A screen drum and a drop feeder

Abstract

The utility model discloses a kind of sieve drum and blanker, it is related to material air force sorting technical field.The sieve drum includes: filter assembly, rotating shaft, support assembly and air guide component;Filter assembly is tubular structure and extends along first direction;Rotating shaft is set in filter assembly inside;Rotating shaft axis and filter assembly center line coincide and are set;Support assembly is set between rotating shaft and filter assembly, and respectively with the outer surface of rotating shaft and the inner surface of filter assembly connection;Air guide component is installed in support assembly;Air guide component includes air guide ring that is sleeved in rotating shaft and extends along first direction;Air guide ring center line and filter assembly center line coincide and are set;The quantity of air guide component is 2, 2 air guide components with the center reference surface of filter assembly as symmetry plane, is set as axis symmetry;Center reference surface is perpendicular to the center line of filter assembly, and passes through the centroid of filter assembly.The sieve drum is used to make the wind power distribution uniform inside sieve drum, avoid material accumulation on sieve drum.

Description

Technical Field

[0001] This utility model relates to the field of material air separation technology, and in particular to a screen drum and a feeder. Background Technology

[0002] In the leaf re-drying workshop, the feeder is mainly used for air-powered material sorting. The material enters from the feed end (feed pipe) of the feeder and falls onto the screen drum inside the feeder. The screen drum separates the material from the impurities in the material. Specifically, the fan draws air from the screen drum, creating a negative pressure inside the screen drum. The material is adsorbed on the outer surface of the screen drum, while the impurities pass through the screen drum and are discharged from both sides of the screen drum with the gas, thus completing the separation of material and impurities.

[0003] In existing feeders, the gas inside the screen drum is discharged from both sides. Due to the different distances between the screen drum and the blower in different positions inside the screen drum, the airflow distribution inside the screen drum is uneven. This causes the material to be unevenly distributed in the direction of the screen drum, and it usually accumulates in the areas with stronger airflow. The accumulation of material can easily clog the screen drum, causing the feeder to stop.

[0004] Therefore, there is an urgent need for a screening drum to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a screen drum and a feeder to make the airflow distribution inside the screen drum uniform and prevent the material from accumulating on the screen drum.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, this utility model provides a sieve drum, which includes: a filter assembly, a rotating shaft, a support assembly, and an air guide assembly; the filter assembly has a cylindrical structure and extends along a first direction; the rotating shaft is disposed inside the filter assembly; the axis of the rotating shaft coincides with the center line of the filter assembly; the support assembly is disposed between the rotating shaft and the filter assembly, and is connected to the outer surface of the rotating shaft and the inner surface of the filter assembly respectively; the air guide assembly is installed on the support assembly; the air guide assembly includes an air guide ring sleeved on the rotating shaft and extending along the first direction; the center line of the air guide ring coincides with the center line of the filter assembly; the number of air guide assemblies is two, and the two air guide assemblies are arranged axially symmetrically with the central reference plane of the filter assembly as the plane of symmetry; the central reference plane is perpendicular to the center line of the filter assembly and passes through the centroid of the filter assembly.

[0008] In some embodiments, the air guide assembly includes a plurality of air guide rings; the plurality of air guide rings are arranged along the first direction, and the diameters of the plurality of air guide rings are set to decrease or increase along the first direction.

[0009] In some embodiments, the support assembly includes a support member; the support member has a plurality of mounting notches arranged along the first direction on one side near the rotation axis; the dimensions of the plurality of mounting notches in the second direction are set to decrease or increase along the first direction; the mounting notches are adapted to the air guide rings, and the plurality of air guide rings are respectively connected to the plurality of mounting notches one by one; the second direction is set at an angle to the first direction.

[0010] In some embodiments, two adjacent mounting notches are connected in the first direction.

[0011] In some embodiments, the number of the support members is multiple; the multiple support members are evenly spaced around the rotation axis.

