CN201610855U - Centrifugal ventilator - Google Patents

Centrifugal ventilator Download PDF

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Publication number
CN201610855U
CN201610855U CN2010201207552U CN201020120755U CN201610855U CN 201610855 U CN201610855 U CN 201610855U CN 2010201207552 U CN2010201207552 U CN 2010201207552U CN 201020120755 U CN201020120755 U CN 201020120755U CN 201610855 U CN201610855 U CN 201610855U
Authority
CN
China
Prior art keywords
blades
centrifugal
linear leaf
blade
short blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201207552U
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Chinese (zh)
Inventor
胡金城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHAN KANGHUA GRAIN MACHINE PLANT
Original Assignee
WUHAN KANGHUA GRAIN MACHINE PLANT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUHAN KANGHUA GRAIN MACHINE PLANT filed Critical WUHAN KANGHUA GRAIN MACHINE PLANT
Priority to CN2010201207552U priority Critical patent/CN201610855U/en
Application granted granted Critical
Publication of CN201610855U publication Critical patent/CN201610855U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a centrifugal ventilator, comprising a supporting bracket; an electrical machine is connected on the supporting bracket; the output shaft of the electrical machine is connected with a vane wheel installed in the centrifugal shell; the shell is provided with an air intake and an air outlet; the vane wheel comprises a front disc and a rear disc; the connecting blades are uniformly distributed between the front disc and the rear disc along the periphery; the blades comprise long blades and short blades which are uniformly arranged alternately; and the included angle beta of the air outlet of the blades is 90+/-1 DEG. The flow of the ventilator is increased under overall increasing pressure value since the long blades and the short blades are uniformly arranged alternately and the included angle beta of the air outlet of the blades is 90+/-1 DEG; the centrifugal ventilator has compact structure, low occupied area, convenient assembly and maintenance, high efficiency, low energy consumption and low cost, and has the characteristics of high flow, suitable pressure, wide adjustment range, stable work and stable operation, thereby being capable of adjusting the blowing rate; and the centrifugal ventilator is applied to the power transport of rice and cotton when processing.

Description

Centrifugal fan
Technical field
The utility model belongs to grain processing equipment, is specifically related to a kind of centrifugal fan.
Background technique
For a long time, the wind-force wind conveyer kind that China is used on the grain processing equipment is few, but wind-force wind conveyer or flow that present food supply food process equipment is selected for use are too big, or flow is too little, is difficult to adapt to the requirement of grain processing.The blower fan of extensive use adopts belt transmission on the grain processing equipment at present, its physical dimension is big, and the layout at blade shape and air-out angle causes this fan delivery less than normal, adds to be prone to putty man-hour, even fall problems such as material, make grain processing technology be difficult to the effect that reaches satisfied.If the raising air quantity, just necessary expanded motor power, thus cause the energy consumption in the course of working higher, increase processing cost.And the corresponding a kind of air quantity of a kind of blower fan of model, can't directly change the air quantity size, caused the Applicable scope of blower fan little.
Summary of the invention
The purpose of this utility model be to provide a kind of can be under the situation that comprehensively promotes the total head value augmented flow, and can regulate air quantity, installation and maintenance are convenient, the centrifugal fan of high efficiency, low cost is to address the above problem.
The technical solution of the utility model is: a kind of centrifugal fan, it comprises supporting frame, connect motor on the supporting frame, the output shaft of motor connects impeller, and impeller is located in the centrifugal casing, casing is provided with intake grill and exhaust outlet, impeller comprises shroud and hub disk, and evenly distributing along circumference between shroud and the hub disk is connected blade, and described blade comprises linear leaf and short blade, linear leaf and short blade are alternately evenly arranged, and the exhaust outlet angle β of linear leaf and short blade is 90 ° ± 1 °.
The length of described short blade is 1/3 of linear leaf length.
The sheet number of described linear leaf and short blade all is 8 or 10 or 12 or 16.
Described exhaust outlet place is provided with the damper of quantity-adjustable, so that regulate the air quantity of blower fan, thereby is suitable for various working.
Because this blower fan adopts motor direct connection examination structure, what is more important, the blade of blower fan adopts linear leaf and the short blade of alternately evenly arranging, and the exhaust outlet angle β of blade is 90 ° ± 1 °, make this blower fan can be under the situation that comprehensively promotes the total head value augmented flow, it has compact structure, floor space is little, installation, maintenance is convenient, efficient is high, and energy consumption is low, and cost is low.Flow is big, moderate pressure, and the property regulation scope is wide, and stable working is reliable, can regulate characteristics such as air quantity size, is applicable to that grain, cotton add the power in man-hour and carry.
Description of drawings
Fig. 1 structural representation of the present utility model.
Fig. 2 profile schematic representation of the present utility model.
Fig. 3 vane collocation schematic representation.
Fig. 4 blade wheel structure schematic representation.
Fig. 5 linear leaf plan view.
Fig. 6 short blade plan view.
Fig. 7 linear leaf plan view.
Fig. 8 short blade plan view.
Embodiment
As shown in Figure 1, the output shaft of motor 3 connects impeller 6, and impeller 6 is located in the centrifugal casing 4.Casing 4 is provided with intake grill and exhaust outlet, intake grill by air intake with frustum and arc outlet air end air intake pipe 7 constitute, form air inlet chamber.Described exhaust outlet place is provided with the damper of quantity-adjustable, so that regulate the air quantity of blower fan, thereby is suitable for various working.
As shown in Figure 2, centrifugal fan comprises supporting frame 1, and supporting frame 1 has damping disc 2, and motor 3 is fastened on the supporting frame 1.Casing 4 is provided with deashing door 5.
Shown in Fig. 3,4, impeller 6 comprises shroud 8 and hub disk 9, evenly is alternately distributed along circumference between shroud 8 and the hub disk 9 to be connected linear leaf 10 and short blade 11.The sheet number of described linear leaf 10 and short blade 11 can all be 8 or 10 or 12 or 16.The exhaust outlet angle β of linear leaf 10 and short blade 11 is 90 ° ± 1 °.The shape of centrifugal casing 4, be that aerodynamics sketch map dimension ratio is: F1=4.5: F2=5.5: F3=6.5: F4=7.5: R=54.5, the intake grill maximum diameter φ 1 of aerodynamics sketch map dimension ratio air inlet chamber: the minimum major diameter φ 3 of intake grill: the exhaust outlet diameter phi 4 of air inlet chamber: the width B 6 of casing 4 outlets: the outlet length B7 of casing 4: the width B 3=57 of impeller 6: 46: 49: 25: 50: 18.
Shown in Fig. 5,6,7,8, the length of short blade 11 is 1/3 of linear leaf 10 length, and H3: H4: H2=(H0/3): (H2+H3tg7.6 °): 9.5, and wherein limit H2, limit H4 are vertical with limit H3; H0: H1: H2=33: 14: 9.5, wherein limit H2, limit H1 were vertical with limit H0.
Above ventilator constitutes DL7-40 series centrifugal fan.

