CN201136692Y

CN201136692Y - Principal axis for double helix feeding device

Info

Publication number: CN201136692Y
Application number: CNU2007200289106U
Authority: CN
Inventors: 郑江家; 王延书; 李路波
Original assignee: Qingdao Mesnac Co Ltd
Current assignee: Mesnac Co Ltd
Priority date: 2007-09-26
Filing date: 2007-09-26
Publication date: 2008-10-22
Anticipated expiration: 2017-09-26

Abstract

The utility model relates to a main shaft of a double-helix feeding device, which is used for the unloading operation of powder and granular material, and belongs to the machinery manufacturing field. The main shaft aims at that multiple vanes with different pitches ratio are used for realizing the unification and combination of the unloading speed and the feeding precision, so as to be suitable for the production requirements of the industry with higher proportion quality requirement, and improve the productivity effect and the proportion precision. The main shaft of the double-helix feeding device is provided with a hollow shaft body, the two ends of the shaft body are provided with a front shaft head and a rear shaft head, the external circumference of the main shaft is provided with a plurality of spiral vanes; the spiral vanes positioned at the side of the rear shaft head are successively divided to three continuous sections; at the section near the rear shaft head, two adjacent spiral vanes have the same pitch; the ratio of the pitch of the spiral vanes at the section near front shaft head and the pitch of the spiral vanes at the section near the rear shaft head is between 1.5 and 2.5; the ratio of the pitch of the spiral vanes at the middle section and the pitch of the spiral vanes at the section near the rear shaft head is between 1 and 2.

Description

The main shaft of double helix charging gear

Technical field

The utility model relates to a kind of main shaft that is used for the double helix charging gear of powder and granule shape material, belongs to mechanical manufacturing field.

Background technology

In industries such as rubber manufacturing machinery, chemical industry metallurgicals, take to be used for the charging gear of automatic batching system usually at present.

As following patent in first to file, application number 03268736, title current stabilization auger stripper, its major programme is that the inlet point of screw feeder housing right-hand member is connected with the discharging opening of feed bin, a screw shaft that has the spiral vane of convey materials is installed in the screw feeder housing, and the outer end of screw shaft is connected with engine installation through coupler.The pairing screw shaft part of its discharging opening is that the center with discharging opening is the left and right opposite blade on boundary.

The disclosed screw feeder of above-mentioned patent formerly, under the effect of forward and reverse helicallobe, material formed sealing when powder and granule shape material was discharged from outgate.But, because the pitch of helicallobe is identical, thereby cause whole discharge rate and feed precision to be difficult to take into account, often only can realize accelerating the thick feed production of delivery rate.For the higher industry of material proportion requirements for quality,, be difficult to satisfy the actual production requirement as industries such as publication and printing, accurate chemical industry.

The utility model content

The main shaft of double helix charging gear described in the utility model, its design goal is to address the above problem and is improved at some groups of helicallobes that are arranged on the main shaft excircle, with different pitch ratiometric multistage blades, realize that discharge rate combines with the unified of feed precision, to adapt to production requirement, enhance productivity and distributing precision for the higher industry of proportioning requirements for quality.

For realizing above-mentioned design goal, the main shaft of described double helix charging gear has:

One hollow axis body is provided with at the two ends of axis body and is used for preceding spindle nose and back spindle nose that main shaft is captiveed joint with forward and backward axle sleeve, is provided with several helicallobes at the excircle of main shaft;

In the two side ends of main shaft, described helicallobe is set to opposite two groups of rotation direction.

Difference with the prior art is characterised in that, described helicallobe, and its blade that is positioned at the first side of rear axle is divided into continuous three sections successively; Wherein,

In the section of closing on the back spindle nose, two adjacent helicallobes have identical pitch;

Helicallobe pitch before described the closing in the section of spindle nose, and the ratio of helicallobe pitch in the section of back spindle nose of closing on is between 1.5 to 2.5;

Helicallobe pitch in the interlude, and the ratio of helicallobe pitch in the section of back spindle nose of closing on is between 1 to 2.

