Tobacco shred winnowing machine feeding device and method capable of improving wind separation efficiency

Abstract

The feeding device comprises an incoming material pretreatment unit, a winnowing feeding unit and a support, the winnowing feeding unit and the support are fixedly arranged on a side plate of a conveying component of the cut tobacco winnowing machine, the incoming material pretreatment unit is fixedly arranged on the support, and the winnowing feeding unit is fixedly arranged on the support. The winnowing feeding unit is communicated with a middle box body of the cut tobacco winnowing machine; the supplied material pretreatment unit comprises a conveying groove, a high-frequency vibration motor, a supporting spring, a screening strip and a discharging hopper. The winnowing feeding unit comprises a winnowing feeding unit box body, a high-speed conveying belt, a first partition plate, a closed material throwing device, a second partition plate, a compressed air plate cavity and a compressed air plate. According to the tobacco shred winnowing machine, materials with small shapes and sizes are separated from most stems mixed in the materials through the difference of suspension speeds, the stems fall off and leave a production line through an impurity outlet hopper component of the tobacco shred winnowing machine, and tobacco shred moves upwards along with airflow and enters a middle box of the tobacco shred winnowing machine through a channel between a first partition plate and the lower portion of a high-speed conveying belt.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco processing and production, and in particular relates to a feeding device and method for a leaf shred air separator capable of improving air separation efficiency. Background Art

[0002] The air separation and impurity removal process is an important process in the tobacco processing and production process. The main purpose is to control the content of shredded tobacco in the discarded stems and remove the stems produced by the cutting of tobacco veins. The high content of stems in the tobacco has a great influence on the unit weight of the rolled cigarettes and the uniformity of the distribution of tobacco shreds and the density of the tobacco body in a single cigarette, which in turn has a great influence on the hardness, tar content, draw resistance, sensory quality, tobacco consumption and the operating efficiency of the cigarette machine equipment. It is also easy to cause cigarette paper puncture and burning cone turning on cigarettes, especially medium and thin cigarettes, resulting in quality defects; the qualified tobacco shreds contained in the discarded stems are discarded, which also affects the cost of cigarette raw materials.

[0003] At present, cigarette manufacturers mostly use leaf shred air separators as processing equipment after the leaf shred drying stage, and use the difference in suspension speed between tobacco shreds and stems to remove stems contained in tobacco shreds. Although the feed device of the leaf shred air separator is equipped with a high-speed conveyor belt for throwing and thinning, the entanglement and even clumping of some tobacco shreds affect the stability of the gas flow field and the setting of the gas flow rate in the air separation area of ​​the air separator. At the same time, the production line flow is large, and there is still overlap between tobacco shreds and stems. In addition, the diversity of tobacco shreds also causes some stems to be lifted and moved by the clumped tobacco shreds and cannot be separated, resulting in a certain probability in the air separation process. Increasing the amount of stem removal will cause tobacco to be discharged with the stems, increasing tobacco loss. Therefore, the leaf shred air separator can only remove a certain amount of stems, which can no longer meet the needs of higher-end products. To cope with this situation, the industry often uses leaf shred air classifiers as the basic equipment and sets up secondary air classifiers in parallel. On the basis of increasing the amount of stems removed by the leaf shred air classifier, the tobacco discharged with the stems are re-air-processed and recovered by air classification through the secondary air classification equipment. During the secondary air classification process, the material is loosened, relatively free, and has a relatively large air classification surface. A smaller material-to-air ratio and a lower suspension speed can be used for air classification, thereby achieving more than 5 times the amount of stems removed by the current leaf shred air classifier, and the processing effect is greatly improved. However, the production lines of some cigarette companies do not have the conditions to meet the space requirements for the layout of secondary air separation equipment, resulting in shortcomings in processing capacity; and under the condition of a certain rejection amount, the procurement investment and operating energy consumption costs of the secondary air separation equipment are relatively large; at the same time, according to the actual operation of the leaf shred air separator under the secondary air separation treatment process, it is found that when the air volume of the leaf shred air separator is reduced and the rejection amount of the leaf shred air separator is increased, since the amount of material entering the secondary air separation equipment for processing accounts for about 10%, the remaining material volume is still relatively large, and a small amount of stems will still pass through the air separation area of ​​the leaf shred air separator and enter the downstream equipment. In fact, there is still room for further improvement in the air separation efficiency of the leaf shred air separator. Summary of the invention

[0004] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a blade shred air separator feeding device and method which can improve the air separation efficiency. The present invention is highly integrated with the existing blade shred air separator, does not occupy additional space, is easy to implement, adopts mature technology, operates stably and requires little maintenance, greatly improves the operating efficiency and process quality assurance capability of the blade shred air separator equipment, and has strong popularization potential.

