JP2002202091A - Pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump device of small size even if it is equipped with a bracket in which the producibility is enhanced by establishing common use of component parts. SOLUTION: A mechanical seal 22 is installed between a casing cover 20 to block an opening in a motor 14 and a motor shaft 16 penetrating the cover 20, in proprietary pump casings 26a-26d and accordance with the intended use are coupled with an integrated rotor 10 standardized in which an impeller 24 is installed at the protruding end of the motor shaft 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device, and more particularly, to a pump device in which parts are shared to improve productivity.

[0002]

2. Description of the Related Art A wide variety of pump devices are produced and used depending on the needs of each user. Conventionally, there are many types and types of pump devices, and since the types of motors used vary depending on the application, it is difficult to share them, and assemble dedicated parts suitable for the type and type of each pump device. Was generally configured.

For example, as shown in Table 1, LPD type line pump, LPS type stainless steel line pump, FSD type
In the case of the mold piece suction centrifugal pump, the SCD type stainless steel centrifugal pump, etc., these dedicated motors, impellers, mechanical seals, mechanical covers (casing covers), casings, and the like are separately prepared, and these are combined to produce various types. A pump device was configured.

[Table 1] As shown in FIG. 6, even a single pump casing part made of stainless steel has a pump casing 1 dedicated to an end-top type and a double-structured pump casing having an inner casing inside. The pump casing 2 dedicated to the line type was separately manufactured, and this was connected to the motor 3 to constitute each pump device.

Further, as shown in FIG. 7, when a pump is constructed by combining pumps with different types of motors A to C such as a dry motor, a canned motor and a DC brushless variable speed motor, for example, Each motor A
To C, dedicated pumps (casings) A to C are prepared, and the respective pumps are configured by combining the motors A to C and the pumps (casings) A to C suitable for the motors A to C. I was

[0005] For example, in a land pump device,
As shown in FIG. 8, the motor 4
And a pump 5 and a bracket 6 for partitioning them. In this type of pump device, the motor 4 is connected to one of the brackets 6 via a bolt 7 and the other to a motor 8 via a bolt 8. Pumps 5 are fastened respectively.

[0006]

However, in the conventional pump device, it is necessary to produce and use a dedicated part for each of a variety of pump devices, and the types of parts to be prepared increase. There are problems that productivity is hindered, inventory management is troublesome, and supply of replacement parts becomes difficult.

Further, in the pump device having the above-mentioned bracket, the bracket needs to have a thickness enough to secure a space for tightening each bolt, and therefore, the thickness of the bracket is large. This leads to an increase in the size of the pump device.

The present invention has been made in view of the above circumstances, and is intended to improve the productivity by promoting the sharing of parts, and to reduce the size of the pump even if it has a bracket. It is intended to provide a device.

[0009]

According to the first aspect of the present invention, a casing cover for closing an opening of a motor and / or a casing cover for closing an opening of the motor are provided.
Alternatively, a mechanical seal is mounted between the bracket and the motor shaft penetrating the casing cover and / or the bracket, and an impeller is mounted on a protruding portion of the motor shaft to provide a standardized integrated rotating body having a special purpose according to the purpose of use. A pump device comprising a pump casing connected thereto.

[0010] Thus, for example, LP
The main parts of the rotating body are constructed by connecting various casings to the D type line pump, LPS type stainless steel line pump, FSD type single suction centrifugal pump, SCD type stainless steel centrifugal pump, etc. Can be shared.

According to a second aspect of the present invention, there is provided a pump device wherein an inner casing of an in-line type press plate pump casing and an end-top type press plate pump casing are shared. . This makes it possible to reduce the number of parts by forming an in-line type press plate pump casing by surrounding the outer casing with the end-top type press plate pump casing as the inner casing. it can.

According to a third aspect of the present invention, in manufacturing a pump device of a different model, a pump casing of the same size as the motor is connected to a different type of motor. Device. Thus, even if the type of the pump is different, the pump casing can be shared by connecting a single pump casing to configure different types of pump devices.

