A large porosity flipper conveyor

Abstract

The application discloses a large-transmittance flip plate conveying device, which comprises a chain wheel chain and a net plate, wherein the chain wheel chain is connected on two chain wheels; the net plate is arranged as a plurality of non-connected plate net plates; a driving mechanism for driving the net plate to rotate is arranged on one side of the chain wheel chain; one end of the net plate is connected to the driving mechanism, and the other end is slidably connected to the driving mechanism; a guide cross strip is arranged at the bottom between the two chain wheels; and the net plate is opened and separated by the guide cross strip through the driving mechanism during the rotation of the chain wheel chain. The device can make the conveying device stand up when conveying at the lower layer of the conveying path, reduce the wind resistance, increase the transmittance efficiency, finally improve the wind separation effect, and achieve the purpose of energy saving and consumption reduction.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, and in particular to a high-ventilation-rate flap conveyor device. Background Technology

[0002] In the tobacco threshing and re-drying process, the air separator, as a crucial leaf and stem separation device, primarily functions to separate free leaves, stems, and incompletely torn leaves using the inertia, gravity, and levitation force of the material. The quality of its air separation directly impacts the achievement of threshing targets. The air separator uses a high-powered fan to pump air into the lower chamber. The air passes through a conveyor belt at the bottom and enters the air separator chamber as suspended air for separation. Currently, the air in the workshop's air separator needs to pass through two layers of conveyor belts before entering the chamber. The permeability of a single layer is calculated to be only 33.3%, and the permeability of a double layer will be far lower than 33.3%. The conveyor belts severely hinder energy efficiency, and the resulting air resistance affects separation efficiency. Furthermore, the increased air resistance lowers the air velocity in the lower chamber, leading to higher pressure and dust accumulation in the lower chamber, clogging the air ducts and degrading equipment performance. In the existing technology, reducing the wind resistance of the conveyor belt and increasing the air permeability has become a major breakthrough direction for improving the utilization of the air separator. The current conventional method is to use woven large-hole mesh to greatly improve the air permeability, or to make a single mesh span multiple links to reduce the impact of the inherent part of the mesh plate on the reduction of air permeability. However, these methods still require at least two layers of mesh belts, and there is still a large wind resistance. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing two-layer conveying system, which has high wind resistance and low air permeability in the upper layer, and to provide a high-permeability flap conveyor device.

[0004] The objective of this invention is achieved through the following technical solution: a high-ventilation-rate flap conveyor device, comprising sprockets, chains, and mesh plates, with chains connected to two sprockets; the mesh plates are configured as multiple non-connected plate-type mesh plates, with a drive mechanism for driving the mesh plates to rotate connected to one side of the chain, one end of the mesh plate being rotated onto the drive mechanism, and the other end slidingly connected to the drive mechanism; a guide bar is provided at the bottom between the two sprockets, and the mesh plates are opened and separated at the lower conveying point via the drive mechanism and the guide bar during the rotation of the chain.

[0005] Optionally, the drive mechanism includes a first connecting plate, a second connecting plate, a drive plate, a mesh plate positioning groove, a support rod, and a cam; the first connecting plate is fixedly mounted on one side of the chain, and the second connecting plate is fixedly mounted on the drive plate, with the first connecting plate and the second connecting plate fastened together by screws; the drive plate is configured as a fan-shaped plate, with a mesh plate fixing shaft rotatably mounted at the center of the drive plate, and an arc-shaped mesh plate positioning groove provided on the inner side of the arc of the drive plate; one end of the mesh plate is connected to the mesh plate fixing shaft, and the other end is slidably mounted in the mesh plate positioning groove via a mesh plate movable shaft; a support rod is provided at the bottom of the mesh plate, and a cam is rotatably mounted at the end of the support rod, the cam contacting the guide bar after moving to the bottom with the mesh plate.

[0006] Optionally, a torsion spring is fitted onto the rotating shaft that fixes the mesh plate.