[0005] The technical solution adopted by the present invention is:

[0006] A feeding device for a leaf shred air separator capable of improving air separation efficiency, characterized in that it comprises an incoming material pretreatment unit (1), an air separation feeding unit (2) and a bracket (6), wherein the air separation feeding unit (2) and the bracket (6) are respectively fixed on a side plate (5) of a conveying component of the leaf shred air separator, the incoming material pretreatment unit (1) is fixed on the bracket (6), and the air separation feeding unit (2) is connected to a middle box (3) of the leaf shred air separator; wherein:

[0007] The incoming material pretreatment unit (1) comprises a transmission trough (1-1), a high-frequency vibration motor (1-2), a support spring (1-3), a screening bar (1-4) and a lower hopper (1-5); the high-frequency vibration motor (1-2) is arranged at the bottom of the transmission trough (1-1); the transmission trough (1-1) is tiltedly arranged on a bracket (6) through a support spring (1-3); the upper end of the support spring (1-3) is installed at the bottom of the transmission trough (1-1), and the other end is installed at the bottom of the transmission trough (1-1). The top of the bracket (6); a plurality of screening bars (1-4) are arranged at intervals along the length direction of the transmission trough (1-1), that is, the material conveying direction; the high end of the transmission trough (1-1) is the feeding end, and the feeding end is connected to the upstream feeding vibration conveyor (7) of the leaf filament air separator; the low end of the transmission trough (1-1) is the discharging end, and the discharging end has a first discharging port and a second discharging port, and the first discharging port is connected to the lower hopper (1-5) for the falling of the material below the screening bars;

[0008] The air separation feeding unit (2) comprises an air separation feeding unit box (2-2), a high-speed conveying belt (2-4), a first partition (2-5), a closed ejector (2-6), a second partition (2-7), an air pressure plate cavity (2-9) and an air pressure plate (2-10); the air separation feeding unit box (2-2) is respectively provided with the high-speed conveying belt (2-4) and the closed ejector (2-6) as two feeding ends of the air separation feeding unit (2); the second discharge port extends into the air separation feeding unit box (2-2) and is connected with the high-speed conveying belt (2-4); the lower hopper (1-5) is connected with the closed ejector (2-6); the air pressure plate cavity (2-9) and the air pressure plate (2-10) are provided above the high-speed conveying belt (2-4); the air pressure plate (2-10) is provided below the side of the air pressure plate cavity (2-9); 10), used to adjust the amount of gas entering the leaf shred air separator through the air separation feeding unit (2-2); a first partition (2-5) and a second partition (2-7) are arranged below the high-speed conveyor belt (2-4), the lower ends of the first partition (2-5) and the second partition (2-7) are respectively fixed to the bottom of the inner cavity of the air separation feeding unit box (2-2), and the area between the first partition (2-5) and the second partition (2-7) forms an air flow channel, which is connected to the air flow channel of the leaf shred air separator outlet bucket component (4), and the difference in suspension speed is used to separate the small-sized materials from the majority of the stems mixed therein, and the stems fall through the leaf shred air separator outlet bucket component (4) to leave the production line, and the leaf shreds move upward with the air flow and enter the leaf shred air separator middle box through the channel between the first partition (2-5) and the bottom of the high-speed conveyor belt (2-4).

[0009] Furthermore, the cross-sectional dimensions of the channel between the first partition (2-5) and the bottom of the high-speed conveyor belt (2-4) and the air flow channel between the first partition (2-5) and the second partition (2-7) are different, so as to obtain different air flow velocities and realize differentiated air separation treatment of materials and stems of different shapes and sizes in the blade fibers.

[0010] Furthermore, the bracket (6) is connected to the side plate (5) of the conveying component of the leaf shred air separator via a bracket connecting plate (6-1).

[0011] Furthermore, the air separation feed unit (2) is fixed to the side plate (5) of the conveying component of the blade shred air separation machine via the air separation feed unit flange (2-1), and is connected to the middle box (3) of the blade shred air separation machine via the middle box flange (3-1).

