JP2555518Y2 - Impeller pump - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impeller pump whose flow direction is variable.

[0002]

2. Description of the Related Art A conventional impeller pump will be described by taking a magnet transmission type as an example.

FIG. 6 is a cross-sectional view of a conventional magnet transmission type impeller pump, in which a case 1 and a case 2 are separated by a partition plate 3, and the inside of the case 1 above the partition plate 3 in FIG. Configure. In the pump chamber, there is a holder 6 rotatably mounted on a shaft 5 fixedly supported by a support portion 4. The holder 6 has an impeller 7 and a magnet similarly mounted on the holder 6. A disk-shaped driven magnet 9 held by the receiver 8 is provided. The magnet 9 is magnetized into two or four poles, and a yoke 10 is mounted thereon.

[0004] Next, in the case 2 below the partition plate 3, there is a driving unit for rotating the impeller 7 to operate the pump. That is, a drive magnet 14 is held by a disk-shaped magnet receiver 13 attached to the bearing 12 on a bearing fixed to the rotating shaft 11 a of the motor 11. The driving magnet 14 is magnetized to the same two poles or four poles as the driven magnet 9, and is driven by the driven magnet 9.
The drive magnet 14 and the drive magnet 14 are disposed facing each other with the partition plate 3 interposed therebetween and are magnetically coupled. Therefore, when the drive magnet 14 rotates, the driven magnet 9 also rotates. 15
Is a seal for sealing the pump chamber, 16 is an inflow port, and there is another discharge port.

In such a magnet transmission type impeller pump, when the drive magnet 14 is rotated by driving the motor 11, the driven magnet 9 is also rotated in accordance with the rotation, and the impeller 7 is rotated by the rotation of the holder 6. By the rotation of the impeller 7, the fluid flows into the inflow port 16.
The fluid flows in and is discharged from a discharge port (not shown) to perform a pump action.

[0006]

When water is supplied to two locations using the impeller pump as described above, an electromagnetic valve or a manual valve is provided in a water supply passage connected to the discharge port in addition to the pump. Water must be supplied by switching valves. Therefore, a valve is required outside the pump, which requires space and increases cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide an impeller pump having two discharge ports, wherein water can be supplied from one of these discharge ports, and water can be switched and supplied.

[0008]

The impeller pump according to the present invention comprises an impeller rotatably supported in a pump chamber sealed by a partition plate, and a driven magnet which rotates together with the impeller. The drive unit has a drive magnet fixed to the rotating shaft and arranged to face a driven magnet with a partition plate interposed therebetween, and further has one inlet and two discharge ports, An automatic switching valve mechanism disposed on the driven magnet side (pump chamber) between the driven magnet and the driven magnet, wherein the driven magnet is magnetically coupled to the driving magnet and rotates in the same direction. The automatic switching valve mechanism switches the valve in accordance with the rotation direction of the valve to switch the discharge port.

That is, the automatic valve switching mechanism is made of a good conductive material such as aluminum or copper, at least a part of which is located between the driving magnet and the driven magnet, and is rotatable within a certain angle range. And a valve connected to the main body so that the two discharge ports can be switched between open and closed depending on the rotation direction of the main body.

Since the impeller pump of the present invention has the above-described structure, the impeller pump rotates according to the eddy current in the main body of the automatic switching valve mechanism caused by the rotation of the magnet and the rotation of the magnet and the rotation direction of the magnet. The discharge port is selected by switching the rotation direction of the main body. Thus, the discharge port from which the fluid is discharged can be switched by simply switching the rotation direction of the drive motor.

[0011]

Next, an embodiment of the impeller pump of the present invention will be described.

FIG. 1 is a horizontal sectional view of a first embodiment of the present invention, and FIG. 2 is a vertical sectional view of the above embodiment.
In these figures, 1 is the upper case, 2 is the lower case, 3
Is a partition plate. Reference numeral 5 denotes a shaft fixed to the support portion 4, reference numeral 6 denotes a bearing rotatably mounted on the shaft 5, reference numeral 7 denotes an impeller fixed to the bearing 6, and reference numeral 9 denotes a driven magnet fixed to the bearing 6. It is located in the pump chamber. 11 is a drive motor, 12 is a rotating shaft of the motor 1
A holder fixed to 1a, 13 is a magnet receiver attached to the holder 12, and 14 is a drive magnet held by the magnet receiver 13.

The driven magnet 9 and the driving magnet 14 are disposed to face each other with the partition plate 3 interposed therebetween, and are both magnetized in two or four poles in the axial direction.

The above structure is substantially the same as a conventional magnet transmission type impeller pump.

The pump of this embodiment further includes a liquid inlet 1
6 and two liquid discharge ports 17 and 18 and an automatic switching valve mechanism 20 in addition thereto.

The automatic switching valve mechanism 20 comprises a cup-shaped main body 21 as shown in FIG.
a, 21b, and valve bodies 24, 25 at the tips thereof, and the discharge ports 17, 18 are formed with valve seats 26, 27, respectively. When the main body 21 rotates in the direction of the arrow in FIG.
5 is pressed against the valve seat 27 provided at the discharge port 18 to close the flow path, and when rotated in the direction opposite to the arrow, the valve element 24 is pressed against the valve seat 26 provided at the discharge port 17 to close the flow path. Close up.

Next, the operation of the first embodiment will be described. First, when the drive magnet 14 is rotated by the drive of the motor 11, the driven magnet 9 is also rotated in accordance with the rotation, so that the impeller 7 is rotated. With the rotation of the impeller, the fluid flows in from the inlet 16 and is sent out from the outlet.

