An air separator

Abstract

The embodiment of the present disclosure relates to the technical field of coal preparation equipment, and provides a winnowing machine, which comprises a base and a sieve body located above the base, a plurality of branch support arms, one end of each of the branch support arms being hinged to the base and the other end being hinged to the sieve body, a driving main shaft, the driving main shaft being an eccentric shaft and being rotationally arranged on the base, a driving rocker arm, one end of the driving rocker arm being hinged to the driving main shaft and the other end being hinged to the sieve body through a driving hinge shaft, the driving rocker arm and the branch support arms being oppositely inclined, and a self-aligning roller bearing arranged between the driving rocker arm and the driving main shaft. Through the above technical solution, the technical problem that the driving assembly and the hinge shaft of the winnowing machine in the prior art have a probability of damage is solved. The self-aligning roller bearing can effectively reduce the amplitude of left and right swinging of the sieve body, thereby reducing damage caused by lateral force.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of coal preparation equipment technology, and more specifically, to a coal preparation air separator that can reduce the failure rate. Background Technology

[0002] Air classifiers are commonly used dry separation equipment in coal preparation. They mainly separate coal and gangue of different densities through the combined action of air force and the gravity and inertia of the material. Compared with water washing coal preparation, air classifiers do not require water and have advantages such as simple process flow, low investment cost and no coal slurry water pollution. They are widely used in water-scarce areas and coal preparation scenarios with high environmental protection requirements.

[0003] However, existing air classifiers have some problems in actual use. For example, during production, the screen body of the air classifier may sway laterally. After a certain period of time, this may damage the drive assembly and the large hinge shaft. The drive assembly is used to generate reciprocating vibration of the screen body, and the large hinge shaft is the hinge shaft connecting the swing arm and the bottom of the screen body. Damage to the drive assembly and the large hinge shaft can be resolved by replacing them, but the problem will recur after a period of use. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an air classifier, which solves the technical problem that the drive assembly and hinge shaft of the air classifier in the prior art are prone to damage.

[0005] According to one aspect, at least one embodiment of this disclosure provides an air classifier, comprising: A base and a sieve body, wherein the sieve body is located above the base; The sub-support arms are of several types, with one end hinged to the base and the other end hinged to the screen body; A drive spindle, which is an eccentric shaft and is rotatably mounted on the base; A drive rocker arm, one end of which is hinged to the drive spindle and the other end of which is hinged to the screen body via a drive hinge shaft. The drive rocker arm and the sub-support arm are both inclined in opposite directions. A self-aligning roller bearing is disposed between the drive rocker arm and the drive spindle.

[0006] For example, at least one embodiment of this disclosure provides an air separator that further includes a driven shaft, which is connected to the drive shaft. The driven shaft is also an eccentric shaft and both the driven shaft and the drive shaft have eccentric blocks.

[0007] For example, at least one embodiment of the present disclosure provides an air separator that further includes bearing retaining rings, which are disposed on the drive spindle and located on both sides of the self-aligning roller bearing.

[0008] For example, at least one embodiment of this disclosure provides an air separator in which the cross-section of the bearing retaining ring is L-shaped.

[0009] For example, at least one embodiment of this disclosure provides an air separator in which an adhesive layer is provided between the drive hinge shaft and the drive rocker arm.

[0010] For example, at least one embodiment of this disclosure provides an air separator that further includes: A column, wherein the column is disposed on one side of the base; A ranging element is disposed on the column and faces one side of the screen body.

[0011] For example, at least one embodiment of this disclosure provides an air separator, wherein one side of the screen body has a first pushing inclined surface and the other side has a first pushed inclined surface, and further includes: A first pusher member slides up and down on the base, with a second pushed inclined surface at one end and a second pushing inclined surface at the other end. There is a gap between the first pushing inclined surface and the second pushed inclined surface, and the pusher member is used to push the second pushed inclined surface when they come into contact, so that the first pusher member moves. The second pusher slides horizontally on the base, with a third pushed inclined surface at one end and a third pushing inclined surface at the other end. The second pushing inclined surface abuts against the third pushed inclined surface and is used to push the third pushed inclined surface, causing the second pusher to move. The third pushing inclined surface is spaced from the first pushed inclined surface and is used to push the first pushed inclined surface, causing the screen body to move away from the first pusher.

