A cotton cleaner

Abstract

The utility model belongs to cotton impurity removal equipment field, concretely relates to a cotton cleaning machine, including screening cylinder and the drive assembly of setting in screening cylinder, screening cylinder's two ends respectively be provided with feed inlet and discharge gate, the lower extreme of screening cylinder be screen cloth, drive assembly include pivot, with the auger blade and the scraper of pivot fixed connection, auger blade with pivot coaxial setting, the scraper is located the rear side of auger blade and with discharge gate correspond setting, the auger blade respectively forms first helical blade and second helical blade by means of slitting groove, the circumferential angle of first helical blade is less than the circumferential angle of second helical blade, first helical blade presents multiple group settings, second helical blade is located between two groups of first helical blade, improves the effect of removing impurity and guarantees conveying efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cotton impurity removal equipment, specifically relating to a cotton cleaning machine. Background Technology

[0002] During cotton harvesting, especially with modern mechanized methods, cotton husks, branches, and other impurities inevitably get mixed in. Traditionally, this is handled manually by sorting the cotton for these impurities, but manual sorting is inefficient and cannot meet the demands of large-scale production. Therefore, cotton cleaners were developed to replace manual sorting. However, currently available cotton cleaners often fail to meet impurity removal standards, frequently requiring cotton to undergo secondary or even multiple impurity removal processes. Therefore, processing efficiency and effectiveness still need improvement. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a cotton cleaning machine that can replace manual sorting of impurities, with high efficiency and good impurity removal effect.

[0004] The specific technical solution adopted in this utility model is as follows: A cotton cleaning machine includes a screening cylinder and a drive assembly disposed within the screening cylinder. The screening cylinder has an inlet and an outlet at its front and rear ends, respectively. The lower end of the screening cylinder is a screen. The drive assembly includes a rotating shaft, auger blades fixedly connected to the rotating shaft, and a scraper. The auger blades are coaxially arranged with the rotating shaft. The scraper is located behind the auger blades and corresponds to the outlet. The auger blades are formed into first and second spiral blades by means of slitting grooves. The circumferential angle of the first spiral blade is smaller than that of the second spiral blade. The first spiral blades are arranged in multiple groups, and the second spiral blade is located between two adjacent groups of first spiral blades.

[0005] A set of partitions is spaced apart on the rotating shaft. A set of support rods, spaced apart from the rotating shaft, runs through the edges of the partitions. The support rods are arranged in a circular array around the rotating shaft. The rotating shaft, with the help of the partitions, forms a starting section, a middle section, and a final section arranged sequentially along the front-back direction of the screening cylinder. The first spiral blade is respectively disposed on the starting section, the middle section, and the final section. The second spiral blade is respectively disposed on the middle section and the final section. The scraper is disposed on the final section. The first spiral blade, the second spiral blade, and the scraper are all suspended outward from the support rods.

[0006] The first spiral blades on the middle section are located on the front and rear sides of the second spiral blade, respectively, and the first spiral blades on the final section are all located on the rear side of the second spiral blade.

[0007] The partitions are arranged at equal intervals L on the rotating shaft, and the width of the second spiral blade along the axial direction of the rotating shaft is less than 2 / 3L and greater than or equal to 1 / 3L.

[0008] The circumferential angle of the first spiral blade is 2°-15°, and the circumferential angle of the second spiral blade is 100°-150°.

[0009] The scrapers are arranged in a circular array around the rotating shaft, and the front end of the scraper overlaps with the first spiral blade in the axial direction of the rotating shaft.

[0010] The beneficial effects of this utility model are: This invention uses segmented auger blades, which can slow down the output speed of cotton to the discharge port and perform discontinuous conveying and squeezing of cotton. While conveying cotton, it also stirs and agitates it, allowing the cotton to tumble and disperse fully in the screening cylinder, exposing the impurities wrapped in the cotton. It also allows the cotton to collide effectively with the inner wall of the screening cylinder, and the impurities are screened out from the screen, effectively improving the degree of impurity separation.

[0011] The segmented auger blades and the screening cylinder do not cause cotton to accumulate or be squeezed, which can significantly reduce the breakage rate of cotton fibers and thus improve cotton quality.

