CN201448255U

CN201448255U - Backward high-pressure anti-explosion centrifugal ventilator

Info

Publication number: CN201448255U
Application number: CN2009200428752U
Authority: CN
Inventors: 孙建中; 张余洁; 李智勇; 梅良荣; 张惠舫; 贾贵彬
Original assignee: JIANYIN CITY AIR CONDITIONER AND DUST TEMOVE APPLIANCE FACTORY; HONGDA FAN CO Ltd JIANGYIN CITY
Current assignee: JIANYIN CITY AIR CONDITIONER AND DUST TEMOVE APPLIANCE FACTORY; HONGDA FAN CO Ltd JIANGYIN CITY
Priority date: 2009-06-08
Filing date: 2009-06-08
Publication date: 2010-05-05
Anticipated expiration: 2019-06-08

Abstract

The utility model relates to a backward high-pressure anti-explosion centrifugal ventilator used for a spinning machine to collect cotton yarn broken ends in a textile enterprise. The centrifugal ventilator comprises an impeller (2) including blades (8), the blade type of the blades (8) is a backward flat-plate type, an outlet angle theta of each blade (8) is 61-67 degrees, the ratio of the inlet width (b1) of the impeller to the diameter (D) of the impeller ranges from 0.12 to 0.18, the ratio of the outlet width (b2) of the impeller to the diameter (D) of the impeller ranges from 0.06 to 0.10, the ratio (D1/D) of the inlet diameter of the impeller to the diameter of the impeller ranges from 0.48 to 0.55, and the number of the blades of the impeller ranges from 8 to 12. The backward high-pressure anti-explosion centrifugal ventilator has the advantages of high efficiency, low energy consumption, low cost, simple structure, convenient installation, stable running, fine performance, simple manufacturing and the like on the premise of meeting demands of blower sizes and aerodynamic performance needed for textile machineries such as spinning machines and the like to suck negative pressure and remove dusts, thereby having fine effects for the textile machineries such as the spinning machines and the like to suck negative pressure and remove dusts.

Description

The back is to the high-voltage explosion-proof centrifugal blower

(1) technical field

The utility model is that a kind of textile enterprise's spinning frame that is applicable to is collected the back to centrifugal high pressure fan of cotton yarn broken end, also can be used for the ventilation occasion of other no etchant gas, belongs to textile manufacturing machine special device technical field.

(2) background technique

Be used for the ventilator that textile mills' spinning frame broken end is collected at present, be mainly the centrifugal blower of no spiral case.The type blower fan core component is an impeller, often adopts wheel disc and blade separate type, and impeller outer diameter is generally about 420mm, and motor is installed in draught fan impeller air intake oral-lateral, and no spiral case can satisfy existing spinning frame flute mouth and inhale cotton negative pressure requirement.But at present the blower fan of the type exists shortcomings such as mechanism's heaviness, efficient are low, energy consumption height.

(3) summary of the invention

The purpose of this utility model is in order to overcome the deficiency of above-mentioned existing blower fan, inhale cotton the requirement under the prerequisite of negative pressure satisfying textile enterprise spinning frame flute mouth place, provide a kind of have high efficiency, low energy consumption, low cost, simple in structure, easy for installation, operate steadily, the spinning frame of function admirable inhales cotton special-purpose back to the high-voltage explosion-proof centrifugal blower.

The purpose of this utility model is achieved in that a kind of back to the high-voltage explosion-proof centrifugal blower, comprises impeller, and described impeller comprises blade, and the blade profile of described blade is that backward type is plate.

Behind the utility model to the high-voltage explosion-proof centrifugal blower, described blade outlet angle θ=61～67 °; The ratio of impeller inlet width and impeller diameter is 0.12～0.18; The ratio of impeller outlet width and impeller diameter is 0.06～0.10; The impeller inlet diameter is 0.48～0.55 with the diameter ratio of impeller; The impeller blade number is 8～12.

The beneficial effects of the utility model are:

Back of the present utility model to the high-voltage explosion-proof centrifugal blower with the impeller outlet angle of large inclined angle and backward type straight blade form back be main feature to high-voltage explosion-proof type impeller, can make back of the present utility model aspirate negative pressure and get rid of the needed blower sizes of trifle in the world at textile manufacturing machines such as satisfying spinning frame to the high-voltage explosion-proof centrifugal blower, under the prerequisite of aeroperformance, has high efficiency, low energy consumption, low-cost, simple in structure, easy for installation, operate steadily, advantages such as the function admirable manufacturing is simple have good result for textile manufacturing machines such as spinning frame suction negative pressure and eliminating trifle in the world.