At this time, the main body 21 of the automatic switching valve mechanism 20 also rotates. Here, when the rotation direction of the motor 11, that is, the rotation direction of the driven magnet 9 is in the direction of the arrow shown in FIG. 1, the rotation of the body 21 is also in the direction of the arrow, so that the valve body 25 is pressed against the valve seat 27 and the rotation of the body in this state. The movement stops and keeps that state.
Therefore, the flow of the fluid due to the rotation of the impeller 17 is
The water flows from the inflow port to the first discharge port 17 and is sent out from here to be supplied with water.

Next, the driving direction (rotation direction) of the motor 11
Is reversed, the rotation direction of the driven magnet 9 is also reversed. That is, it rotates in the direction opposite to the arrow in FIG. By this rotation, the main body 21 of the automatic opening / closing valve mechanism 20 also rotates in the direction opposite to the arrow, whereby the valve body 25 that has been closed until now is separated from the valve seat 27, and the valve body 24 is pressed against the valve seat 26 instead. Close the valve. This switches the valve. Therefore, the flow of the fluid due to the rotation of the impeller 7 changes from the inlet 16 to the flow through the second outlet 22.

As described above, according to the pump of this embodiment, the discharge port from which the fluid is sent out from the pump can be changed by switching the rotation direction of the motor 11.

FIGS. 4 and 5 show a second embodiment of the pump of the present invention.

In this embodiment, as shown in FIG. 4, the first discharge port 17 and the second discharge port 18 are arranged in a straight line, and the automatic opening / closing valve mechanism 30 is structured as shown in FIG. It is what it was. The valve mechanism 30 has a structure in which a main body 31 has a cutout 32 of a predetermined length formed in a container as shown in FIG. 5, and is rotatably arranged as shown in FIG.

In this embodiment, the driven magnet 9
When the body rotates in the direction of the arrow, the body 31 also rotates in the direction of the arrow in response. Thereby, the end 32a of the notch 32 of the main body 31 hits the stopper 33, and the state is maintained. Therefore, the second outlet 18 is blocked by the main body 31 and the first outlet 17 is provided with the notch 32. Accordingly, the flow of the fluid due to the rotation of the impeller 7 is restricted to the inlet 1
6 through the first outlet 17.

If the direction of rotation of the motor 11 is reversed and the direction of rotation of the driven magnet 9 is reversed, the main body 31 of the automatic opening / closing valve mechanism also rotates in the direction opposite to the arrow. If the main body is rotated in the direction opposite to the arrow and the state in which the end 32b of the notch 32 abuts on the stopper 33 is maintained, the flow of the fluid due to the rotation of the impeller 7 flows from the inlet 16 to the second outlet. 18.

As described above, also in this embodiment, it is possible to change the flow of the fluid by switching the rotation direction of the motor. Here, the cup-shaped automatic switching valve mechanism 2
If the bottom portion of the main body 21 or 31 of 0 or 30 is formed of a good conductor metal such as aluminum or copper, the same direction as the rotation direction of the magnet is generated by the eddy current in the metal caused by the movement of the magnetic field due to the rotation of both magnets. The main body also rotates in the same direction due to the force to rotate the main body. This body can be rotated by the movement of the fluid, but it is difficult to obtain a stable operation of fast switching due to slow rotation, etc.
As described above, it is desirable to make it from aluminum or the like.

The bearing 6 may or may not be in contact with the bottom surface of the main body 21 or 31. The shaft 5 is fixed and the bearing 6 rotates with respect to the shaft 5.
, And the bearing 6 may be fixed to the shaft 5. In this case, since both the shaft 5 and the bearing 6 rotate, the impeller 7 and the driven magnet 9
Or fixed to the bearing 6.

[0027]

[Effect of the Invention] The magnet transmission type impeller pump of the present invention only needs to switch the rotation direction of the motor. In addition, since the valve mechanism has a simple structure and is arranged in the pump, the space is small and the cost is excellent.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the first embodiment of the present invention;

FIG. 3 is a perspective view of a main body of the automatic switching valve mechanism used in the first embodiment of the present invention.

FIG. 4 is a horizontal sectional view of the second embodiment of the present invention;

FIG. 5 is a perspective view of a main body of the automatic switching valve mechanism used in the second embodiment of the present invention.

FIG. 6 is a sectional view of a conventional impeller pump.

[Explanation of symbols]

1 case, 7 impeller, 9 driven magnet, 1
1 drive motor, 14 drive magnet, 17 first
Outlet, 18 second outlet, 20 automatic switching valve mechanism.

Claims (1)

(57) [Scope of request for utility model registration] An impeller rotatably disposed in a pump chamber, a driven magnet held so as to rotate with the impeller, a partition sealing the pump chamber, and a driven magnet sandwiching the partition. In a pump comprising a drive magnet disposed to face each other, the pump further comprises two discharge ports provided in the pump chamber, and an automatic switching valve mechanism for switching the discharge ports to open and close, wherein the automatic switching valve mechanism includes the driven magnet. And a drive magnet, a plate-shaped portion made of a good conductive material, and a main body that rotates within a certain angle range, and one end of the above-mentioned rotation range, one discharge opening is opened. A valve that closes the discharge port and performs opening and closing operations at the other end, and switches the opening and closing of the valve by changing the rotation direction of the magnet. .