Air screening machine

Abstract

The utility model provides an air screening machine which comprises a machine main body, a dust removal assembly and a screening assembly, a grain inlet is formed in the top of the machine main body, a blanking blocking section and a dust discharge channel communicated with the blanking blocking section are formed in an inner cavity of the machine main body, and the blanking blocking section is arranged below the grain inlet and used for slowing down the grain falling speed. The dust removal assembly comprises a fan assembly and an impurity discharge assembly, the impurity discharge assembly is located below the fan assembly, and the impurity discharge assembly communicates with the dust discharge channel. The screening assembly is located below the falling material blocking and buffering section and used for screening grain from the falling material blocking and buffering section, and screened impurities are discharged out of the machine body through the impurity outlet. In the embodiment of the invention, dust and straw mixed in the materials can be blown out in the slow falling process through the material falling retarding section and the fan assembly, the materials are screened in cooperation with the screening assembly, the straw in the materials can be reduced to a large extent, discharged grains are cleaner, and the amount of dust and straw in the discharged grains is small.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a wind sieve machine. Background Technology

[0002] A pneumatic sieve is a device that uses wind power and a screen to screen and grade materials, and it is frequently used in grain screening. However, pneumatic sieves suffer from technical problems such as producing a lot of dust and long straw mixed in with the grain at the output, resulting in poor screening efficiency. Utility Model Content

[0003] The main purpose of this utility model is to provide a wind sieve machine to solve the problems of excessive dust and long straw mixed in with the grain in the prior art.

[0004] To achieve the above objectives, this utility model provides a pneumatic screening machine, including a main body, a dust removal component, and a screening component, wherein...

[0005] The top of the main body of the machine has a grain inlet, the bottom of the main body of the machine has a grain outlet and an impurity outlet, the inner cavity of the main body of the machine has a material falling section and a dust discharge channel connecting the material falling section, and the material falling section is located below the grain inlet to slow down the falling speed of the grain.

[0006] The dust removal assembly includes a fan assembly and an impurity discharge assembly. The fan assembly includes an air inlet and an air outlet arranged opposite to each other. The air inlet is connected to the dust discharge channel. The air outlet is located outside the main body of the machine. The impurity discharge assembly is located inside the main body of the machine and below the fan assembly. The impurity discharge assembly is connected to the dust discharge channel and is used to discharge light impurities in the grain to the outside of the main body of the machine.

[0007] The screening component is located below the material discharge buffer section. The screening component is used to screen the grain from the material discharge buffer section. The grain screened by the screening component is discharged to the outside of the machine body through the grain outlet. The impurities screened by the screening component are discharged to the outside of the machine body through the impurity outlet.

[0008] In one embodiment, the material dropping section includes a first material dropping component and a second material dropping component. Both the first material dropping component and the second material dropping component are inclined downwards and are perpendicular to each other.

[0009] In one embodiment, the main body of the machine further includes a quantitative feeding structure, which is a rotating wheel with a stop block connected to its surface. The quantitative feeding structure is rotatably disposed at the lower end of the feed inlet.

[0010] In one embodiment, the screening assembly includes a distribution plate, a first shaking screen, a second shaking screen, and a rocker arm, wherein,

[0011] The distribution plate is located below the material discharge buffer section and is used to distribute materials from the material discharge buffer section;

[0012] The first and second shaking screens are arranged vertically, and the rocker arm is located between the first and second shaking screens.

[0013] In one embodiment, the lower end of the distribution plate extends downward at an angle in different directions, leading to the first shaking screen and the second shaking screen respectively, to separate materials.

[0014] In one embodiment, the rocker arm is an eccentric wheel rocker arm, which is rotatably connected to the first and second shaking screens, driving the first and second shaking screens to shake.

[0015] In one embodiment, the grain outlet is located below the screening component, allowing the screened material to pass through.

