Negative pressure dust removal roller screen

Abstract

The utility model discloses a negative pressure dedusting roller screen which comprises a feeding cyclone, a dedusting roller screen and a main auger, one side, close to the feeding cyclone, of the main auger is of a solid structure, and the other part of the main auger is of a hollow structure. The centrifugal fan is connected with the dust receiving lower plate, the auxiliary packing auger is rotatably installed in the dust receiving lower plate, and the dust removal roller screen and the main packing auger are opposite in rotation direction. The dust removal device relates to the technical field of roller screens, negative pressure is formed on the surface of the dust removal roller screen through the centrifugal fan, dust can be rapidly sucked away, the dust removal efficiency is greatly improved, and the dust removal efficiency is improved. The soil content in the straw is effectively reduced, the requirement of forage grass production on the straw quality is met, and the health of livestock is guaranteed; the rotating direction of the dust removal roller screen is opposite to that of the main auger, the problem that screen meshes are blocked by straw is avoided, meanwhile, the area of the straw passing through the roller screen is increased, the defects caused by size limitation of the roller screen are overcome, and the working efficiency of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary screen technology, specifically a negative pressure dust removal rotary screen. Background Technology

[0002] In forage production and other fields, vehicle-mounted straw dust removal equipment plays a crucial role in removing dust from straw, ensuring straw quality, and thus protecting livestock health. However, current vehicle-mounted straw dust removal equipment on the domestic market has significant shortcomings. On the one hand, its dust removal method mainly involves direct spraying onto a screen or a rotating screen. This method utilizes air pressure for dust removal, but the dust removal effect is extremely poor, especially in forage production. It cannot meet the 2% soil content standard, and even the 10% soil content standard is difficult to achieve, which has a significant impact on livestock health. On the other hand, due to vehicle size limitations, the dust removal equipment cannot be made too large, which poses a great challenge to the design of the equipment. Traditional designs are unable to achieve efficient dust removal functions within a limited space.

[0003] With the increasing demands for straw quality in forage production and the limitations of vehicle space, there is an urgent need for a new type of dust removal equipment that can achieve efficient dust removal in a limited space, reduce the soil content of straw, and ensure forage quality and livestock health. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a negative pressure dust removal rotary screen, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure dust removal rotary screen, comprising:

[0006] The feed cyclone is located on one side of the upper part of the machine body, and the bottom of the machine body on the side away from the feed cyclone is provided with a discharge port;

[0007] The dust removal roller screen is located inside the machine body and is supported by four rollers at each end;

[0008] The main auger is located inside the dust removal rotary screen, and its two ends are rotatably connected to the machine body through bearings. The side of the main auger closest to the feed auger is a solid structure, while the rest is a hollow structure.

[0009] A centrifugal fan is connected to a dust collection plate. The air intake force of the centrifugal fan creates a negative pressure on the surface of the dust collection roller screen. The dust collection plate is located at the bottom of the machine body.

[0010] The auxiliary auger is rotatably installed inside the dust collection plate and is used to push dust and straw fragments to the air inlet of the centrifugal fan.

[0011] The dust removal roller screen rotates in the opposite direction to the main auger.

[0012] Preferably, the inlet of the dust removal roller screen is wrapped with a screen mesh, which is located below the feed cyclone separator.

[0013] Preferably, the main auger is used to push the straw forward toward the discharge port, and its hollow structure is used to agitate the straw and separate the dust inside the straw.

[0014] Preferably, the outer right side of the machine body is provided with a drive device for driving the dust removal roller screen and the main auger to rotate.

[0015] Preferably, the left end of the main auger is connected to and driven by the auxiliary auger via a sprocket and a chain.

[0016] Preferably, the centrifugal fan is located at the bottom center of the dust collection plate, and the auxiliary auger pushes the dust and straw fragments on both sides to the air inlet of the centrifugal fan.