[0012] For example, at least one embodiment of this disclosure provides an air separator, wherein the first pusher is a long rod type and the second pusher is an L-shaped type.

[0013] For example, at least one embodiment of this disclosure provides an air separator, wherein the screen body has a perforation, the first pushed inclined surface is located on one side of the perforation, and one end of the second pusher penetrates through the perforation.

[0014] For example, at least one embodiment of this disclosure provides an air separator, wherein one side of the screen body has a first pushing part and the other side has a fourth pushed inclined surface, and further includes: A swing lever is oscillatingly disposed on one side of the screen body. One end has a first pushed part, and the other end has a second pushing part. The first pushing part is used to push the first pushed part, so that the swing lever oscillates. The third pusher slides horizontally on the base, with a second pushed portion at one end and a fourth pushing inclined surface at the other end. The second pushed portion is used to be pushed by the second pusher to move the third pusher. There is a gap between the fourth pushing inclined surface and the fourth pushed inclined surface, and the third pusher is used to push the fourth pushed inclined surface to move the screen body away from the swing lever.

[0015] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, multiple support arms are provided, one end of which is hinged to the base and the other end to the screen body, providing a stable support structure for the screen body. The drive shaft is rotatably mounted on the base as an eccentric shaft and is hinged to the screen body via a drive rocker arm. The rotation of the eccentric shaft drives the screen body to swing up and down, achieving air separation of materials. Self-aligning roller bearings are installed between the drive rocker arm and the drive shaft. Due to their self-aligning properties, while allowing the screen body to swing up and down, they can effectively reduce the amplitude of the screen body's lateral swing, thereby reducing damage to the drive shaft, drive rocker arm, and self-aligning roller bearings caused by lateral forces, and improving the stability and service life of the air separator. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an air separator in one embodiment of the present disclosure; Figure 2 for Figure 1 A schematic diagram of the structure of the drive spindle, driven shaft, and self-aligning roller bearing in the embodiment; Figure 3 for Figure 1 A schematic diagram of the structure of the first and second pushers in the embodiment; Figure 4 This is a schematic diagram of the structure of the swing lever and the third pusher in yet another embodiment of this disclosure; In the diagram: Base - 100, Screen body - 200, First pushing inclined surface - 201, First pushed inclined surface - 202, Perforation - 203, First pushing part - 204, Fourth pushed inclined surface - 205, Perforation - 206, Support arm - 300, Drive spindle - 400, Eccentric block - 401, Drive rocker arm - 500, Drive hinge shaft - 501, Glue layer - 5011, Self-aligning roller bearing - 600, Bearing retaining ring - 601, Driven shaft - 700, Column - 800, Distance measuring component - 900, First pushing component - 1000, Second pushed inclined surface - 1001, Second pushing inclined surface - 1002, Second pushing component - 1100, Third pushed inclined surface - 1101, Third pushing inclined surface - 1102, Swing lever - 1200, First pushed part - 1201, Second pushing part - 1202, Third pushing member - 1300, Second pushed part - 1301, Fourth pushing ramp - 1302. Detailed Implementation The present disclosure 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 disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly 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.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-2 As shown, this is an embodiment of an air classifier according to the present disclosure. Multiple support arms 300 are provided, one end hinged to the base 100 and the other end hinged to the screen body 200, providing a stable support structure for the screen body 200. A drive shaft 400 is rotatably mounted on the base 100 as an eccentric shaft. It is hinged to the screen body 200 via a drive rocker arm 500. The rotation of the eccentric shaft causes the screen body 200 to swing up and down, achieving air classification of materials. A self-aligning roller bearing 600 is disposed between the drive rocker arm 500 and the drive shaft 400. Due to its self-aligning performance, while allowing the screen body 200 to swing up and down, it effectively reduces the amplitude of the screen body 200's left and right swing, thereby reducing damage to the drive shaft 400, drive rocker arm 500, and self-aligning roller bearing 600 themselves caused by lateral forces, improving the stability and service life of the air classifier.

