A dust collection machine

Abstract

This utility model discloses a dust collection machine, including a machine body. A collection shaft is rotatably mounted on the bottom of the machine body, and hammer blades are provided on the collection shaft. Two interconnected negative pressure fans are provided in the machine body. The air inlet of the negative pressure fan is located above the collection shaft, and the air outlet is connected to the feeding duct. The feeding duct is located on the top of the machine body, with an arc section at its upper end and a screen plate on its outer wall. This utility model relates to the field of dust collection machine technology. The hammer blades of the collection shaft operate at a height of more than 50 mm off the ground, avoiding direct impact on the soil and reducing dust from the source. At the same time, the hammer blades can crush straw, improving collection efficiency. The air inlet of the negative pressure fan is located above the collection shaft, forming a local negative pressure field, adsorbing straw while separating dust through the dust collection screen. The positive pressure fan recycles the dust in the dust collection duct and blows up the straw close to the ground, realizing a closed loop of "collection-dust removal-reuse". The dust removal efficiency is high and there is no external dust emission.

Description

Technical Field

[0001] This utility model relates to the field of pickup machine technology, specifically a dust removal pickup machine. Background Technology

[0002] Currently, most straw-collecting machines on the domestic market use toothed springs, hammer blades, or powerful blowing and suction to collect straw. Each method has its own advantages and disadvantages.

[0003] 1. The main disadvantage of the toothed pick-up method is that the straw contains a lot of soil and can also pick up some debris. In particular, some hard items such as metals can cause great damage when they enter the crusher. It is not clean and the straw left behind is difficult to handle.

[0004] 2. Hammer pick-up has the same disadvantages as toothed pick-up, but the soil content is lower.

[0005] 3. The main disadvantage of the powerful blowing and suction type of pickup machine is that it contains a large amount of soil and generates a lot of dust at the pickup site, which pollutes the environment.

[0006] In order to avoid the disadvantages of the above three types, it is urgent to invent a picking machine that combines the advantages of the above three types of picking machines and avoids their disadvantages. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a dust collection machine that solves the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a dust collection and picking machine, comprising a body, a picking shaft rotatably mounted at the bottom of the body, a hammer blade on the picking shaft, two interconnected negative pressure fans within the body, the air inlet of the negative pressure fan being located above the picking shaft, and the air outlet being connected to a feeding duct, the feeding duct being located at the top of the body, having an arc section at its upper end, and a screen plate on its outer wall, the screen plate having a closed structure forming a dust collection duct, a positive pressure fan within the body and located behind the negative pressure fans, the air inlet of the positive pressure fan being connected to the bottom of the dust collection duct via an air inlet duct, and the air outlet being connected to a blower.

[0009] Preferably, a pair of negative pressure fans are provided with a dust removal screen at the bottom, and the top of the blower is connected to the bottom of the dust removal screen.

[0010] Preferably, the bottom of the blower is inclined toward the pickup axis.

[0011] Preferably, the negative pressure fan has a shredding blade located on its main shaft above the pickup shaft.

[0012] Preferably, a grass-turning rake is provided at the furrow position at the front end of the machine body.

[0013] Beneficial effects

[0014] This utility model provides a dust collection machine, which has the following beneficial effects:

[0015] When picking up the stalks, the hammer blades should be at least 50 mm off the ground to avoid directly hitting the soil and reduce dust from the source. At the same time, the hammer blades can crush the stalks and improve picking efficiency.

[0016] The negative pressure fan has its air inlet located above the picking shaft, forming a local negative pressure field that adsorbs straw while separating dust through the dust removal screen; the positive pressure fan draws the dust in the feeding duct into the dust removal duct and blows it out from the bottom by the blower, blowing up the straw close to the ground. It has high dust removal efficiency and no external dust discharge.

[0017] The circular arc section of the feeding duct screen uses centrifugal force to separate straw and dust. Under the action of the positive pressure fan, the dust passes through the screen and enters the dust removal duct, while the clean straw is discharged from the top of the duct. The grass-turning rake at the furrow at the front of the machine turns up the straw close to the ground, and with the help of the positive pressure fan blowing air, the straw is suspended and easy to be adsorbed by negative pressure, solving the problem that traditional picking machines cannot cleanly pick up straw close to the ground. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the practical negative pressure fan and dust removal blower.

[0020] Figure 3 This is a front view of the present invention.

[0021] Figure 4 This is a top view of the present invention.