[0012] Furthermore, the high-speed conveyor belt (2-4) and the closed thrower (2-6) correspond to different air flow speeds and air separation methods.

[0013] Furthermore, the high-speed conveyor belt (2-4) and the closed ejector (2-6) can be adjusted according to the state change of the material.

[0014] Furthermore, the high-speed conveyor belt (2-4) and the enclosed thrower (2-6) are respectively connected to the first drive motor (2-3) and the second drive motor (2-8) to change the state of the material after throwing and assist in adjusting the air separation effect.

[0015] A method for feeding a blade filament air separator to improve air separation efficiency, characterized in that the method specifically comprises the following steps:

[0016] S1. The incoming material pretreatment unit connects and delivers the materials delivered by the upstream feeding vibration conveyor of the leaf shred air separator, and screens and separates the materials and stems through the screening bars according to the different shapes and sizes of the materials and stems during the transportation process, and loosens the materials to a certain extent;

[0017] S2. After screening and separation, the materials with larger shapes and sizes and a small number of stems located above the screening bar enter the high-speed conveyor belt of the air separation feeding unit through the first outlet of the incoming material pretreatment unit. The materials with larger shapes and sizes are separated from the small number of stems mixed therein by the inertia of the materials after leaving the high-speed conveyor belt and the air flow velocity in the separation position area. The stems fall through the impurity bucket component of the leaf shred air separator and leave the production line. The leaf shreds enter the box of the leaf shred air separator and settle on the belt of the conveying component of the leaf shred air separator and are transported to the discharge device of the leaf shred air separator and enter the downstream equipment.

[0018] S3, after screening and separation, the small-sized materials below the screening bar are fully thrown into the air flow channel of the air separation feeding unit through the lower hopper and the closed thrower of the air separation feeding unit, and connected to the air flow channel of the impurity bucket component of the leaf shred air separator. The difference in suspension speed is used to separate the small-sized materials from most of the stems mixed therein. The stems fall through the impurity bucket component of the leaf shred air separator and leave the production line. The leaf shreds move upward with the air flow and enter the channel under the high-speed conveyor belt to settle and fall in the box of the leaf shred air separator and are collected with the leaf shreds after air separation in the above-mentioned process B, and then are conveyed by the belt of the conveying component of the leaf shred air separator to the discharge device of the leaf shred air separator and enter the downstream equipment;

[0019] S4. In the above steps S2 and S3, the oversized and larger materials can fall down and enter the impurity bucket of the current leaf shred air separator to be processed and separated by air separation according to the existing loosening and deagglomeration mode, thereby completing the entire feeding process of the leaf shred air separator with auxiliary air separation.

[0020] Furthermore, the high-speed conveyor belt (2-4) can realize the thin conveying of materials with large shapes and sizes and provide a throwing speed to obtain a certain air separation surface. The closed throwing device (2-6) can realize the rapid throwing of materials with small shapes and sizes, making the materials relatively free and dispersedly distributed, while avoiding the existence of horizontal airflow, which is conducive to ensuring the air separation efficiency.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Based on the existing leaf shred air separator, the present invention can complete the connection and transportation of the upstream incoming materials of the leaf shred air separator through the incoming material pretreatment unit and perform corresponding loosening, screening and separation treatments during the transportation process, and then the high-speed conveyor belts and closed throwers at different positions of the air separation feeding unit are used to send them to air separation areas in different states for air separation and impurity removal treatment.

[0023] 2. For materials with large size, the present invention separates the materials with large size from a small amount of stems mixed therein by coordinating inertia and air flow velocity. For materials with small size, the materials with small size are separated from most of the stems mixed therein by utilizing the difference in suspension velocity after being fully scattered.

