION: An electric pump 1 includes: a first fixture 9 for suspending a pump casing 6; and a second fixture 10 for suspending a motor 2. The first fixture 9 has a first fixing section 9b and a first ring section 9a. The second fixture 10 has a second fixing section 10b and a second ring section 10a. The first fixing section 9b is fixed to the pump casing 6, and thereby the first ring section 9a is connected to the pump casing 6. The second fixing section 10b is fixed to a motor frame 3, and thereby the second ring section 10a is connected to the motor frame 3. As a result, a suspension rope 29 or the like is passed through the first ring section 9a and the second ring section 10a, thereby enabling installation of the electric pump 1 above a water surface 30 in a well 28 through a suspension rope 29 or the like.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric pump.

  Conventionally, this type of electric pump is known to be installed on the ground (see, for example, Patent Document 1).

  Hereinafter, the electric pump will be described with reference to FIG.

  As shown in FIG. 6, the electric pump 101 includes a motor 102, a pump casing 106, an impeller 105, and the like. The electric pump 101 is installed on the ground by a pump fixing leg 103a, and the pump casing 106 is filled with priming water by priming plug 113, and the impeller 105 is rotated by operating the motor 102. Suck water from the surface below to supply water to the ground.

  Some of these types of electric pumps are used by immersing them in water (for example, see Patent Document 2).

  Hereinafter, the electric pump will be described with reference to FIG.

  As shown in FIG. 7, the electric pump 201 is installed in the water below the water surface 30 of the well 28, and pushes up the water around the electric pump 201 to supply water to the ground.

JP 2007-315216 A Japanese Patent Laid-Open No. 2002-356881

  In a conventional electric pump such as Patent Document 1, the depth of a well that can be sucked up because it is installed on the ground is approximately 9 m from the ground installation surface, and the water surface changes around 9 m in depth. However, there was a problem that water could not be supplied due to changes in the water surface.

  Moreover, in the conventional electric pump like patent document 2, since it installed in water, the structure became complicated and had the subject that a price became high.

  Therefore, the present invention solves the above-described conventional problems, and provides an electric pump that can be used for a well whose water surface changes at a predetermined depth (for example, a depth of about 9 m) without a complicated structure. The purpose is to do.

  In order to achieve this object, the electric pump according to the present invention is configured to have a fixture for suspending above the water surface, thereby achieving the intended object.

  According to the present invention, an electric pump that can be used for a well or the like whose water surface changes at a predetermined depth can be obtained without a complicated structure.

The perspective view containing the partial cross section which shows the electric pump of Embodiment 1 of this invention Perspective view of the electric pump in another direction Side sectional view of the electric pump AA sectional view of the pump casing Schematic showing the construction status of the electric pump Sectional view showing a conventional electric pump Schematic showing the construction state of another conventional electric pump

  An electric pump according to an aspect of the present invention includes a first fixture for suspending a pump casing and a second fixture for suspending a motor. The first fixture and the second fixture are each a ring portion. Have

  According to this configuration, the electric pump can be installed above the water surface (in the air) inside the well by passing a rope or the like through these ring portions. For this reason, an electric pump can be installed in the position which can be sucked up, and water can be supplied. Thus, even if it does not make it a complicated structure, the electric pump which can be used for the well etc. in which a water surface changes by predetermined depth (for example, depth of around 9 m) can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1, 2, and 3, the electric pump 1 includes a motor 2, a pump casing 6, and a fan cover 12.

  The motor 2 includes a motor frame 3 and a rotating shaft 4, and one end of the rotating shaft 4 protrudes from the motor frame 3.

  The motor frame 3 has a fixing leg 3a for fixing when installed on the ground.

  As shown in FIG. 3, the motor frame 3 includes a stator 14 including a stator pack 15 and a coil 16.

  A rotor 17 composed of a rotor pack 18 and a rotating shaft 4 that are rotatably held via a bearing 19 is provided inside the stator 14.

