CN201486852U

CN201486852U - Magnetism-driven twin-screw pump

Info

Publication number: CN201486852U
Application number: CN2009201873457U
Authority: CN
Inventors: 程飞; 徐文生
Original assignee: HUANGSHAN INDUSTRIAL PUM MANUFACTURE Co Ltd
Current assignee: HUANGSHAN INDUSTRIAL PUM MANUFACTURE Co Ltd
Priority date: 2009-09-04
Filing date: 2009-09-04
Publication date: 2010-05-26
Anticipated expiration: 2019-09-04

Abstract

The utility model relates to a magnetism-driven twin-screw pump which comprises a twin-screw pump and an electric motor. The twin-screw pump comprises a pump body, a driving screw, a driven screw, a front end cover and a rear end cover; an inner magnetic loop is arranged on the extending end of the driving screw; more than six magnets are uniformly distributed in the radial direction of the outer circumference of the inner magnetic loop; the inner magnetic loop is sleeved with a sealing and isolating cover; and the open end of the sealing and isolating cover is connected with the front end cover. The twin-screw pump also comprises an outer magnetic loop; more than six magnets are uniformly distributed in the radial direction of the inner circumference of the outer magnet loop; the magnets on the inner magnetic loop correspond to the magnets on the outer magnetic loop for forming a magnetic system; the small end of the outer magnetic loop is connected with the output shaft of the electric motor; the big end of the outer magnetic loop is sleeved on the inner magnetic loop; and the front end cover of the twin-screw pump is connected with the output end surface of the electric motor through a bracket. The magnetism-driven twin-screw pump fundamentally solves the problem of a mechanical seal pump used in the liquid transfer process that liquid runs out, overflows, drips or leaks, so that the leakage phenomenon cannot happen. The magnetism-driven twin-screw pump has the advantages of compact structure, small installation space and convenient installation and use.

Description

The magneto drive two screw pump

Technical field

The utility model relates to a kind of magnetic force driving pump, specifically the magneto drive two screw pump.

Background technique

Along with environmental protection more and more is subjected to the attention in the whole world and the issuing and implementation of corresponding environmental regulation, magnetic force driving pump has solved the pumping problem of property material of easily loosing in the industrial system because of no leakage, static seal and low noise, thereby is described as the high-tech product of environment protection type.In recent years, the magnetic force driving pump growth momentum is powerful, the pump with mechanical seal that just progressively replaces identical performance, be widely used in the industrial systems such as oil field, oil refining, petrochemical industry, Chemicals, chemical fertilizer, nuclear power, metallurgy, food and pharmacy, carried inflammable, explosive, poisonous medium that does not contain solid particle and the medium that does not allow to seal pollution.Be not suitable for carrying the medium that contains ferromagnetic substance.The magnetic force screw pump is compared with the magnetic drive pump of other form, has the following advantages: 1, self-priming performance is good, and 2, low noise, pulsating movement free does not have medium and to shear and extruding; 3, long service life; 4, high efficiency.Two screw pump series is used for carrying the liquid medium that can contain microimpurity, non-corrosiveness and unlubricated property, is mainly used in the occasion that requires zero leakage, as some process industries and Environmental Engineering etc.

Summary of the invention

Carry for the zero leakage of satisfying the liquid medium that can contain microimpurity, non-corrosiveness and unlubricated property, the utility model provides a kind of magneto drive two screw pump.

Concrete architecture advances design proposal is as follows:

The magneto drive two screw pump comprises two screw pump and motor, and described two screw pump comprises the pump housing, active screw rod, driven screw rod, front cover and rear end cover, and initiatively an end of screw rod extends outside the front cover;

The overhanging end of described active screw rod is provided with internal magnetic ring 10, and the excircle of described internal magnetic ring 10 directly upwards is laid with the magnet A13 more than six, and its outer cover is provided with seal isolation cover 11; Described seal isolation cover 11 is that an end seals the uncovered cylindrical tube shape of an end, and the open-mouth end of cylindrical tube shape is connecting front cover; Also comprise outer magnetic ring 9, the inner circumference of described outer magnetic ring 9 directly upwards is laid with the magnet B14 more than six, and magnet A13 on the internal magnetic ring 10 and the mutual corresponding composition magnetic force systems of the magnet B14 on the outer magnetic ring 9; The portlet of described outer magnetic ring 9 is connecting motor output shaft 15, and large port is set on the internal magnetic ring 10, is connected by support 8 between the front cover of described two screw pump and the output end face of motor.