[0024] 3. The present invention can greatly reduce the impact of materials with large shapes and sizes on the air separation efficiency, and can perform differentiated air separation treatments on materials and stems of different shapes and sizes in the shredded tobacco. It also realizes the diversion treatment of upstream incoming materials and reduces the material-to-air ratio in the air separation process, thereby effectively improving the air separation efficiency of the shredded tobacco air separator. At the same time, it can stably control the shredded content in the removed stems to reduce the waste of raw material costs caused by the discarding of shredded tobacco with the stems. It can also avoid the purchase and operating costs brought by the reuse of equipment and the occupation of production line space under the demand for a certain amount of air separation removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0026] Figure markings: 1. Incoming material pretreatment unit, 1-1. Transmission trough, 1-2. High-frequency vibration motor, 1-3. Support spring, 1-4. Screening bar, 1-5. Lower hopper, 2. Air separation feeding unit, 2-1. Air separation feeding unit flange, 2-2. Air separation feeding unit box, 2-3. First drive motor, 2-4. High-speed conveyor belt, 2-5. First partition, 2-6. Closed thrower, 2-7. Second partition, 2-8. Second drive motor, 2-9. Air pressure plate cavity, 2-10. Air pressure plate, 3. Leaf shred air separator middle box, 3-1. Middle box flange, 4. Leaf shred air separator outlet bucket component, 5. Leaf shred air separator conveying component side plate, 5-1. Leaf shred air separator conveying component belt, 6. Bracket, 6-1. Bracket connecting plate, 7. Leaf shred air separator upstream feeding vibration conveyor. DETAILED DESCRIPTION

[0027] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0030] Example 1

[0031] refer to Figure 1 The present invention provides a feeding device for a leaf shred air separator capable of improving air separation efficiency, comprising a material pretreatment unit 1, an air separation feeding unit 2 and a bracket 6, wherein the air separation feeding unit 2 and the bracket 6 are respectively fixed on a side plate 5 of a conveying component of the leaf shred air separator, the material pretreatment unit 1 is fixed on the bracket 6, and the air separation feeding unit 2 is connected to a middle box 3 of the leaf shred air separator; wherein:

[0032] The incoming material pretreatment unit 1 includes a transmission trough 1-1, a high-frequency vibration motor 1-2, a support spring 1-3, a screening bar 1-4 and a lower hopper 1-5, wherein the high-frequency vibration motor 1-2 is arranged at the bottom of the transmission trough 1-1, and the transmission trough 1-1 is tiltedly arranged on the bracket 6 through the support spring 1-3; the upper end of the support spring 1-3 is installed at the bottom of the transmission trough 1-1, and the other end is installed at the top of the bracket 6; a plurality of screening bars 1-4 are arranged at intervals along the length direction of the transmission trough 1-1, that is, the material conveying direction; the high end of the transmission trough 1-1 is the feed end, and the feed end is connected to the upstream feeding vibration conveyor 7 of the leaf filament air separator; the low end of the transmission trough 1-1 is the discharge end, and the discharge end has a first discharge port and a second discharge port, and the first discharge port is connected to the lower hopper 1-5 for the falling of the material below the screening bar;

[0033] The air separation feeding unit 2 includes an air separation feeding unit box 2-2, a high-speed conveying belt 2-4, a first partition 2-5, a closed ejector 2-6, a second partition 2-7, an air pressure plate cavity 2-9 and an air pressure plate 2-10; the air separation feeding unit box 2-2 is respectively provided with the high-speed conveying belt 2-4 and the closed ejector 2-6, as two feeding ends of the air separation feeding unit 2, the second discharge port extends into the air separation feeding unit box 2-2 and is connected with the high-speed conveying belt 2-4, and the lower hopper 1-5 is connected with the closed ejector 2-6; an air pressure plate cavity 2-9 and an air pressure plate 2-10 are arranged above the high-speed conveying belt 2-4, and an air pressure plate 2-10 is arranged below the side of the air pressure plate cavity 2-9 to adjust the leaf shred air separation machine through the air separation feeding unit 2-2 The amount of gas entering at the place ensures the air flow velocity in the regional channel between the first partition 2-5 and the second partition 2-7; the first partition 2-5 and the second partition 2-7 are arranged below the high-speed conveyor belt 2-4, and the lower ends of the first partition 2-5 and the second partition 2-7 are respectively fixed at the bottom of the inner cavity of the air separation feeding unit box 2-2, and the area between the first partition 2-5 and the second partition 2-7 forms an air flow channel, which is connected with the air flow channel of the blade shred air separator outlet bucket component 4, and the difference in suspension speed is used to separate the materials with small shape and size from most of the stems mixed therein. The stems fall through the blade shred air separator outlet bucket component 4 and leave the production line, and the blades move upward with the air flow and enter the blade shred air separator middle box through the channel between the first partition 2-5 and the bottom of the high-speed conveyor belt 2-4.