  A capacitor 23 is provided on the top of the motor frame 3, and the capacitor 23 and the coil 16 are connected through an energization line. The capacitor 23 is covered with the terminal cover 11, and the terminal cover 11 is fixed to the motor frame 3.

  The pump casing 6 is fixed to the projecting surface of the rotating shaft 4 of the motor frame 3.

  The rotating shaft 4 is inserted into the pump casing 6, and the impeller 5 is fixed to the end of the rotating shaft 4.

  The impeller 5 is covered with a casing cover 7.

  A cooling fan 22 is fixed to the other end of the rotating shaft 4 protruding from the motor frame 3 on the side opposite to one end of the rotating shaft 4 to which the impeller 5 is fixed. The fan cover 12 covers the cooling fan 22, and the fan cover 12 is fixed to the motor frame 3.

  When the coil 16 and the capacitor 23 are energized, the rotating shaft 4 rotates, and at the same time, the impeller 5 fixed to the rotating shaft 4 and the cooling fan 22 rotate.

  A joint 8 is connected to the pump casing 6.

  A first fixture 9 for suspending the pump casing 6 and a second fixture 10 for suspending the motor 2 are provided. The 1st fixing tool 9 has the 1st fixing | fixed part 9b and the 1st ring part 9a. The 2nd fixing tool 10 has the 2nd fixing | fixed part 10b and the 2nd ring part 10a. By fixing the first fixing portion 9b to the pump casing 6, the first ring portion 9a is connected to the pump casing 6, and by fixing the second fixing portion 10b to the motor frame 3, the second ring portion 10a. Is connected to the motor frame 3.

  A mounting portion 3 b is provided between the terminal cover 11 and the fan cover 12, and the second fixing portion 10 b is fixed to the mounting portion 3 b that is a part of the motor frame 3.

  As shown in FIG. 4, the pump casing 6 includes a suction port 6 a, a discharge port 6 b, a suction water channel portion 6 c, a gas-liquid separation portion 6 e, and a priming water port 6 f, and forms an impeller storage portion 6 d together with the casing cover 7. A water channel is formed around 5.

  The suction port 6a includes a joint 8 for connecting a pipe on the suction side.

  The priming port 6f is blocked by the priming plug 13 to prevent water leakage during operation.

  For example, as shown in FIG. 5, the lower end of the suction pipe 31 is extended below the water surface 30. The electric pump 1 is connected to the suction pipe 31 via the joint 8 and sucks up water.

  A discharge pipe 32 is connected to the discharge port 6b, and the electric pump 1 supplies water to the ground.

  As shown in FIG. 4, the water sucked from the suction port 6 a passes through the suction water channel chamber 24 formed by the suction water channel part 6 c like the water flow 27, and in the impeller storage space 25 formed by the impeller storage part 6 d. It is accelerated by the impeller 5 and discharged from the discharge port 6b through the gas-liquid separation chamber 26 formed by the gas-liquid separation unit 6e.

  The first fixing portion 9b is fixed to the outer wall of the gas-liquid separation portion 6e of the pump casing 6.

  The position of the 1st fixing tool 9 may be on the perpendicular | vertical of the rotating shaft 4, and the ring upper part of the 1st ring part 9a may be located above the pump casing 6. FIG. In this case, as shown in FIG. 5, the suspension rope 29 passed through the first ring portion 9 a can be arranged so as not to interfere with the pump casing 6.

  The position of the 2nd fixing tool 10 exists on the perpendicular | vertical of the rotating shaft 4, and the 2nd ring part 10a may be located in the same height as the 1st ring part 9a. In this case, as shown in FIG. 5, when the suspension rope 29 passed through the first ring portion 9a is passed through the second ring portion 10a, the rotary shaft 4 can be arranged so as to be easily horizontal.