Useful technique effect of the present utility model is embodied in the following aspects:

1, magnetic drive part of the present utility model is made up of inside and outside magnet rotor; Spacer is isolated with interior magnet rotor and medium and outer magnet rotor; Outer magnet rotor utilizes the magnetic coupling characteristic to drive interior magnet rotor rotation by motor driving during rotation, finish non-contacting transmission of torque, thereby reach the purpose of driven pump, referring to Fig. 1.The seal isolation cover is isolated fully with interior magnet rotor and medium and outer magnet rotor, thereby magnetic drive pump is different from other pump that uses mechanical seal, and stationary seal has only static seal, fundamentally solved the run, drip, leak problem of pump with mechanical seal in the FLUID TRANSPORTATION, having accomplished does not have leakage fully.

2, the utility model magnetic drive pump is simple and compact for structure.Overload protective function is arranged during transferring power, and the maintenance and the maintenance workload of magnetic drive pump are little.Magnetic drive pump, safe and reliable to operation, noise is low, does not have to leak, and technology cleaned in situ safety is industry environmental protection type product truly

3. need not independent lubricated and cooling water, reduced energy consumption.

4. become synchronously by the coupling transmission and drag, do not have contact and friction.Power consumption is little, efficient is high, and have damping vibration attenuation function, when having reduced motor vibration the cavitation erosion vibration having been taken place for the influence of pump and pump to the influence of motor.

5. pump structure compactness, installing space is little, is convenient to coordinative composition of equipments and installs and uses.

6. pump, motor can adopt straight connection type, see Fig. 1.

7. when transshipping, the relative slippage of inside and outside magnet rotor has protective action to motor, pump.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is the A-A sectional view of Fig. 1,

Fig. 3 is the B-B sectional view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Referring to Fig. 1, the magneto drive two screw pump comprises two screw pump and motor 12, and two screw pump comprises the pump housing 4, active screw rod 3, driven screw rod 2, front cover 7, rear end cover 1, bearing 5 and seal ring 6, and initiatively an end of screw rod 3 extends front cover 7 outsides.

Initiatively by key internal magnetic ring 10 is installed on the overhanging end of screw rod 3, the excircle of the internal magnetic ring 10 uniform ten magnet A13 that are equipped with that directly make progress, its outer cover is provided with seal isolation cover 11; Seal isolation cover 11 is that an end seals the uncovered cylindrical tube shape of an end, and the open-mouth end of cylindrical tube shape is connecting front cover 7; Also comprise outer magnetic ring 9, the inner circumference of outer magnetic ring 9 directly upwards is laid with ten magnet B14, and magnet A13 on the internal magnetic ring 10 and the mutual corresponding composition magnetic force systems of the magnet B14 on the outer magnetic ring 9; The portlet of outer magnetic ring 9 is connecting motor output shaft 15, and large port is set on the internal magnetic ring 10, is connected by support 8 between the front cover 7 of two screw pump and the output end face of motor.

During work, outer magnetic ring 9 is driven by motor 12, utilizes the magnetic coupling characteristic to drive internal magnetic ring 10 rotations during rotation, finishes non-contacting transmission of torque, thereby reaches the purpose of driven pump.

Claims

1. the magneto drive two screw pump comprises two screw pump and motor, and described two screw pump comprises the pump housing, active screw rod, driven screw rod, front cover and rear end cover, and initiatively an end of screw rod extends outside the front cover, it is characterized in that:

The overhanging end of described active screw rod is provided with internal magnetic ring (10), and the excircle of described internal magnetic ring (10) directly upwards is laid with the magnet A (13) more than six, and its outer cover is provided with seal isolation cover (11); Described seal isolation cover (11) is that an end seals the uncovered cylindrical tube shape of an end, and the open-mouth end of cylindrical tube shape is connecting front cover; Also comprise outer magnetic ring (9), the inner circumference of described outer magnetic ring (9) directly upwards is laid with the magnet B (14) more than six, and magnet A (13) on the internal magnetic ring (10) and the mutual corresponding composition magnetic force systems of the magnet B (14) on the outer magnetic ring (9); The portlet of described outer magnetic ring (9) is connecting motor output shaft (15), and large port is set on the internal magnetic ring (10), is connected by support (8) between the front cover of described two screw pump and the output end face of motor.