[0034] Specifically, the cross-sectional dimensions of the channel between the first partition 2-5 and the bottom of the high-speed conveyor belt 2-4 and the airflow channel between the first partition 2-5 and the second partition 2-7 are different to obtain different airflow velocities and realize differentiated air separation treatment of materials and stems of different shapes and sizes in the blade fibers.

[0035] Specifically, the bracket 6 is connected to the side plate 5 of the blade shred air separator conveying component through the bracket connecting plate 6-1.

[0036] Specifically, the air separation feeding unit 2 is fixed to the side plate 5 of the conveying component of the blade shred air separation machine through the air separation feeding unit flange 2-1, and is connected to the middle box 3 of the blade shred air separation machine through the middle box flange 3-1.

[0037] Specifically, the high-speed conveyor belt 2-4 and the closed thrower 2-6 correspond to different air flow speeds and air separation methods.

[0038] Specifically, the high-speed conveyor belt 2-4 and the closed ejector 2-6 can adjust the state change of the material.

[0039] Example 2

[0040] A method for feeding a blade filament air separator for improving air separation efficiency of the present invention specifically comprises the following steps:

[0041] S1. The incoming material pretreatment unit 1 is connected to the material delivered by the upstream feeding vibration conveyor 7 of the leaf shred air separator, and during the conveying process, the material and the stems are screened and separated through the screening bars 1-4 according to the different shapes and sizes, and the material is loosened to a certain extent.

[0042] S2. After screening and separation, the larger-sized materials and a small number of stalks located above the screening bars 1-4 enter the high-speed conveyor belt 2-4 of the air separation feeding unit 2 through the outlet of the transmission trough 2. The larger-sized materials and the small number of stalks mixed therein are separated by the inertia of the materials after they leave the high-speed conveyor belt 2-4 and the air flow velocity in the channel between the first partition 2-5 and the bottom of the high-speed conveyor belt 2-4. The stalks fall down through the impurity bucket component 4 of the leaf shred air separator and leave the production line. The leaf shreds enter the box 3 of the leaf shred air separator, settle and fall onto the belt 5-1 of the conveying component of the leaf shred air separator and are transported to the discharging device of the leaf shred air separator and enter the downstream equipment.

[0043] S3. After screening and separation, the small-sized materials below the screening bars 1-4 are fully thrown into the air flow channel between the first partition 2-5 and the second partition 2-7 through the lower hopper 1-5 and the closed thrower 2-6 of the air separation feeding unit 2, and connected to the air flow channel of the leaf shred air separator outlet bucket component 4. The difference in suspension speed is used to separate the small-sized materials from most of the stems mixed therein. The stems fall through the leaf shred air separator outlet bucket component 4 and leave the production line. The leaf shreds move upward with the air flow and enter the leaf shred air separator box 3 through the channel between the first partition 2-5 and the bottom of the high-speed conveyor belt 2-4 to settle and fall. They are combined with the leaf shreds after air separation in the above-mentioned S2 process, and then transported to the discharge device of the leaf shred air separator by the belt 5-1 of the leaf shred air separator conveying component to enter the downstream equipment.

[0044] S4. In the above S2 and S3 processes, the oversized and larger materials can fall down and enter the impurity bucket part 4 of the current leaf shred air separator to be processed and separated by air separation according to the existing loosening and deagglomeration mode, thereby completing the entire feeding process of the leaf shred air separator auxiliary air separation.

[0045] Specifically, the transmission trough 1-1 of the incoming material pretreatment unit 1 is provided with a plurality of groups of screening bars 4, and there is a height difference between each group, so that the material can be tumbled, and the strip structure can enter the interior of the material flow accumulation body during vibration to loosen it to a certain extent, thereby improving the screening efficiency to a certain extent while reducing the materials with larger shapes and sizes falling into the lower layer of the screening bars 4, which is beneficial to the subsequent air separation process to ensure the amount of stems and tobacco removed, and avoid the influence of the high air flow velocity caused by the large-sized materials on the air separation efficiency and tobacco loss.