  In this way, the electric pump 1 can be suspended in the well 28 with the same posture as when the electric pump 1 is installed on a horizontal surface above the ground. For this reason, about the self-priming function etc., the electric pump 1 can ensure the capability equivalent to other electric pumps installed on the ground. That is, the electric pump 1 can apparently increase the height at which liquid can be sucked up from the water surface (depth at which self-priming is possible).

  Hereinafter, each embodiment will be supplemented.

  The electric pump 1 according to this embodiment includes a motor 2 having a stator 14, a motor frame 3 and a rotating shaft 4, an impeller 5 connected to the rotating shaft 4, a pump casing 6 that houses the impeller 5, and a pump casing 6. The first fixing tool 9 for suspending the motor 2 and the second fixing tool 10 for suspending the motor 2 are provided. The motor frame 3 houses the stator 14, and the first fixing tool 9 includes the first fixing portion 9b. The first fixing portion 9b is fixed to the pump casing 6 so that the first fixing portion 9b is fixed to the pump casing 6. The second fixing device 10 includes the second fixing portion 10b and the second ring portion 10a. The ring portion 9 a is connected to the pump casing 6, and the second fixing portion 10 b is fixed to the motor frame 3, whereby the second ring portion 10 a is connected to the motor frame 3. That.

  According to this configuration, by passing the suspension rope 29 and the like through the first ring portion 9a and the second ring portion 10a, the electric pump 1 is placed above the water surface 30 in the well 28 via the suspension rope 29 and the like. Can be installed. For this reason, the distance between the electric pump 1 and the water surface 30 can be reduced. As a result, even if the height of the water surface 30 inside the well 28 changes, the electric pump 1 can be installed at a position where suction can be performed reliably. Therefore, even if it does not make it a complicated structure, the electric pump 1 which can be used for the well 28 etc. in which the water surface 30 changes by the predetermined depth (for example, about 9 m depth) can be obtained.

  The pump casing 6 includes a suction port 6a, a suction water channel portion 6c, an impeller storage portion 6d, a gas-liquid separation portion 6e, and a discharge port 6b. When the impeller 5 rotates, the liquid sucked from the suction port 6a After passing through the suction water channel chamber 24, the impeller storage space 25, and the gas-liquid separation chamber 26 in this order, the water is discharged from the discharge port 6b, the suction water channel portion 6c forms the suction water channel chamber 24, and the impeller storage portion 6d is the impeller 5 Is formed, the gas-liquid separation part 6e forms a gas-liquid separation chamber 26, and the first fixing part 9b is fixed to the outer wall of the gas-liquid separation part 6e. Also good.

  According to this configuration, the electric pump 1 can be suspended in consideration of the center of gravity of the electric pump 1, so that the electric pump 1 can be stably suspended. Further, by fixing the first fixing portion 9b to the outer wall of the gas-liquid separation portion 6e, the first ring portion 9a of the first fixing portion 9b can be taken out above the pump casing 6. For this reason, since the electric pump 1 can be easily suspended, the workability of installing the electric pump 1 in the well is improved.

  Further, the second fixing portion 10b may be fixed to the upper portion of the motor frame 3.

  According to this configuration, the electric pump 1 can be suspended in consideration of the center of gravity of the electric pump 1, so that the electric pump 1 can be suspended more stably.

  The first ring portion 9 a and the second ring portion 10 a may be arranged on a vertical plane that passes through the rotation shaft 4.

  According to this configuration, the electric pump 1 can be suspended in consideration of the center of gravity of the electric pump 1, so that the electric pump 1 can be suspended more stably.

  Further, the distance between the first ring portion 9a and the rotating shaft 4 may be the same as the distance between the second ring portion 10a and the rotating shaft 4.

  According to this configuration, the electric pump 1 can be suspended in consideration of the center of gravity of the electric pump 1, so that the electric pump 1 can be suspended more stably.

  In addition, a capacitor 23 provided above the motor 2 and a terminal cover 11 that covers the capacitor 23 are provided. The upper part of the second ring part 10 a may be arranged above the uppermost part of the terminal cover 11.