[0024] The base 100 has a rectangular frame structure with internal reinforcing ribs to enhance its structural rigidity. The layout of the reinforcing ribs is designed according to the stress distribution of the base 100. In areas where stress concentration may occur, such as below the installation position of the drive spindle 400 and near the hinge point of the branch support arm 300, the reinforcing ribs are arranged more densely.

[0025] The screen body 200 consists of a screen frame and a screen mesh. The bottom of the screen body 200 is provided with multiple hinge points for hinge connection with the sub-support arm 300 and the drive rocker arm 500.

[0026] Both ends of the drive spindle 400 are mounted in bearing seats on the base 100. The bearing seats are made of cast steel and are fixed to the base 100 with bolts. An eccentric wheel is provided in the middle of the drive spindle 400. The drive spindle 400 is driven to rotate by a motor through a belt or chain drive.

[0027] One end of the drive rocker arm 500 is hinged to the drive spindle 400 via a self-aligning roller bearing 600, and the other end is hinged to the hinge point at the bottom of the screen body 200 via a drive hinge shaft 501.

[0028] By rationally designing the structure with opposite tilt directions for the support arm 300 and the drive rocker arm 500, and by using the self-aligning roller bearing 600, the lateral sway amplitude of the screen body 200 is effectively reduced. The reduced lateral sway amplitude of the screen body 200 improves the stability of the air separator operation and reduces the risk of damage to the drive shaft 400, drive rocker arm 500, and self-aligning roller bearing 600 caused by lateral sway.

[0029] Due to the reduced lateral oscillation of the screen body 200, the abnormal stress on the drive spindle 400, drive rocker arm 500, and self-aligning roller bearing 600 is reduced, significantly extending the service life of the equipment. The extended replacement cycle of the drive assembly, drive rocker arm 500, and large hinge shaft (i.e., drive spindle 400) reduces equipment maintenance costs and downtime, thereby improving production efficiency.

[0030] The stable 200-degree oscillation of the screen body ensures a more regular movement trajectory of the material on the screen surface, which is conducive to improving the separation accuracy of coal and gangue, and enhancing the separation effect and product quality of the air separator.

[0031] In some examples, such as Figures 1-2 As shown, a driven shaft 700 is designed and connected to the drive shaft 400, both being eccentric shafts with eccentric blocks to optimize the oscillation effect of the screen body 200. The drive shaft 400 acts as the active shaft, driving the driven shaft 700 to rotate synchronously. During rotation, the eccentric blocks 401 on the two eccentric shafts work synergistically on the screen body 200, resulting in a more stable oscillation. This oscillation mode can more effectively disperse the force on the material on the screen surface, enhance the tumbling and jumping of the material, thereby improving the separation efficiency and accuracy of coal and gangue, while further reducing the possibility of lateral oscillation of the screen body 200 and improving the overall performance of the air separator. The transmission connection between the drive shaft 400 and the driven shaft 700 adopts gear transmission, synchronous belt transmission, or chain transmission.

[0032] The double eccentric shaft structure makes the oscillation of the screen body 200 more stable and effective, allowing for more thorough tumbling and jumping of the material on the screen surface, and stronger interaction with the airflow. Compared to a single eccentric shaft structure air classifier, the sorting efficiency is improved, allowing more material to be processed in the same amount of time, thus increasing the production capacity of the air classifier.

[0033] Because the material moves more evenly and fully on the screen surface, coal and gangue can be separated more accurately. In actual production, the ash content of clean coal can be reduced, and the coal content of gangue can be further reduced, improving product quality and meeting the market demand for high-quality coal products.

[0034] The synergistic effect of the double eccentric shafts effectively balances the forces acting on the screen body 200, further suppressing its lateral sway. Compared to the single eccentric shaft structure, the lateral sway amplitude of the screen body 200 is reduced, decreasing the risk of damage to the drive spindle 400, drive rocker arm 500, self-aligning roller bearing 600, and other components caused by lateral sway, thus extending the service life of the equipment and reducing maintenance costs.