[0007] Optionally, the guide bar includes a locking guide bar and a releasing guide bar. The locking guide bar is located on the bottom chain input side, and the releasing guide bar is located on the bottom chain output side. The drive plate is provided with a locking and releasing mechanism. After the chain enters the locking guide bar, the locking and releasing mechanism locks the movable shaft of the mesh plate, causing the mesh plate to stand upright. After the chain enters the releasing guide bar, the locking and releasing mechanism releases the mesh plate shaft, causing the mesh plate to reset.

[0008] Optionally, the support rod is located near the edge of the chain, the locking guide is long and inclined, and the release guide is V-shaped. The locking guide and the release guide are located near the edge of the chain and contact the cam on the support rod during the movement of the chain.

[0009] Optionally, the locking release mechanism is configured as a "7"-shaped locking hook, which is connected to the lower side of the end of the mesh plate positioning slide groove via a locking hook pivot; a spring pin is provided at the bottom of the locking hook, a spring connecting plate is provided on the drive plate, and a tension spring is provided between the spring connecting plate and the spring pin.

[0010] Optionally, a locking hook positioning groove is provided on the drive plate, and one end of the spring pin is slidably connected in the locking hook positioning groove.

[0011] Optionally, the "7" head of the locking hook is tilted, with its inclined surface tilted to the positioning groove of the mesh plate, and the inner side of the "7" head of the locking hook is set to a semi-circular arc shape.

[0012] Optionally, when the movable shaft of the mesh plate slides to the end of the mesh plate positioning groove, the "7" tail of the locking hook is located on the other side of the end of the mesh plate positioning groove; when the movable shaft returns to its original position, it disengages from the "7" head of the locking hook and just contacts the "7" tail of the locking hook. When the movable shaft disengages from contact with the "7" tail of the locking hook, the line connecting the spring pin on the "7" tail of the locking hook and the locking hook shaft is located on the side of the tension center line of the tension spring near the mesh plate positioning groove.

[0013] Optionally, the screen is a perforated plate with matching hinge structures on two sides along its length, and the hinge structures have no pins.

[0014] The present invention has the following advantages: This device connects a drive mechanism that drives the mesh plate to rotate on one side of the chain. One end of the mesh plate is connected to the drive mechanism, and the other end is slidably connected to the drive mechanism, allowing the mesh plate to slide on the drive mechanism, thereby achieving flipping and positioning. Then, a guide bar is set at the bottom between the two sprockets. The guide bar can be connected to the support of the conveying device through a connecting shaft, etc. During the rotation of the chain, the mesh plate is opened and separated at the lower conveying point by the drive mechanism through the guide bar to achieve flipping. After flipping, the mesh plate is restricted by the sliding on the drive mechanism and can only flip to a set angle, thereby making the conveying device stand upright at the lower level of the conveying channel, reducing wind resistance, increasing ventilation efficiency, and ultimately improving the air separation effect, achieving the purpose of energy saving and consumption reduction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the present invention.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 This is a side view of the present invention.

[0019] Figure 4 This is a schematic diagram of the connection structure at the drive mechanism of the present invention.

[0020] Figure 5 This is a side view of the drive mechanism of the present invention.

[0021] Figure 6 This is a rear view of the drive mechanism of the present invention.

[0022] In the figure, there are sprocket (1), chain (2), locking guide bar (3), release guide bar (4), drive mechanism (5), first connecting plate (51), second connecting plate (52), drive plate (53), locking hook (54), spring connecting plate (55), tension spring (56), support rod (57), cam (58), torsion spring (59), mesh plate positioning groove (531), locking hook positioning groove (532), locking hook shaft (541), spring pin (542), mesh plate (8), mesh plate groove (81), mesh plate movable shaft (82), and mesh plate fixed shaft (83). Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figure 1 , Figure 2 and Figure 3The illustrated high-permeability flip-plate conveyor device includes sprockets 1, chains 2, and mesh plates 8. This device is a modification of a traditional plate conveyor. Specifically, chains 2 are connected to two sprockets 1. The mesh plates 8 are composed of multiple unconnected plates, and a drive mechanism 5 is connected to one side of the chains 2 to rotate the mesh plates 8. One end of the mesh plate 8 is rotated onto the drive mechanism 5, and the other end slides onto it, allowing the mesh plates 8 to slide on the drive mechanism 5 for flipping and positioning. A guide bar is installed at the bottom between the two sprockets 1. This guide bar can be connected to the support of the conveyor device via a connecting shaft. During the rotation of the chains 2, the mesh plates 8 are opened and separated at the lower conveying level via the drive mechanism 5 and the guide bar, achieving flipping. After flipping, the mesh plates 8 are restricted by the sliding motion on the drive mechanism 5 and can only flip to a set angle. This allows the conveyor device to stand upright at the lower level of the conveyor, reducing wind resistance, increasing ventilation efficiency, and ultimately improving air distribution, achieving energy saving and consumption reduction.

