CN202937480U - Multistage impeller centrifugal blower - Google Patents

Multistage impeller centrifugal blower Download PDF

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Publication number
CN202937480U
CN202937480U CN 201220673031 CN201220673031U CN202937480U CN 202937480 U CN202937480 U CN 202937480U CN 201220673031 CN201220673031 CN 201220673031 CN 201220673031 U CN201220673031 U CN 201220673031U CN 202937480 U CN202937480 U CN 202937480U
Authority
CN
China
Prior art keywords
impeller
rotating shaft
casing
centrifugal blower
blower fan
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
CN 201220673031
Other languages
Chinese (zh)
Inventor
罗金林
杨铁
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.)
CHANGSHA XIANGQIAO FAN MANUFACTURE Co Ltd
Original Assignee
CHANGSHA XIANGQIAO FAN MANUFACTURE Co Ltd
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 CHANGSHA XIANGQIAO FAN MANUFACTURE Co Ltd filed Critical CHANGSHA XIANGQIAO FAN MANUFACTURE Co Ltd
Priority to CN 201220673031 priority Critical patent/CN202937480U/en
Application granted granted Critical
Publication of CN202937480U publication Critical patent/CN202937480U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a multistage impeller centrifugal blower comprising a base, a motor, a coupler, a rotary shaft, a bearing base and a fan, wherein the rotary shaft is composed of a first section, a second section and a third section, the first section is located in a bearing shaft, the second section and the third section are exposed at two ends of the bearing base, the length of the first section is larger than that of the second section and that of the third section, the fan comprises a fan shell and a secondary impeller set in the fan shell, the impeller set is arranged on the third section of the rotary shaft through a hub, outer diameters of impellers located in the same impeller set are the same, each impeller is provided with a balance disk, an air inlet is disposed on the outer side face of the fan shell close to the axis of the rotary shaft, the upper surface of the fan shell is provided with a backward air outlet, and the third section of the rotary shaft and the fan shell are in a combined sealing structure that labyrinth seal is combined with carbon ring seal. The multistage impeller centrifugal blower is stable to operate and high in energy utilization rate.

