CN201189460Y

CN201189460Y - Axle end sealing device of high-speed dispersing mechanism

Info

Publication number: CN201189460Y
Application number: CNU2008201167168U
Authority: CN
Inventors: 薛国龙; 刘志坚
Original assignee: Wuxi Tongji Jiangjia Building Material Technology Co Ltd
Current assignee: Wuxi Tongji Jiangjia Building Material Technology Co Ltd
Priority date: 2008-05-06
Filing date: 2008-05-06
Publication date: 2009-02-04
Anticipated expiration: 2018-05-06

Abstract

The utility model relates to a shaft end sealing device for high-speed dispersion mechanisms, which is in particular used for the shaft end sealing when high-speed revolving shafts mix dry powder, sand and other materials. The input end of a rotating shaft is connected with an output shaft of a motor through a coupling, and the output end of the rotating shaft is supported by a bearing and is fixed on a mixing drum flange. The device is characterized in that a major spiral disc is fixed at one end of the rotating shaft; an interface for an air pipe extends into a pressure stabilizing groove in the revolute pair clearance of the major spiral disc and the mixing drum flange; a minor spiral disc is fixed at the other end of the rotating shaft; and another interface for the air pipe extends into a pressure stabilizing groove in the revolute pair clearance of the minor spiral disc and the mixing drum flange. The device has the advantages that the device reduces transmission power, saves energy consumption, puts an end to the phenomena of excessively heated axles, can prevent the intrusion of materials, and effectively keep a seal cavity clean; a sealing cover of a bearing can not suffer from the wear caused by mortar erosion, thereby guaranteeing the service life of the bearing; and the device is more convenient to mount, adjust, use and maintain, and effectively reduces manufacturing-using cost.

Description

The axle end sealing device of high speed dispersion mechanism

Technical field

The utility model relates to the axle end sealing device of a kind of high speed dispersion mechanism, and shaft end seal when specifically being used for high-speed rotating shaft for mixed powder, sand material belongs to the sealing device technical field.

Background technology

Along with China's development of economic construction, the application of green building new material---dry-mixed mortar more and more widely, the variety and quality of dry-mixed mortar constantly promotes, mixed performance to mixer requires more and more higher, so on original mixer, increased axially or radially fly cutter be high speed dispersing device, improve the mixed performance of mixer mixed material, the traditional form of these device sealings is to adopt packing seal or rubber seal sealing, because the rotating speed of this device rotating shaft is higher, when adopting the bedding and padding sealing, cement dust in the dry mortar easily blots the grease in the bedding and padding, causes dry grinding excessively heated axle phenomenon; When adopting rubber seal to seal, dry mortar is very big to the erosion wear of sealing ring, and service life is short, and sealing was lost efficacy easily, causes Lou material and block bearing damage, causes equipment fault.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, thereby provide a kind of unidirectional promotion of spiral of rotation at a high speed that utilizes, and be aided with the effect of constant voltage air-flow, effectively material is blocked in outside the annular seal space axle end sealing device of the high speed dispersion mechanism in guarantee to seal reliable and block bearing service life.

Main solution of the present utility model is achieved in that

The utility model adopts motor to be fastened on the support, the input of rotating shaft connects with motor output shaft by shaft coupling, for rotating shaft provides power, the rotating shaft power intake is fixed on the support by the bearing supporting, support is fixed on to be mixed on the drum flange, the rotating shaft output is fixed on by the bearing supporting and mixes on the drum flange, feature is a fixedly king bolt dish of rotating shaft one end, air pipe interface stretches in king bolt dish and the revolute pair of the mixing drum flange pressure stabilizing tank at interval, the minor spiral dish is fixed on the other end of rotating shaft, and air pipe interface stretches in minor spiral dish and the revolute pair of the mixing drum flange pressure stabilizing tank at interval.

Described king bolt dish and mix between the endoporus of drum flange and maintain less gap, king bolt dish tip circle inboard is provided with an annular air storing cavity.

Described minor spiral dish and mix between the endoporus of drum flange and maintain less gap, minor spiral dish tip circle inboard is provided with an annular air storing cavity.

Compared with the prior art the utility model has the following advantages:

1, do not adopt bedding and padding, there is the gap in the annular seal space revolute pair, has eliminated the frictional resistance of bedding and padding sealings, has reduced transmission power, and energy efficient has also been stopped the excessively heated axle phenomenon.

2, do not adopt rubber framework grease seal, reduced the machining accuracy that replaces the spare parts mutually, reduced manufacturing cost, and avoided because the sealing of rubber is easy to wear, service life, weak point and lubricating oil entered the accident that dry mortar influences product quality.