[0027] In another embodiment, the mechanism that enables the drive mechanism 5 to flip the mesh plate 8 can be directly driven by a motor or pulled by a telescopic device. However, since it also needs to move with the chain 2, although the above two methods can achieve flipping and standing, they involve other power supply or drive devices, making them relatively complex. Therefore, as... Figure 4 As shown, this embodiment provides another type of drive mechanism 5, which adopts a purely mechanical drive method to avoid adding other components. Specifically, the drive mechanism 5 includes a first connecting plate 51, a second connecting plate 52, a drive plate 53, a mesh plate positioning groove 531, a support rod 57, and a cam 58. The first connecting plate 51 is fixedly mounted on one side of the chain 2, and the second connecting plate 52 is fixedly mounted on the drive plate 53. The first connecting plate 51 and the second connecting plate 52 are fastened together by screws, which facilitates the connection and placement of the entire device.

[0028] The drive plate 53 of this device is configured as a sector-shaped plate. A screen plate fixing shaft 83 is rotatably mounted at the center of the drive plate 53. An arc-shaped screen plate positioning groove 531 is provided on the inner side of the arc of the drive plate 53. One end of the screen plate 8 is connected to the screen plate fixing shaft 83, and the other end is slidably mounted in the screen plate positioning groove 531 through the screen plate movable shaft 82. In this way, the screen plate 8 can rotate around the center of the sector of the drive plate 53 along the arc of the drive plate 53. The rotation of the screen plate 8 is achieved by a support rod 57 at the bottom of the screen plate 8. A cam 58 is rotatably mounted at the end of the support rod 57. After the cam 58 moves to the bottom with the screen plate 8, it contacts the guide bar. Thus, as the sprocket 1 rotates, it drives the screen plate 8 on the chain 2 to rotate. When the cam 58 on the screen plate 8 contacts the guide bar, the screen plate 8 is restricted by the guide bar and rotates around the screen plate fixing shaft 83, thereby realizing the flipping rotation of the screen plate 8 at the bottom.

[0029] In another embodiment, in order to enable the mesh plate 8 to actively return to its original position when it is at the top of the conveyor, a torsion spring 59 is sleeved on the mesh plate fixing shaft 83 to assist its active reset.

[0030] In this design, such as Figure 1 As shown, the drive plate 53 is set vertically on the upper layer. Therefore, when the drive plate 53 is at the top, in addition to the torsion spring 59, there is also the weight of the mesh plate 8 itself. The two forces work together to reset, making the reset more convenient.

[0031] In another embodiment, if the support rod 57, cam 58, and guide bar on the mesh plate 8 are all located below the mesh plate 8, this would inevitably occupy a certain amount of space and increase wind resistance. Therefore, the technical solution provided in this embodiment segments the original guide bar to reduce its area, and then replaces the continuous restriction by setting a self-locking mechanism on the drive plate 53. Specifically, the guide bar includes a locking guide bar 3 and a releasing guide bar 4. The locking guide bar 3 is located on the input side of the bottom chain 2, and the releasing guide bar 4 is located on the output side of the bottom chain 2, thus avoiding the air vent of the mesh plate 8 and reducing the impact on the ventilation of the mesh plate 8. A locking and releasing mechanism is provided on the drive plate 53. After the chain 2 enters the locking guide bar 3, the locking and releasing mechanism locks the mesh plate movable shaft 82 of the mesh plate 8 to make the mesh plate 8 stand upright. After the chain 2 enters the releasing guide bar 4, the locking and releasing mechanism releases the mesh plate movable shaft 82 of the mesh plate 8 to reset the mesh plate 8. In this way, the area of ​​the guide bar is reduced, and all components are located on both sides, without affecting the normal ventilation of the mesh plate 8.