[0016] In one embodiment, the first shaking screen includes a first bottom frame and a first screen, the end of the first screen being connected to the impurity outlet, and the first bottom frame being connected to the grain outlet.

[0017] In one embodiment, the second shaking screen includes a second bottom frame and a second screen, the end of the second screen being connected to the impurity outlet, and the second bottom frame being connected to the grain outlet.

[0018] In one embodiment, there are multiple impurity outlets, each corresponding to the end of the first screen and the second screen.

[0019] In this embodiment, the material falling slow section and the fan assembly can blow out the dust and straw mixed in with the material during the slow falling process. Combined with the screening assembly to screen the material, the straw in the material can be reduced to a large extent, so that the grain output is cleaner and there is less dust and straw in the output grain. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the air screen machine in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the material discharge damping section and dust removal component in one embodiment of the present invention.

[0023] Figure Descriptions: 1. Main body of the machine; 11. Grain inlet; 12. Grain outlet; 13. Impurity outlet; 14. Material discharge damping section; 141. First material discharge damping component; 142. Second material discharge damping component; 15. Dust removal channel; 16. Quantitative grain feeding structure; 2. Dust removal component; 21. Fan component; 211. Air inlet; 212. Air outlet; 22. Impurity discharge component; 3. Screening component; 31. Distribution plate; 32. Rocker arm; 33. First shaking screen; 34. Second shaking screen. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, devices, and materials similar to or equivalent to those described, used, or made of materials in the embodiments of this invention.

[0027] This utility model provides a pneumatic screening machine, including a main body 1, a dust removal component 2, and a screening component 3, wherein...

[0028] The top of the main body 1 has a grain inlet 11, the bottom of the main body 1 has a grain outlet 12 and an impurity outlet 13, and the inner cavity of the main body 1 has a material falling section 14 and a dust discharge channel 15 that connects to the material falling section 14. The material falling section 14 is located below the grain inlet 11 to slow down the falling speed of the grain.

[0029] The dust removal assembly 2 includes a fan assembly 21 and an impurity discharge assembly 22. The fan assembly 21 includes an air inlet 211 and an air outlet 212 that are arranged opposite to each other. The air inlet 211 is connected to the dust discharge channel 15, and the air outlet 212 is located outside the main body 1. The impurity discharge assembly 22 is located inside the main body 1 and below the fan assembly 21. The impurity discharge assembly 22 is connected to the dust discharge channel 15 and is used to discharge light impurities in the grain to the outside of the main body 1.

[0030] The screening component 3 is located below the material discharge buffer section 14. The screening component 3 is used to screen the grain from the material discharge buffer section 14. The grain screened by the screening component 3 is discharged to the outside of the machine body 1 through the grain outlet 12. The impurities screened by the screening component 3 are discharged to the outside of the machine body 1 through the impurity outlet 13.

[0031] For example, the impurity discharge assembly 22 employs a screw conveyor to continuously discharge lightweight materials sucked up by the blower assembly 21.

[0032] In this embodiment, the material discharge buffer section 14 and the dust discharge channel 15 are connected, and the air inlet end 211 of the blower assembly 21 is also connected to the dust discharge channel 15. When the material passes through the material discharge buffer section 14, the blower assembly 21 can absorb dust and straw and other impurities in the material, separate the impurities from the material, and discharge the impurities through the impurity discharge assembly 22. This can initially clean the material to facilitate the subsequent screening process.

[0033] In one embodiment, the material dropping section 14 includes a first material dropping component 141 and a second material dropping component 142. Both the first material dropping component 141 and the second material dropping component 142 are inclined downwards and are perpendicular to each other.

[0034] For example, the first material discharge damping component 141 and the second material discharge damping component 142 are multiple spaced partitions, the first material discharge damping component 141 is inclined downward in the direction toward the dust removal component 2, and the second material discharge damping component 142 is inclined downward in the direction away from the dust removal component 2.