[0012] In some embodiments, the screen drum further includes a retaining ring disposed at the end face of the filter assembly; the support member is provided with a first connecting portion, a second connecting portion and a third connecting portion; the first connecting portion is connected to the outer surface of the rotating shaft, the second connecting portion is connected to the inner surface of the filter assembly, and the third connecting portion is connected to the retaining ring.

[0013] In some embodiments, the fixing ring has an annular protrusion on the side near the third connecting portion; the third connecting portion has a connecting groove; and the annular protrusion engages with the connecting groove.

[0014] In some embodiments, a gap exists between the air guide assembly and the central reference plane in the first direction.

[0015] On the other hand, the present invention provides a feeder, which includes a housing, an air lock, and a screen drum as described in any of the above embodiments; the housing is provided with an inlet and an outlet; the screen drum is disposed between the inlet and the outlet and arranged along the first direction; the air lock is disposed at the outlet.

[0016] In some embodiments, the feeder further includes a brush roller disposed between the feed inlet and the discharge outlet; the axis of the brush roller is parallel to the center line of the filter assembly; the brush roller is capable of separating the material adsorbed on the outer surface of the filter assembly from the filter assembly.

[0017] The beneficial effects of this utility model are:

[0018] On the one hand, this utility model provides a screen drum, which is provided by setting a rotating shaft inside a filter assembly extending along a first direction, setting a support assembly between the rotating shaft and the filter assembly, installing an air guide assembly on the support assembly, and sleeve the air guide assembly on the rotating shaft. The air guide assembly is set as an air guide ring extending along the first direction, and the center line of the air guide ring is set to coincide with the center line of the filter assembly. At the same time, the number of air guide assemblies is set to 2, and the 2 air guide assemblies are arranged symmetrically about the central reference plane of the filter assembly. This design allows the air guide ring, fitted onto the rotating shaft and extending along the first direction, to divide the internal space of the filter assembly into a multi-layered structure. This creates airflow paths between the air guide ring and the inner surface of the filter assembly, as well as between the air guide ring and the outer surface of the rotating shaft. The regular, annular paths force the airflow along the annular channels, reducing lateral disturbances and maintaining a stable laminar flow. Simultaneously, the air guide ring divides the airflow that was originally concentrated in a certain area, preventing excessively high or low local wind speeds and ensuring uniform airflow distribution. Furthermore, by dividing the interior of the filter assembly into multiple annular airflow paths, the air guide ring suppresses the formation of rotating vortices or turbulence within the filter assembly during drum rotation, improving the stability of the airflow inside the filter assembly. Therefore, it avoids material accumulation on the drum due to uneven airflow distribution, preventing drum blockage and machine shutdown, and improving the efficiency of material separation.

[0019] On the other hand, this utility model provides a feeder that includes all the technical features of the aforementioned screen drum, and has the same beneficial effects as the screen drum, which will not be repeated here. Furthermore, when the feeder performs air separation, the air guiding component in the screen drum can balance the internal airflow, ensuring uniform airflow distribution and preventing material accumulation on the screen drum. This improves the efficiency of air separation and reduces the likelihood of the feeder needing to stop for maintenance due to screen drum blockage, thus increasing the reliability of the feeder during use and saving maintenance costs. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a sieve drum provided in a specific embodiment of this utility model;

[0021] Figure 2 This is a side view of a sieve drum provided in a specific embodiment of this utility model;

[0022] Figure 3 yes Figure 2 The structure shown is a cross-sectional view along the BB direction;

[0023] Figure 4 yes Figure 2 The structure shown is a cross-sectional view along the CC direction;

[0024] Figure 5 yes Figure 1Enlarged structural diagram of region A in the structure shown:

[0025] Figure 6 This is a structural diagram of a feeder provided in a specific embodiment of this utility model.