[0032] In another embodiment, to make the overall structure more compact and adaptable, and also to facilitate the operation of the locking and releasing mechanism, the support rod 57 is positioned near the edge of the chain 2, the locking guide bar 3 is elongated and inclined, and the releasing guide bar 4 is V-shaped. The locking guide bar 3 and the releasing guide bar 4 are positioned near the edge of the chain 2 and contact the cam 58 on the support rod 57 during the movement of the chain 2. Thus, after contacting the locking guide bar 3, the cam 58 on the support rod 57 moves towards the inclined side, is pressed against the locking and releasing mechanism, and is released and restored when passing the releasing guide bar 4.

[0033] In another embodiment, a locking and releasing mechanism can be implemented using a hook-and-loop fastener. A lever is provided on the locking guide bar 3 and the releasing guide bar 4 to actuate the hook-and-loop fastener. When the locking and releasing mechanism passes the locking guide bar 3, the lever on the locking guide bar 3 actuates the hook-and-loop fastener to the mesh plate 8. When it passes the releasing guide bar 4, it is disengaged, thus achieving a reset. Of course, this application provides a specific purely mechanical locking and releasing mechanism, such as... Figures 4 to 6 The mechanism is configured as a "7"-shaped locking hook 54, which is connected to the lower side of the end of the mesh plate positioning groove 531 via a locking hook pivot 541. A spring pin 542 is provided at the bottom of the locking hook 54, and a spring connecting plate 55 is provided on the drive plate 53. A tension spring 56 is provided between the spring connecting plate 55 and the spring pin 542. Thus, when the mesh plate 8 is limited and pressed by the locking guide bar 3, it is pressed into the hook of the locking hook 54 and hooked, thereby preventing it from resetting. When the mesh plate 8 needs to reset, the locking hook 54 is opened by releasing the guide bar 4 and pressing it backward again. The mesh plate 8 resets under the drive of the torsion spring 59, and the locking hook 54 is pulled back to reset by the tension spring 56.

[0034] In another embodiment, in order to prevent the locking hook 54 from being pulled and rotated excessively and failing, a locking hook positioning groove 532 is provided on the drive plate 53, and one end of the spring pin 542 is slidably connected in the locking hook positioning groove 532 and is limited therein.

[0035] In another embodiment, in order to prevent the locking hook 54 from blocking the movable pivot 82 of the mesh plate and thus preventing it from sliding into the hook of the locking hook 54, the "7" head of the locking hook 54 is inclined, and its inclined surface is inclined with the mesh plate positioning groove 531. The inner side of the "7" head of the locking hook 54 is set as a semi-circular arc.

