CN2641340Y

CN2641340Y - Combination type air fan for ventilation made of glass fibre reinforced plastic

Info

Publication number: CN2641340Y
Application number: CN 03238054
Authority: CN
Inventors: ***; 高树学
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-03
Filing date: 2003-09-03
Publication date: 2004-09-15
Anticipated expiration: 2013-09-03

Abstract

The utility model discloses a combined glass steel draught fan, which consists of a shell, an impeller, an inlet opening, a wheel boss and a power shaft. The wheel boss 4 which is fixed on the power shaft 5 is riveted with the impeller 3; a big clearance is arranged between the left end surface of the draught fan impeller and the right end surface of the inlet opening, the shell 1 consists of a thick side board 1.3, an arc board 1.2 and a bolt 1.1 which fixedly connects the thick side board 1.3 and the arc board 1.2; the impeller 3 consists of an impeller 3.1 and thick left and the right side boards 3.3, 3.2 which are fixedly connected. The power shaft drives the draught fan to ventilate the impeller by the wheel boss. Because of the adoption of the combined type, the utility model conveniently thickens the shell side board and the impeller side board, increases the draught fan intensity, removes materials from the impeller for achieving the dynamic balance, meanwhile expands the clearance between the inlet opening and the impeller end surface, prevents the mutual scraping phenomenon after being stuck with dirts. So the draught fan does not add the cost, and has the advantages of corrosion resistance and long service life.

Description

The combined fiberglass ventilator

One, technical field

The utility model relates to a kind of chemical industry ventilator.

Two, background technique

Current, the ventilator of the logical certain density acid of the row of being used for, alkali, salt corrosion gas in the Chemical Manufacture, its casing, impeller are integral type, whole consistency of thickness, make the stressed general goal strength deficiency of blower fan, can only subsidize during impeller levelling weighing apparatus, the somewhere strength deficiency of blower fan reduced with the life-span that makes blower fan that comes off of subsidizing during operation.In addition, the opposing end surface gap of air inlet and impeller is too little, and its side hangs certain thick dirt makes two to scrape mutually and increase resistance and cause blower fan to damage.

Three, summary of the invention

Technical problem to be solved in the utility model provides a kind of combined fiberglass ventilator, by changing structure, has improved fan life.

The technological scheme that solves its technical problem employing is: this blower fan is made up of glass fibre reinforced plastics casing, impeller, intake grill and wheel hub and line shaft, and the wheel hub that is fixed on the line shaft is riveted with impeller; There is 5-10 millimeter gap the impeller left side that is positioned at casing with the intake grill right side that is set on the casing; Casing is become by thick side plate, cambered plate and the bolt combination that the two is connected together; Impeller is combined into by the blade and the thick left side plate that are connected together.Line shaft rotates by the wheel hub impeller and ventilates.

The beneficial effects of the utility model are: just both can improve the intensity of blower fan after the left side plate thickening combination with the side plate of casing and impeller, and be implemented in and remove material on the impeller plate and reach the impeller dynamic balancing, the material that has overcome the method for subsidizing comes off; Owing to gap between the left side of intake grill right side and impeller is strengthened, the extension dirt of having avoided in service is scraped phenomenon mutually again.So, do not increasing under the condition of cost, make and improve several times in working life of blower fan.

Four, description of drawings

Fig. 1 is main TV structure figure of the present utility model.

Fig. 2 is the utility model Figure 1A-A sectional structure chart.

Five, embodiment

In the accompanying drawings, the utility model combined fiberglass ventilator is made up of casing, impeller, intake grill and wheel hub and line shaft; Casing, impeller and intake grill adopt glass fibre reinforced plastic material, and this kind material has good anti-corrosive properties.Wheel hub 4 is connected on the line shaft 5 by driven by motor by screw, and the outer rim of wheel hub 4 is riveted together by rivet and impeller 3.Casing 1 is made up of thick side plate 1.3, cambered plate 1.2 and connecting bolt 1.1, and a plurality of bolts 1.1 are connected side plate 1.3 and cambered plate 1.2 together, and seam crossing is spread binder.Casing 1 adopts combined type can thicken side plate 1.3, so that do not increasing the intensity that increases blower fan under the cost.Impeller 3 is made up of thick left side plate 3.3,3.2 and blade 3.1, and the three is an one by adhesive bonds.Combination type blade wheel 3 can thicken left side plate 3.3,3.2, can remove material in the relevant position on side plate when draught fan impeller 3 is done dynamic balancing, has overcome and has subsidized the material deficiency that material comes off blower fan is scrapped when wheel rotation.Impeller 3 left sides in casing 1 and be set between the two sides, intake grill 2 right side on the casing 1 and leave the 5-10 mm clearance, more many greatly with the gap than the gap of conventional fan, avoid blower fan to be in operation hanging dirt scraping phenomenon mutually, prolonged the working life of blower fan.

Claims

1, a kind of combined fiberglass ventilator is made up of glass fibre reinforced plastics casing, impeller, intake grill and wheel hub and line shaft, and the wheel hub (4) that is fixed on the line shaft (5) is riveted together with impeller (3); There is 5-10 millimeter gap impeller (3) left side that it is characterized in that being positioned at casing (1) with intake grill (2) right side that is set on the casing (1); Casing (1) is combined into by thick side plate (1.3), cambered plate (1.2) with the two connecting bolt (1.1) that is connected together; Impeller (3) is combined into by the blade (3.1) and the thick left side plate (3.3,3.2) that are connected together.