CN2127126Y - Anti-leaking device of pump - Google Patents

Abstract

The utility model relates to an anti-leaking device used for an industrial centrifugal pump or a rotor type volume electric pump. The utility model is the sealed integration comprising a cooling electric fan, a motor casing which can bear definite pressure, the box body of a speed reducer, a drive shaft, a casing tube, a leaking supercharging tank, a pump and a filling medium. The utility model has the advantages of simple structure and good tightness. The anti-leaking device used for an industrial centrifugal pump or a rotor type volume electric pump solves the avoidless disadvantages of running, overflow, dripping of dynamic seal of other machines. The utility model has the advantages of simple structure and good tightness. The anti-leaking device used for an industrial centrifugal pump or a rotor type volume electric pump can convey viscous mediums of about 300 DEG C.

Description

Anti-leaking device of pump

The utility model relates to industrial centrifugal pump and rotator type volume electric pump.

Existing conventional pump driving shaft relies on the seal ring sealing.The wearing and tearing of pump shaft and seal ring and pump shaft are beated and can be caused air gap, and the pump medium very easily spills outside the pump housing under differential pressure action.Magnetic force driving pump relies on internal-external magnetic steel and separation sleeve that power is imported in the pump, makes the pump stationary seal, so there is not leakage, but the pressure of pump generation only has 0.4MPa, and operating temperature and can not be carried viscous medium in+100 ℃.The utility model purpose is the seal arrangement that proposes a kind of pump, makes to be transferred medium and not have external leakage, and need not to change seal ring, and have simple in structure.Easy processing characteristic.

The utility model comprises that closed motor, speed reducer and drive-shaft tunnel, booster jar and the band of a bearing certain pressure leak the pump housing in chamber.Above-mentioned component-assembled is got up, and use metal tube UNICOM, it is whole to constitute sealing, charges into stuffing such as air, liquid, grease in its chamber, to set up an airtight cavity that equates with pump pressure, realizes the anti-leak purpose.

All adopt static seal between motor casing, the decelerator body, drive-shaft tunnel and the pump.Motor outlet cable also will seal, and the mounting arrangements mode is arranged horizontally, and also can be arranged vertically, and motor is in the upper part, and pump is in following position, better effects if.

The utility model is so that to carry 280 ℃ of bitumenpumps be example and its action principle is described.

Pressure: 2.5MPa

Fed sheet of a media temperature: 280 ℃

Flow: 30m ³/ h

Rotating speed: 50-500 rev/min

Charge into lubricating oil in the deceleration cabinet during pump assembling, play lubricated and filling effect.Bentonite grease is added in nearly pump end in the drive-shaft tunnel, its objective is to utilize the grease viscous resistance to overcome to be transferred medium because of than the great or high potential energy that flows downward that has in position.

The available bicycle pump in pump assembling back is inflated to pump work pressure by valve and metal tube to each chamber.Flow into (outflow) booster jar because pump hyperbaric chamber fed sheet of a media leaks during pump running (stall), cause that cavity pressure increases (reduction), pressurized air enters (outflow) motor cavity, speed reducer chamber, drive-shaft tunnel, makes it to keep balance with pump pressure.Elimination causes the external leakage factor because of the pump inside and outside differential pressure.

The motor afterbody is equipped with electric fan motor is carried out air cooling.Drive-shaft tunnel has lens observable shaft drive situation, is provided with the heat radiation wing plate on drive-shaft tunnel.

The leakage preventer of the utility model pump has been set up an airtight integral body, does not have motive sealing, has fundamentally solved the external leakage problem.Make pump free from environmental pollution, reduced the loss of leaking.Owing to cancelled the shaft seal circle, reduced the frictional resistance between seal ring and the pump shaft, reduced the rotation power consumption, thereby the efficient height.

Annotate:, can in motor cavity speed reducer chamber and drive-shaft tunnel, all be full of fluid if adopt the oil immersed type motor.The swollen chamber of rising of sequence number (17) at this moment should be installed, remove booster jar.

Accompanying drawing is a structure principle chart of the present utility model.Among the figure:

(1) pump

(2) metal tube

(3) booster jar

(4) observation mirror

(5) shaft coupling

(6) drive-shaft tunnel

(7) valve

(8) speed reducer

(9) reduction gear

(10) bear the pressure motor housing

(11) pressure gauge

(12) motor stator

(13) rotor

(14) fan bearing

(15) electric fan

(16) observation mirror

(17) the swollen chamber of rising

Claims (2)

1, a kind of leakage preventer that is used for industrial centrifugal pump and rotator type displacement pump is characterized in that:

(1) at the power motor afterbody cooling electric fan is housed;

(2) closed motor housing that can bearing certain pressure;

(3) speed reducer casing that can bearing certain pressure;

(4) observation mirror is arranged, the drive-shaft tunnel of heat radiation wing plate;

(5) booster jar of observation mirror is arranged;

(6) have the metal tubes that pressure gauge, valve are all pressed usefulness;

(7) pump case is provided with the connection port that leaks chamber and chamber.

The airtight integral body of forming by above-mentioned part.

2, requiring described closed motor that can bearing certain pressure according to right 1 can be the oil immersed type motor.

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