[0036] In another embodiment, a key point is how to achieve the mechanical locking and releasing of the mesh panel movable shaft 82 and the return of the locking hook 54 as the mesh panel movable shaft 82 moves. In this device, as... Figure 4As shown, the locking hook 54 of this device has three states: locked state, locked state, and released state. These three states are achieved through the interaction of the movable rotating shaft 82 of the mesh plate and the tension spring 56. Specifically, in this device, the tension spring 56 is located between the spring connecting plate 55 and the spring pin 542, and there is a force line between them, which is the extension axis of the tension spring 56 (hereinafter referred to as the tension line). Because the spring pin 542 rotates, the tension line of the tension spring 56 rotates with the spring connecting plate 55 as the rotation center. Similarly, as the locking hook 54 rotates, there is a force line between the spring pin 542 and the locking hook rotating shaft 541 (hereinafter referred to as the force line), and the force line also rotates with the rotation of the spring pin 542. When the tension line and the spring pin 542 rotate together, the tension line of the spring 56 rotates with the locking hook 541. When the force lines coincide, the force direction of the locking hook 54 is the same as that of the tension line. At this time, the locking hook 54 can be fixed. Similarly, when the tension line and the force line form an angle, under the tension of the tension spring 56, the spring pin 542 will rotate towards the tension line. Utilizing this force characteristic, when the "7" tail of the locking hook 54 slides to the end of the mesh plate positioning groove 531 on the other side of the end of the mesh plate positioning groove 531, the tension line is close to one side, and the locking hook 54 is in a ready-to-lock state. At this time, if the mesh plate movable shaft 82 slides in the mesh plate positioning groove 531, the mesh plate movable shaft 82 will overcome the elastic force of the tension spring 56 and slide into the semi-circular hook groove and be locked, and the locking hook 54 will also be in a locked state. As the movable shaft 82 of the mesh panel continues to slide backward, it overcomes the elastic force of the tension spring 56 and drives the locking hook 54 to continue rotating. When the tension line crosses the force line and is on the other side of the force line, the tension spring 56 exerts force on the other side, thus keeping the locking hook 54 open under the tension of the tension spring 56. The locking hook 54 is in the released state, and at this time, the movable shaft 82 of the mesh panel can slide out of the locking hook 54. When the movable shaft 82 of the mesh panel slides back to its original position, it also needs to drive the locking hook 54 back to its locked state. Specifically, when the movable shaft 82 of the mesh panel disengages from the locking hook 54, it just comes into contact with the tail of the locking hook 54. As the movable shaft 82 of the mesh panel continues to slide downward, it continues to block the tail of the locking hook 54 downward until the tension line crosses the force line again, causing the locking hook 54 to return to its locked state. Therefore, when the device is set up, after the movable rotating shaft 82 of the mesh plate returns to its original position and disengages from the "7" head of the locking hook 54, it just comes into contact with the "7" tail of the locking hook 54. When the movable rotating shaft 82 of the mesh plate disengages from contacting the "7" tail of the locking hook 54, the line connecting the spring pin 542 on the "7" tail of the locking hook 54 and the locking hook rotating shaft 541 is located on the side of the tension center line of the tension spring 56 near the mesh plate positioning groove 531.Thus, this structure allows the locking hook 54 to automatically lock, release, and return to its original position during the rotation of the movable shaft 82 of the mesh panel. The rotation of the movable shaft 82 is achieved through the locking guide bar 3 and the release guide bar 4. Therefore, the tilt angle of the locking guide bar 3 and the position of the lowest point of the release guide bar 4 are crucial for their coordinated operation. The tilt angle of the locking guide bar 3 needs to allow the movable shaft 82 of the mesh panel to slide into the locking hook 54 without causing the tension line to cross the force line. Conversely, the lowest point of the release guide bar 4 must ensure that the tension line crosses the force line, putting the locking hook 54 in the open state. In this way, the entire mechanism achieves its function through mechanical transmission without adding other control equipment, reducing wind resistance and control complexity, making it very convenient.

[0037] In another embodiment, for ease of use in conjunction with the structure of this device, the mesh plate 8 is a perforated plate, and mutually compatible hinge structures are provided on two sides along the length of the mesh plate 8, with no pins inside the hinge structures.