[0026] In the picture:

[0027] 1. Filter assembly; 11. Central reference plane; 2. Rotating shaft; 3. Support assembly; 31. Support member; 311. Mounting notch; 3111. First mounting notch; 3112. Second mounting notch; 3113. Third mounting notch; 3114. Fourth mounting notch; 3115. Fifth mounting notch; 3116. Sixth mounting notch; 312. First connecting part; 313. Second connecting part; 314. Third connecting part; 3141. Connecting groove; 4. Air guide assembly; 41. Air guide ring; 411. First air guide ring; 412. Second air guide ring; 413. Third air guide ring; 414. Fourth air guide ring; 415. Fifth air guide ring; 416. Sixth air guide ring; 5. Fixing ring; 51. Annular protrusion; 10. Housing; 101. Inlet; 102. Outlet; 20. Air lock; 30. Screen drum; 40. Brush roller;

[0028] X1, first direction; X2, second direction. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Combination Figure 1 , Figure 2 As shown, this embodiment provides a screen drum 30, which includes a filter assembly 1, a rotating shaft 2, a support assembly 3, and an air guide assembly 4.

[0034] The aforementioned filter assembly 1 has a cylindrical structure and extends along a first direction X1, where the first direction X1 is, for example, a horizontal direction. It is easy to understand that the filter assembly 1 is provided with filter holes for separating materials and impurities. Specifically, the filter assembly 1 is, for example, a cylindrical structure formed by bending a rectangular plate, and multiple filter holes are formed on this cylindrical structure, covering its outer surface. Regarding the pore size and shape of the filter holes, those skilled in the art can make specific settings according to the application scenario and requirements; no further limitations are made here. It is easy to understand that, for ease of explanation of the internal components of the filter assembly 1, Figure 1 , Figure 3 , Figure 4 The filter assembly 1 shown only has its right half displayed. In actual use, the filter assembly 1 is a complete cylindrical structure, not just the right half.

[0035] The rotating shaft 2 is disposed inside the filter assembly 1. The axis of the rotating shaft 2 coincides with the center line of the filter assembly 1. Furthermore, it is easy to understand that the dimension of the rotating shaft 2 in the first direction X1 should be larger than the dimension of the filter assembly 1 in the first direction X1. In other words, at least both ends of the rotating shaft 2 are located outside the filter assembly 1, which facilitates the connection between the drive component and the rotating shaft 2.

[0036] The aforementioned support component 3 is disposed between the rotating shaft 2 and the filter component 1, and the support component 3 is connected to both the outer surface of the rotating shaft 2 and the inner surface of the filter component 1. Here, the connection between the support component 3 and the outer surface of the rotating shaft 2 is achieved, for example, by welding, bolting, or snap-fitting. The connection between the support component 3 and the inner surface of the filter component 1 is achieved in the same way, and will not be described again here.

[0037] The air guide assembly 4 is installed on the support assembly 3, for example, by welding or snap-fit. The air guide assembly 4 includes an air guide ring 41 sleeved on the rotating shaft 2 and extending along the first direction X1. It is easy to understand that the air guide ring 41 has a circular structure and a certain length in the first direction X1. In other words, the air guide ring 41 is a relatively short cylindrical structure. The centerline of the air guide ring 41 coincides with the centerline of the filter assembly 1.

[0038] Combination Figure 1 , Figure 3 As shown, there are two air guide components 4, arranged symmetrically about the central reference plane 11 of the filter component 1. Here, the central reference plane 11 is perpendicular to the centerline of the filter component 1 and passes through the centroid of the filter component 1. That is, with... Figure 1 Taking the perspective shown as an example, both the left and right halves of the filter component 1 are provided with air guide components 4, and these two air guide components 4 are arranged symmetrically with the middle position of the filter component 1 as the plane of symmetry, or in other words, the two air guide components 4 are arranged in a mirror image.