[0035] In some examples, such as Figure 2 As shown, bearing retaining rings 601 are installed on both sides of the self-aligning roller bearing 600 on the drive spindle 400. Their main purpose is to provide axial positioning and protection for the self-aligning roller bearing 600. During operation of the air classifier, the oscillation of the screen body 200 causes the drive spindle 400, drive rocker arm 500, and self-aligning roller bearing 600 to experience alternating loads, potentially causing axial displacement of the self-aligning roller bearing 600. The bearing retaining rings 601 prevent axial movement of the self-aligning roller bearing 600 on the drive spindle 400, ensuring that the self-aligning roller bearing 600 is always in the correct position and maintaining the stability of the screen body 200's oscillation. Furthermore, the bearing retaining rings 601 also prevent impurities and dust from entering the self-aligning roller bearing 600, reducing bearing wear, extending its service life, and thus ensuring the overall stable operation of the air classifier.

[0036] In some examples, such as Figure 2 As shown, an L-shaped bearing retaining ring 601 is used to further optimize the protection and positioning functions of the self-aligning roller bearing 600. The L-shaped structure design allows it to more effectively prevent impurities from entering the bearing while achieving axial positioning of the self-aligning roller bearing 600. Its portion perpendicular to the drive shaft 400 prevents axial movement of the bearing, ensuring stable operation of the self-aligning roller bearing 600 and maintaining the stability of the screen body 200's oscillation. Its horizontally extended portion acts like a protective wing, better shielding dust, coal dust, and other impurities during the operation of the air classifier, preventing them from approaching and entering the self-aligning roller bearing 600, thereby reducing bearing wear, extending its service life, and ensuring the efficient and stable operation of the air classifier.

[0037] In some examples, a potting layer 5011 is provided between the drive hinge shaft 501 and the drive rocker arm 500 to enhance the connection stability between these two components. During operation of the air classifier, the drive rocker arm 500, driven by the drive spindle 400, transmits motion to the screen body 200 through the drive hinge shaft 501. During this process, the drive hinge shaft 501 and the drive rocker arm 500 bear significant alternating loads. The potting layer 5011 fills the tiny gaps between them, disperses stress, and reduces wear caused by relative fretting, thereby extending the service life of the components and ensuring stable operation of the air classifier.

[0038] In some examples, such as Figure 3 As shown, columns 800 are added to the left and right sides of the base 100 of the air classifier, and distance measuring devices 900 facing the screen body 200 are installed on the columns 800 to monitor the left and right swing of the screen body 200 in real time. Since left and right swing of the screen body 200 is undesirable, while forward and backward swing is necessary, it is necessary to monitor the amplitude of the left and right swing of the screen body 200 on both sides. During operation, the swing of the screen body 200 directly affects the stability of the equipment. By measuring the distance change between the distance measuring device 900 and the screen body 200, the amplitude of the left and right swing of the screen body 200 can be obtained. This data helps operators to promptly detect abnormal swing of the screen body 200, such as excessive lateral swing, so that appropriate measures can be taken to adjust it, ensuring that the air classifier always operates under optimal conditions, improving sorting efficiency and product quality, and preventing damage to equipment components due to abnormal swing of the screen body 200.

[0039] The bottom of the column 800 is fixed to the base 100 by welding or bolting. The top of the column 800 is provided with a mounting platform or mounting hole for mounting the distance measuring element 900. The mounting platform should be level to ensure that the distance measuring element 900 can accurately measure the distance to the screen body 200.

[0040] The 900 rangefinder can be equipped with a laser rangefinder, ultrasonic rangefinder, or infrared rangefinder, depending on the working environment and measurement accuracy requirements of the wind classifier. If the working environment is dusty, an ultrasonic rangefinder is more advantageous, as it utilizes the propagation characteristics of ultrasound in air to measure distance and has low sensitivity to dust. If high measurement accuracy is required and the working environment is relatively clean, a laser rangefinder is a better choice. Infrared rangefinders are suitable for applications where accuracy requirements are not particularly high and cost control is strict.