[0035] In this embodiment, the first material dropping buffer component 141 and the second material dropping buffer component 142 are perpendicular to each other and both are inclined downwards. This allows the falling material to be temporarily slowed down by the first material dropping buffer component 141 and the second material dropping buffer component 142 in sequence, so that the fan component 21 can extract as many impurities as possible from the material and improve the screening effect.

[0036] In one embodiment, the main body 1 further includes a quantitative feeding structure 16, which is a rotating wheel with a stop block connected to its surface. The quantitative feeding structure 16 is rotatably disposed at the lower end of the feed inlet 11.

[0037] In this embodiment, the quantitative feeding structure allows the material to fall intermittently into the material feeding blocking section 14 during rotation. Each time a fixed amount of material is added, the material carried by the subsequent screening component 3 is kept within a relatively balanced range, which makes the working process of the air screen more stable and efficient, and reduces the probability of failure or poor screening effect caused by excessive material.

[0038] In one embodiment, the screening assembly 3 includes a distribution plate 31, a first shaking screen 33, a second shaking screen 34, and a rocker arm 32, wherein,

[0039] The distribution plate 31 is located below the material discharge buffer section 14 and is used to distribute the material from the material discharge buffer section 14.

[0040] The first shaking screen 33 and the second shaking screen 34 are arranged vertically, with the rocker arm 32 located between the first shaking screen 33 and the second shaking screen 34.

[0041] In this embodiment, the distribution plate 31 is connected below the material discharge buffer section 14, which can divert the material from the material discharge buffer section 14 so that the material falls into the first shaking screen 33 and the second shaking screen 34 respectively. The first shaking screen 33 and the second shaking screen 34 are arranged vertically, which can make the first shaking screen 33 and the second shaking screen 34 work simultaneously, greatly improving the screening efficiency. The rocker arm 32 can provide power to the first shaking screen 33 and the second shaking screen 34. The rocker arm 32 is set between the first shaking screen 33 and the second shaking screen 34, which can save space and facilitate the unified maintenance of the equipment.

[0042] In one embodiment, the lower end of the distribution plate 31 extends downward at an angle in different directions, leading to the first shaking screen 33 and the second shaking screen 34 respectively, to separate materials.

[0043] In this embodiment, the lower end of the distribution plate 31 extends downward at an angle in different directions, leading to the first shaking screen 33 and the second shaking screen 34 respectively. This allows the material to flow to the first shaking screen 33 and the second shaking screen 34 under the action of gravity. This structure is relatively simple and convenient, easy to maintain and not prone to failure. It can also be adjusted according to different materials, and has strong stability and applicability.

[0044] In one embodiment, the rocker arm 32 is an eccentric wheel rocker arm 32, which is rotatably connected to the first shaking screen 33 and the second shaking screen 34, thereby driving the first shaking screen 33 and the second shaking screen 34 to shake.

[0045] In this embodiment, the rocker arm 32 is an eccentric wheel rocker arm 32. This structure has high stability and can adjust the shaking amplitude and frequency of the first shaking screen 33 and the second shaking screen 34 to adapt to the screening requirements of different materials. Moreover, the structure of the eccentric wheel is simple and the power transmission efficiency is high.

[0046] In one embodiment, the grain outlet 12 is located below the screening component 3 for the screened material to pass through.

[0047] In one embodiment, the first shaking screen 33 includes a first bottom frame and a first screen, the end of the first screen being connected to the impurity outlet 13, and the first bottom frame being connected to the grain outlet 12.

[0048] In one embodiment, the second shaking screen 34 includes a second bottom frame and a second screen, the end of the second screen being connected to the impurity outlet 13, and the second bottom frame being connected to the grain outlet 12.

[0049] It should be noted that the grain outlet 12 is located below the grain outlet end of the first shaking screen 33 and the second shaking screen 34, at the end opposite to the distribution plate 31. The lower ends of the first and second bottom frames have partition plates to guide the screened material to the grain outlet 12.

