CN2723737Y

CN2723737Y - Centrifugal ventilation fan special for road building business

Info

Publication number: CN2723737Y
Application number: CN 200420042175
Authority: CN
Inventors: 庞素艳; 赵向葵; 姚骊英; 王凯; 钟翠敏
Original assignee: LISHAN FAN FACTORY SHANXI
Current assignee: Xi'an Shaangu Lishan Ventilation Equipment Engineering Co., Ltd.
Priority date: 2004-07-12
Filing date: 2004-07-12
Publication date: 2005-09-07
Anticipated expiration: 2014-07-12

Abstract

The utility model discloses a centrifugal ventilation fan special for road building business, which comprises a body case, an inlet port equipped on one side of the body case, a bracket equipped on the other side, a transmission unit with a spindle equipped on the bracket. An impeller is arranged in the interior of the body case through the spindle equipped on the transmission unit and a cooling fan is equipped between the spindle next to the impeller. The other end of the spindle is connected with a drive motor equipped on the body case base through a belt pulley having a protecting cover. An air outlet is equipped on the body case and a regulation door is equipped on the air outlet. The regulation door regulates the size of the air door through a knuckle bearing fixed on a base bearing. With compact conformation, small volume, wide operating conditions regulating range, easy manufacturing installation and dismounting, the spindle of the utility model is a light axis or a stepped shaft. The axle box adopts standard unit and the bearing adopts sleeve type bearing with simple and practical installation and maintenance. The utility model is operated in the field, which is simple and practical and is convenience in installation and maintenance.

Description

A kind of centrifugal blower that is exclusively used in the industry of building the road

Technical field

The utility model belongs to energetics fluid machinery professional domain, relates to a kind of centrifugal blower of the industry that is specially adapted for building the road.

Background technique

Traditional centrifugal blower is mainly used in the ventilation field of boiler drum air inducing, dedusting, ventilation etc. and other industry.The industry of building the road belongs to a kind of emerging field, reason owing to Environmental Conditions, requirement to blower fan is strict especially, be not only common ventilation, also want the polytrope of adaptation condition and the abominable of environment, conventional blower fan can not satisfy these requirements, the employed ventilator of the industry of building the road is occupied by foreign blower fan enterprise always, in order to break this situation, must improve design to existing ventilator, make domestic blower fan industry that the special fan that satisfies the industry of building the road can be provided.

Summary of the invention

The purpose of this utility model is exactly to break the present situation that external industry is captured the special fan of the industry of building the road for a long time, and a kind of centrifugal blower that is applicable to the industry of building the road is provided.

The technical solution that realizes above-mentioned purpose is that a kind of centrifugal blower that is exclusively used in the industry of building the road is characterized in that, comprising: a casing, and a side of casing is provided with intake grill, and opposite side has support, and transmission group is installed on the support; Impeller is installed in the casing by the main shaft on the transmission group, and main shaft is near also having cooling fan between the impeller; The belt pulley of the other end of main shaft by having guard shield is connected with drive motor on the chassis base, also has exhaust outlet on the casing; Exhaust outlet is provided with adjustment doors; Adjustment doors is by being fixed in the size that joint shaft bearing on the rolling bearing units adjusts the air port.

Other characteristics of the present utility model are that described casing and support are overall structure.

Transmission group is made of main shaft and bearing housing, and main shaft is an optical axis, and bearing housing is arranged on the two ends of main shaft.

Transmission group is made of main shaft and bearing housing, and the bearing in the bearing housing is selected sleeve type bearing for use.

The centrifugal blower that is exclusively used in the industry of building the road of the present utility model, Fan Regulation door adopt joint shaft bearing to regulate, and be easy to adjust, flexible.Main shaft is an optical axis, is easy to processing, installs and dismounting.Bearing housing selection standard spare, bearing is selected sleeve type bearing for use, installs, safeguards simple.The blade of impeller adopts the model of efficient straight-plate-type backward inclined blade, makes blower fan structure compactness, volume little, and the regulating working conditions scope is wide, and execute-in-place is simple, and is convenient for installation and maintenance.

