CN101982925B

CN101982925B - No-sealing pump and special motor thereof

Info

Publication number: CN101982925B
Application number: CN 201010500031
Authority: CN
Inventors: 张祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2013-02-13
Anticipated expiration: 2030-09-30
Also published as: CN101982925A

Abstract

The invention relates to a special motor for no-sealing pump and a pump applying the special motor. The special motor comprises a motor shaft, an upper end cover and a lower end cover; wherein the upper end cover is sheathed outside the motor shaft, the upper end of the upper end cover is extended with a shaft sleeve, the joint of the upper end cover and machine body and the joint of the lower end cover and the machine body are respectively provided with an O-shaped ring, and the inner cavity of the machine body forms a sealed cavity with the positions of motor shaft and shaft sleeve are open. The invention has the beneficial effects that: no friction type sealing is required, no leakage is achieved, no 'dropping', 'leaking', 'leaching' or 'bursting' phenomenon is produced, service life of pump is greatly prolonged, and production safety and economic benefit are improved.

Description

Unprssurized pump and motor special thereof

Technical field

The present invention relates to a kind of pump and motor special thereof, particularly a kind of pump that does not need the motor of mechanical seal and adopt this motor.

Background technology

Pump is to carry the indispensable equipment of fluid media (medium), traditional pump adopts the friction-type sealing mostly, main flow is mechanical seal and filled type sealing, because the High Rotation Speed of pump when work, so that friction sealed damage of friction-type sealing, cause and leak, the generation of " emitting " phenomenon " is oozed " in " dripping " " leakage ".Bring follow-up serial potential safety hazard, stop work and production has increased production cost.

Summary of the invention

For overcoming the defective of prior art, the technical problem to be solved in the present invention has provided a kind of space vapour lock unprssurized pump and motor special, its advantage is: need not the friction-type sealing, reach and do not leak, " ooze " generation of " emitting " phenomenon without " dripping " " leakage ", greatly prolong the useful life of pump, improved production security and economic benefit.

To achieve these goals, the invention provides a kind of motor special for the unprssurized pump class, comprise motor shaft, upper end cover and bottom end cover, upper end cover is enclosed within outside the motor shaft, an axle sleeve is extended in the upper end cover upper end, the junction of upper end cover and bottom end cover and body is respectively arranged with O type circle, and the body inner chamber forms the sealing cavity that only has motor shaft and axle sleeve place opening.

Body is provided with the motor cooling chamber outward.

A kind of unprssurized pump that adopts motor special, the pump housing is installed in outside the axle sleeve by O type circle hermetically, pump class impeller extends the impeller ennation of a circle circumferential protrusion, and the impeller ennation communicates with axle sleeve place air-tightness with the motor shaft of motor special, and impeller ennation and axle sleeve plug each other and form the vapour lock space.

Upper end cover and pump housing isolation are installed and are formed thermal insulation layer.

The impeller ennation is many concentric rings, and plugging each other with axle sleeve forms the vapour lock space.

The invention has the beneficial effects as follows: need not the friction-type sealing, reach and do not leak, " ooze " generation of " emitting " phenomenon without " dripping " " leakage ", greatly prolonged the useful life of pump, improved production security and economic benefit.

Description of drawings

The structural representation of Fig. 1, motor special;

The pump structure schematic diagram of Fig. 2, installation motor special;

Other a kind of enforcement illustration (omission bottom) of the pump of Fig. 3, installation motor special;

Embodiment

Shown in Figure 1, a kind of motor special for the unprssurized pump class, comprise motor shaft 1, upper end cover 3 and bottom end cover 7, upper end cover 3 is enclosed within outside the motor shaft 1, an axle sleeve 2 is extended in upper end cover 3 upper ends, upper end cover 3 and bottom end cover 7 are respectively arranged with O type circle 8 with the junction of body 6, and body 6 inner chambers form the sealing cavity that only has motor shaft 1 and axle sleeve 2 place's openings.Interior magnetic coil 5 can not intake.Set up axle sleeve 2 on the motor upper cover 3 and 8 hermetic seals of O type circle are installed on the body 6; The bottom end cover 7 airtight designs in axial bottom are set up O type circle 8 airtight closing again and are installed on the body 6; Terminal box 9 places carry out the airtight processing of closing, and allow motor body 6 inner chambers form and only have motor shaft 1 and axle sleeve 2 place's openings, and up or down, all the other are the airtight motor cavity body that closes all.The body 6 outer motor cooling chambers 10 that are provided with, like this motor cooling, thermal diffusivity is better.