[0017] Beneficial effects

[0018] This utility model provides a negative pressure dust removal rotary screen, which has the following beneficial effects:

[0019] By using a centrifugal fan to create negative pressure on the surface of the dust removal sieve, dust can be quickly sucked away, greatly improving dust removal efficiency, effectively reducing the soil content in straw, meeting the straw quality requirements of forage production, and ensuring livestock health.

[0020] The dust removal rotary screen rotates in the opposite direction to the main auger, which avoids the problem of straw clogging the screen holes, while increasing the area of ​​straw passing through the rotary screen, solving the drawbacks caused by the size limitation of the rotary screen, and improving the working efficiency of the equipment.

[0021] The hollow structure of the main auger is used to agitate the straw, making it easier to separate the dust inside the straw, thus achieving effective straw treatment and improving dust removal efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front sectional view of the present invention.

[0023] Figure 2 This is a side view of the structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the main auger of this utility model.

[0025] In the diagram: 1. Feeding auger; 2. Dust collection roller screen; 3. Main auger; 4. Auxiliary auger; 5. Centrifugal fan; 6. Dust collection plate; 7. Screen. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3 This utility model provides a technical solution: a negative pressure dust removal rotary screen, comprising:

[0028] The feed cyclone 1 is located on one side of the upper part of the machine body, and the bottom of the side of the machine body away from the feed cyclone 1 is provided with a discharge port;

[0029] Dust removal roller screen 2, which is set inside the machine body and is supported by four rollers at each end;

[0030] The main auger 3 is installed inside the dust removal rotary screen 2, and its two ends are rotatably connected to the machine body through bearings. The side of the main auger 3 closest to the feed auger 1 is a solid structure, while the rest is a hollow structure.

[0031] Centrifugal fan 5 is connected to dust collection plate 6. The air intake force of centrifugal fan 5 forms a negative pressure on the surface of dust removal roller screen 2. The dust collection plate 6 is located at the bottom of the machine body.

[0032] The auxiliary auger 4 is rotatably installed inside the dust collection plate 6 and is used to push dust and straw fragments to the air inlet of the centrifugal fan 5.

[0033] The dust removal roller screen 2 rotates in the opposite direction to the main auger 3.

[0034] By adopting the above technical solution, straw enters the machine body from the feed auger 1 and falls onto the dust removal roller screen 2. The main auger 3 pushes the straw forward towards the discharge port, while its hollow structure agitates the straw, causing dust separation. The negative pressure generated by the centrifugal fan 5 forms a suction force on the surface of the dust removal roller screen 2, sucking away the dust. The auxiliary auger 4 rotates, pushing the dust and straw fragments in the dust collection plate 6 to the air inlet of the centrifugal fan 5. This achieves the functions of straw conveying, dust separation, dust removal, and collection and discharge of dust and fragments, providing a foundation for efficient dust removal.

[0035] In this embodiment, the inlet of the dust removal roller screen 2 is wrapped by a screen 7, which is located below the feed cyclone 1.

[0036] By adopting the above technical solution, after the straw enters the equipment, the screen 7 wraps around the outside of the inlet of the dust removal roller screen 2, and the main auger 3 pushes the straw into the dust removal roller screen 2.

[0037] In this embodiment, the main auger 3 is further configured to push the straw forward toward the discharge port, and its hollow structure is used to agitate the straw and separate the dust inside the straw.

[0038] In this embodiment, the machine body is further configured such that a drive device is provided on the right side of the exterior for driving the dust removal roller screen 2 and the main auger 3 to rotate.

[0039] By adopting the above technical solution, the drive device provides power to the dust removal rotary screen 2 and the main auger 3, ensuring the normal operation of the equipment.

[0040] In this embodiment, the left end of the main auger 3 is connected to and driven by the auxiliary auger 4 via a sprocket and a chain.

[0041] By adopting the above technical solution, the main auger 3 transmits power to the auxiliary auger 4 through the sprocket and chain. The auxiliary auger 4 rotates and pushes the dust and straw fragments in the dust collection plate 6 to the air inlet of the centrifugal fan 5.

