阅读说明：本技术 组合式可变压缩比螺旋输送轴 (Combined type compression ratio-variable spiral conveying shaft ) 是由 石雨明 冯铁恒 马宗瑜 刘春美 杨朋 马怡琳 樊学红 刘立保 胡丽丽 韩玉杰 伞 于 2020-12-21 设计创作，主要内容包括：一种组合式可变压缩比螺旋输送轴,包括输送轴本体,输送轴本体上设置有螺旋叶片,其特征在于：所述输送轴本体沿其轴向分为可变压缩比段、固定压缩段和进料段,各段螺旋叶片的螺距不同；输送轴包括棱轴和光轴两部分,可变压缩比段的输送轴本体为棱轴,固定压缩段和进料段的输送轴本体为光轴；光轴段上的螺旋叶片与光轴固接为一体；所述棱轴上的并列套装有多个螺旋短节；每个螺旋短节包括外套和可变螺旋叶片。这种螺旋输送轴可实现各种压缩比随机调换的同时,减少成本,降低螺旋维修成本,可实现损坏螺旋的部分替换,延长整轴的使用寿命。(The utility model provides a modular variable compression ratio auger delivery axle, is provided with helical blade, its characterized in that including carrying the axle body on carrying the axle body: the conveying shaft body is divided into a variable compression ratio section, a fixed compression section and a feeding section along the axial direction of the conveying shaft body, and the screw pitches of helical blades of all the sections are different; the conveying shaft comprises a prismatic shaft and an optical axis, the conveying shaft body of the variable compression ratio section is the prismatic shaft, and the conveying shaft bodies of the fixed compression section and the feeding section are the optical axes; the helical blade on the optical axis section is fixedly connected with the optical axis into a whole; a plurality of spiral short sections are sleeved on the prismatic shaft in parallel; each of the screw nipples includes an outer sleeve and a variable helical blade. The spiral conveying shaft can realize random exchange of various compression ratios, reduce cost, reduce spiral maintenance cost, realize partial replacement of damaged spiral and prolong the service life of the whole shaft.)

1. The utility model provides a modular variable compression ratio auger delivery axle, is provided with helical blade, its characterized in that including carrying the axle body on carrying the axle body: the conveying shaft body is divided into a variable compression ratio section, a fixed compression section and a feeding section along the axial direction of the conveying shaft body, and the screw pitches of helical blades of all the sections are different;

the conveying shaft comprises a prismatic shaft and an optical axis, the conveying shaft body of the variable compression ratio section is the prismatic shaft, and the conveying shaft bodies of the fixed compression section and the feeding section are the optical axes;

the helical blade on the optical axis section is fixedly connected with the optical axis into a whole; a plurality of spiral short sections are sleeved on the prismatic shaft in parallel; each spiral short joint comprises an outer sleeve and a variable spiral blade;

the outer sleeve in the spiral short section is of a hollow circumferential cylinder structure, and the inner wall of the outer sleeve is of a polygonal structure matched with the outer wall of the prismatic shaft.

2. The combined variable compression ratio spiral conveying shaft of claim 1, wherein the prismatic shaft has a cross section that is one of square, pentagonal, or hexagonal.

3. The modular variable compression ratio spiral conveying shaft of claim 1, wherein a plurality of the spiral nipples are arranged axially in series along the polygonal shaft.

4. The modular variable compression ratio spiral conveying shaft of claim 1, wherein the pitch of the variable helical blades on each of the spiral nipples is the same.

5. The modular variable compression ratio spiral conveying shaft of claim 4, wherein the pitch of the variable helical blades on each of the spiral nipples is different.

6. The combined variable compression ratio spiral conveying shaft according to claim 1, wherein the end of the prismatic shaft is provided with a limit nut.

7. The combined type variable compression ratio spiral conveying shaft according to claim 1, wherein each jacket is provided with a limiting hole corresponding to the limiting hole provided on the prism shaft, and the limiting holes and the prism shaft are connected through a connecting piece.

Technical Field

The invention relates to a spiral conveying device, in particular to a combined type compression ratio-variable spiral conveying shaft.

Background

At present, the most important conveying part of the spiral conveying and feeding device is a conveying shaft with spiral blades. The variable compression ratio of the spiral is realized at the present stage, the most common method is realized by controlling a variable frequency motor and the material compression time, but the process is complex, the control system is also complex, and the investment cost is high. Still another mode of realizing variable compression ratio and carrying, carry epaxial helical blade to adopt the form of different pitch, but traditional transport axle is the optical axis, helical blade is the fixed cover of heliciform and establishes on the optical axis, because this part atress is big, so in long-term use, easy emergence damage, just so need change whole transport axle, and helical blade fixes on the optical axis, its pitch is unchangeable, so the function singleness of variable compression ratio, the application scope is little, need dispose the axle of different screw pitches to different materials, and is with high costs, frequently change and use influence work efficiency, and take time and take a lot of work.

