CN2168103Y

CN2168103Y - mechanical-electric pipe pump

Info

Publication number: CN2168103Y
Application number: CN 93220364
Authority: CN
Inventors: 罗海
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-03
Filing date: 1993-08-03
Publication date: 1994-06-08
Anticipated expiration: 2003-08-03

Abstract

The utility model relates to an electromechanical integral pipe pump which is composed of a stator, a rotor assembly, and a mechanical sealing joint assembly. The rotary shaft of the rotor assembly is a hollow shaft, an impeller is installed at one end of the inner cavity of the hollow shaft, and a pump housing is omitted. As a result, the utility model has the advantages of simple and compact structure, little materials input, small size, and low cost. The sealing structure of the utility model is unique, the sealing surface has compensation action, and the performance is reliable. The electromechanical integral pipe pump is suitable for being used on pipes delivering liquids.

Description

mechanical-electric pipe pump

The utility model relates to a kind of pipeline mounted pump, and particularly a kind of the unite two into one pipeline mounted pump of body of motor, pump, being mainly used in need be in the delivery line of liquid supercharging.

Existing various pipes pump major part is to be separated into the main structure characteristics with motor and pump, and this structure exists many defectives, and is low as mechanical, electrical conversion efficiency, and the manufacturing operation is many, high material consumption, and it is big to take up room during installation etc.Utility model patent (number of patent application 88216537,91229248) and patent of invention (application number 91110492), these pumps still exist many drawbacks, the just motor that has combines with the compactness of pump, still have two rotors, two housings, the runner that has is very complicated, effective drift diameter is little, influence flow efficiency, and the poor stability of bearing and motor, seal durability is short, maintenance inconvenience, the manufacturing operation is many etc.

The purpose of this utility model will overcome above-mentioned defective and drawback exactly, the very compact electromechanical integration pipeline mounted pump of structure that provides a kind of motor and pump to unite two into one.

Above-mentioned purpose is realized by following technological scheme:

It is made up of motor stator, rotor assembly, mechanical seal adapter assembly.

Rotor assembly by hollow shaft, be positioned at the squirrel-cage winding at hollow shaft middle part, place the impeller and the bearing of hollow shaft inner chamber one end to form, rotor assembly links together with screw and stator case by bearing support, when rotor rotation, be transferred liquid and enter, after the impeller supercharging, export from the hollow shaft the other end from hollow shaft one end.Such structure makes the cooling of motor by the air-cooled liquid cooling that becomes, and can save air-cooled facility, cuts down the consumption of energy.

The mechanical seal adapter assembly is by the SEALING FITTING shell that is installed in rotor hollow shaft two ends, friction ring, spline pin and other Sealing are formed, two ventilation overflow holes are arranged on the SEALING FITTING shell, its sealing principle is the seal form that adopts end face seal and conical surface seal to combine, end face seal is that the hollow shaft end face by friction ring and rotor constitutes an end-face friction and pays, and the formation sealing surface, seal by friction ring conical surface O type circle between SEALING FITTING and the friction ring, when rubbing surface weares and teares, continuous elongation along with spring, seal ring moves axially and compensates, simultaneously owing to spline pin on the friction ring stretches into corresponding two ventilation overflow holes on the SEALING FITTING shell, friction ring can only be moved forward, the small amount of liquid that overflows from sealing surface flows to outside the pump housing by the ventilation overflow hole, this structure long service life, sealability is stable, and is reliable and secure.

Fig. 1 electromechanical integration pipeline mounted pump master pseudosection;

Below in conjunction with Fig. 1 and embodiment the technical solution of the utility model is described further:

This model utility is made up of stator, rotor assembly, mechanical seal adapter assembly as shown in Figure 1.

Rotor assembly is made up of hollow shaft (9), squirrel cage rotor winding (10), the impeller (16) that places hollow shaft inner chamber one end, bearing (13) and bearing support (8).Squirrel cage rotor winding (10) press-fits in the middle part of hollow shaft (9), and at an end of hollow shaft (9) the inner chamber impeller (16) of packing into, impeller (16) and hollow shaft (9) internal chamber wall be connected available welding, technology such as bonding, rotor assembly is linked together by screw (12) and stator (11) by bearing support (8).

The mechanical seal adapter assembly is made up of SEALING FITTING shell (1), friction ring (5), spline pin (6), O RunddichtringO (4), trim ring (13), stage clip (2), jump ring (15).This assembly is linked together by screw (7) and bearing support (8).SEALING FITTING shell (1) has ventilation overflow hole (14), makes the small amount of liquid that overflows from sealing surface pass through this orifice flow outside the pump housing.

During assembling, after the motor stator (11) of at first rotor assembly being packed into is interior, the bearing support (8) that bearing will be housed again is respectively charged into the two ends of rotor hollow shaft (9), and it is fastened on respectively on stator (11) two ends with screw (12), at this moment rotor assembly and stator are connected as a single entity, the main body assembling of this pump is promptly accused and is finished, then again two mechanical seal joint shell (1) are respectively charged into hollow shaft (9) two ends, and connect on bearing support (8) with screw (7), the friction ring (5) of packing into successively again, spline pin (6), O RunddichtringO (4), trim ring (3), stage clip (2), use jump ring (15) chucking at last, finish whole assembling works.

After motor was changed, the rotor of high speed rotating was with the end input of liquid from hollow shaft (9), after impeller (16) supercharging, from the other end output of hollow shaft (9).

This model utility is simple in structure, and compactness is few with material, and boundary dimension is little, good seal performance, and cost is low, is highly suitable for carrying on the pipeline of liquid.

Claims

1, a kind of electromechanical integration pipeline mounted pump is made up of motor stator, rotor assembly and mechanical seal adapter assembly.It is characterized in that: the rotating shaft of rotor assembly is hollow shaft (9), the impeller of pump (16) places the one end, squirrel cage rotor winding (10) is positioned at the middle part of hollow shaft (9), be separately installed with bearing (13), bearing support (8) at the two ends of hollow shaft (9), bearing support (8) and stator (11) linked together with screw (12).

2, electromechanical integration pipeline mounted pump as claimed in claim 1, it is characterized in that: the mechanical seal adapter assembly that adopt at the hollow shaft two ends is by SEALING FITTING shell (1), friction ring (5), spline pin (6), O RunddichtringO (4), trim ring (3), stage clip (2), jump ring (15) is formed, and with screw (7) SEALING FITTING shell (1) and bearing support (8) is linked together.

3, electromechanical integration pipeline mounted pump as claimed in claim 2,, it is characterized in that: ventilation overflow hole (14) is arranged respectively on shell, and spline pin (6) inserts respectively in it, and friction ring (5) can only be moved axially.