Description

The multi-stage impeller centrifugal blower
Technical field
The utility model relates to a kind of centrifugal blower, is specifically related to a kind of multi-stage impeller centrifugal blower.
Background technique
Centrifugal blower is a kind of blade type pneumatic compressor, with constant volume blower, compares, and has air pertormance and stablizes, vibrates little, the characteristics such as noise is low.The forms such as centrifugal blower is divided into that low speed is multistage, high-speed, multi-stage and high speed single-stage.Structurally, multistage high speed and Multi-stage low speed centrifugal blower need improve blast by the mode of speed increasing mechanism transmission.At present, the blower moved in some sewage treatment workss is the multistage high-speed blower, is mainly biological treatment aeration aerating is provided.The blower fan structure of this form is not too reasonable, causes the frequent maintenance that is in operation, and has a strong impact on the normal operation of sewage treatment works.Existing blower is unstable in running is mainly reflected in that impeller is unstable and rotating shaft is unstable.
The model utility content
The problem existed for prior art, the purpose of this utility model is to provide a kind of multi-stage impeller centrifugal blower, and described multi-stage impeller centrifugal blower is stable and capacity usage ratio is high.
A kind of multi-stage impeller centrifugal blower that the utility model provides, it comprises base, motor, coupling, rotating shaft, bearing support and blower fan, described motor, described coupling, described rotating shaft, described bearing support and described blower fan are installed on the upper surface of described base successively, described rotating shaft is installed on described base via described bearing support, described rotating shaft by the first paragraph that is arranged in described bearing shaft and be revealed in the second segment at described bearing support two ends and the 3rd section form, and the length of described first paragraph is greater than the length of described second segment and described the 3rd section, the second segment of described rotating shaft connects with the main shaft of described motor via described coupling, the 3rd section part of described rotating shaft is arranged in described blower fan, described blower fan comprises casing and is positioned at the sencond stage impeller group of described casing, described impeller sets is installed on via wheel hub on the 3rd section of described rotating shaft, the external diameter that is arranged in the described impeller of same one-level impeller sets equates, described impeller is provided with Balance disc, the outer side surface of described casing is provided with an intake grill near the axis place of described rotating shaft, the upper surface of described casing is provided with the exhaust outlet of backward type, adopt the combined seal structure of labyrinth seal and carbon ring seal combination between the 3rd section of described rotating shaft and described casing.
Based on disclosing of above technological scheme, the utility model possesses following beneficial effect:
The multi-stage impeller centrifugal blower provided in the utility model, adopt the series connection of sencond stage impeller group to improve air quantity and blast, the external diameter that is arranged in the described impeller of same one-level impeller sets equates, described impeller is provided with Balance disc, stability when guaranteeing the operation of described impeller, described rotating shaft by the first paragraph that is arranged in described bearing shaft and be revealed in the second segment at described bearing support two ends and the 3rd section form, and the length of described first paragraph is greater than the length of described second segment and described the 3rd section, stability when guaranteeing that described rotating shaft is rotated, adopt the combined seal structure of labyrinth seal and carbon ring seal combination between the 3rd section of described rotating shaft and described casing, good seal performance and strengthen the airflow stability of described blower fan and improve the energy utilization efficiency of described blower fan, in summary, multi-stage impeller centrifugal blower good operation stability and capacity usage ratio that the utility model provides are high.
The accompanying drawing explanation
Fig. 1 is the front schematic view of the multi-stage impeller centrifugal blower that provides of the utility model;
Fig. 2 is the side schematic view of the multi-stage impeller centrifugal blower that provides of the utility model.
The drawing reference numeral explanation
Multi-stage impeller centrifugal blower 100
Base 1
Motor 2
Coupling 3
Rotating shaft 4
Bearing support 5
Blower fan 6
Casing 61 intake grill 611 exhaust outlets 612
Impeller 62
Combined seal structure 7
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment:
The problem existed for prior art, the purpose of this utility model is to provide a kind of multi-stage impeller centrifugal blower 100, and described multi-stage impeller centrifugal blower 100 is stable and capacity usage ratio is high.
Refer to Fig. 1 and Fig. 2, a kind of multi-stage impeller centrifugal blower 100 that the utility model provides, it comprises base 1, motor 2, coupling 3, rotating shaft 4, bearing support 5 and blower fan 6, described motor 2, described coupling 3, described rotating shaft 4, described bearing support 5 and described blower fan 6 are installed on the upper surface of described base 1 successively, described rotating shaft 4 is installed on described base 1 via described bearing support 5, described rotating shaft 4 is comprised of the first paragraph that is arranged in described bearing shaft (not label) and the second segment (not label) and the 3rd section (the not label) that are revealed in described bearing support 5 two ends, and the length of described first paragraph is greater than the length of described second segment and described the 3rd section, the second segment of described rotating shaft 4 connects with the main shaft of described motor 2 via described coupling 3, the 3rd section part of described rotating shaft 4 is arranged in described blower fan 6, described blower fan 6 comprises casing 61 and is positioned at the sencond stage impeller group of described casing 61 (not label), described impeller sets is installed on via wheel hub (not label) on the 3rd section of described rotating shaft 4, the external diameter that is arranged in the described impeller 62 of same one-level impeller sets equates, described impeller 62 is provided with Balance disc, the outer side surface of described casing 61 is provided with an intake grill 611 near the axis place of described rotating shaft 4, the upper surface of described casing 61 is provided with the exhaust outlet 612 of backward type, adopt the combined seal structure 7 of labyrinth seal (not label) and carbon ring seal (not label) combination between the 3rd section of described rotating shaft 4 and described casing 61.
Based on disclosing of above technological scheme, the utility model possesses following beneficial effect:
The multi-stage impeller centrifugal blower 100 provided in the utility model, adopt the series connection of sencond stage impeller group to improve air quantity and blast, the external diameter that is arranged in the described impeller 62 of same one-level impeller sets equates, described impeller 62 is provided with Balance disc, stability when guaranteeing 62 operation of described impeller, described rotating shaft 4 by the first paragraph that is arranged in described bearing shaft and be revealed in the second segment at described bearing support 5 two ends and the 3rd section form, and the length of described first paragraph is greater than the length of described second segment and described the 3rd section, stability when guaranteeing that described rotating shaft 4 is rotated, adopt the combined seal structure 7 of labyrinth seal and carbon ring seal combination between the 3rd section of described rotating shaft 4 and described casing 61, good seal performance and strengthen the airflow stability of described blower fan 6 and improve the utilization ratio of the energy of described blower fan 6, in summary, multi-stage impeller centrifugal blower 100 good operation stability and energy utilization efficiency that the utility model provides are high.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obvious realization of the present utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technological scheme to carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all in protection domain of the present utility model.