According to a fourth aspect of the present invention, the motor, the pump, and the bracket that separates the motor and the pump are integrally fastened by bolts that penetrate between the motor and the pump and pass through the inside of the bracket. Pump device. Thus, by using a bracket as thin as possible, the size of the pump device can be reduced, and the working efficiency can be improved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a pump device according to a first embodiment of the present invention. This pump device connects a dedicated pump casing according to the purpose of use to the standardized integrated rotating body 10 shown in FIG.
For example, the diameter is φ25 ~ φ50, the output is 0.05kW ~
Various types of pump devices 12a to 12d shown in FIGS. 2A to 2D of 2.2 kW are configured.

That is, the integrated rotating body 10 is
The motor shaft 16 of the motor 14 extends through a thin plate-shaped casing cover 20 that closes an opening of the motor casing 18. A mechanical seal 22 as a shaft sealing device is disposed between the casing cover 20 and the motor shaft 16, and an impeller 24 is attached to a tip of the motor shaft 16. And the motor 14
Through a flange 18a of the motor casing 18,
Pump casings 26a to 26d surrounding the impeller 24
(See FIG. 2), various pump devices 12 can be connected.
a to 12d (see FIG. 2).

Here, FIG. 2 (a) shows a pump casing 26a dedicated to the FSD type single suction centrifugal pump connected to the integrated rotating body 10 to form the FSD type single suction centrifugal pump 12a.
FIG. 2B shows an SCD stainless steel spiral pump 12b obtained by connecting a pump casing 26b dedicated to the SCD stainless steel spiral pump to the integrated rotating body 10, as shown in FIG.
FIG. 2C shows an LPD type line pump 12c by connecting a pump casing 26c dedicated to an LPD type line pump to the integrated rotating body 10, and FIG. 2D shows an integrated pump casing 26d dedicated to an LPS type stainless steel line pump. LPS type stainless steel line pump 12 connected to rotating body 10
d.

As described above, by connecting the various types of dedicated pump casings 26a to 26d according to the purpose of use to the integrated rotating body 10 to form various pump devices 12a to 12d, the motor 14, the casing cover 20, The rotating body main parts such as the mechanical seal 22 and the impeller 24 can be shared.

Table 2 shows the relationship among these motors, impellers, mechanical seals, casing covers (mechanical covers), and casings.

[Table 2]

The above-described example shows an example in which the opening of the motor is closed by a casing cover, but the present invention can be applied to a pump in which the motor and the pump are separated by a bracket. It is.

FIG. 3 shows a pump device according to a second embodiment of the present invention. In this pump device, for example, an end-top casing 30 made of a press-formed plus plate is connected to an integrated rotating body (motor) 10 shown in FIG.
An SCD type stainless steel centrifugal pump 32 shown in FIG. The casing 30 is used as an inner casing, and the inner casing 30 and an outer casing 34 made of a plus plate surrounding the inner casing 30 are joined together.
A line type casing 36 is formed, and the inner casing 3
0 and an outer casing 34, for example, an integrated rotating body (motor) 1 shown in FIG.
0 to form an LPS type stainless steel line pump 38 shown in FIG. 3 (b).

As described above, by using the end-top type pump plate pump casing 30 as the inner casing of the in-line type press plate pump casing 36, the number of parts can be reduced.

FIG. 4 shows an outline of a pump device according to a third embodiment of the present invention. When the pump device is configured by combining pumps with different types of motors A to C such as a dry motor, a canned motor, and a DC brushless variable speed motor, each of these motors A
-C, the common dimension of the pump (casing) A, that is, the common dimension of the motor A and the pump (casing) A,
Assuming that the fitting dimensions of the motor B and the pump (casing) A and the fitting dimensions of the motor C and the pump (casing) A are all the same, the motor A and the pump (casing) A, the motor B and the pump (casing) A, and the motor C And a pump (casing) A in combination to constitute each pump device.

