阅读说明：本技术 一种采用螺旋腔体进行气力输送的风机 (Fan adopting spiral cavity for pneumatic transmission ) 是由 吴艳 赵卫君 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种采用螺旋腔体进行气力输送的风机,包括可拆卸的风机缸体,风机缸体中至少设有两根同步转轴,沿两根同步转轴长度方向的一侧设置朝向同步转轴另一侧的长度方向延伸并沿同步转轴周向进行螺旋的风叶,两根同步转轴的风叶形状大小完全相同且相互啮合,其中一根同步转轴延伸出风机缸体并连接至驱动电机,在风机缸体对应于两根同步转轴啮合后形成的至少两个送气腔体,其中一个连接风机缸体上的进气口,另一个连接风机缸体上的出气口。采用本发明的设计方案,使得输送的气力更加平稳,进一步提高输送效率,也降低了生产成本。(The invention discloses a fan adopting a spiral cavity for pneumatic conveying, which comprises a detachable fan cylinder body, wherein at least two synchronous rotating shafts are arranged in the fan cylinder body, fan blades which extend towards the length direction of the other side of the synchronous rotating shafts and are used for performing spiral along the circumferential direction of the synchronous rotating shafts are arranged along one side of the length direction of the two synchronous rotating shafts, the fan blades of the two synchronous rotating shafts are completely identical in shape and size and are mutually meshed, one synchronous rotating shaft extends out of the fan cylinder body and is connected to a driving motor, at least two air feeding cavities are formed after the fan cylinder body is meshed corresponding to the two synchronous rotating shafts, one air feeding cavity is connected with an air inlet on the fan cylinder body, and the other air feeding cavity is connected with an air outlet on the fan cylinder body. By adopting the design scheme of the invention, the conveying strength is more stable, the conveying efficiency is further improved, and the production cost is also reduced.)

1. The utility model provides an adopt spiral cavity to carry out pneumatic transmission's fan which characterized in that: the fan blade structure comprises a fan cylinder body, at least two synchronous rotating shafts are arranged in the fan cylinder body, fan blades extending towards the length direction of the other side of the synchronous rotating shafts and performing spiral along the circumferential direction of the synchronous rotating shafts are arranged on one side of the length direction of the two synchronous rotating shafts, the fan blades of the two synchronous rotating shafts are identical in shape and size and are meshed with each other, one synchronous rotating shaft extends out of the fan cylinder body and is connected to a driving motor, at least two air supply cavities are formed in the fan cylinder body after being meshed with the two synchronous rotating shafts, one air inlet is connected to the fan cylinder body, and the other air outlet is connected to the fan cylinder body.

2. The blower adopting the spiral cavity for pneumatic transmission according to claim 1, wherein: the two synchronous rotating shafts are respectively provided with three spiral blades which are uniformly distributed, and the included angle between two adjacent blades on the same synchronous rotating shaft is 120 degrees.

3. The blower adopting the spiral cavity for pneumatic transmission according to claim 1, wherein: synchronous gears which can be meshed with each other are arranged on the other side of the spiral fan blades arranged along the length direction of the two synchronous rotating shafts.

4. The blower adopting the spiral cavity for pneumatic transmission according to claim 1, wherein: the air inlet and the air outlet of the fan cylinder body are arranged on a straight line, and the axes of the two synchronous rotating shafts are symmetrical along the straight line.

5. The blower adopting the spiral cavity for pneumatic transmission according to claim 1, wherein: the fan cylinder body is a detachable fan cylinder body.

Technical Field

The invention belongs to the field of fan design, and particularly relates to a fan adopting a spiral cavity for pneumatic transmission.

Background

In order to realize high-efficiency oil-free conveying, pneumatic conveying equipment widely used in the market at present comprises a rotary fan, a Roots fan and a screw fan. Each of these three has advantages but is not suitable for the delivery of small flows of high pressure gas.

Specifically, the roots blower is complex in structure, high in cost and low in efficiency, the roots structure is adopted for the blades, the roots blower is not suitable for high-pressure conveying, the energy-saving effect is low, and the cost is high.

Although the screw fan can realize high-efficiency conveying, the structure is complex, the processing cost is high, and the investment is high, so that the popularization is not facilitated.

The rotary fan has small flow range, low efficiency and low energy-saving effect although the cost is lower.

Disclosure of Invention

The technical problem is as follows: the invention aims to solve the problem that various fans adopted in the existing pneumatic conveying mode cannot give consideration to energy conservation, efficiency and cost.