[0050] In this embodiment, the grain outlet 12 is located below the screening component 3, which can efficiently collect materials. During the material screening process, the lower position of the grain outlet 12 also makes it easier for workers to clean up the accumulated materials or dust at the grain outlet 12.

[0051] The first shaking screen 33 includes a first bottom frame and a first screen, and the second shaking screen 34 includes a second bottom frame and a second screen. The first screen and the second screen can further screen out impurities in the material and discharge the impurities through the impurity outlet 13. This can reduce the amount of dust and straw mixed in the screened material and improve the screening effect.

[0052] In one embodiment, there are multiple impurity outlets 13, each corresponding to the end of the first screen and the second screen.

[0053] In this embodiment, there are multiple impurity outlets 13, which correspond to the ends of the first screen and the second screen respectively. This can improve the impurity discharge speed, reduce impurity accumulation, and thus improve the stability and continuity of the screening component 3.

[0054] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A pneumatic screener, characterized in that, It includes the main body of the machine, dust removal components, and screening components, among which, The top of the main body of the machine has a grain inlet, the bottom of the main body of the machine has a grain outlet and an impurity outlet, the inner cavity of the main body of the machine has a material falling section and a dust discharge channel connecting the material falling section, and the material falling section is located below the grain inlet to slow down the falling speed of the grain. The dust removal assembly includes a fan assembly and an impurity discharge assembly. The fan assembly includes an air inlet and an air outlet arranged opposite to each other. The air inlet is connected to the dust discharge channel. The air outlet is located outside the main body of the machine. The impurity discharge assembly is located inside the main body of the machine and below the fan assembly. The impurity discharge assembly is connected to the dust discharge channel and is used to discharge light impurities in the grain to the outside of the main body of the machine. The screening component is located below the material discharge buffer section. The screening component is used to screen the grain from the material discharge buffer section. The grain screened by the screening component is discharged to the outside of the machine body through the grain outlet. The impurities screened by the screening component are discharged to the outside of the machine body through the impurity outlet.

2. The air screen machine according to claim 1, characterized in that, The material discharge damping section includes a first material discharge damping component and a second material discharge damping component. Both the first material discharge damping component and the second material discharge damping component are inclined downwards and are perpendicular to each other.

3. The air screen machine according to claim 1, characterized in that, The main body of the machine also includes a quantitative feeding structure, which is a rotating wheel with a stop block connected to its surface. The quantitative feeding structure is rotatably disposed at the lower end of the grain inlet.

4. The air screen machine according to claim 1, characterized in that, The screening assembly includes a distribution plate, a first shaking screen, a second shaking screen, and a rocker arm, wherein, The distribution plate is located below the material discharge buffer section and is used to distribute materials from the material discharge buffer section; The first and second shaking screens are arranged vertically, and the rocker arm is located between the first and second shaking screens.

5. The air screen machine according to claim 4, characterized in that, The lower end of the distribution plate extends downward at an angle in different directions, leading to the first shaking screen and the second shaking screen respectively, so as to separate materials.

6. The air sieve machine according to claim 4, characterized in that, The rocker arm is an eccentric wheel rocker arm, which is rotatably connected to the first and second shaking screens, driving the first and second shaking screens to shake.

7. The air screen machine according to claim 4, characterized in that, The grain outlet is located below the screening component, allowing the screened material to pass through.

8. The air screen machine according to claim 4, characterized in that, The first shaking screen includes a first bottom frame and a first screen, the end of the first screen is connected to the impurity outlet, and the first bottom frame leads to the grain outlet.

9. The air sieve machine according to claim 8, characterized in that, The second shaking screen includes a second bottom frame and a second screen, the end of the second screen is connected to the impurity outlet, and the second bottom frame leads to the grain outlet.

10. The air screen machine according to claim 9, characterized in that, The number of impurity outlets is multiple, each corresponding to the end of the first screen and the second screen.

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