Disclosure of Invention

The invention provides a combined type variable compression ratio spiral conveying shaft which uses a prism to replace a light axis and uses short sections with different screw pitches to coat the outer sleeve of a polygonal shaft to realize combination of multiple spiral pitches, aiming at the defects of the prior art proposed in the background technology.

The technical scheme adopted by the invention is as follows: the utility model provides a modular variable compression ratio auger delivery axle, is provided with helical blade, its characterized in that including carrying the axle body on carrying the axle body: the conveying shaft body is divided into a variable compression ratio section, a fixed compression section and a feeding section along the axial direction of the conveying shaft body, and the screw pitches of helical blades of all the sections are different;

the conveying shaft comprises a prismatic shaft and an optical axis, the conveying shaft body of the variable compression ratio section is the prismatic shaft, and the conveying shaft bodies of the fixed compression section and the feeding section are the optical axes;

the helical blade on the optical axis section is fixedly connected with the optical axis into a whole; a plurality of spiral short sections are sleeved on the prismatic shaft in parallel; each of the screw nipples includes an outer sleeve and a variable helical blade.

The cross section of the prism shaft is one of a square, a pentagon or a hexagon.

The outer sleeve in the spiral short section is of a hollow circumferential cylinder structure, and the inner wall of the outer sleeve is of a polygonal structure matched with the outer wall of the prismatic shaft.

And the plurality of spiral short joints are axially and serially arranged along the polygonal shaft.

The pitch of the variable helical blades on each helical sub is the same.

The pitch of the variable helical blades on each helical sub is different.

The end part of the prismatic shaft is provided with a limit nut.

Each outer sleeve is provided with a limiting hole, the limiting hole corresponds to the limiting hole arranged on the prism shaft, and the limiting hole are connected through a connecting piece.

Compared with the prior art, the variable compression ratio part of the spiral conveying shaft disclosed by the invention uses the prism to replace the optical axis, and uses the replaceable spiral short section to replace the fixedly connected spiral blade to form the combined conveying shaft, so that the cost is reduced, the spiral maintenance cost is reduced, the partial replacement of the damaged spiral can be realized, and the service life of the whole shaft is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a view from the direction B-B of fig. 1.

Fig. 3 is a schematic structural diagram of a conveying shaft without a spiral nipple.

Fig. 4 is a schematic structural diagram of a spiral nipple.

FIG. 5 is a schematic view of another spiral nipple structure.

In the figure: the variable compression ratio section 1, the fixed compression ratio section 2, the feeding section 3, the fixed helical blade 4, the conveying shaft body 5, the helical nipple 6, the limit nut 7, the outer sleeve 8 and the variable helical blade 9.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Referring to fig. 1-5, the spiral conveying shaft disclosed by the invention is a combined type variable compression ratio spiral conveying shaft, which comprises a conveying shaft body 5, wherein the conveying shaft body is divided into a variable compression ratio section 1, a fixed compression section 2 and a feeding section 3 along the axial direction of the conveying shaft body, and the screw pitches of spiral blades of the sections are different. The conveying shaft comprises a prismatic shaft 5-1 and an optical axis 5-2, the conveying shaft body of the variable compression ratio section is the prismatic shaft, and the conveying shaft bodies of the fixed compression section and the feeding section are the optical axes.

The helical blade on the optical axis section is fixedly connected with the optical axis into a whole, and the pitch of the fixed helical blade is gradually increased for fixing the helical blade 4. A plurality of spiral short sections 6 are sleeved on the prismatic shaft in parallel; each screw sub comprises a casing 8 and a variable helical blade 9.

Preferably, the cross section of the prism axis is one of a square, a pentagon or a hexagon. The outer sleeve 8 in the spiral short section is a hollow circumferential cylinder structure, and the inner wall of the outer sleeve is of a polygonal structure matched with the outer wall of the prismatic shaft. Each outer sleeve is provided with a limiting hole, the limiting hole corresponds to the limiting hole arranged on the prism shaft, and the limiting hole are connected through connecting pieces such as bolts or limiting pins.

On the conveying shaft of the whole variable compression ratio section, a plurality of spiral short sections are arranged in series along the axial direction of the multi-edge shaft. The pitch of the variable helical blades on each helical sub is the same. Or the pitch of the variable helical blades on each of the helical nipples may be different. The end part of the prismatic shaft is provided with a limit nut 7 which plays the roles of jacking and limiting.

According to different materials, the spiral pipe nipples with different pitches are selected, the same pitch can be selected, different pitches can be selected, and the pitches among the spiral pipe nipples with different pitches are gradually increased. The variable compression ratio section realizes the further compression of materials and the control of different compression ratios through the combination of spiral sections with different screw pitches.