The technical scheme is as follows: the invention adopts the following technical scheme:

the utility model provides an adopt spiral cavity to carry out pneumatic transport's fan, including the fan cylinder body, be equipped with two synchronous pivot at least in the fan cylinder body, set up the length direction extension of orientation synchronous pivot opposite side and carry out the fan blade of spiral along synchronous pivot circumference along one side of two synchronous pivot length direction, the fan blade shape size of two synchronous pivot is identical and intermeshing, one of them synchronous pivot extends out the fan cylinder body and is connected to driving motor, at least two cavities of supplying air that form after the fan cylinder body corresponds to two synchronous pivot meshing, one of them connects the air inlet on the fan cylinder body, another connects the gas outlet on the fan cylinder body.

In order to simultaneously consider energy conservation, efficiency and cost, the blades are independently designed, experiments prove that a spiral blade is adopted, a spiral air groove can be formed on the blades, the air groove can be meshed and unfolded through the meshing of the two spiral blades, an air feeding cavity capable of carrying out pneumatic conveying is formed, although the meshing position of the synchronous rotating shafts is always on the connecting line of the axes of the two synchronous rotating shafts, the extruded air feeding cavity is switched in different modes, the air feeding process is continuously promoted, the energy conservation effect is achieved due to the fact that only the two blades are adopted, the cost is low, the complexity of equipment is low, the energy waste is less, the energy conservation effect is achieved, the conveying efficiency is improved, and the design for the circumferential direction of the blades is achieved.

The spiral blades are adopted, and if the common blades are adopted, intervals exist in the conveying process, so that continuous pneumatic conveying cannot be obtained.

The spiral angle also has a special point, the spiral angle can not exceed the angle of blade separation, for example, 3 blades, the spiral angle can not exceed 120 degrees, namely, the air inlet or the air outlet can only carry out air inlet or air outlet on one air feeding cavity at the same time, so that a compressed effective space can be formed, and high-pressure pneumatic transmission is formed.

Furthermore, the two synchronous rotating shafts are respectively provided with three spiral blades which are uniformly distributed, and the included angle between two adjacent blades on the same synchronous rotating shaft is 120 degrees.

In order to embody the improvement of efficiency, the fan blade is designed to be a spiral fan blade which is designed uniformly and circumferentially, at the beginning, 2 blades and 4 blades are tried, two blades are adopted, because the two blades share a spiral angle of 360 degrees together, a single blade occupies 180 degrees, and the included angle between an air inlet and an air outlet is 180 degrees, so that if the fan blade is shut down, the air compression cannot be effectively carried out at the separation position of the two blades.

If 4 blades are adopted, the air supply cavity between two blades is not butted with the air inlet and the air outlet at the same time, the meshing part of two synchronous rotating shafts extrudes the air supply cavity at the moment, if the air supply cavities are not communicated, the air pressure is overlarge, devices are damaged, if the air supply cavities are communicated, the air at the air supply part for conveying high-pressure air can be returned at the cost, the air pressure at the air outlet part is reduced, and the air supply efficiency is influenced.

The purpose of using 3 vanes is that the angle between the inlet, the meshing part of the synchronous rotating shaft and the outlet is 90 degrees, and the angle between the vanes is 120 degrees, so that no matter how the vanes are meshed, the meshed air feeding cavity is communicated with at least one of the inlet or the outlet, and is also communicated with only one of the air feeding cavities.

And then, a design scheme of 120 degrees is adopted, the included angle between the air inlet and the air outlet is 180 degrees, when the air inlet reaches the maximum air inlet angle (60 degrees), the other air feeding cavity of the air outlet is basically closed (120 degrees), and when the air inlet reaches the minimum air inlet angle (120 degrees), the other air feeding cavity of the air outlet reaches the maximum opening and closing degree (60 degrees), so that the two parties achieve the effect of dynamic balance.

Furthermore, synchronous gears capable of being meshed with each other are arranged on the other sides of the spiral fan blades arranged along the length directions of the two synchronous rotating shafts.

Further, the air inlet and the air outlet of the fan cylinder body are arranged on a straight line, and the axes of the two synchronous rotating shafts are symmetrical along the straight line.

Further, the fan cylinder body is a detachable fan cylinder body.

Has the advantages that: compared with the prior art, the invention has the following advantages:

by adopting the design scheme of the invention, the conveying strength is more stable, the conveying efficiency is further improved, and the production cost is also reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the two synchronous shafts engaging with each other according to the present invention.