[0039] Therefore, the screen drum 30 provided in this embodiment is provided by setting a rotating shaft 2 inside the filter assembly 1 extending along the first direction X1, setting a support assembly 3 between the rotating shaft 2 and the filter assembly 1, installing an air guide assembly 4 on the support assembly 3, and sleeve the air guide assembly 4 on the rotating shaft 2. The air guide assembly 4 is set as an air guide ring 41 extending along the first direction X1, and the center line of the air guide ring 41 is aligned with the center line of the filter assembly 1. At the same time, the number of air guide assemblies 4 is set to 2, and the two air guide assemblies 4 are arranged symmetrically about the central reference plane 11 of the filter assembly 1. This design allows the air guide ring 41, fitted onto the rotating shaft 2 and extending along the first direction X1, to divide the internal space of the filter assembly 1 into a multi-layered structure. This creates airflow paths between the air guide ring 41 and the inner surface of the filter assembly 1, and between the air guide ring 41 and the outer surface of the rotating shaft 2. The regular annular paths force the airflow along the annular channels, reducing lateral disturbances and maintaining a stable laminar flow. Simultaneously, the air guide ring 41 can divide the airflow that was originally concentrated in a certain area, preventing excessively high or low local wind speeds and ensuring uniform airflow distribution. Furthermore, by dividing the interior of the filter assembly 1 into multiple annular airflow paths, the air guide ring 41 can suppress the formation of rotating vortices or turbulence within the filter assembly 1 when the screen drum 30 rotates, improving the stability of the airflow within the filter assembly 1. Therefore, it avoids material accumulation on the screen drum 30 due to uneven airflow distribution, thus preventing blockage and shutdown, and improving the efficiency of material separation.

[0040] In some embodiments, combined with Figure 2 , Figure 3 As shown, the air guide assembly 4 includes a plurality of air guide rings 41, which are arranged along the first direction X1, and the diameters of the plurality of air guide rings 41 are set to decrease or increase along the first direction X1.

[0041] For example, a single air guide assembly 4 includes three air guide rings 41, all of which are sleeved on the rotating shaft 2 and arranged along the first direction X1. Figure 3 Taking the shown perspective as an example, the air guide assembly 4 located in the left half of the filter assembly 1 includes three air guide rings 41, which are, from left to right, a first air guide ring 411, a second air guide ring 412, and a third air guide ring 413. The diameter of the first air guide ring 411 is larger than the diameter of the second air guide ring 412, and the diameter of the second air guide ring 412 is larger than the diameter of the third air guide ring 413; alternatively, the diameter of the first air guide ring 411 is smaller than the diameter of the second air guide ring 412, and the diameter of the second air guide ring 412 is smaller than the diameter of the third air guide ring 413. Similarly, the air guide assembly 4 located in the right half of the filter assembly 1 also includes three air guide rings 41, and the arrangement of these three air guide rings 41 is axially symmetrical to the arrangement of the three air guide rings 41 located in the left half of the filter assembly 1. For example, taking... Figure 3 Taking the perspective shown as an example, the air guide assembly 4 located on the right half of the filter assembly 1 includes three air guide rings 41, which are, from left to right, the fourth air guide ring 414, the fifth air guide ring 415, and the sixth air guide ring 416. The diameter of the fourth air guide ring 414 is the same as the diameter of the third air guide ring 413, the diameter of the fifth air guide ring 415 is the same as the diameter of the second air guide ring 412, and the diameter of the sixth air guide ring 416 is the same as the diameter of the first air guide ring 411. In other words, when the diameters of the three air guide rings 41 located on the left half of the filter assembly 1 decrease from left to right, the diameters of the three air guide rings 41 located on the right half of the filter assembly 1 should increase from left to right; conversely, when the diameters of the three air guide rings 41 located on the left half of the filter assembly 1 increase from left to right, the diameters of the three air guide rings 41 located on the right half of the filter assembly 1 should decrease from left to right.