Claims (4)

1. centrifugal fan, it comprises supporting frame, connect motor on the supporting frame, the output shaft of motor connects impeller, and impeller is located in the centrifugal casing, casing is provided with intake grill and exhaust outlet, impeller comprises shroud and hub disk, and evenly distributing along circumference between shroud and the hub disk is connected blade, it is characterized in that described blade comprises linear leaf and short blade, linear leaf and short blade are alternately evenly arranged, and the exhaust outlet angle β of linear leaf and short blade is 90 ° ± 1 °.
2. centrifugal fan as claimed in claim 1, its feature is 1/3 of a linear leaf length in the length of described short blade.
3. centrifugal fan as claimed in claim 1 or 2, the sheet number that it is characterized in that described linear leaf and short blade all is 8 or 10 or 12 or 16.
4. centrifugal fan as claimed in claim 1 is characterized in that described exhaust outlet place is provided with the damper of quantity-adjustable.
CN2010201207552U 2010-02-23 2010-02-23 Centrifugal ventilator Expired - Fee Related CN201610855U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201207552U CN201610855U (en) 2010-02-23 2010-02-23 Centrifugal ventilator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201207552U CN201610855U (en) 2010-02-23 2010-02-23 Centrifugal ventilator

Publications (1)

Publication Number Publication Date
CN201610855U true CN201610855U (en) 2010-10-20

Family

ID=42961488

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201207552U Expired - Fee Related CN201610855U (en) 2010-02-23 2010-02-23 Centrifugal ventilator

Country Status (1)

Country Link
CN (1) CN201610855U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787577A (en) * 2011-12-23 2012-11-21 郑念新 Lawn garbage sweeping machine
CN113803273A (en) * 2021-10-20 2021-12-17 江阴市新启点环境科技有限公司 Alloy aluminum impeller with staggered blade distribution structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787577A (en) * 2011-12-23 2012-11-21 郑念新 Lawn garbage sweeping machine
CN113803273A (en) * 2021-10-20 2021-12-17 江阴市新启点环境科技有限公司 Alloy aluminum impeller with staggered blade distribution structure

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101020

Termination date: 20140223