CN201236836Y

CN201236836Y - Anti-corrosion lining plastic impeller

Info

Publication number: CN201236836Y
Application number: CNU2008200387334U
Authority: CN
Inventors: 王晓华; 凤建国; 洪忠保; 凤良云; 吴淑芳; 曹卫斌; 杨芝倩
Original assignee: ANHUI WOLONG VALVE Co Ltd
Current assignee: ANHUI WOLONG VALVE Co Ltd
Priority date: 2008-08-08
Filing date: 2008-08-08
Publication date: 2009-05-13
Anticipated expiration: 2018-08-08

Abstract

An anticorrosive plastic lined impeller is characterized in that an overflow part of the impeller, which is in contact with a conveying medium, adopts anticorrosive fluoroplastic or fluoroplastic alloy as the material; a skeleton inside the impeller is a metal insert entirely coated by fluoroplastic; and the overflow part of the impeller and the skeleton inside the impeller are integral moulding members. The utility model effectively overcomes the limitation that metallic materials lacks of corrosion resistance, solves the problem of poor intensity of the all-plastic impeller, prolongs the service life of the whole impeller, and greatly facilitating long-term and high efficiency operation of a centrifugal pump, production efficiency improvement and energy conservation.

Description

The anti-corrosion plastic coating impeller

Technical field

The utility model relates to centrifugal pump impeller.

Background technique

Centrifugal pump carries liquid ability big because of it, and flow is uniform and stable, and is easy to use, and cost is low, has extremely widely to use.Centrifugal pump is made used material category and is comprised cast iron, stainless steel, pottery, various plastics or the like.For acid, alkali, the salt medium of carrying severe corrosive, mainly be to adopt fluoroplastic, or Fluoroine-containing plastic alloy.

The centrifugal pump that the fluoroplastic centrifugal pump is compared metal material has been widened the application of centrifugal pump, but the intensity of plastic material compares with metal and want weak a lot, the heart component of pump component---impeller particularly, and the intensity of this part directly influences the working life of pump product.

At present, impeller in the anti-corrosive pump industry, the fluoroplastic impeller generally is to adopt overall plastic or localized metallic lining impeller, main being suitable for and flow less (per hour generally being not more than 200 cubic metres), the occasion of lift lower (not being higher than 50 meters) if exceed this using scope, tends to occur following phenomenon, cause pump to damage, can't normally use.

1, the plastic impeller blade is torn, and lining is moulded front shroud of impeller and torn.

2, the impeller shaft metal insert twists off, separates with plastics;

3, the impeller front and rear cover plate is because multiple reason distortion such as medium temperature causes blade exit to stop up.

Thus, the fluoroplastic centrifugal pump impeller is at big flow, and is fragile when high-lift corrosion-resistant occasion is used, even can't use, and do not find effective workaround always.

The model utility content

The utility model is for avoiding above-mentioned existing in prior technology deficiency, a kind of new structure, long-lived anti-corrosion plastic coating impeller being provided, to improve the impeller whole service life.

The utility model technical solution problem adopts following technological scheme:

The structural feature of the utility model anti-corrosion plastic coating impeller is an impeller at overcurrent of its contact fed sheet of a media partly is to be material with corrosion-resistant fluoroplastic or Fluoroine-containing plastic alloy, the impeller inner frame is a metal insert, impeller inner frame integral body coats fluoroplastic outward, and described impeller overcurrent part and impeller inner frame are the global formation member.

The structural feature of the utility model anti-corrosion plastic coating impeller is that also the impeller inner frame of described metal insert is provided with reinforced hole.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model partly adopts corrosion-resistant fluoroplastic at the impeller overcurrent, and the impeller inner frame that is used to support impeller intensity is that metal insert integral body coats fluoroplastic outward, the two whole manufacturing, effectively overcome the narrow limitation of metallic material corrosion resistance, and the deficiency of plastic impeller intensity, broken through the big flow of plastic lining centrifugal pump, high-lift manufacturing bottleneck, its feed flow per hour can reach 600 cubic metres, and lift can reach 100 meters; And impeller does not have the quality problems of intensity, has expanded the application of plastic lining corrosion resisting centrifugal pump greatly.

2, the utility model impeller whole service life improves, and greatly helps keeping the long-term high-efficiency operation of centrifugal pump, enhances productivity, energy saving.

3, the reduction of the utility model impeller damage frequency has prolonged service cycle, has reduced user's maintenance expenses, reduces the pump operation consuming cost, has reduced the production loss that causes because of shutdown, and utilization benefit is remarkable.

4, the utility model manufacturing process is simple, is convenient to make.

Description of drawings

Fig. 1 is the utility model overall structure schematic representation.

Fig. 2 is the utility model floor map.

Fig. 3 is the utility model impeller inner frame structural representation.

Fig. 4 is the utility model impeller inner frame plan view.

Below by embodiment, the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment

Number in the figure: 1 overcurrent part, 2 impeller inner frames, 3 reinforced holes.

Referring to Fig. 1, Fig. 2, impeller is to be material with corrosion-resistant fluoroplastic or Fluoroine-containing plastic alloy in overcurrent part 1 of its contact fed sheet of a media in the present embodiment, impeller inner frame 2 is a metal insert, the impeller inner frame 2 whole outer fluoroplastic that coat, and impeller overcurrent part 1 and impeller inner frame 2 are integrated member.

Referring to Fig. 4 and Fig. 5, in the present embodiment, the metal insert of impeller inner frame 2 is provided with reinforced hole 3, and reinforced hole 3 can improve between external cladding material and the metal insert and combines firm reliability, guarantee pump transmitting torque in operation process, and can the two disengaging, the plastics cracking.

In concrete the enforcement, the combination manufacture of impeller overcurrent part and interior metal inserts can be mould compression moulding, also can be molding and forming, perhaps adopts other molding mode.

Selecting for use of impeller material can determine that overcurrent part 1 can adopt the plastic materials as fluoroplastic, Fluoroine-containing plastic alloy or other withstand corrosion according to usage requirement; Metal insert can be a WCB cast steel, also can be stainless steel and other metal materials.

Claims

1, anti-corrosion plastic coating impeller, it is characterized in that impeller is to be material with corrosion-resistant fluoroplastic or Fluoroine-containing plastic alloy in the overcurrent part (1) of its contact fed sheet of a media, impeller inner frame (2) is a metal insert, the whole outer fluoroplastic that coat of described impeller inner frame (2), described impeller overcurrent part (1) and impeller inner frame (2) are the global formation member.

2, anti-corrosion plastic coating impeller according to claim 1 is characterized in that the impeller inner frame (2) of described metal insert is provided with reinforced hole (3).