[0042] With the above configuration, multiple air guide rings 41 arranged along the first direction X1 with increasing or decreasing diameters can be used to divide the interior of the filter assembly 1 into more airflow channels, forming more annular airflow paths. This enhances the air guide assembly 4's effect on dividing airflow that was originally concentrated in a certain area, further preventing local wind speeds from being too high or too low, and making the airflow distribution more uniform. At the same time, the multiple air guide rings 41 dividing the interior of the filter assembly 1 into more annular airflow paths can enhance the suppression effect on the formation of rotating vortices or turbulence in the airflow inside the filter assembly 1 when the screen drum 30 rotates, further improving the stability of the airflow inside the filter assembly 1. This can effectively prevent material from accumulating on the screen drum 30 due to uneven airflow distribution, avoid screen drum 30 blockage leading to machine shutdown, and further improve the efficiency of material air separation.

[0043] In some embodiments, such as in combination Figure 2 , Figure 4As shown, the aforementioned support assembly 3 includes a support member 31. The support member 31 has multiple mounting notches 311 arranged along a first direction X1 on the side near the rotating shaft 2. The dimensions of the multiple mounting notches 311 in the second direction X2 decrease or increase along the first direction X1. Here, the second direction X2 forms an angle with the first direction X1, for example, 90°. That is, the second direction X2 is the radial direction of the filter assembly 1, and the first direction X1 is the axial direction of the filter assembly 1. The mounting notches 311 are adapted to the aforementioned air guide rings 41. Multiple air guide rings 41 are connected one-to-one with the multiple mounting notches 311. The connection between the air guide rings 41 and the support member 31 is achieved, for example, by welding or snap-fitting. Specifically, the support member 31 has a rectangular plate structure, and to adapt to the annular air guide rings 41, the mounting notches 311 are rectangular openings. Meanwhile, the length of the mounting notch 311 (i.e., the dimension in the second direction X2) is the same as the diameter of the corresponding air guide ring 41, and the width of the mounting notch 311 (i.e., the dimension in the first direction X1) is the same as the dimension of the corresponding air guide ring 41 in the first direction X1. Furthermore, to adapt to the air guide assembly 4, there are also two support members 31. The dimension of the support member 31 in the first direction X1 is equal to half the dimension of the filter assembly 1 in the first direction X1. The two support members 31 are respectively located on the left and right halves of the filter assembly 1, and are also axially symmetrical about the central reference plane 11 of the filter assembly 1.

[0044] For example, with Figure 4Taking the shown perspective as an example, corresponding to the number of air guide rings 41 in the air guide assembly 4 described above, the support member 31 located on the left half of the filter assembly 1 has three mounting notches 311, which are, from left to right, the first mounting notch 3111, the second mounting notch 3112, and the third mounting notch 3113. The support member 31 located on the right half of the filter assembly 1 also has three mounting notches 311, which are, from left to right, the fourth mounting notch 3114, the fifth mounting notch 3115, and the sixth mounting notch 3116. It is easy to understand that, in order to adapt to the air guide assembly 4 on the left and right halves of the filter assembly 1, the mounting notches 311 on the support member 31 located on the left half of the filter assembly 1 and the mounting notches 311 on the support member 31 located on the right half of the filter assembly 1 are also symmetrically arranged with the central reference plane 11 of the filter assembly 1 as the plane of symmetry. That is, the length of the first mounting notch 3111 (i.e., the dimension in the second direction X2) is greater than the length of the second mounting notch 3112, the length of the second mounting notch 3112 is greater than the length of the third mounting notch 3113, and the length of the fourth mounting notch 3114 is less than the length of the fifth mounting notch 3115, and the length of the fifth mounting notch 3115 is less than the length of the sixth mounting notch 3116; or, the length of the first mounting notch 3111 (i.e., the dimension in the second direction X2) is less than the length of the second mounting notch 3112, the length of the second mounting notch 3112 is less than the length of the third mounting notch 3113, and the length of the fourth mounting notch 3114 is greater than the length of the fifth mounting notch 3115, and the length of the fifth mounting notch 3115 is greater than the length of the sixth mounting notch 3116. To put it another way, when the diameter of the multiple air guide rings 41 located on the left half of the filter assembly 1 decreases in the first direction X1 (while the diameter of the multiple air guide rings 41 located on the right half of the filter assembly 1 increases in the first direction X1), the length (dimension in the second direction X2) of the multiple mounting notches 311 opened on the left half of the support member 31 also decreases in the first direction X1 (while the length of the multiple mounting notches 311 opened on the right half of the support member 31 increases); when the diameter of the multiple air guide rings 41 located on the left half of the filter assembly 1 increases in the first direction X1 (while the diameter of the multiple air guide rings 41 located on the right half of the filter assembly 1 decreases in the first direction X1), the length (dimension in the second direction X2) of the multiple mounting notches 311 opened on the left half of the support member 31 also increases in the first direction X1 (while the length of the multiple mounting notches 311 opened on the right half of the support member 31 decreases).

