CN201407177Y

CN201407177Y - Hand-operated vacuum pump

Info

Publication number: CN201407177Y
Application number: CN2009200808304U
Authority: CN
Inventors: 郑传远
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2010-02-17
Anticipated expiration: 2019-05-13

Abstract

The utility model discloses a hand-operated vacuum pump which comprises a rotary vane vacuum pump and a hand-operated transmission, wherein the hand-operated transmission is composed of a shell, an input shaft installed on the shell through a bearing, one or more than one intermediate drive shaft and one output shaft, wherein the input shaft and the output shaft are both provided with a drive gearthrough a connecting key, the intermediate drive shafts are respectively provided with two drive gears through connecting keys, the drive gears on the input shaft, the intermediate drive shafts and the output shaft are meshed step by step, a handle is further fixedly connected on the input shaft, and the output shaft is connected with the main shaft of the rotary vane vacuum pump through a shaftcoupling. The further improvement of the utility model is that the tooth number of driving gears in each step meshed drive gear is larger than that of the driven gears. The hand-operated vacuum pump has the advantages of lower cost, convenient use and high working efficiency.

Description

Hand vacuum pump

Technical field

The utility model relates to a kind of hand vacuum pump.

Background technique

At present, widely used vacuum pump generally adopts motor driving, but some mini-plants that use for family, and as vacuum tank etc., because its volume is less, cost is too high, use inconvenience to adopt motor driving then to seem.

The model utility content

The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of hand vacuum pump is provided, and it has cost advantage lower, easy to use.

For achieving the above object, hand vacuum pump of the present utility model, comprise rotary-vane vaccum pump, it is characterized in that also comprising hand speed changer, described hand speed changer comprises housing, by the input shaft of Bearing Installation on housing, intermediate propeller shaft more than one or one, one output shaft, on input shaft and output shaft, all one driving gear is installed by connecting key, on intermediate propeller shaft, two driving gears are installed separately by connecting key, input shaft, driving gear on intermediate propeller shaft and the output shaft meshes step by step, also be fixedly connected with handle on input shaft, output shaft connects with the main shaft of rotary-vane vaccum pump by coupling.

During use,, drive output shaft by driving gears at different levels and rotate, thereby drive rotary-vane vaccum pump work by handle with sleeve; Owing to need not motor and fixture thereof, have cost advantage lower, easy to use.

As further improvement of the utility model, the number of teeth of its driving wheel of driving gear of described engagements at different levels is greater than the number of teeth of follower; Can improve the rotating speed of output shaft, improve the working efficiency of rotary-vane vaccum pump.

In sum, the utlity model has that cost is lower, easy to use, the advantage of high working efficiency.

Description of drawings

Fig. 1 is the utility model embodiment's a plan view.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the B-B sectional view of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

By Fig. 1, Fig. 2 and shown in Figure 3, this hand vacuum pump, comprise rotary-vane vaccum pump 1, hand speed changer 2, described hand speed changer comprises housing 3, by the input shaft 4 of Bearing Installation on housing 3, two intermediate propeller shafts 5 and 6, one output shaft 7, on input shaft 4 and output shaft 7, all be separately installed with a

driving gear

9 and 10 by connecting key, on two intermediate propeller shafts 5 and 6, two driving gears 11 are installed separately by connecting key, 12 and 13,14,

driving gear

9 and 11,12 and 13,14 and 10 engagements step by step, the number of teeth of its driving wheel of driving gear of described engagements at different levels is greater than the number of teeth of follower; Also be fixedly connected with handle 15 on input shaft 4, output shaft 7 connects with the main shaft 16 of rotary-vane vaccum pump 1 by coupling.

During use, by handle with sleeve 15, drive output shaft 7 by driving gears at different levels and rotate, and improve its rotating speed, thereby drive rotary-vane vaccum pump 1 work; Owing to need not motor and fixture thereof, have that cost is lower, easy to use, the advantage of high working efficiency.

Claims

1. hand vacuum pump, comprise rotary-vane vaccum pump, it is characterized in that also comprising hand speed changer, described hand speed changer comprises housing, by the input shaft of Bearing Installation on housing, intermediate propeller shaft more than one or one, one output shaft, on input shaft and output shaft, all one driving gear is installed by connecting key, on intermediate propeller shaft, two driving gears are installed separately by connecting key, input shaft, driving gear on intermediate propeller shaft and the output shaft meshes step by step, also be fixedly connected with handle on input shaft, output shaft connects with the main shaft of rotary-vane vaccum pump by coupling.

2. hand vacuum pump according to claim 1, the number of teeth of its driving wheel of driving gear that it is characterized in that described engagements at different levels is greater than the number of teeth of follower.