[0012] The alternating arrangement of the first and second spiral blades causes the cotton to be repeatedly dispersed and forced to collide and rub against the inner wall of the screening cylinder, improving the impurity removal effect while ensuring conveying efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the drive component. In the attached diagram, 1 is the screening cylinder, 101 is the feed inlet, 102 is the discharge outlet, 103 is the column, 2 is the rotating shaft, 201 is the starting section, 202 is the intermediate section, 203 is the ending section, 3 is the auger blade, 301 is the first spiral blade, 302 is the second spiral blade, 4 is the scraper, 5 is the partition plate, and 6 is the support rod. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Specific implementation examples Figure 1-3As shown, this utility model relates to a cotton cleaning machine, including a screening cylinder 1 and a drive assembly disposed within the screening cylinder 1. The screening cylinder 1 has an inlet 101 and an outlet 102 at its front and rear ends, respectively. The lower end of the screening cylinder 1 is a screen, which is composed of a group of columns 103 spaced apart. The columns 103 are fixedly connected by an arc-shaped connecting plate. The axial direction of the columns 103 is parallel to the axial direction of the screening cylinder 1. The gaps between the columns 103 form an impurity output channel. The drive assembly includes a rotating shaft 2, auger blades 3 fixedly connected to the rotating shaft 2, and a scraper 4. The rotating shaft 2 is parallel to the axial direction of the screening cylinder 1. The auger blades 3 are coaxial with the rotating shaft 2. The scraper 4 is located behind the auger blades 3 and corresponds to the outlet 102. The auger blades 3 form a first spiral blade 301 and a second spiral blade 302 through a cutting groove. The circumferential angle of the first spiral blade 301 is smaller than the circumferential angle of the second spiral blade 302. That is, the width of the first spiral blade 301 is smaller than the width of the second spiral blade 302. The first spiral blades 301 are arranged in multiple groups, and the second spiral blades 302 are located between two adjacent groups of first spiral blades 301. The auger blades 3 are divided into multiple segments. With the help of the segmented auger blades 3, namely the first spiral blades 301 and the second spiral blades 302, the output speed of cotton to the discharge port 102 can be slowed down, and the cotton can be conveyed and squeezed discontinuously. While conveying the cotton, it is also stirred, so that the cotton can be fully rolled and dispersed in the screening cylinder 1, and the impurities wrapped in the cotton can be fully exposed. It also makes the cotton collide effectively with the inner wall of the screening cylinder 1, and the impurities are screened out from the screen, effectively improving the degree of impurity separation. The cotton can obtain a good impurity removal effect in a single operation of the cleaning machine, without the need for the cleaning machine to process the same batch of cotton repeatedly, effectively improving the efficiency of impurity screening and meeting the needs of large-scale production.

[0015] On the other hand, the segmented auger blades 3 and the screening cylinder 1 do not cause cotton to accumulate or be squeezed, which can significantly reduce the breakage rate of cotton fibers and thus improve cotton quality.

[0016] A set of partitions 5 are spaced apart on the rotating shaft 2. A set of support rods 6, spaced apart from the rotating shaft 2, are inserted between the edges of the partitions 5. The support rods 6 are arranged in a circular array around the rotating shaft 2, forming a roller that can rotate with the rotating shaft 2. The roller rotates and contacts the cotton, causing the cotton to tumble. The rotating shaft 2, with the help of the partitions 5, forms a starting section 201, a middle section 202, and a final section 203 arranged sequentially along the front and back direction of the screening cylinder 1. The partitions 5 enhance the strength of the roller and simultaneously ensure that the cotton movement in each section of the starting section 201, the middle section 202, and the final section 203 is synchronized. The first spiral blades 301 are respectively disposed on the starting section 201, the middle section 202, and the ending section 203; the second spiral blades 302 are respectively disposed on the middle section 202 and the ending section 203; and the scraper 4 is disposed on the ending section 203. On the middle section 202, the first spiral blades 301 are located on the front and rear sides of the second spiral blades 302, and on the ending section 203, the first spiral blades 301 are all located on the rear side of the second spiral blades 302. The first spiral blades 301, the second spiral blades 302, and the scraper 4 are all suspended outward by the support rod 6, meaning that the cotton enters the screen through the feed inlet 101. Inside the selection cylinder 1, cotton sequentially passes through the initial section 201, the middle section 202, and the final section 203 before being output from the outlet 102. When the cotton passes through the initial section 201, it is only conveyed by the narrower first spiral blade 301, and not by the wider second spiral blade 302. The first spiral blade 301 gently agitates the cotton, preventing large clumps of batter from being squeezed by strong force, initially breaking down the cotton while reducing fiber breakage, and also slowing down the cotton's conveying speed to ensure thorough dispersal. When the cotton passes through the middle section 202, it is further dispersed by the second spiral blade 302. It provides strong axial thrust and avoids the cotton from sliding against the inner wall of the screening cylinder 1 due to excessive spiral length. This causes the cotton to tumble and increases the contact frequency between the cotton and the inner wall of the screening cylinder 1, allowing impurities on the dispersed cotton to be fully exposed and separated from the cotton. After passing through the second spiral blade 302, the compressed cotton continues to be disturbed and dispersed by the first spiral blade 301. When the cotton passes through the final section 203, the second spiral blade 302 continues to transport the cotton, and the first spiral blade 301 receives the cotton transported by the second spiral blade 302 and continues to disperse it, thus supplementing the screening of residual impurities in the cotton.

