CN2451780Y

CN2451780Y - Slag pulp pump vanes capable of reducing wash-out wearing

Info

Publication number: CN2451780Y
Application number: CN 00251965
Authority: CN
Inventors: 任立军; 赵正江; 魏玉堂; 吴波
Original assignee: ZHONGNAN WEAR-RESISTANT MATERIALS Co Ltd CHANGSHA CITY
Current assignee: ZHONGNAN WEAR-RESISTANT MATERIALS Co Ltd CHANGSHA CITY
Priority date: 2000-11-29
Filing date: 2000-11-29
Publication date: 2001-10-03
Anticipated expiration: 2010-11-29

Abstract

The utility model relates to a slag pulp pump impeller capable of reducing wash-out wearing. The front end of a main vane of each impeller is provided with a ribbed slab at the part which ore slurry flows into the impeller, and the ribbed slab forms a whole body with the impeller to rotate with the impeller at the same speed in the same direction. The ribbed slab is arranged at the front end of the main vane of the impeller, when the utility model works, the wash-out wearing of the main vane of the impeller is greatly reduced; the main vane is worn by 1 mm per hour originally, when the ribbed slab is arranged, the wearing is 0.3 mm per hour, so that the service life of the impeller is greatly prolonged. In addition, the main vane keeps original shapes or sizes to ensure the normal efficiency of a slag pulp pump.

Description

Reduce the slurry pump impeller of erosive wear

The utility model relates to a kind of centrifugal type slurry pump of transfer ore pulp, particularly the impeller of slag stock pump.

Under hard (greater than the 600HV) condition of the centrifugal type slurry pump of transfer ore pulp, the solid particle in ore pulp thick (greater than 1mm), the erosive wear of impeller is very serious.The front end of the primary blades of impeller (being the position that ore pulp enters impeller) is subjected to the relative high speed impact of hard solid particle, and the top layer metal produces fatigue flake and cutting abrasion, and the length of primary blades is reduced.When serious, the length of primary blades per hour reduces 1mm, and impeller is too much scrapped because of the primary blades mill is short about 150 hours.

Improve the anti-impact erosion wearing and tearing ability of impeller, thereby carried out a large amount of work for many years both at home and abroad the working life of improving impeller, obtained significant effect.Be mainly reflected in two aspects: the one, research abrasion resistance material (adopting the higher high-abrasive material of scurf resistance); The 2nd, (structure) shape of improvement impeller primary blades (as the thickening primary blades), the waman pump that China's the eighties is introduced from Australia, improve aspect above-mentioned two, carry the ore pulp of thick, hard ore particle, brought up to 150 hour by 70 hours working life.The eighties initial stage, people were desirably in the working life of continuing to improve the slag stock pump on the basis of wamam pump, but do not make a breakthrough always so far.

In order further to improve the working life of slag stock pump, boost productivity, reduce production costs the special the utility model that proposes.

The utility model is at the front end of every impeller primary blades, and ore pulp enters the position of impeller, and gusset (be called for short quicken muscle) is set, and this gusset constitutes integral body with impeller, with impeller with fast equidirectional rotation.When ore pulp enters the impeller center, under the drive of gusset, produce rotation, sense of rotation is consistent with primary blades.Thus, when ore pulp enters between the primary blades active region, had certain peripheral velocity, ore pulp is greatly reduced with the relative peripheral velocity of primary blades, thereby reduced ore pulp significantly, and then alleviated the erosive wear of primary blades the washing away of primary blades.

Because the utility model is provided with gusset at the front end of impeller primary blades, the erosive wear of impeller primary blades reduces significantly during work, per hour wore and tore the originally impeller of 1mm of primary blades, be provided with quicken muscle after, the 0.3mm that per hour only weares and teares can increase substantially working life of impeller thus.In addition, primary blades keeps original shape and size, can make the efficient of slag stock pump keep normal.

Description of drawings:

Fig. 1: the impeller plan view that gusset is set;

Fig. 2: the A-A sectional drawing of accompanying drawing 1;

Fig. 3: the gusset binding is the impeller plan view of one;

Fig. 4: the A-A sectional drawing of accompanying drawing 3;

Fig. 5: gusset and primary blades adopt the impeller plan view of arc transition;

Fig. 6: the A-A sectional drawing of accompanying drawing 5;

Fig. 7: the B-B sectional drawing of accompanying drawing 5;

Fig. 8: it is the impeller plan view that one and gusset exceed front shroud of impeller that gusset links;

Fig. 9: the A-A sectional drawing of accompanying drawing 8.

The contrast accompanying drawing is further described the utility model below.

1, the inlet of impeller, the front end of every primary blades is provided with a gusset.The primary blades of this gusset and impeller and the back shroud of impeller connect as one by cast form, as shown in Figure 1.

2, the inlet of impeller, the front end of every primary blades is provided with a gusset.The primary blades of this gusset and impeller and the back shroud of impeller connect as one by cast form, and each piece gusset links together in the center portion of impeller, as shown in Figure 3.

3, the inlet of impeller, the front end of every primary blades is provided with a gusset.The primary blades of this gusset and impeller and the back shroud of impeller connect as one by cast form, and arc transition is adopted in gusset and primary blades joint, and the gusset back side and back shroud adopt chamfered transition, as shown in Figure 5.

4, the inlet of impeller, the front end of every primary blades is provided with a gusset.The primary blades of this gusset and impeller and the back shroud of impeller connect as one by cast form.Each piece gusset also links together in the center portion of impeller.And gusset exceeds the front shroud of impeller, can extend in the supply pipe of pump, as shown in Figure 8.

Claims

1. slurry pump impeller that reduces erosive wear, it is characterized in that: the utility model is at the front end of every impeller primary blades, ore pulp enters the position of impeller, gusset is set, this gusset and impeller constitute whole, with impeller with fast equidirectional rotation, the primary blades of this gusset and impeller and the back shroud of impeller connect as one by cast form.

2. impeller according to claim 1 is characterized in that: each piece gusset links together in the center portion of impeller.

3. impeller according to claim 1 is characterized in that: arc transition is adopted in gusset and primary blades joint, and the gusset back side and back shroud adopt chamfered transition.

4. impeller according to claim 1 is characterized in that: each piece gusset also links together in the center portion of impeller, and gusset exceeds the front shroud of impeller, can extend in the supply pipe of pump.