CN2871923Y

CN2871923Y - Anti-explosive and leadkage-proofing Roots blower

Info

Publication number: CN2871923Y
Application number: CN 200520073951
Authority: CN
Inventors: 谢维民; 杜晓林; 江洪强
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-26
Filing date: 2005-07-26
Publication date: 2007-02-21
Anticipated expiration: 2015-07-26

Abstract

The utility model discloses an explosion proof anti-leak Roots blower, belonging to mechanical device, which comprises a drive shaft, a driven shaft, an impeller and a shell and an end cover, a fan impeller surface, a shell inner surface and an end cover surface are coated with polytetrafluoroethylene, a shaft seal sleeve is arranged on the drive shaft on the outside of the end cover and on the driven shaft, a framework oil seal is arranged outside the shaft seal sleeve, polytetrafluoroethylene coating can achieve the purpose of explosion proof, the shaft seal sleeve and the oil seal are added on the end face outer drive, the driven shaft, so as to prevent the shaft wear and gas leak effectively, and the model is applicable to delivering inflammable, explosive, corrosive, toxic, and special chemical gases.

Description

The explosion and leakage prevention Roots blower

Technical field

The utility model relates to a kind of root's blower, belongs to mechanical device.

Technical background

Roots blower extensively applies to industrial fields such as environmental protection, electric power, oil, chemical industry, grain conveying, but during special chemical gases such as that common Roots blower is carried is inflammable and explosive, corrosion is toxic, danger is very big, and its main cause is:

Itself a certain amount of gas leakage is just arranged when 1, common roots blower is carried, and do not allow to leak for special gas;

2, flammable explosive gas is not if there is burning things which may cause a fire disaster, be can combustion explosion, but the roots blower long operational time, and damages such as the impeller clearance changes, bearing cause the impeller generation spark of colliding, and the situation that the gaseous detonation accident takes place exists.Therefore, common roots blower can not be carried special chemical gases.

Summary of the invention

The utility model provides a kind of explosion and leakage prevention Roots blower inflammable and explosive, the toxic special chemical gases of corrosion that is used to carry just in order to overcome above-mentioned deficiency, and its innovative point is that blower fan is provided with the leakage that double seal prevents gas; Draught fan impeller surface, shell inner surface and end cover surface all spray the teflon explosion-proof lamp, prevent between impeller, the mill sassafras are taken place between impeller and housing, end cap and produce spark.Specifically be achieved like this: the explosion and leakage prevention Roots blower, comprise driving shaft, driven shaft, impeller and housing thereof and end cap, it is characterized in that draught fan impeller surface, shell inner surface and end cover surface all are coated with teflon, be equipped with the shaft sealing cover on the driving shaft of end cap outer side surface, the driven shaft, the outer outside framework oil seal that also is provided with of shaft sealing cover.Increase the shaft sealing cover on the axle, protected the blower fan axle, two ends and the between centers that overlaps in shaft sealing again is provided with the O RunddichtringO in addition, prevented the wearing and tearing of axle and the leakage of gas effectively; The shaft sealing of setting up at blower fan puts and adds outside framework oil seal again, has further prevented gas leakage, and for the enhanced leaktightness effect, outside framework oil seal can be designed to two layers.All spray special materials such as teflon in draught fan impeller surface, shell inner surface and end cover surface, the generation spark that can prevent to collide between inner member causes the gaseous combustion blast.

The utility model reaches explosion-proof purpose by applying polytetrafluoroethylmaterial material, on the master and slave moving axis in the end face outside, set up shaft sealing cover and oil sealing, prevented the wearing and tearing of axle and the leakage of gas effectively, be applicable to and carry inflammable and explosive, the toxic special chemical gases of corrosion.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

The explosion and leakage prevention Roots blower, comprise driving shaft (4), driven shaft (3), impeller and housing (6) thereof and end cap (7), draught fan impeller surface, housing (6) internal surface and end cap (7) surface all are coated with teflon, be equipped with shaft sealing cover (2) on the driving shaft (4) of end cap (7) outer side surface, the driven shaft (3), the two ends of shaft sealing cover (2) and between centers are provided with O RunddichtringO (5), the outer two layers of outside framework oil seal (1) that also are provided with of shaft sealing cover (2).

Claims

1. explosion and leakage prevention Roots blower, comprise driving shaft, driven shaft, impeller and housing thereof and end cap, it is characterized in that draught fan impeller surface, shell inner surface and end cover surface all are coated with teflon, be equipped with the shaft sealing cover on the driving shaft of end cap outer side surface, the driven shaft, the outer outside framework oil seal that also is provided with of shaft sealing cover.

2. explosion and leakage prevention Roots blower according to claim 1 is characterized in that the two ends and the between centers of shaft sealing cover is provided with the O RunddichtringO.

3. explosion and leakage prevention Roots blower according to claim 1 is characterized in that outside framework oil seal is designed to two layers.