CN202117970U - Novel chemical centrifugal pump - Google Patents

Abstract

The utility model relates to a novel chemical centrifugal pump, which comprises a pump body, an impeller and a pump cover; the inner cavity of the pump body and the impeller are both uniformly coated with a macromolecular polyethylene composite layer; the centre of the impeller is provided with a screw hole which is matched with the screw of the top end of a shaft, the top end of the shaft is twisted into the impeller, and an anti-rotating sleeve is additionally arranged at the connection part of the top end of the shaft and the impeller. The macromolecular polyethylene composite layer is coated in the pump cavity, thereby effectively reducing the erosion from strong acid and strong base, improving the service life of the pump body, additionally strengthening the connection of the shaft and the impeller, and achieving more reasonable and effective design.

Description

A kind of novel chemical centrifugal pump

Technical field

The utility model relates to a kind of centrifugal pump, particularly relates to a kind of centrifugal pump that is used for chemical product.

Background technique

The chemical centrifugal pump that uses in the chemical industry; Especially at the also widely-used this centrifugal pump of industries such as pharmacy, oil, metallurgy, electric power, plating; When corrosive liquids such as the highly basic of long-term delivery high concentration, strong acid; Cause the pump housing and centrifugal pump internals to be corroded easily, so generally this type chemical centrifugal pump is short working life; And the general impeller of traditional centrifugal pump was fixed through nut with being connected all of axle, and when impeller ran up, set screw nut also can be followed motion together sometimes, did not rotate measure because of there being counnter attack, caused impeller to come off easily, damaged impeller and rotating shaft.

Summary of the invention

To the deficiency of above-mentioned technology, the utility model provides a kind of novel chemical centrifugal pump, and this pump has powerful corrosion resistance, can be used in the highly basic of various industries, the transportation of strong acid liquid.Moreover, the utility model has also fundamentally solved the problem that impeller comes off from axle easily, thereby has prolonged the working life of pump.

To achieve these goals, the utility model adopts following technical proposal:

A kind of novel chemical centrifugal pump comprises the pump housing, and impeller and pump cover have all applied the high-molecular polythene composite bed equably on the inner chamber of the pump housing and impeller;

The top screw thread that described impeller central authorities are provided with tapped hole and axle matches, the top of axle screwed in the impeller, and on the top and impeller joint increase rotation inhibiting cover of axle.

The beneficial effect of the utility model:, the decay resistance of the pump housing is greatly improved owing to all applied the high-molecular polythene material layer equably at the inner chamber and the impeller of the pump housing.Impeller is connected to have adopted and is threaded with axle, does not use nut to fix, and has increased the rotation inhibiting cover but be employed between impeller and the axle, thereby has guaranteed that impeller can not follow one to run up when moving, and has prolonged the working life of pump greatly; Simultaneously at a kind of composite polyethylene material of pump chamber liner, can weaken strong acid effectively, highly basic corrodes it, improves the life-span of the pump housing.In addition, the utility model has been strengthened being connected of axle and impeller, makes its design more reasonable, effective.That the utility model also has is simple in structure, long service life, cost advantage low, simple to operate.

Description of drawings

The structural representation of Fig. 1, the utility model.

Embodiment

As shown in Figure 1; The inner chamber of the pump housing 1 and the surface of impeller 3 are all applied one deck high-molecular polythene composite bed 2 (blacking part among Fig. 1) equably; Make strong acid, highly basic liquid when the inner chamber of the pump housing 1, all not constitute influence to it; Protect pump housing inner chamber and impeller not to be corroded effectively, thereby prolonged the life-span of pump.In order to improve the steadiness of axle 6 and impeller 3; Be provided with tapped hole in the central authorities of impeller 3 its screw thread with the axle top is matched, axle 6 tops are screwed in the impeller 3, and increase a rotation inhibiting cover 5, impeller 3 and 6 is connected with impeller 3 joints through being threaded on the top of axle 6; Do not use nut to fix; Guaranteed impeller 3 when high-speed motion, only more rotary impeller 3 engages with axle 6 tight more, fix the drawback that is caused and reduced the employing nut.One end opening of the pump housing 1, the other end use pump cover 4 to compress, and prevent that the liquid that is transported from spilling.

Those skilled in the art's simple substitution all is the protection domain of this patent with change.

Claims (2)

1. a novel chemical centrifugal pump comprises the pump housing (1), and impeller (3) and pump cover (4) is characterized in that: on the inner chamber of the pump housing (1) and impeller (3), all applied high-molecular polythene composite bed (2) equably.

2. novel chemical centrifugal pump according to claim 1; It is characterized in that: the top screw thread that described impeller (3) central authorities are provided with tapped hole and axle (6) matches; The top of axle (6) is screwed in the impeller (3), and increase anti-pivoted housing (5) in the top and impeller (3) joint of axle (6).

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