Further improvement project is, the helicallobe before described the closing in the section of spindle nose, and to the bearing of trend of preceding spindle nose, its pitch increases equably at the back spindle nose.

Helicallobe in the described interlude, its blade shroud is around hollow axis body rotation 360 degree of main shaft.

As above content, the main shaft of described double helix charging gear has the following advantages, on main shaft, the helicallobe that is positioned at the first side of rear axle is divided into continuous three sections successively, the helicallobe pitch has nothing in common with each other in each section, and at the back spindle nose to the bearing of trend of preceding spindle nose, therefore pitch between each section increases progressively, and can have higher controllability on the control proportioning accuracy, but simultaneously also actv. improve discharge rate.

Description of drawings

Fig. 1 is the scheme drawing of described double helix charging gear;

Fig. 2 is the scheme drawing of described main shaft;

Fig. 3 be among Fig. 2 C-C to generalized section;

Fig. 4 be among Fig. 2 E-E to generalized section.

As shown in Figures 1 to 4, main shaft 1, countershaft 2, feed bin discharging opening 3, coupler 4;

Hollow axis body 10, blade 11, blade 12, preceding spindle nose 13, back spindle nose 14, section a1, section a2, section a3.

The specific embodiment

Embodiment 1, and as shown in Figure 1, the inlet point of double helix charging gear one side is connected with feed bin discharging opening 3, and two main shafts that be arranged in parallel 1, countershaft 2 are installed in its housing, to drive and convey materials by the helicallobe on the axis body.

Main shaft 1 is connected with coupler 4 by the outer end of the hollow axis body 10 of its spiral respectively with countershaft 2, and connects actuating device so that the power of axis body 10 rotation dischargings to be provided by coupler 4.

Extremely shown in Figure 4 as Fig. 2, the main shaft 1 of described double helix charging gear, spindle nose 13 and back spindle nose 14 are provided with several helicallobes at its excircle before the two ends of its hollow axis body 10 are provided with.Wherein,

Be positioned at the blade 11 of back spindle nose 14 1 side continuous distribution, with the blade 12 that is positioned at preceding spindle nose 13 1 sides, hand of spiral is opposite.

Be positioned at the blade 11 of back spindle nose 14 1 side continuous distribution, be divided into continuous three sections a1, a2 and a3 successively.

In section a1, two adjacent helicallobes have identical pitch, are 63mm.

In section a2, the pitch of helicallobe is between 63 to 120mm, and blade shroud revolves three-sixth turn around the hollow axis body 10 of main shaft.

In section a3, the pitch of helicallobe between 63 to 150mm, and from the back spindle nose 14 to the bearing of trend of preceding spindle nose 13, the pitch of helicallobe increases equably.

Claims

1, a kind of main shaft of double helix charging gear has a hollow axis body, is provided with at the two ends of axis body to be used for preceding spindle nose that main shaft is captiveed joint with forward and backward axle sleeve and back spindle nose, is provided with several helicallobes at the excircle of main shaft;

In the two side ends of main shaft, described helicallobe is set to opposite two groups of rotation direction, it is characterized in that: described helicallobe, its blade that is positioned at the first side of rear axle are divided into continuous three sections (a1), (a2) and (a3) successively; Wherein, in the section (a1) of closing on the back spindle nose, two adjacent helicallobes have identical pitch;

The pitch ratio of the helicallobe of section (a2) and section (a1) is between 1 to 2;

The pitch ratio of the helicallobe of section (a3) and section (a1) is between 1.5 to 2.5.

2, the main shaft of double helix charging gear according to claim 1 is characterized in that: in the section of described helicallobe (a3), to the bearing of trend of preceding spindle nose, the pitch of its helicallobe increases equably at the back spindle nose.

3, the main shaft of double helix charging gear according to claim 1 and 2 is characterized in that: the section of described helicallobe (a2), its blade shroud is around hollow axis body rotation 360 degree of main shaft.