As shown in Figure 2, a kind of unprssurized pump that adopts motor special, the pump housing 15 is installed in outside the axle sleeve 2 hermetically by O type circle, pump class impeller 11 extends the impeller ennation 12 of a circle circumferential protrusion, and impeller ennation 12 communicates with axle sleeve 2 place's air-tightness with the motor shaft 1 of motor special, and impeller ennation 12 plugs each other with axle sleeve 2 and forms vapour lock space 14.Upper end cover 3 is installed with the pump housing 15 isolation and is formed thermal insulation layer 13.The pump housing 15 is installed in by O type circle sealing in the middle of the motor shaft sleeve 2, and pump class impeller 11 sets up that impeller ennation 12 and Special electric arbor are airtight to close installation, and impeller ennation 12 plugs each other with axle sleeve 2 and forms vapour lock space 14.Because the motor cavity body is air-tightness, inside only has gas, and only have a motor shaft 1 and axle sleeve 2 place's openings, other place is all airtight, after being installed on the motor, the confined space that the extension 12 of impeller is inboard and motor shaft 1 and axle sleeve 2 are interior communicates, gas in the confined space in the motor has certain pressure, the outer liquid (generally being water) of motor is positioned at the outside of the extension 12 of impeller, like this in motor under the pressure-acting of gas, the liquid of extension 12 outer rings of impeller is owing to there being the effect of internal gas pressure, so, liquid can not enter motor internal, plays the effect of positive confinement.

As shown in Figure 3, impeller ennation 12 is many concentric rings, and plugging each other with axle sleeve 2 forms vapour lock space 14.Other structure such as Fig. 2 say that like this extension 12 of impeller becomes a plurality of concentric circless, have prolonged like this path of liquid flow, and sealing effectiveness is better like this.

The present invention utilizes the gas in the vapour lock space to take the vapour lock space, and medium can't be entered in the motor machine chamber, vapour lock space, need not the friction-type sealing, and reaches the effect of sealing.

Claims

1. the pump of a motor special, it is characterized in that: motor special comprises motor shaft (1), upper end cover (3) and bottom end cover (7), upper end cover (3) is enclosed within outside the motor shaft (1), it is characterized in that: an axle sleeve (2) is extended in upper end cover (3) upper end, upper end cover (3) and bottom end cover (7) are respectively arranged with O type circle (8) with the junction of body (6), body (6) inner chamber forms the sealing cavity that only has motor shaft (1) and axle sleeve (2) to locate opening, the outer motor cooling chamber (10) that is provided with of body (6), the pump housing (15) is installed in outside the axle sleeve (2) hermetically by O type circle, pump class impeller (11) extends the impeller ennation (12) of a circle circumferential protrusion, pump class impeller and Special electric arbor be airtight to close installation, the impeller ennation is that impeller is towards the extended circumferential protrusion of axle sleeve side direction, and impeller ennation (12) is located air-tightness with the motor shaft (1) of motor special with axle sleeve (2) and is communicated, and impeller ennation (12) plugs each other with axle sleeve (2) and forms vapour lock space (14).

2. the pump of a kind of motor special according to claim 1 is characterized in that: upper end cover (3) and the pump housing (15) isolation installation formation thermal insulation layer (13).

3. the pump of a kind of motor special according to claim 2, it is characterized in that: impeller ennation (12) is many concentric rings, plugging each other with axle sleeve (2) forms vapour lock space (14).