[0046] Specifically, the transmission trough 1-1 of the incoming material pretreatment unit 1 provides high-frequency, low-amplitude vibration through the high-frequency vibration motor 1-2, which can contact the material multiple times and prolong the conveying and screening time of the material on the screening bar 4, which is conducive to loosening materials with large shapes and sizes, and is conducive to more free materials and stems with small shapes and sizes falling into the lower layer of the screening bar 4, thereby ensuring the amount of stems and stems removed in the subsequent air separation process, and avoiding the influence of high air flow velocity caused by materials with larger shapes and sizes on air separation efficiency and tobacco loss.

[0047] Specifically, the incoming material pretreatment unit 1 realizes flow decomposition processing of the material through the screening bars 4 under the action of the high-frequency vibration motor 1-2, reduces the material-gas ratio in the subsequent air separation process, and is conducive to ensuring the air separation efficiency.

[0048] Specifically, the high-speed conveyor belt 2-4 provided in the air separation feeding unit 2 can realize the thin conveying of materials with large shapes and sizes and provide a throwing speed to obtain a certain air separation surface. The closed throwing device 2-6 provided can realize the rapid throwing in of materials with small shapes and sizes, make the materials relatively free and dispersedly distributed, and avoid the existence of horizontal airflow at the same time, which is conducive to ensuring the air separation efficiency.

[0049] Specifically, the first drive motor 2-3 and the second drive motor 2-8 corresponding to the high-speed conveyor belt 2-4 and the closed thrower 2-6 can change the state of the material after throwing by adjusting the frequency parameters, and assist in adjusting the wind separation effect.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A feeding device for a blade filament air separator capable of improving air separation efficiency, characterized in that: The invention comprises a material pretreatment unit (1), a pneumatic feed unit (2) and a bracket (6), wherein the pneumatic feed unit (2) and the bracket (6) are respectively fixed on the side plate (5) of the conveying component of the leaf shred pneumatic separator, the material pretreatment unit (1) is fixed on the bracket (6), and the pneumatic feed unit (2) is connected to the middle box (3) of the leaf shred pneumatic separator; wherein: The incoming material pretreatment unit (1) comprises a transmission trough (1-1), a high-frequency vibration motor (1-2), a support spring (1-3), a screening bar (1-4) and a lower hopper (1-5); the high-frequency vibration motor (1-2) is arranged at the bottom of the transmission trough (1-1); the transmission trough (1-1) is tiltedly arranged on a bracket (6) through a support spring (1-3); the upper end of the support spring (1-3) is installed at the bottom of the transmission trough (1-1), and the other end is installed at the bottom of the transmission trough (1-1). The top of the bracket (6); a plurality of screening bars (1-4) are arranged at intervals along the length direction of the transmission trough (1-1), that is, the material conveying direction; the high end of the transmission trough (1-1) is the feeding end, and the feeding end is connected to the upstream feeding vibration conveyor (7) of the leaf filament air separator; the low end of the transmission trough (1-1) is the discharging end, and the discharging end has a first discharging port and a second discharging port, and the first discharging port is connected to the lower hopper (1-5) for the falling of the material below the screening bars; The air separation feeding unit (2) comprises an air separation feeding unit box (2-2), a high-speed conveying belt (2-4), a first partition (2-5), a closed ejector (2-6), a second partition (2-7), an air pressure plate cavity (2-9) and an air pressure plate (2-10); the air separation feeding unit box (2-2) is respectively provided with the high-speed conveying belt (2-4) and the closed ejector (2-6) as two feeding ends of the air separation feeding unit (2); the second discharge port extends into the air separation feeding unit box (2-2) and is connected with the high-speed conveying belt (2-4); the lower hopper (1-5) is connected with the closed ejector (2-6); the air pressure plate cavity (2-9) and the air pressure plate (2-10) are provided above the high-speed conveying belt (2-4); the air pressure plate (2-10) is provided below the side of the air pressure plate cavity (2-9); 10), used to adjust the amount of gas entering the leaf shred air separator through the air separation feeding unit (2-2); a first partition (2-5) and a second partition (2-7) are arranged below the high-speed conveyor belt (2-4), the lower ends of the first partition (2-5) and the second partition (2-7) are respectively fixed to the bottom of the inner cavity of the air separation feeding unit box (2-2), and the area between the first partition (2-5) and the second partition (2-7) forms an air flow channel, which is connected to the air flow channel of the leaf shred air separator outlet bucket component (4), and the difference in suspension speed is used to separate the small-sized materials from the majority of the stems mixed therein, and the stems fall through the leaf shred air separator outlet bucket component (4) to leave the production line, and the leaf shreds move upward with the air flow and enter the leaf shred air separator middle box through the channel between the first partition (2-5) and the bottom of the high-speed conveyor belt (2-4).

