CN2482597Y

CN2482597Y - Magnetic drive corrosion resistant fluorine plastic liner pump

Info

Publication number: CN2482597Y
Application number: CN 01229355
Authority: CN
Inventors: 易捷; 刘泉明
Original assignee: China National Petroleum Corp
Current assignee: China National Petroleum Corp
Priority date: 2001-06-29
Filing date: 2001-06-29
Publication date: 2002-03-20
Anticipated expiration: 2011-06-29

Abstract

A high corrosion resistance magnetic driving fluorine plastics lining pump for conveying a plurality of acid and alkali including hydrofluoric acid with specific gravity less than 1.8 comprises a spacing collar 3, an internal magnetic body 7, a vane 10, etc. One end of a shaft 13 is arranged on the spacing collar 3, the internal magnetic body 7 is provided on the shaft 13, the vane 10 is arranged in a pump body 14 and on the shaft 13, and the internal magnetic body 7 is connected with the vane 10. A magnetic transmission shaft coupling is used to reinforce the spacing collar to separate a master magnetic body arranged on a motor and a slave magnetic body to drive the vane to rotate. High performance and corrosion resistance structural materials are used for the pump flowing channel, the vane, the shaft and the bearing, thereby the sealing is good, and no corrosion exists.

Description

The corrosion-resistant fluoroplastics lining pump of magneto drive

The utility model relates to and a kind ofly is used for carrying proportion less than 1.8, comprises the no-leakage pump of being able to bear strong corrosion of the various acid-base solutions of hydrofluoric acid, specifically, is the corrosion-resistant fluoroplastics lining pump of magneto drive.

At present, the domestic pump that is used to carry strongly corrosion liquid, a class is a Mechanical Sealed Type, follows the design principle of conventional pumps on the structure substantially; Another kind of employing magnetic transmission seal technology, with regard to the whole plastics of pump head, this class magnetic force corrosion-resistant pump that impeller and inner magnet are combined as a whole, the duty parameter that is satisfied is tending towards miniaturization, is 12.5m and satisfy flow Q ³/ h～30m ³/ h, lift H is 20～50m, temperature is-20 ℃～80 ℃, power is 2.2～7.5 kilowatts, the magnetic drive pump that touches liquid position employing resistant material of this class working condition of rotating speed 3000r/min, follow the mentality of designing of conventional magnetic drive pump mostly, the main driven shaft transmission, axle is a revolving part, driving shaft drives driven shaft by bearing housing, the corresponding mechanism of driven shaft component design satisfies its runnability, separation sleeve outer lining stainless steel sleeve, its overall construction design complexity, cost height, interchangeability is poor, installation and maintenance inconvenience.The pump of foreign same type, power is identical, it is big that inner magnet and outer magnet design, and the inside of inner magnet is filled to the artificial stone, the similar general emery wheel of its material, this makes that the inner magnet manufacturing process is complicated, because volume is big, makes and the also length, bigger of design simultaneously of separation sleeve and pump shaft cause pump when work, rigidity is relatively poor, and the inner magnet beat increases.

The purpose of this utility model is to provide a kind of working condition that both satisfied, and the various acid of ability again, caustic corrosion do not have the corrosion-resistant fluoroplastics lining pump of magneto drive that leaks simultaneously.

The utility model is achieved in that and includes outer magnetic cylinder 2, separation sleeve 3, back thrust ring 4, bearing 5, spacer 6, inner magnet 7, stop pin 8, seal ring 9, impeller 10, go into choma 11, preceding thrust ring 12, axle 13, the pump housing 14, belt material inlet flange 15, in the outer magnetic cylinder 2 separation sleeve 3 is arranged, axle 13 1 ends place on the separation sleeve 3, on the axle 13 bearing 5 is arranged, between axle 13 and the bearing 5 spacer 6 is arranged, on the axle 13 inner magnet 7 is arranged, impeller 10 is arranged in the pump housing 14 and on axle 13, separation sleeve 3 cooperates installation with the pump housing 14, seal ring 9 is arranged therebetween, have in the pump housing 14 into choma 11, preceding thrust ring 12 has belt material inlet flange 15 on the end of axle 13.

Back thrust ring 4 is arranged between separation sleeve 3 and the bearing 5.

Axle 13 adopts two supports toughness to connect, and an end is arranged on the separation sleeve 3, and the other end is connected with belt material inlet flange 15.

Inner magnet 7 is connected with impeller 10, and stop pin 8 is housed.

Impeller 10 is a split blade type, and anter studs with choma, and matches with preceding thrust ring 12.

