CN200946590Y

CN200946590Y - Stainless steel stamping and welding impeller

Info

Publication number: CN200946590Y
Application number: CN 200620044308
Authority: CN
Inventors: 张圣建; 肖芬; 乔新宇; 周德敏
Original assignee: Shanghai Kaiquan Pump Group Co Ltd
Current assignee: Shanghai Kaiquan Pump Group Co Ltd
Priority date: 2006-07-27
Filing date: 2006-07-27
Publication date: 2007-09-12
Anticipated expiration: 2016-07-27

Abstract

The utility model relates to the technical field of water pump parts, in particular to a stainless steel stamping and welding impeller, comprising a front cover plate, a rear cover plate, blades, a wear ring, a real sealing ring and impeller hubs, which is characterized in that the front cover plate, the rear cover plate, the blades, the wear ring, the rear sealing ring and the impeller hubs are connected by argon-arc welding. Compared with prior art, the utility model, with innovative structure as well as safe and reliable usage, strengthens the combination between the blades and the cover plates. The blades have no positioning edges, rendering the utility model with material-saving property. The facility investment and cost are reduced to only 15% to 37% that of castings, and weight to only 80 to 40%. The utility model is applicable to welding and forming of stainless stamping impellers of various specifications and shapes.

Description

Stainless steel punching press welding impeller

[technical field]

The utility model relates to the pump part technical field, particularly a kind of stainless steel punching press welding impeller.

[background technique]

At present, the welding shaping method of China's most of stainless steel punching press impeller all is to adopt resistance welding, and the advantage of this kind welding method is that equipment investment is less, and is easy and simple to handle, is applicable to that diameter is less than the impeller welding fabrication below 200.But greater than more than 200 and the complicated impeller of blade shape distortion, this method welding just has significant limitation, even can't operate for diameter.The welding shaping method of another kind of stainless steel punching press impeller is a laser bonding, this is the exigent welding method of a kind of technology content, and for the location of impeller, the requirement of clock like precision is described all to have in the space of blade forming curve, and equipment investment is very big, and this technology is still immature in China at present.Because the limitation of welding method, present large diameter impeller all adopts casting, but the casting impeller Heavy Weight of stainless steel and copper material, cost height, with relatively with a kind of impeller of specification, the cost of stainless steel punching press impeller is 15% of a cast copper impeller, 37% of casting stainless steel impeller.

[summary of the invention]

The purpose of this utility model is exactly will solve above-mentioned deficiency and provide a kind of employing corrosion resistant plate stamping part to be welded into an integrally-built impeller by frock and structural feature.

For achieving the above object, the utility model proposes a kind of stainless steel punching press welding impeller, comprise front shroud, back shroud, blade, choma, increasing back sealing ring and impeller hub, it is characterized in that adopting between described front shroud, back shroud, blade, choma, increasing back sealing ring and the impeller hub argon arc to be welded to connect; Back shroud 6 is welded to connect blade 3 one sides, blade 3 opposite sides are provided with several and insert salient point 7, have on the front shroud 5 with blade and insert the patchhole 8 that the salient point number equates and matches mutually, insert salient point 7 and be positioned at patchhole 8, inserting salient point 7 is welded on the front shroud 5, front shroud, blade, back shroud combine, and form the runner of impeller; Described front shroud, back shroud, blade, choma and increasing back sealing ring adopt the corrosion resistant plate impact briquetting.

The utility model compared with prior art, novel structure, safe and reliable, strengthened blade and front and rear cover plate conjugation, because this blade does not have location edge, therefore can save material, equipment investment is few, greatly reduces cost, only is 15%～37% of foundry goods, weight saving 80～40% is applicable to the welding fabrication of the stainless steel punching press impeller of all size and shape.

[description of drawings]

Fig. 1 is blade positioning tool figure of the present utility model.

Fig. 2 is a blade erection drawing of the present utility model.

Fig. 3 is a structural representation of the present utility model.

Fig. 4 is the plan view of Fig. 3.

Fig. 5 is the structural representation of blade of the present utility model.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5,1 is that impeller hub, 2 is that choma, 3 is that blade, 4 is that increasing back sealing ring, 5 is that front shroud, 6 is that back shroud, 7 is that insertion salient point, 8 is that patchhole, 11 is that positioning plate, 12 is that positioning block, 13 is a positioning body.

[specific embodiment]

Referring to Fig. 1, blade 3 is put into positioning plate 11 by back, positioning block 12 location and back shroud 6 welding.

The back shroud 6 and the blade 3 that will be welded in one referring to Fig. 2 are installed in the positioning body 13, and blade 3 combines side several insertion salient points 7 are set with front shroud 5, have on front shroud 5 and the equal and patchhole 8 that match mutually of blade insertion salient point number.Like this, guaranteed that the group number of patchhole 8 and position are consistent with the number and the position of every impeller blade, simultaneously, the number of every group of patchhole and position are also with to insert the number and the position of salient point consistent on the every blade.Then with in the corresponding patchhole 8 on the insertion salient point 7 insertion front shrouds 5 of every blade, to insert salient point 7 molten solders again on front shroud 5,, weld each salient point then because the insertion salient point of each blade inserts inserting in the hole on the front shroud, like this, not only accurate positioning.And can strengthen the conjugation of front and rear cover plate and blade.Again impeller hub, increasing back sealing ring, choma progressively are welded into an overall structure at last.

Referring to Fig. 3 is the impeller of welding fabrication, and this impeller is made up of front shroud 5, back shroud 6, blade 3, choma 2, increasing back sealing ring 4 and impeller hub 1, and its welding process adopts the argon arc welding.

Claims

1. impeller is welded in a stainless steel punching press, comprise front shroud, back shroud, blade, choma, increasing back sealing ring and impeller hub, it is characterized in that adopting between described front shroud, back shroud, blade, choma, increasing back sealing ring and the impeller hub argon arc to be welded to connect.

2. stainless steel punching press welding impeller as claimed in claim 1, it is characterized in that back shroud (6) is welded to connect blade (3) one sides, blade (3) opposite side is provided with several and inserts salient point (7), have on the front shroud (5) with blade and insert the patchhole (8) that the salient point number equates and matches mutually, insert salient point (7) and be positioned at patchhole (8), insert salient point (7) and be welded on the front shroud (5), front shroud, blade, back shroud combine, and form the runner of impeller.

3. stainless steel punching press welding impeller as claimed in claim 1 is characterized in that described front shroud, back shroud, blade, choma and increasing back sealing ring adopt the corrosion resistant plate impact briquetting.