  According to this configuration, when the electric pump 1 is installed via the hanging rope 29 passed through the first ring portion 9a and the second ring portion 10a, the hanging rope 29 or the like is connected to the pump casing 6 or the terminal cover 11. Interference with such as can be suppressed. For this reason, the electric pump 1 which can be easily installed above the water surface 30 in the well 28 can be obtained.

  The electric pump may be configured as a self-priming electric pump having self-priming capability.

  As mentioned above, although the electric pump which concerns on this invention was demonstrated based on embodiment, this invention is not limited to embodiment. Unless it deviates from the meaning of this invention, the form which carried out the various deformation | transformation which those skilled in the art can think to this embodiment, and the structure constructed | assembled combining the component in different embodiment is also contained in the scope of the present invention. .

  The electric pump according to the present invention is useful as an electric pump used for a well whose water surface changes at a predetermined depth.

DESCRIPTION OF SYMBOLS 1 Electric pump 2 Motor 3 Motor frame 3a Fixed leg 3b Attaching part 4 Rotating shaft 5 Impeller 6 Pump casing 6a Suction port 6b Discharge port 6c Suction water channel part 6d Impeller storage part 6e Gas-liquid separation part 6f Call water port 7 Casing cover 8 Joint 9 1st fixing tool 9a 1st ring part 9b 1st fixing part 10 2nd fixing tool 10a 2nd ring part 10b 2nd fixing part 11 Terminal cover 12 Fan cover 13 Primming plug 14 Stator 15 Stator pack 16 Coil 17 Rotor 18 Rotor Pack 19 Bearing 22 Cooling fan 23 Capacitor 24 Suction water channel chamber 25 Impeller storage space 26 Gas-liquid separation chamber 27 Water flow 28 Well 29 Hanging rope 30 Water surface 31 Suction piping 32 Discharge piping

Claims (7)

A motor having a stator, a motor frame and a rotating shaft;
An impeller connected to the rotating shaft;
A pump casing for storing the impeller;
A first fixture for suspending the pump casing;
A second fixture for suspending the motor,
The motor frame houses the stator;
The first fixture has a first fixing portion and a first ring portion,
The second fixture has a second fixing portion and a second ring portion,
By fixing the first fixing part to the pump casing, the first ring part is connected to the pump casing,
The electric pump, wherein the second ring portion is connected to the motor frame by fixing the second fixing portion to the motor frame. The pump casing includes a suction port, a suction water channel portion, an impeller storage portion, a gas-liquid separation portion, and a discharge port,
When the impeller rotates, the liquid sucked from the suction port is discharged from the discharge port after sequentially passing through the suction channel chamber, the impeller storage space, and the gas-liquid separation chamber,
The suction water channel portion forms the suction water channel chamber,
The impeller storage portion forms the impeller storage space in which the impeller is stored,
The gas-liquid separation unit forms the gas-liquid separation chamber,
The electric pump according to claim 1, wherein the first fixing part is fixed to an outer wall of the gas-liquid separation part. The electric pump according to claim 1, wherein the second fixing portion is fixed to an upper portion of the motor frame. The electric pump according to any one of claims 1 to 3, wherein the first ring portion and the second ring portion are arranged on a vertical plane passing through the rotation shaft. The electric pump according to any one of claims 1 to 4, wherein a distance between the first ring portion and the rotation shaft is the same as a distance between the second ring portion and the rotation shaft. . A capacitor provided above the motor;
A terminal cover covering the capacitor,
The upper part of the first ring part is disposed above the uppermost part of the pump casing and above the uppermost part of the terminal cover,
The electric pump according to claim 1, wherein an upper portion of the second ring portion is disposed above an uppermost portion of the terminal cover. The electric pump according to any one of claims 1 to 6, wherein the electric pump is a self-priming electric pump having self-priming capability.