As described above, by connecting a single pump casing A to pumps A to C of different types to form pump devices of different types, the pump casing can be shared.

FIG. 5 is an enlarged view of a main part of a pump device according to a fourth embodiment of the present invention, which shows a motor 40 and a pump 4 in relation to a load-side bearing such as a land-based pump device.
2 is applied to a pump device in which a bracket 44 supporting a bearing is interposed between the motor 40 and the pump 42 to separate the motor 40 and the pump 42 from each other. 42, and are integrally fastened by bolts 46 penetrating through the inside of the bracket 44. That is, the mounting dimensions of the motor 40 and the pump 42 are made the same, and a through-hole 44a is provided at a position corresponding to the mounting dimensions of the peripheral edge of the bracket 44, whereby the bolt 46 is tightened.
0, the pump 42 and the bracket 44 are integrally fastened.

In this example, it is not necessary to use a bracket having a thickness enough to secure a space for tightening bolts, and it is not necessary to use a bracket as thin as possible. Accordingly, the size of the pump device can be reduced, and work efficiency can be improved.

[0026]

As described above, according to the present invention,
By sharing parts, the number of parts can be reduced, thereby providing a pump device with improved productivity.

[Brief description of the drawings]

FIG. 1 is a front view showing an integrated rotating body of a pump device according to a first embodiment of the present invention.

FIG. 2 is a front view showing various different pump devices configured by using the integrated rotating body shown in FIG. 1;

FIG. 3 shows a pump device according to a second embodiment of the present invention, wherein (a) shows an SCD type stainless steel spiral pump,
(B) is a schematic diagram of a state where each of the LPS type stainless steel line pumps is configured.

FIG. 4 is a diagram illustrating a relationship between a motor and a pump (casing) of a pump device according to a third embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view illustrating a main part of a pump device according to a fourth embodiment of the present invention;

6A and 6B are schematic diagrams showing a conventional pump device, in which FIG. 6A shows an SCD type stainless steel spiral pump, and FIG. 6B shows an LPS type stainless steel line pump.

FIG. 7 is a diagram showing a relationship between a motor of a conventional pump device and a pump (casing).

FIG. 8 is an enlarged cross-sectional view showing a main part of a conventional pump device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Integrated rotary body 12a-12d Pump device 14 Motor 16 Motor shaft 18 Motor casing 20 Casing cover 22 Mechanical seal 24 Impeller 26a-26d Pump casing 30 End / top type casing (inner casing) 32, 38 Pump device 34 Outer casing 36 In-line type casing 40 Motor 42 Pump 44 Bracket 44a Through hole 46 Bolt

Continuing on the front page (72) Inventor Kenichi Kajiwara 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside the Ebara Works Co., Ltd. (72) Inventor Yukimasa Nakama 11-1 Asahi-cho Haneda, Ota-ku, Tokyo Ebara Works Co., Ltd. F term (reference) 3H022 AA01 BA01 BA06 CA23 CA50 DA07 DA20 3H034 AA01 BB01 BB06 CC03 CC05 CC06 DD01 DD21 DD30 EE05 EE12 EE13

Claims (4)

[Claims] 1. A mechanical seal is mounted between a casing cover and / or bracket for closing an opening of a motor and a motor shaft penetrating the casing cover and / or bracket, and an impeller is mounted on a protruding portion of the motor shaft. A pump device characterized in that a dedicated pump casing according to the purpose of use is connected to an integrated rotating body mounted and standardized. 2. A pump device wherein an inner casing of an in-line type press plate pump casing and an end-top type press plate pump casing are shared. 3. A pump device characterized in that, when manufacturing pump devices of different models, a pump casing having the same fitting dimensions as the motors is connected to different types of motors. 4. A pump device, wherein a motor, a pump, and a bracket that separates the motor and the pump are integrally fastened with bolts penetrating between the motor and the pump and penetrating inside the bracket.