Description of drawings

Fig. 1 is a kind of example structure figure of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the transmission group structural drawing among Fig. 1;

Fig. 4 is the optical axis figure in the transmission group of Fig. 3;

Fig. 5 another kind of example structure figure of the present utility model;

Fig. 6 is the side view of Fig. 5;

Fig. 7 is the structural drawing of transmission shaft in the transmission group of Fig. 5;

Fig. 8 is the multidiameter shaft figure of the transmission group axis of no-feathering of Fig. 7;

Fig. 9 is the structural drawing of adjustment doors.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Embodiment 1:

Referring to Fig. 1～Fig. 4, Fig. 9, Fig. 1～Fig. 3 is a kind of example structure figure of the present utility model, and this centrifugal blower comprises: a casing 1; One side of casing 1 is provided with suction port 3, and opposite side has support 2, and transmission group 4 is installed on the support 2, and transmission group 4 has main shaft 9; Impeller 5 is installed in the casing 1 by the main shaft on the transmission group 49, and in order to satisfy Environmental Conditions, main shaft 9 is near also having cooling fan 6 between the impeller 5; The belt pulley of the other end of main shaft 9 by having guard shield is connected with drive motor 7 on casing 1 base, also has exhaust outlet 11 on the casing 1; Exhaust outlet 11 is provided with adjustment doors 12; Adjustment doors 12 is by being fixed in the size that joint shaft bearing 13 on the rolling bearing units 14 adjusts air port 11.

Casing 1 and support 2 are designed to the overall structure of two-opening type, and casing 1 is connected as a single entity with support 2, makes easy for installation, quick.

The wheel cap of impeller 5 adopts tapered shroud to add mouthful the structure of circle, and impeller blade adopts efficient straight-plate-type backward type, makes blower fan structure compactness, volume little, for proof strength and be added with mid-game.Wheel hub has adopted welded structure.Thereby make impeller processing, make simple and fast.

The bearing housing of transmission group has been selected standard piece for use, and bearing has been selected sleeve type bearing for use, makes main shaft become simply, easy processing, easy installation and removal, and execute-in-place is simple.For the requirement of the temperature that conforms, the spy has set up cooling fan, has guaranteed the cooling and the transmission of heat of bearing.

Transmission group 4 is made of main shaft 9 and bearing housing 10, and main shaft 9 is an optical axis, and bearing housing 10 is arranged on the two ends (Fig. 3) of main shaft 9.Bearing in the bearing housing 10 is selected sleeve type bearing for use.

Belt pulley is selected the powerful band of SP type for use, to reduce the volume of belt pulley; Improved the bearing capacity of band; Adjustment doors 12 is designed to articulated structure, has selected joint shaft bearing for use, and joint shaft bearing is fixed in (Fig. 9) on the rolling bearing units, with flexibly, damper size easily.

Main shaft 9 is optical axis or multidiameter shaft, easily processing, installation and dismounting.The bearing housing selection standard spare of supports main shaft.

The centrifugal blower that is exclusively used in the industry of building the road of the present utility model after manufacturing is finished, carries out mechanical running test by the regulation of GB/T13275, and blower air power meets the requirements according to the regulation test of GB1236.Can satisfy the requirement of the industry of building the road.

Embodiment 2:

Referring to Fig. 5～Fig. 9 another kind of example structure figure of the present utility model, different is with embodiment 1, and main shaft 9 is a multidiameter shaft, and bearing housing 10 is independent overall structure, and there is the bearings main shaft at its two ends.Can reach embodiment 1 purpose and effect equally.

Claims

1. a centrifugal blower that is exclusively used in the industry of building the road comprises: a casing (1); It is characterized in that a side of casing (1) is provided with suction port (3), opposite side has support (2), and transmission group (4) is installed on the support (2), and transmission group (4) has main shaft (9); Impeller (5) is installed in the casing (1) by the main shaft (9) on the transmission group (4), and main shaft (9) is near also having cooling fan (6) between the impeller (5); The belt pulley of the other end of main shaft (9) by having sheath is connected with drive motor (7) on casing (1) base, and casing (1) is gone up also has exhaust outlet (11); Exhaust outlet (11) is provided with adjustment doors (12); Adjustment doors (12) is by being fixed in the size that joint shaft bearing (13) on the rolling bearing units (14) adjusts air port (11).

2. the centrifugal blower that is exclusively used in the industry of building the road as claimed in claim 1 is characterized in that, described casing (1) is an overall structure with support (3).

3. the centrifugal blower that is exclusively used in the industry of building the road as claimed in claim 1 is characterized in that, transmission group (4) is made of main shaft (9) and bearing housing (10), and main shaft (9) is optical axis or multidiameter shaft, and bearing housing (10) is arranged on the two ends of main shaft (9).

4. as claim 1 or the 3 described centrifugal blowers that are exclusively used in the industry of building the road, it is characterized in that transmission group (4) is made of main shaft (9) and bearing housing (10), the bearing in the bearing housing (10) is selected sleeve type bearing for use.