[0045] With the above settings, the support member 31 can be used to provide an installation position for the air guide ring 41, so that the air guide ring 41 can be given additional support, which improves the firmness of the air guide ring 41 and thus improves the reliability of the entire screen drum 30.

[0046] In some embodiments, combined with Figure 1 , Figure 3 , Figure 4 As shown, two adjacent mounting notches 311 are connected in the first direction X1. That is, with Figure 4 Taking the shown viewpoint as an example, the right side of the first mounting notch 3111 connects to the left side of the second mounting notch 3112, and the right side of the second mounting notch 3112 connects to the left side of the third mounting notch 3113; simultaneously, the right side of the fourth mounting notch 3114 connects to the left side of the fifth mounting notch 3115, and the right side of the fifth mounting notch 3115 connects to the left side of the sixth mounting notch 3116. This arrangement allows the ends of adjacent air guide rings 41 to be aligned in the second direction X2. That is, in the second direction X2, the right end of the first air guide ring 411 is aligned with the left end of the second air guide ring 412, the right end of the second air guide ring 412 is aligned with the left end of the third air guide ring 413, and the right end of the fourth air guide ring 414 is aligned with the left end of the fifth air guide ring 415, and the right end of the fifth air guide ring 415 is aligned with the left end of the sixth air guide ring 416. This reduces the gap between two adjacent air guide rings 41 in the second direction X2, avoids turbulence inside the filter assembly 1, and further improves the stability and uniformity of the airflow distribution inside the filter assembly 1.

[0047] In some embodiments, combined with Figure 1 , Figure 2 As shown, there are multiple support members 31, which are evenly spaced around the rotation shaft 2. For example, there are six support members 31, which are evenly spaced around the rotation shaft 2. In other words, the six support members 31 are arranged in a circular array with the axis of rotation of the rotation shaft 2 as the axis of rotation and a pitch angle of 60°. Through this arrangement, the air guide ring 41 in the air guide assembly 4 can be supported by multiple support members 31, which further improves the firmness of the air guide ring 41 and thus improves the reliability of the entire screen drum 30.

[0048] In some embodiments, combined with Figure 1 , Figure 2As shown, the aforementioned screen drum 30 also includes a fixing ring 5, which has a circular ring structure. The fixing ring 5 is disposed at the end face of the aforementioned filter assembly 1, specifically at the left and / or right end face of the filter assembly 1. The aforementioned support member 31 is provided with a first connecting portion 312, a second connecting portion 313, and a third connecting portion 314. The first connecting portion 312 is connected to the outer surface of the rotating shaft 2, the second connecting portion 313 is connected to the inner surface of the filter assembly 1, and the third connecting portion 314 is connected to the fixing ring 5. By providing the fixing ring 5 at the end face of the filter assembly 1 and connecting the support member 31 to the fixing ring 5, the support member 31 can be fixed using the fixing ring 5 to prevent displacement, and the overall fixing structure formed by the support member 31 and the fixing ring 5 can enhance the structural strength of the entire screen drum 30 and improve its durability.