Claims (1)

1. a multi-stage impeller centrifugal blower, it is characterized in that, comprise base, motor, coupling, rotating shaft, bearing support and blower fan, described motor, described coupling, described rotating shaft, described bearing support and described blower fan are installed on the upper surface of described base successively, described rotating shaft is installed on described base via described bearing support, described rotating shaft by the first paragraph that is arranged in described bearing shaft and be revealed in the second segment at described bearing support two ends and the 3rd section form, and the length of described first paragraph is greater than the length of described second segment and described the 3rd section, the second segment of described rotating shaft connects with the main shaft of described motor via described coupling, the 3rd section part of described rotating shaft is arranged in described blower fan, described blower fan comprises casing and is positioned at the sencond stage impeller group of described casing, described impeller sets is installed on via wheel hub on the 3rd section of described rotating shaft, the external diameter that is arranged in the described impeller of same one-level impeller sets equates, described impeller is provided with Balance disc, the outer side surface of described casing is provided with an intake grill near the axis place of described rotating shaft, the upper surface of described casing is provided with the exhaust outlet of backward type, adopt the combined seal structure of labyrinth seal and carbon ring seal combination between the 3rd section of described rotating shaft and described casing.
CN 201220673031 2012-12-07 2012-12-07 Multistage impeller centrifugal blower Expired - Fee Related CN202937480U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220673031 CN202937480U (en) 2012-12-07 2012-12-07 Multistage impeller centrifugal blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220673031 CN202937480U (en) 2012-12-07 2012-12-07 Multistage impeller centrifugal blower

Publications (1)

Publication Number Publication Date
CN202937480U true CN202937480U (en) 2013-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220673031 Expired - Fee Related CN202937480U (en) 2012-12-07 2012-12-07 Multistage impeller centrifugal blower

Country Status (1)

Country Link
CN (1) CN202937480U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835970A (en) * 2014-02-27 2014-06-04 上海章金工业热风机制造有限公司 Air blower
CN104533813A (en) * 2014-12-31 2015-04-22 山东圣琪生物有限公司 Multi-stage centrifugal blower
CN104791291A (en) * 2015-04-21 2015-07-22 浙江聚英风机工业有限公司 Carbon ring sealed centrifugal fan
CN111594482A (en) * 2020-05-11 2020-08-28 南京玛格耐特智能科技有限公司 Special bearing box for disrotatory axial flow fan

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835970A (en) * 2014-02-27 2014-06-04 上海章金工业热风机制造有限公司 Air blower
CN104533813A (en) * 2014-12-31 2015-04-22 山东圣琪生物有限公司 Multi-stage centrifugal blower
CN104791291A (en) * 2015-04-21 2015-07-22 浙江聚英风机工业有限公司 Carbon ring sealed centrifugal fan
CN111594482A (en) * 2020-05-11 2020-08-28 南京玛格耐特智能科技有限公司 Special bearing box for disrotatory axial flow fan

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130515

Termination date: 20141207

EXPY Termination of patent right or utility model