Bearing 5 all is enclosed in pump housing inside.

Advantage of the present utility model is: adopted the magnetic power delivered coupling, strengthen that separation sleeve will be connected active magnet on the motor and the driven magnet of impeller rotation is separated, pump runner, impeller, axle, bearing adopt the erosion-resisting structural material of high-performance fully, no corrosion phenomenon, good seal.Running steadily can be widely used in petrochemical industry.Metallurgy, military project, medicine etc. are carried the place of deep-etching, poisonous, inflammable and precious liquid.

Accompanying drawing is a structural representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is further described:

This device is a fixed shaft type impeller rotating centrifugal pump, axle 13 adopts two supports toughness to connect, one end is arranged on the separation sleeve 3, separation sleeve 3 becomes cantilever position, its elastic strain has certain buffer function to the anti-load of axle, and the other end is installed on the fluoroplastics lining spare of belt material inlet flange 15, is static element, the employing ceramic process is made, and has good chemical stability.The hardness height, good rigidly, the radial bearing that is contained on the inner magnet 7 is a kind of carbon material, in medium, form one pair of good fastness with pump shaft 13, be contained in thrust bearing and 4 pairings of back thrust ring on the inner magnet 7 simultaneously, press the size of inner magnet 7 optimal design by spacer 6 and place bearing 5, bearing 5 all is enclosed in pump housing inside, utilizes medium itself to be lubricated cooling.

Impeller 10 adopts with inner magnet 10 and is threaded, and they connect together and form the rotor portion of pump, and interchangeability is good.Impeller 10 is made for the split blade type fluoroplastic, and anter studs with the choma of wear-and corrosion-resistant, with preceding thrust ring 12 pairings, is used for the axial force of balance remnants, and rear panel fuses by contiguous block and the anter that pressing mold forms; Inner magnet 7 optimal design, the internal material of inner magnet 7 adopts nonmagnetic metal, does not adopt the artificial stone and do not resemble external product, has simplified manufacturing process greatly, and size takes into account row optimization from the power angle, and weight is the lightest, simultaneously.Make the size of separation sleeve 3 and axle 13 reduce greatly, promptly make the rigidity of separation sleeve 3, axle 13 increase, improved its anti-load-carrying ability, the weight saving of inner magnet 7 simultaneously, the centrifugal force of generation also reduces, this has just improved the working condition of pump, the whole secondary wrapper technology of the inner magnet that adopts, making inner magnet 7 seam crossing fusions is one, the performance of magnetic material is not affected, the intensity of seam crossing has guaranteed the demand of high performance corrosion-proof considerably beyond sealing intensity.

Claims

1. the corrosion-resistant fluoroplastics lining pump of magneto drive, include outer magnetic cylinder (2), separation sleeve (3), back thrust ring (4), bearing (5), spacer (6), inner magnet (7), stop pin (8), seal ring (9), impeller (10), go into choma (11), preceding thrust ring (12), axle (13), the pump housing (14), belt material inlet flange (15), it is characterized in that: separation sleeve (3) is arranged in the outer magnetic cylinder (2), axle (13) one ends place on the separation sleeve (3), on the axle (13) bearing (5) is arranged, between axle (13) and the bearing (5) spacer (6) is arranged, on the axle (13) inner magnet (7) is arranged, impeller (10) is arranged in the pump housing (14) and on axle (13), separation sleeve (3) cooperates installation with the pump housing (14), seal ring (9) is arranged therebetween, have in the pump housing (14) into choma (11), preceding thrust ring (12) has belt material inlet flange (15) on the end of axle (13).

2. the corrosion-resistant fluoroplastics lining pump of magneto drive according to claim 1 is characterized in that: between separation sleeve (3) and the bearing (5) back thrust ring (4) is arranged.

3. the corrosion-resistant fluoroplastics lining pump of magneto drive according to claim 1 is characterized in that: axle (13) adopts two supports toughness to connect, and an end is arranged on the separation sleeve (3), and the other end is connected with belt material inlet flange (15).

4. the corrosion-resistant fluoroplastics lining pump of magneto drive according to claim 1 is characterized in that: inner magnet (7) is connected with impeller (10), and stop pin (8) is housed.

5. the corrosion-resistant fluoroplastics lining pump of magneto drive according to claim 1 is characterized in that: impeller (10) is a split blade type, and anter studs with choma, and matches with preceding thrust ring (12).

6. the corrosion-resistant fluoroplastics lining pump of magneto drive according to claim 1 is characterized in that: bearing (5) all is enclosed in pump housing inside.