Detailed Description

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

Example 1

As shown in the attached drawings 1 and 2, a fan adopting a spiral cavity for pneumatic transmission comprises a fan cylinder body 1, wherein at least two synchronous rotating shafts 2 are arranged in the fan cylinder body 1, fan blades 3 which extend towards the length direction of the other side of the synchronous rotating shafts 2 and spiral along the circumferential direction of the synchronous rotating shafts 2 are arranged along one side of the length direction of the two synchronous rotating shafts 2, the shape and the size of the fan blades 3 of the two synchronous rotating shafts 2 are completely the same and are meshed with each other, one synchronous rotating shaft 2 extends out of the fan cylinder body 1 and is connected to a driving motor (not shown), at least two air feeding cavities 4 are formed after the fan cylinder body 1 is meshed with the two synchronous rotating shafts 2, one air feeding cavity is connected with an air inlet 5 on the fan cylinder body 1, and the other air outlet 6 on the fan cylinder body 1.

In order to simultaneously consider energy conservation, efficiency and cost, the blades are independently designed, experiments prove that a spiral blade is adopted, a spiral air groove can be formed on the blades, the air groove can be meshed and unfolded through the meshing of the two spiral blades, an air feeding cavity capable of carrying out pneumatic conveying is formed, although the meshing position of the synchronous rotating shafts is always on the connecting line of the axes of the two synchronous rotating shafts, the extruded air feeding cavity is switched in different modes, the air feeding process is continuously promoted, the energy conservation effect is achieved due to the fact that only the two blades are adopted, the cost is low, the complexity of equipment is low, the energy waste is less, the energy conservation effect is achieved, the conveying efficiency is improved, and the design for the circumferential direction of the blades is achieved.

The spiral blades are adopted, and if the common blades are adopted, intervals exist in the conveying process, so that continuous pneumatic conveying cannot be obtained.

The spiral angle also has a special point, the spiral angle can not exceed the angle of blade separation, for example, 3 blades, the spiral angle can not exceed 120 degrees, namely, the air inlet or the air outlet can only carry out air inlet or air outlet on one air feeding cavity at the same time, so that a compressed effective space can be formed, and high-pressure pneumatic transmission is formed.

The two synchronous rotating shafts 2 are respectively provided with three spiral blades 3 which are uniformly distributed, and the included angle between two adjacent blades 3 on the same synchronous rotating shaft 2 is 120 degrees.

In order to embody the improvement of efficiency, the fan blade is designed to be a spiral fan blade which is designed uniformly and circumferentially, at the beginning, 2 blades and 4 blades are tried, two blades are adopted, because the two blades share a spiral angle of 360 degrees together, a single blade occupies 180 degrees, and the included angle between an air inlet and an air outlet is 180 degrees, so that if the fan blade is shut down, the air compression cannot be effectively carried out at the separation position of the two blades.

If 4 blades are adopted, the air supply cavity between two blades is not butted with the air inlet and the air outlet at the same time, the meshing part of two synchronous rotating shafts extrudes the air supply cavity at the moment, if the air supply cavities are not communicated, the air pressure is overlarge, devices are damaged, if the air supply cavities are communicated, the air at the air supply part for conveying high-pressure air can be returned at the cost, the air pressure at the air outlet part is reduced, and the air supply efficiency is influenced.

The purpose of using 3 vanes is that the angle between the inlet, the meshing part of the synchronous rotating shaft and the outlet is 90 degrees, and the angle between the vanes is 120 degrees, so that no matter how the vanes are meshed, the meshed air feeding cavity is communicated with at least one of the inlet or the outlet, and is also communicated with only one of the air feeding cavities.

And then, a design scheme of 120 degrees is adopted, the included angle between the air inlet and the air outlet is 180 degrees, when the air inlet reaches the maximum air inlet angle (60 degrees), the other air feeding cavity of the air outlet is basically closed (120 degrees), and when the air inlet reaches the minimum air inlet angle (120 degrees), the other air feeding cavity of the air outlet reaches the maximum opening and closing degree (60 degrees), so that the two parties achieve the effect of dynamic balance.

The other side of the two synchronous rotating shafts 2, which is provided with the spiral fan blades 3, is provided with a synchronous gear 7 which can be meshed with each other.

The air inlet 5 and the air outlet 6 of the fan cylinder body 1 are arranged on a straight line, and the axes of the two synchronous rotating shafts 2 are symmetrical along the straight line.

The fan cylinder body 1 is a detachable fan cylinder body 1.