[0041] After the air classifier starts, the distance measuring device 900 measures the distance between itself and the screen body 200 in real time and transmits the data to the air classifier's control system. The control system analyzes the measurement data according to preset standard values ​​and monitors the lateral swing amplitude of the screen body 200 in real time. If the swing amplitude of the screen body 200 exceeds the preset range, the control system immediately issues an alarm signal to alert the operator. For example, if the swing amplitude of the screen body 200 is too large, it may cause excessive stress on the equipment components, easily leading to damage. The operator can adjust the operating parameters of the air classifier based on the alarm information and the actual situation, such as adjusting the rotation speed of the drive shaft 400, the wind speed and air volume of the air system, etc., to restore the swing of the screen body 200 to the normal range.

[0042] By monitoring the left-right oscillation amplitude of the screen body 200 in real time, operators can adjust the operating parameters of the air separator in a timely manner, ensuring that the screen body 200 is always in the optimal oscillation state, thereby improving material sorting efficiency and product quality. The oscillation stability of the screen body 200 is significantly improved, reducing the problem of uneven material sorting caused by abnormal oscillation.

[0043] Long-term analysis of the oscillation data of the screen body 200 can identify potential faults in the screen body 200 in advance, such as component wear and loose connections, allowing for timely maintenance and preventing sudden equipment failures. The fault early warning function reduces equipment downtime, improves equipment reliability and production efficiency, and lowers maintenance costs.

[0044] In some examples, such as Figure 3 As shown, through the cooperation of the first pusher 1000, the second pusher 1100, and the inclined surface of the screen body 200, the horizontal swaying of the screen body 200 can be stably restricted according to actual needs. This avoids excessive swaying of the screen body 200, thereby reducing damage to the drive shaft 400, drive rocker arm 500, and self-aligning roller bearing 600 caused by lateral forces, improving the stability and service life of the air classifier, reducing excessive wear of equipment components caused by undesirable horizontal swaying of the screen body 200, and enhancing the overall performance and stability of the air classifier.

[0045] The first pushing inclined surface 201 and the first pushed inclined surface 202 are formed directly on both sides of the screen body 200 by mechanical processing.

[0046] The first pushing member 1000 is elongated. The second pushed inclined surface 1001 and the second pushing inclined surface 1002 are machined at both ends of the first pushing member 1000, and their inclination angles are consistent with the angles of the corresponding inclined surfaces on the screen body 200. To facilitate the lifting and sliding of the first pushing member 1000, guide sliders are provided on both sides to ensure the smoothness of the sliding.

[0047] The second pusher 1100 is a long strip with a bend. The third pushed inclined surface 1101 and the third pushing inclined surface 1102 are machined at both ends of the second pusher 1100. In order to realize the horizontal sliding of the second pusher 1100 on the base 100, a linear guide slider is installed at its bottom to ensure the straightness and stability of the sliding of the second pusher 1100.

[0048] During the screening process, if the screen body 200 experiences undesirable left-right swaying, such as excessive rightward swaying, the first pushing inclined surface 201 may touch the second pushed inclined surface 1001 of the first pushing member 1000, causing the first pushing member 1000 to slide downwards. After the first pushing member 1000 slides downwards, the second pushing inclined surface 1002 of the first pushing member 1000 will push the third pushed inclined surface 1101 of the second pushing member 1100, causing the second pushing member 1100 to slide to the left. After the second pushing member 1100 slides to the left, the third pushing inclined surface 1102 of the second pushing member 1100 will push the first pushed inclined surface 202 of the screen body 200, thereby causing the screen body 200 to slide to the left. This counteracts the excessive rightward swaying of the screen body 200, achieving a return to center and pushing the screen body 200 to the appropriate position. Through this process, the left-right swaying of the screen body 200 is effectively corrected.

[0049] By adjusting the position of the screen body 200, the movement trajectory of the material on the screen body 200 is made more reasonable, and it works better in coordination with the wind force and the oscillation of the screen body.