[0022] In the diagram: 1. Machine body; 2. Pick-up shaft; 3. Hammer blade; 4. Negative pressure fan; 5. Feeding duct; 6. Screen plate; 7. Dust removal duct; 8. Positive pressure fan; 9. Air inlet duct; 10. Blowing duct; 11. Dust removal screen; 12. Crushing blade; 13. Grass turning rake. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4This utility model provides a technical solution: a dust removal and picking machine, including a body 1, a picking shaft 2 rotatably installed at the bottom of the body 1, a hammer 3 provided on the picking shaft 2, two interconnected negative pressure fans 4 provided inside the body 1, the air inlet of the negative pressure fan 4 is located above the picking shaft 2, and the air outlet is connected to the feeding air duct 5, the feeding air duct 5 is located at the top of the body 1, its upper end has an arc section, and the outer wall is provided with a screen plate 6, the screen plate 6 has a closed structure and forms a dust removal air duct 7, a positive pressure fan 8 is provided inside the body 1 and behind the negative pressure fan 4, the air inlet of the positive pressure fan 8 is connected to the bottom of the dust removal air duct 7 through an air inlet duct 9, and the air outlet is connected to a blower duct 10.

[0025] In this embodiment, the bottom of the pair of negative pressure fans 4 is provided with a dust removal screen 11, and the top of the blower 10 is connected to the bottom of the dust removal screen 11.

[0026] In this embodiment, the bottom of the blower 10 is tilted toward the pickup axis 2.

[0027] In this embodiment, the main shaft of the negative pressure fan 4 is provided with a crushing blade 12 located above the pickup shaft 2.

[0028] In this embodiment, the machine body 1 is further configured such that a grass-turning rake 13 is provided at the front furrow position.

[0029] 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 technologies in the field. The working principle and process are mainly described below.

[0030] Example: Adjust the number of negative pressure fans 4 and the height of the hammer blades 3 off the ground according to the straw density and picking width, usually 50-80 mm. Install the straw-turning rake 13 at the corresponding position of the furrow at the front end of the machine body 1. During the movement of the picker, the straw-turning rake 13 turns up the straw close to the ground; the hammer blades 3 of the picking shaft 2 rotate, hitting the standing straw and initially crushing it, while avoiding dust generation from hitting the soil. The dual negative pressure fans 4 start, forming a negative pressure field above the picking shaft 2, sucking in the crushed straw and a small amount of dust. The crushing blades 12 on the main shaft of the negative pressure fans 4 perform secondary crushing on the sucked-in straw; the straw sucked in by the two fans is combined and blown out together, while the excess positive pressure air is removed through the de-icing fan. Dust screen 11 is drawn out to achieve dust removal. The drawn-out air, together with the positive pressure air generated by the positive pressure fan 8, blows the straw on the ground up and blows it at an angle through the blower 10 toward the picking area. It blows up the straw that has been turned over by the rake 13, improving the picking effect. When the mixed airflow passes through the arc section of the feeding duct 5, the centrifugal force causes the dust to pass through the screen and enter the dust removal duct 7. Since the air inlet of the positive pressure fan 8 is connected to the dust removal duct 7, a negative pressure will be generated in the dust removal duct 7. Under the dual action of centrifugal force and negative pressure, the dust will quickly enter the dust removal duct 7, making the dust removal effect better. The clean straw is discharged from the top, with high dust removal efficiency and no dust generated outside.

[0031] 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.

[0032] 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 dust collection and picking machine, comprising a body (1), characterized in that, The bottom of the machine body (1) is rotatably installed with a pickup shaft (2). The pickup shaft (2) is provided with a hammer (3). The machine body (1) is provided with two interconnected negative pressure fans (4). The air inlet of the negative pressure fan (4) is located above the pickup shaft (2), and the air outlet is connected to the feeding air duct (5). The feeding air duct (5) is located at the top of the machine body (1). Its upper end has an arc section, and the outer wall is provided with a screen plate (6). The screen plate (6) has a closed structure and forms a dust removal air duct (7). The positive pressure fan (8) is located inside the machine body (1) and behind the negative pressure fan (4). The air inlet of the positive pressure fan (8) is connected to the bottom of the dust removal air duct (7) through the air inlet duct (9), and the air outlet is connected to the blower (10).

2. The dust collection and picking machine according to claim 1, characterized in that, The bottom of the pair of negative pressure fans (4) is provided with a dust removal screen (11), and the top of the blower (10) is connected to the bottom of the dust removal screen (11).

3. A dust collection and picking machine according to claim 2, characterized in that, The bottom of the blower (10) is inclined toward the pickup shaft (2).

4. A dust collection and picking machine according to claim 1, characterized in that, The negative pressure fan (4) has a shredding blade (12) located on the main shaft above the pickup shaft (2).

5. A dust collection and picking machine according to claim 1, characterized in that, The machine body (1) is equipped with a grass-turning rake (13) at the front furrow.

Images