3, the utility model is a kind of combined sealed; utilize the screw propulsion principle; stop the dry sand slurry to enter annular seal space effectively; the adjustable air-flow of constant voltage is from inside to outside taken away the micro-fine powder material that enters in the annular seal space simultaneously; also in the interval of revolute pair, form a pressurized seal ring simultaneously; stop the intrusion of material; the cleaning that has kept annular seal space effectively; protected can not be subjected to mortar with the tightly interdependent rolling bearing units seal cover of annular seal space and corrode the wearing and tearing that cause, guaranteed the service life of bearing.

4, because special hermetically-sealed construction form and reliable sealing effect, make that the sealing of equipment and block bearing are fused easily to be one, the form that needn't adopt sealing to separate with block bearing, make total simpler, it is more convenient that adjustment and working service are installed, and reduced manufacturing cost and use cost effectively.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

As shown in Figure 1, mainly comprise motor 1, bolt 2, support 3, shaft coupling 4, bolt 5, bearing 6, bolt 7, mix drum flange 8, air pipe interface 9, king bolt dish 10, screw 11, rotating shaft 12, screw 13, minor spiral dish 14, mix drum flange 15 and air pipe interface 16 etc.

The utility model motor 1 usefulness bolt 2 is fastened on the support 3, motor shaft connects with rotating shaft 12 by shaft coupling 4, rotating shaft 12 power intakes are fixed on the support 3 by bearing 6 supportings and with bolt 5, support 3 usefulness bolts 7 are fixed on to be mixed on the drum flange 8, king bolt dish 10 usefulness screws 11 are fixed in the rotating shaft 12, release with rotating shaft turning handle mortar.Compressed air enters in the pressure stabilizing tank in king bolt dish 10 and the revolute pair gap of mixing drum flange 8 by air pipe interface 9, and the sand powder in the chamber is taken in exhaust out of in mixing tube.

Minor spiral dish 14 usefulness screws 13 are fixed on the other end of rotating shaft 12 and release with axle turning handle mortar, compressed air enters in the pressure stabilizing tank in minor spiral dish 14 and the revolute pair gap of mixing drum flange 15 by air pipe interface 16, and the sand powder is taken in exhaust out of in mixing tube.Rotating shaft 12 is fixed on by bearing 17 supportings and with bolt 18 and mixes on the drum flange 15.The input of rotating shaft 12 makes rotating shaft work and reaches reliable spiral and the effect of air pressure combination sealing by the motor transferring power.

The operation principle of the present utility model and the course of work:

The utility model increases a helical disk that is fixed in the rotating shaft owing to make mortar material one side dry up at the annular seal space of axle end sealing device, because helical disk is with the high speed rotation of axle, the rotation direction of spiral is all the time at outside pusher state, constantly extrapolated the dry mortar of in mixing and splashing, invading annular seal space, stoped the dry mortar intrusion.The tip circle of big or small helical disk and mix between the endoporus of drum flange and keep less gap respectively simultaneously, the tip circle outside with mix an interior dry mortar and contact, there is an annular air storing cavity tip circle inboard, from the outside constantly replenish the compressed air that enters by annular air storing cavity voltage stabilizing after, from helical disk stud slot and Pan Ding gap, discharge, the micro-dry mortar of invading is taken away, kept annular seal space not to be subjected to the erosion and the wearing and tearing of dry mortar, also just guaranteed the effect that seals effectively.

Claims

1, the axle end sealing device of a kind of high speed dispersion mechanism, adopt motor (1) to be fastened on the support (3), the input of rotating shaft (12) connects with motor (1) output shaft by shaft coupling (4), rotating shaft (12) power intake is fixed on the support (3) by bearing (6) supporting, support (3) is fixed on to be mixed on the drum flange (8), rotating shaft (12) output is fixed on by bearing 17 supportings and mixes on the drum flange (15), it is characterized in that fixedly king bolt dish (10) of rotating shaft (12) one ends, air pipe interface (9) stretches in king bolt dish (10) and the revolute pair of mixing drum flange (8) pressure stabilizing tank at interval, minor spiral dish (14) is fixed on the other end of rotating shaft (12), and air pipe interface (16) stretches in minor spiral dish (14) and the revolute pair of mixing drum flange (15) pressure stabilizing tank at interval.

2, the axle end sealing device of high speed dispersion according to claim 1 mechanism is characterized in that described king bolt dish (10) and mixes between the endoporus of drum flange (8) maintaining the gap, and king bolt dish tip circle inboard is provided with an annular air storing cavity.

3, the axle end sealing device of high speed dispersion according to claim 1 mechanism is characterized in that described minor spiral dish (14) and mixes between the endoporus of drum flange (15) maintaining the gap, and minor spiral dish tip circle inboard is provided with an annular air storing cavity.