[0049] For example, such as Figure 5 As shown, the fixing ring 5 has an annular protrusion 51 on the side near the third connecting portion 314, and the third connecting portion 314 has a connecting groove 3141. The annular protrusion 51 engages with the connecting groove 3141. It is easy to understand that the connecting groove 3141 is an annular groove that matches the annular protrusion 51. Furthermore, the positions of the annular protrusion 51 and the connecting groove 3141 are interchangeable; that is, the annular protrusion 51 is provided on the third connecting portion 314, and the connecting groove 3141 is provided on the side of the fixing ring 5 near the third connecting portion 314. This arrangement, utilizing the cooperation between the annular protrusion 51 and the connecting groove 3141, enables the third connecting portion 314 of the support member 31 to engage with the fixing ring 5. The structure is simple and convenient for installation and disassembly.

[0050] In some embodiments, such as Figure 3 As shown, in the first direction X1, there is a gap between the aforementioned air guide assembly 4 and the central reference plane 11. That is, with... Figure 3 Taking the shown perspective as an example, there is a gap between the third air guide component in the air guide assembly 4 located in the left half of the filter assembly 1 and the central reference surface 11 of the filter assembly 1. Similarly, there is also a gap between the fourth air guide component in the air guide assembly 4 located in the right half of the filter assembly 1 and the central reference surface 11 of the filter assembly 1. This arrangement ensures that the airflow in the filter assembly 1 can pass through the gap between the air guide assembly 4 and the central reference surface 11 and enter the other guide channels formed by the air guide assembly 4, allowing the airflow to circulate in multiple guide channels and ensuring that the air guide assembly 4 can function properly.

[0051] On the other hand, this embodiment provides a feeder, such as Figure 6As shown, the feeder includes a housing 10, an airlock 20, and a screen drum 30 as described in any of the embodiments above. The housing 10 of the feeder is provided with an inlet 101 and an outlet 102. The screen drum 30 is located between the inlet 101 and the outlet 102 and is arranged along the first direction X1. This allows the material to be separated to fall directly onto the screen drum 30 under gravity after entering the housing 10 through the inlet 101. At this time, the fan is used to draw air from the screen drum 30, creating a negative pressure inside the screen drum 30. This causes impurities in the material to separate from the material, pass through the filter assembly 1 into the screen drum 30 and be discharged with the airflow. At the same time, the material outside the screen drum 30 is adsorbed onto the screen drum 30 by the negative pressure. Subsequently, the screen drum 30 rotates around its own axis under the drive of the drive assembly (e.g., a rotary motor). As the screen drum 30 rotates, the material adsorbed on the screen drum 30 gradually moves from directly above the screen drum 30 to directly below the screen drum 30. At this time, the material falls off the screen drum 30 under gravity, completing the air-powered separation. The aforementioned airlock 20 is installed at the discharge port 102, allowing materials sorted by air to be discharged from the feeder. The airlock 20 can be a rotary airlock 20, enabling pressure isolation and continuous discharge within the pneumatic conveying system. Examples of such airlocks include the Minifant M99 series or the Zellofant M95 series.

[0052] With the above settings, when the feeder performs air separation, the air guide component 4 in the screen drum 30 can balance the internal air force, make the air force distribution uniform, and avoid material accumulation on the screen drum 30. This can improve the efficiency of air separation, reduce the possibility of the feeder stopping for maintenance due to screen drum 30 blockage, improve the reliability of the feeder during use, and save maintenance costs.

