CN201218227Y - Fire-resistant impeller of plastic pump - Google Patents

Abstract

The utility model relates to a high temperature resistant impeller for a plastic pump. A plastic hub is coated outside a metal bushing; a plurality of blades are arranged on the upper end surface of the hub; a plurality of metal pins are arranged in each blade; and the metal pins passing through the hub are fixedly connected with the metal bushing. The root of each blade has high strength, and the root is not easy to tear even at higher operating temperature; and the utility model has the advantages of reasonable and reliable structure, and long service life.

Description

The high temperature resistant impeller of plastic pump

Technical field

The utility model relates to a kind of impeller of plastic pump.

Background technique

Existing common plastics chemical pump is because blade working partly is overall plastic structure, and in use institute's heatproof degree generally is no more than 120 ℃.Root deliquescing at the high-temperature condition lower blade causes tearing easily damage, for fear of this problem, usual way is to come the reinforced blade hot strength by the thickness that strengthens plastic blade, can improve the temperature tolerance of some plastics chemical pumps in a way, but the increase vane thickness can bring the loss on the pump hydraulic performance.

The model utility content

The purpose of this utility model is to provide a kind of plastic pump high temperature resistant impeller, and at high temperature the root of its blade still can guarantee intensity preferably.

For achieving the above object, the utility model adopts following scheme: the high temperature resistant impeller of a kind of plastic pump, and metal lining is coated with the plastics wheel hub, is fixed with some blades on the wheel hub upper-end surface, be provided with the number of metal pin in each blade, metallic pin passes wheel hub fixedlys connected with metal lining.

By such scheme as seen, owing to set up metallic pin in each blade, make the intensity of root of blade be improved, even under higher operating temperature, root also is not easy to tear.

The utility model is rational in infrastructure, reliable, long service life.

Description of drawings

Fig. 1 the utility model one embodiment's structural representation;

The A-A sectional view of Fig. 2 Fig. 1;

The B-B sectional view of Fig. 3 Fig. 1.

Embodiment

Further specify the utility model below in conjunction with embodiment and accompanying drawing.

Referring to Fig. 1, Fig. 2, Fig. 3

This improved plastic pump impeller has metal lining 4 and plastics wheel hub 1, is fixed with some blades 2 on plastics wheel hub 1 upper-end surface, is provided with number of metal pin 3 in each blade 2, and metallic pin 3 passes plastics wheel hub 1 and is fixedly connected by welding with metal lining 4.After metallic pin 3 fixed, blade 2 was coated on the outside of metallic pin 3 by plastic mode of touching pressure.

As seen from Figure 3, blade 2 width from top to bottom increases gradually, and the joint of the upper-end surface of the root of blade 1 and wheel hub 1 is smooth fillet.

This use is novel by metallic pin is set in blade, makes the maximum operation (service) temperature of impeller can bring up to 180 ℃, and big leap ahead the working life of impeller.

Claims (2)

1, the high temperature resistant impeller of a kind of plastic pump, metal lining (4) is coated with plastics wheel hub (1), wheel hub (1) is fixed with some blades (2) on the upper-end surface, it is characterized in that: be provided with number of metal pin (3) in each blade (2), metallic pin (3) passes plastics wheel hub (1) fixedlys connected with metal lining (4).

2, the high temperature resistant impeller of plastic pump according to claim 1 is characterized in that: blade (2) width from top to bottom increases gradually, and the joint of the upper-end surface of the root of blade (2) and wheel hub (1) is smooth fillet.

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