2. A feeding device for a blade filament air separator capable of improving air separation efficiency as claimed in claim 1, characterized in that: The cross-sectional dimensions of the channel between the first partition (2-5) and the lower portion of the high-speed conveyor belt (2-4) and the airflow channel between the first partition (2-5) and the second partition (2-7) are different, so as to obtain different airflow velocities and realize differentiated air separation processing of materials and stems of different shapes and sizes in the blade shreds.

3. A feeding device for a blade filament air separator capable of improving air separation efficiency as claimed in claim 1, characterized in that: The bracket (6) is connected to the side plate (5) of the conveying component of the leaf shred air separator via a bracket connecting plate (6-1).

4. A feeding device for a blade filament air separator capable of improving air separation efficiency as claimed in claim 1, characterized in that: The air separation feeding unit (2) is fixed to the side plate (5) of the conveying component of the blade shred air separation machine via the air separation feeding unit flange (2-1), and is connected to the middle box (3) of the blade shred air separation machine via the middle box flange (3-1).

5. A feeding device for a blade filament air separator capable of improving air separation efficiency as claimed in claim 1, characterized in that: The high-speed conveying belt (2-4) and the closed throwing device (2-6) correspond to different air flow speeds and air separation methods.

6. A feeding device for a blade filament air separator capable of improving air separation efficiency as claimed in claim 1, characterized in that: The high-speed conveying belt (2-4) and the closed throwing device (2-6) are respectively connected to the first driving motor (2-3) and the second driving motor (2-8) for changing the state of the material after throwing and assisting in adjusting the air separation effect.

7. A method for feeding a blade filament air separator to improve air separation efficiency, characterized in that: The method specifically comprises the following steps: S1. The incoming material pretreatment unit connects and delivers the materials delivered by the upstream feeding vibration conveyor of the leaf shred air separator, and screens and separates the materials and stems through the screening bars according to the different shapes and sizes of the materials and stems during the transportation process, and loosens the materials to a certain extent; S2. After screening and separation, the materials with larger shapes and sizes and a small number of stems located above the screening bar enter the high-speed conveyor belt of the air separation feeding unit through the first outlet of the incoming material pretreatment unit. The materials with larger shapes and sizes are separated from the small number of stems mixed therein by the inertia of the materials after leaving the high-speed conveyor belt and the air flow velocity in the separation position area. The stems fall through the impurity bucket component of the leaf shred air separator and leave the production line. The leaf shreds enter the box of the leaf shred air separator and settle on the belt of the conveying component of the leaf shred air separator and are transported to the discharge device of the leaf shred air separator and enter the downstream equipment. S3, after screening and separation, the small-sized materials below the screening bar are fully thrown into the air flow channel of the air separation feeding unit through the lower hopper and the closed thrower of the air separation feeding unit, and connected to the air flow channel of the impurity bucket component of the leaf shred air separator. The difference in suspension speed is used to separate the small-sized materials from most of the stems mixed therein. The stems fall through the impurity bucket component of the leaf shred air separator and leave the production line. The leaf shreds move upward with the air flow and enter the channel under the high-speed conveyor belt to settle and fall in the box of the leaf shred air separator and are collected with the leaf shreds after air separation in the above-mentioned process B, and then are conveyed by the belt of the conveying component of the leaf shred air separator to the discharge device of the leaf shred air separator and enter the downstream equipment; S4. In the above steps S2 and S3, the oversized and larger materials can fall down and enter the impurity bucket of the current leaf shred air separator to be processed and separated by air separation according to the existing loosening and deagglomeration mode, thereby completing the entire feeding process of the leaf shred air separator with auxiliary air separation.

8. A method for feeding a blade filament air separator for improving air separation efficiency as claimed in claim 7, characterized in that: The high-speed conveyor belt (2-4) can realize thin conveying of materials with large shapes and sizes and provide a throwing speed to obtain a certain air separation surface. The closed throwing device (2-6) can realize rapid throwing of materials with small shapes and sizes, making the materials relatively free and dispersedly distributed, while avoiding the existence of horizontal airflow, which is conducive to ensuring the air separation efficiency.

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