[0042] In this embodiment, the centrifugal fan 5 is positioned at the bottom center of the dust collection plate 6, and the auxiliary auger 4 pushes the dust and straw fragments from both sides to the air intake of the centrifugal fan 5.

[0043] By adopting the above technical solution, the negative pressure generated by the centrifugal fan 5 causes the dust to fall through the screen 7 into the dust collection plate 6. The auxiliary auger 4 pushes the dust and straw fragments on both sides to the air inlet of the centrifugal fan 5, and the centrifugal fan 5 sucks away the dust and fragments.

[0044] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known in the field. The working principle and process are mainly described below.

[0045] Example: Straw enters the machine body through the feed cyclone 1. The drive device drives the dust removal drum screen 2 and the main auger 3 to rotate. The main auger 3 pushes the straw into the dust removal drum screen 2. Since the dust removal drum screen 2 and the main auger 3 rotate in opposite directions, this avoids the straw clogging the screen mesh 7 holes. It also increases the area of ​​the straw passing through the drum screen, solving the disadvantage of the short drum screen. The hollow structure on the main auger 3 agitates the straw, causing the dust inside the straw to separate. The negative pressure generated by the centrifugal fan 5 forms a suction force on the surface of the dust removal drum screen 2, sucking away the dust. The dust falls through the screen mesh 7 into the dust collection plate 6. The main auger 3 transmits power to the auxiliary auger 4 through the sprocket and chain. The auxiliary auger 4 rotates, pushing the dust and straw fragments in the dust collection plate 6 to the air inlet of the centrifugal fan 5. The centrifugal fan 5 sucks away the dust and fragments and discharges them, greatly increasing the dust removal efficiency and ensuring that the soil content of the straw does not exceed the standard.

[0046] It should be noted that the length of this negative pressure dust removal roller screen 2 can be adjusted as needed, while the internal structure and principle remain unchanged.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure dust removal sifting screen, characterized in that, The utility model relates to a straw dust separator, which comprises: a feeding shaker (1) arranged on one side above a machine body, wherein a discharge port is arranged at the bottom of the side of the machine body far from the feeding shaker (1); a dust removal roller screen (2) arranged inside the machine body and supported by four supporting rollers at both ends; a main auger (3) arranged inside the dust removal roller screen (2) and rotationally connected to the machine body through bearings at both ends, wherein the side of the main auger (3) close to the feeding shaker (1) is of solid structure, and the rest is of hollow structure; a centrifugal fan (5) connected to a dust collecting lower plate (6), wherein the air inlet of the centrifugal fan (5) forms a negative pressure on the surface of the dust removal roller screen (2), and the dust collecting lower plate (6) is arranged at the bottom of the machine body; a secondary auger (4) rotationally arranged inside the dust collecting lower plate (6) and used for pushing dust and straw fragments to the air inlet of the centrifugal fan (5); the rotation direction of the dust removal roller screen (2) is opposite to that of the main auger (3).

2. A negative pressure dust removal sifter according to claim 1, characterized in that, The outer side of the inlet of the dust removal roller screen (2) is wrapped by a screen mesh (7), and the screen mesh (7) is arranged below the feeding shaker (1).

3. A negative pressure dust removal sifter according to claim 1, characterized in that, The main auger (3) is used for pushing straw to move towards the discharge port, and the hollow structure of the main auger (3) is used for stirring straw to separate dust in the straw.

4. A negative pressure dust removal sifter according to claim 1, characterized in that, A driving device is arranged on the right side outside the machine body and used for driving the dust removal roller screen (2) and the main auger (3) to rotate.

5. A negative pressure dust removal sifter according to claim 1, characterized in that, The left end of the main auger (3) is connected to and driven by the secondary auger (4) through a sprocket and a chain.

6. A negative pressure dust removal sifter according to claim 1, characterized in that, The centrifugal fan (5) is arranged at the middle of the bottom of the dust collecting lower plate (6), and the secondary auger (4) pushes dust and straw fragments on both sides to the air inlet of the centrifugal fan (5).

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