[0053] In some embodiments, such as Figure 6 As shown, the aforementioned feeder also includes a brush roller 40, which is disposed between the feed inlet 101 and the discharge outlet 102. Furthermore, the axis of the brush roller 40 is parallel to the centerline of the aforementioned filter assembly 1. The brush roller 40 can separate the material adsorbed on the screen drum 30 from the screen drum 30. Exemplarily, the brush roller 40 includes a roller shaft portion, a bristle portion, and a drive portion. The bristle portion of the brush roller 40 (e.g., nylon bristles, metal bristles, composite fiber bristles, etc.) contacts the aforementioned screen drum 30. When the drive portion drives the roller shaft portion to rotate, the bristle portion on the brush roller 40 scrapes against the screen drum 30, causing the material on the screen drum 30 to separate from the screen drum 30. This arrangement ensures that the material that has completed air separation can fall off the screen drum 30 in a timely manner, preventing material accumulation on the screen drum 30 and ensuring the quality of air separation.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sieve drum, characterized in that, include: The filter assembly (1) has a cylindrical structure; the filter assembly (1) extends along a first direction (X1); A rotating shaft (2) is disposed inside the filter assembly (1); the axis of the rotating shaft (2) is arranged to coincide with the center line of the filter assembly (1); A support component (3) is disposed between the rotating shaft (2) and the filter component (1), and is connected to the outer surface of the rotating shaft (2) and the inner surface of the filter component (1), respectively. An air guide assembly (4) is installed on the support assembly (3); the air guide assembly (4) includes an air guide ring (41) sleeved on the rotating shaft (2) and extending along the first direction (X1); the center line of the air guide ring (41) coincides with the center line of the filter assembly (1); The number of air guide components (4) is 2. The two air guide components (4) are arranged symmetrically with respect to the central reference plane (11) of the filter component (1). The central reference plane (11) is perpendicular to the center line of the filter component (1) and passes through the centroid of the filter component (1).

2. The sieve drum according to claim 1, characterized in that, The air guide assembly (4) includes a plurality of air guide rings (41); the plurality of air guide rings (41) are arranged along the first direction (X1), and the diameter of the plurality of air guide rings (41) is set to decrease or increase along the first direction (X1).

3. The sieve drum according to claim 2, characterized in that, The support assembly (3) includes a support member (31); the support member (31) has a plurality of mounting notches (311) arranged along the first direction (X1) on one side near the rotating shaft (2); the dimensions of the plurality of mounting notches (311) in the second direction (X2) are set to decrease or increase along the first direction (X1); The mounting notch (311) is adapted to the air guide ring (41), and the multiple air guide rings (41) are respectively connected to the multiple mounting notches (311) one by one; the second direction (X2) is set at an angle to the first direction (X1).

4. The sieve drum according to claim 3, characterized in that, The two adjacent mounting notches (311) are connected in the first direction (X1).

5. The sieve drum according to claim 3, characterized in that, The number of the support members (31) is multiple; the multiple support members (31) are evenly spaced around the rotation axis (2).

6. The sieve drum according to claim 3, characterized in that, It also includes a fixing ring (5), which is disposed at the end face of the filter assembly (1); The support member (31) is provided with a first connecting part (312), a second connecting part (313) and a third connecting part (314); the first connecting part (312) is connected to the outer surface of the rotating shaft (2), the second connecting part (313) is connected to the inner surface of the filter assembly (1), and the third connecting part (314) is connected to the fixing ring (5).

7. The sieve drum according to claim 6, characterized in that, The fixing ring (5) has an annular protrusion (51) on the side near the third connecting part (314); the third connecting part (314) has a connecting groove (3141); the annular protrusion (51) is engaged with the connecting groove (3141).

8. The sieve drum according to any one of claims 1 to 7, characterized in that, In the first direction (X1), there is a gap between the air guide assembly (4) and the central reference plane (11).

9. A feeder, characterized in that, Includes a housing (10), an airlock (20), and a screen drum as described in any one of claims 1 to 8; The housing (10) is provided with a feed inlet (101) and a discharge outlet (102); the screen drum is disposed between the feed inlet (101) and the discharge outlet (102) and is arranged along the first direction (X1); the air lock (20) is disposed at the discharge outlet (102).

10. The feeder according to claim 9, characterized in that, It also includes a brush roller (40) disposed between the feed inlet (101) and the discharge outlet (102); the axis of the brush roller (40) is arranged parallel to the center line of the filter assembly (1); the brush roller (40) is capable of separating the material adsorbed on the screen drum from the screen drum.

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