[0050] The screen body 200 position can be quickly adjusted according to the characteristics of different materials, making the air classifier suitable for sorting various types of materials. Whether processing materials with large differences in particle size, density, or moisture content, the position of the screen body 200 can be optimized by adjusting the pushing component. This improves the equipment's adaptability to different materials and expands the application range of the air classifier.

[0051] By properly adjusting the position of the screen body 200, excessive local stress on equipment components caused by improper positioning of the screen body 200 is avoided, reducing wear on components such as the drive shaft 400, drive rocker arm 500, and branch support arm 300. Compared with traditional air classifiers, the service life of key components is extended, reducing equipment maintenance costs and downtime, and improving production efficiency.

[0052] In some examples, such as Figure 3As shown, the first pusher 1000 is designed as a long rod, and the second pusher 1100 is designed as an L-shape, further optimizing the structure for adjusting the position and controlling the oscillation of the screen body 200 in the air classifier. During the lifting and sliding process, the long rod-shaped first pusher 1000, due to its longer structure, can more flexibly transmit the force from the screen body 200 within a limited space and has good guiding properties, ensuring smooth lifting and lowering movements. The L-shaped second pusher 1100, with its unique shape, can better cooperate with the first pusher 1000 and the screen body 200 during horizontal sliding, achieving effective force conversion and transmission, thereby more stably adjusting the position of the screen body 200, enhancing the control effect on the oscillation of the screen body 200, and further improving the overall performance of the air classifier.

[0053] In some examples, such as Figure 3 As shown, a perforation 203 is provided on one side of the screen body 200, and one end of the second pushing member 1100 passes through the perforation. The first pushed inclined surface 202 is located on one side of the perforation 203, thereby optimizing the position adjustment and swing control mechanism of the screen body 200. The perforation 203 provides a through path for the second pushing member 1100, avoiding interference. The first pushed inclined surface 202 cooperates with the end of the second pushing member 1100 that passes through the perforation 203, effectively converting the thrust of the second pushing member 1100 into the displacement of the screen body 200, realizing the adjustment of the position of the screen body 200, and improving the stability and sorting effect of the air classifier in the material sorting process.

[0054] In some examples, such as Figure 4 As shown, a first pushing part 204 and a fourth pushed inclined surface 205 are provided, along with a swing lever 1200 and a third pushing member 1300, to achieve flexible adjustment of the position of the screen body 200. When the screen body 200 shifts left or right during the sorting process or needs to be adjusted according to the material characteristics, the first pushing part 204 pushes the swing lever 1200, which in turn drives the third pushing member 1300, ultimately moving the screen body 200 to a suitable position. This optimizes the movement trajectory of the material on the screen body 200, improves the sorting effect, reduces wear on equipment components caused by improper positioning of the screen body 200, and enhances the overall performance of the air classifier.

[0055] The swing lever 1200 is oscillatingly mounted on one side of the screen body 200 via a pin or bearing. One end has a first pushed part 1201 and the other end has a second pushing part 1202. The first pushing part 204 is used to push the first pushed part 1201, causing the swing lever 1200 to swing. The third pusher 1300 is pushed by the swing lever 1200, and the second pushed part 1301 and the fourth push inclined surface 1302 are located at the two ends of the third pusher 1300, respectively.

[0056] During the operation of the air separator, if the screen body 200 swings left and right, shifting towards the swing lever 1200, the first pushing part 204 pushes the first pushed part 1201, causing the swing lever 1200 to swing. The second pushing part 1202 pushes the second pushed part 1301, the third pushing part 1300 slides laterally along a straight line, and the fourth pushing inclined surface 1302 pushes the fourth pushed inclined surface 205, causing the screen body 200 to move away from the swing lever 1200, thus adjusting the position of the screen body 200. This process effectively corrects the left and right swing of the screen body 200.