(4) description of drawings

Fig. 1 is to the Facad structure schematic representation of high-voltage explosion-proof centrifugal blower behind the utility model.

Fig. 2 is to the blade wheel structure schematic representation of high-voltage explosion-proof centrifugal blower behind the utility model.

Fig. 3 is the left side view of Fig. 2.

Among the figure: intake grill 1, impeller 2, spiral case 3, motor 4, reel 5, straight hub disk 6, oblique shroud 7, blade 8.

(5) embodiment

Referring to Fig. 1, the utility model relates to the back to the high-voltage explosion-proof centrifugal blower, mainly is made up of spiral case 3, intake grill 1, impeller 2 and motor 4.

Referring to Fig. 2～3, described impeller 2 is by reel 5, wheel disc 6, tiltedly shroud 7 and the blade 8 that is evenly distributed between oblique shroud 7 and the straight hub disk 6 are formed. and the blade profile of described blade 8 is that backward type is plate; Blade 8 exit angle θ=61～67 °; Impeller inlet width b ₁With the ratio of impeller diameter D be 0.12～0.18; Impeller outlet width b ₂With the ratio of impeller diameter D be 0.06～0.10; The impeller inlet diameter compares D with the diameter of impeller ₁/ D is 0.48～0.55; The impeller blade number is 8～12, and best lobe numbers is 10.Reel 5, straight hub disk 6, oblique shroud 7 and blade 8 adopt the cast aluminium alloy integral casts to make, and handle through hardening oxidation, and smooth surface, not wounded has explosion prevention function, and suitable spinning frame is inhaled cotton process safety requirement.

Behind the utility model be: described blade 8 exit angle θ=64 ° to the preferred embodiment of high-voltage explosion-proof centrifugal blower; Impeller inlet width b ₁With the ratio of impeller diameter D be 0.156; Impeller outlet width b ₂With the ratio of impeller diameter D be 0.0857; The impeller inlet diameter compares D with the diameter of impeller ₁/ D is 0.514; The impeller blade number is 10.

Working principle:

The back of centrifugal blower rotates under the drive of motor 4 to high pressure type impeller 2, and air-flow is axially sucked through intake grill 1, and the effect of intake grill 1 is to guarantee that air-flow can be full of fan inlet area uniformly, reduces flow losses.Air-flow is turned back into the runner of radial flow through the blade formation of impeller 2 then, because the effect of blade makes air-flow obtain energy, gas pressure improves and kinetic energy increases.3 of spiral cases are concentrated the gases that impeller 2 throws away, discharge behind the water conservancy diversion, diffusion, make blower fan produce inlet/outlet pressure reduction, thereby realize the conveying of gas.

Backward high-pressure anti-explosion centrifugal ventilator of the present utility model is at flow 830～2100m³/ h, total head 1930～1240Pa, high efficiency running in the working region of static pressure 1860～790Pa, so that the backward high-pressure anti-explosion centrifugal ventilator high efficiency of utility model, low energy consumption, low cost, simple in structure, easy for installation, operate steadily, the advantage such as the function admirable manufacturing is simple, satisfy the textile machine suction negative pressure such as spinning frame fully and get rid of the required negative pressure requirement of trifle in the world.

Claims

After one kind to the high-voltage explosion-proof centrifugal blower, comprise impeller (2), described impeller (2) comprises blade (8), it is characterized in that: the blade profile of described blade (8) is that backward type is plate.
2. a kind of back according to claim 1 is characterized in that: described blade (8) exit angle θ=61～67 ° to the high-voltage explosion-proof centrifugal blower; Impeller inlet width (b ₁) with the ratio of impeller diameter (D) be 0.12～0.18; Impeller outlet width (b ₂) with the ratio of impeller diameter (D) be 0.06～0.10; The diameter of impeller inlet diameter and impeller is than (D ₁/ D) be 0.48～0.55; The impeller blade number is 8～12.
3. a kind of back according to claim 2 is characterized in that: described blade (8) exit angle θ=64 ° to the high-voltage explosion-proof centrifugal blower; Impeller inlet width (b ₁) with the ratio of impeller diameter (D) be 0.156; Impeller outlet width (b ₂) with the ratio of impeller diameter (D) be 0.0857; The diameter of impeller inlet diameter and impeller is than (D ₁/ D) be 0.514; The impeller blade number is 10.
According to claim 1,2 or 3 described a kind of backs to the high-voltage explosion-proof centrifugal blower, it is characterized in that: described blade (8) adopts the cast aluminium alloy integral cast to make.