[0017] The scraper 4 is arranged in a circular array around the rotating shaft 2. The front end of the scraper 4 overlaps with the first spiral blade 301 in the axial direction of the rotating shaft 2, which effectively prevents cotton from being stuck between the first spiral blade 301 and the scraper 4, ensuring that the cotton is discharged from the outlet evenly and continuously, and ensuring that there is no cotton residue in the screening cylinder 1.

[0018] The first spiral blade 301 and the second spiral blade 302 are arranged alternately in a cycle, so that the cotton is repeatedly dispersed and forced to collide and rub against the inner wall of the screening cylinder 1, which improves the cleaning effect while ensuring the conveying efficiency.

[0019] The baffles 5 are arranged at equal intervals L on the rotating shaft 2. In this embodiment, a total of 4 baffles 5 are arranged. The width of the second spiral blade 302 along the axial direction of the rotating shaft 2 is less than 2 / 3L and greater than or equal to 1 / 3L, providing space for the first spiral blade 301 and the scraper 4.

[0020] The circumferential angle of the first spiral blade 301 is 2°-15°. The spiral coverage of the first spiral blade 301 is small, which can only produce local and slight disturbance to the cotton, exposing impurities in the cotton while maintaining the axial movement of the cotton. The circumferential angle of the second spiral blade 302 is 100°-150°, which improves the conveying efficiency while avoiding the phenomenon of local cotton being compacted.

Claims

1. A cotton cleaning machine, comprising a screening cylinder (1) and a drive assembly disposed within the screening cylinder (1), wherein the screening cylinder (1) has an inlet (101) and an outlet (102) respectively disposed at its front and rear ends, and the lower end of the screening cylinder (1) is a screen, characterized in that: The drive assembly includes a rotating shaft (2), auger blades (3) fixedly connected to the rotating shaft (2), and a scraper (4). The auger blades (3) are coaxially arranged with the rotating shaft (2). The scraper (4) is located on the rear side of the auger blades (3) and is correspondingly arranged with the discharge port (102). The auger blades (3) form a first spiral blade (301) and a second spiral blade (302) respectively by means of a cutting groove. The circumferential angle of the first spiral blade (301) is smaller than the circumferential angle of the second spiral blade (302). The first spiral blades (301) are arranged in multiple groups. The second spiral blades (302) are located between two adjacent groups of first spiral blades (301).

2. The cotton cleaning machine according to claim 1, characterized in that: A set of partitions (5) are spaced apart on the rotating shaft (2). A set of support rods (6) with gaps between the edges of the partitions (5) are arranged through the rotating shaft (2). The support rods (6) are arranged in a circular array around the rotating shaft (2). The rotating shaft (2) forms a starting section (201), a middle section (202) and a last section (203) arranged sequentially along the front and back direction of the screening cylinder (1) with the help of the partitions (5). The first spiral blade (301) is respectively arranged on the starting section (201), the middle section (202) and the last section (203). The second spiral blade (302) is respectively arranged on the middle section (202) and the last section (203). The scraper (4) is arranged on the last section (203). The first spiral blade (301), the second spiral blade (302) and the scraper (4) are all suspended outward from the support rods (6).

3. A cotton cleaning machine according to claim 2, characterized in that: The first spiral blade (301) on the middle section (202) is located on the front and rear sides of the second spiral blade (302), and the first spiral blade (301) on the end section (203) is located on the rear side of the second spiral blade (302).

4. A cotton cleaning machine according to claim 2, characterized in that: The partitions (5) are arranged at equal intervals L on the rotating shaft (2), and the width of the second spiral blade (302) along the axial direction of the rotating shaft (2) is less than 2 / 3L and greater than or equal to 1 / 3L.

5. A cotton cleaning machine according to claim 1, characterized in that: The circumferential angle of the first spiral blade (301) is 2°-15°, and the circumferential angle of the second spiral blade (302) is 100°-150°.

6. A cotton cleaning machine according to claim 1, characterized in that: The scraper (4) is arranged in a circular array around the rotating shaft (2), and the front end of the scraper (4) overlaps with the first spiral blade (301) in the axial direction of the rotating shaft (2).

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