[0057] By adjusting the position of the screen body 200, the movement trajectory of the material on the screen body 200 is made more reasonable, and it works better in coordination with the wind force and the screen body oscillation. Adjusting the position of the screen body 200 avoids excessive local stress on equipment components caused by improper positioning of the screen body 200, reducing wear on components such as the drive main shaft 400, drive rocker arm 500, and branch support arm 300. Compared with traditional air classifiers, the service life of key components is extended, reducing equipment maintenance costs and downtime, and improving production efficiency.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An air separator, characterized in that, include: A base (100) and a sieve body (200), the sieve body (200) being located above the base (100); The sub-support arms (300) are a plurality of each, one end of which is hinged to the base (100) and the other end of which is hinged to the screen body (200). A drive spindle (400) is an eccentric shaft and is rotatably mounted on the base (100); A drive rocker arm (500) is provided, one end of which is hinged to the drive spindle (400), and the other end is hinged to the screen body (200) via a drive hinge shaft (501). The drive rocker arm (500) and the sub-support arm (300) are both inclined in opposite directions. There is an adhesive layer (5011) between the drive hinge shaft (501) and the drive rocker arm (500). A self-aligning roller bearing (600) is disposed between the drive rocker arm (500) and the drive spindle (400).

2. The air separator according to claim 1, characterized in that, It also includes a driven shaft (700), which is connected to the drive shaft (400) in a transmission manner. The driven shaft (700) is also an eccentric shaft, and both the driven shaft (700) and the drive shaft (400) have eccentric blocks (401).

3. The air separator according to claim 1, characterized in that, It also includes a bearing retainer ring (601), which is disposed on the drive spindle (400) and located on both sides of the self-aligning roller bearing (600).

4. The air separator according to claim 3, characterized in that, The bearing retaining ring (601) has an L-shaped cross section.

5. The air separator according to claim 1, characterized in that, Also includes: A column (800) is disposed on one side of the base (100); A ranging element (900) is disposed on the column (800) and faces the side of the sieve body (200).

6. The air separator according to claim 1, characterized in that, The sieve body (200) has a first pushing inclined surface (201) on one side and a first pushed inclined surface (202) on the other side, and further includes: A first pusher (1000) slides up and down on the base (100), with a second pushed inclined surface (1001) at one end and a second pushing inclined surface (1002) at the other end. There is a gap between the first pushing inclined surface (201) and the second pushed inclined surface (1001), and the first pusher (1000) is used to push the second pushed inclined surface (1001) when they come into contact, so that the first pusher (1000) moves. The second pusher (1100) slides horizontally on the base (100), with a third pushed inclined surface (1101) at one end and a third pushing inclined surface (1102) at the other end. The second pushing inclined surface (1102) abuts against the third pushed inclined surface (1101) and is used to push the third pushed inclined surface (1101) so that the second pusher (1100) moves. The third pushing inclined surface (1102) has a gap with the first pushed inclined surface (202) and is used to push the first pushed inclined surface (202) so that the screen body (200) moves away from the first pusher (1000).

7. The air separator according to claim 6, characterized in that, The first pusher (1000) is a long rod type, and the second pusher (1100) is an L-shaped type.

8. The air separator according to claim 6, characterized in that, The sieve body (200) has a perforation (203), the first pushed inclined surface (202) is located on one side of the perforation (203), and one end of the second pusher (1100) passes through the perforation (203).

9. A wind separator according to claim 1, characterized in that, The sieve body (200) has a first pushing part (204) on one side and a fourth pushed inclined surface (205) on the other side, and also includes: A swing lever (1200) is oscillatingly disposed on one side of the screen body (200), with a first pushed part (1201) at one end and a second pushing part (1202) at the other end. The first pushing part (204) is used to push the first pushed part (1201) so that the swing lever (1200) swings. The third pusher (1300) slides horizontally on the base (100), with a second pushed part (1301) at one end and a fourth pushing inclined surface (1302) at the other end. The second pushed part (1301) is pushed by the second pusher (1202) to move the third pusher (1300). The fourth pushing inclined surface (1302) is spaced from the fourth pushed inclined surface (205) and is used to push the fourth pushed inclined surface (205) to move the screen body (200) away from the swing lever (1200).

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