[0038] This device adopts a flip-plate structure. The mesh plate is connected to the chain link by a torsion spring and a drive plate 53. At the same time, the locking hook is pulled into the locking position by a tension spring. When passing through the forced guide rail, the mesh plate deflects, pressing the locking hook backward. After passing through the forced guide rail, the locking hook hooks the mesh plate, putting the mesh plate in a flipped position, which increases the air permeability at the bottom. As the mesh plate moves, the mesh plate passes through the forced guide rail again, causing the locking hook to retract to the loosened position. After passing through the forced guide rail, the mesh plate flips down to return to its original position. During the return process, the locking hook is pushed back into the ready-to-lock position. This cycle continues, keeping the lower mesh plate in a semi-open position, improving the air permeability. This structure optimizes the air permeability of the conveyor mesh surface, reduces wind resistance, improves the air separation effect, and achieves the purpose of energy saving and consumption reduction.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-ventilation-rate flap conveyor device, comprising sprockets (1), chains (2), and mesh plates (8), wherein chains (2) are connected and arranged on two sprockets (1); characterized in that: The mesh plate (8) is configured as multiple non-connected plate mesh plates. A drive mechanism (5) for driving the mesh plate (8) to rotate is connected to one side of the chain (2). One end of the mesh plate (8) is connected to the drive mechanism (5), and the other end is slidably connected to the drive mechanism (5). A guide bar is set at the bottom between the two sprockets (1). During the rotation of the chain (2), the mesh plate (8) is opened and separated at the lower conveyor via the drive mechanism (5) and the guide bar. The drive mechanism (5) includes a first connecting plate (51), a second connecting plate (52), a drive plate (53), a mesh plate positioning groove (531), a support rod (57), and a cam (58); the first connecting plate (51) is fixedly mounted on one side of the chain (2), and the second connecting plate (52) is fixedly mounted on the drive plate (53). The first connecting plate (51) and the second connecting plate (52) are fastened together by screws; the drive plate (53) is configured as a fan-shaped plate, and a mesh plate fixing shaft is rotatably mounted at the center of the drive plate (53). (83), a torsion spring (59) is sleeved on the fixed rotating shaft (83) of the mesh plate; an arc-shaped mesh plate positioning groove (531) is provided on the inner side of the arc of the drive plate (53), one end of the mesh plate (8) is connected to the fixed rotating shaft (83), and the other end is slidably set in the positioning groove (531) of the mesh plate through the movable rotating shaft (82) of the mesh plate; a support rod (57) is provided at the bottom of the mesh plate (8), and a cam (58) is provided at the end of the support rod (57). After the cam (58) moves to the bottom with the mesh plate (8), it contacts the guide bar; The guide bar includes a locking guide bar (3) and a releasing guide bar (4). The locking guide bar (3) is located on the input side of the bottom chain (2), and the releasing guide bar (4) is located on the output side of the bottom chain (2). The drive plate (53) is provided with a locking and releasing mechanism. After the chain (2) enters the locking guide bar (3), the locking and releasing mechanism locks the movable shaft (82) of the mesh plate (8) to make the mesh plate (8) stand up. After the chain (2) enters the releasing guide bar (4), the locking and releasing mechanism releases the movable shaft (82) of the mesh plate (8) to make the mesh plate (8) reset. The support rod (57) is located near the edge of the chain (2). The locking guide bar (3) is long and inclined. The release guide bar (4) is V-shaped. The locking guide bar (3) and the release guide bar (4) are located near the edge of the chain (2) and contact the cam (58) on the support rod (57) during the movement of the chain (2). The locking release mechanism is a "7" shaped locking hook (54). The locking hook (54) is connected to the lower side of the end of the mesh plate positioning slide groove (531) through the locking hook pivot (541). A spring pin (542) is provided at the bottom of the locking hook (54). A spring connecting plate (55) is provided on the drive plate (53). A tension spring (56) is provided between the spring connecting plate (55) and the spring pin (542).

2. The high-ventilation-rate flap conveyor device according to claim 1, characterized in that: A locking hook positioning groove (532) is provided on the drive plate (53), and one end of the spring pin (542) slides in the locking hook positioning groove (532).

3. The high-ventilation-rate flap conveyor device according to claim 1, characterized in that: The "7" head of the locking hook (54) is inclined, and its inclined surface is inclined to the positioning groove (531) of the mesh plate. The inner side of the "7" head of the locking hook (54) is set as a semi-circular arc.

4. The high-ventilation-rate flap conveyor device according to claim 3, characterized in that: When the locking hook (54) slides to the end of the mesh plate positioning groove (531) on the movable shaft (82) of the mesh plate, the "7" tail is located on the other side of the end of the mesh plate positioning groove (531); when the movable shaft (82) of the mesh plate returns to its original position, it disengages from the "7" head of the locking hook (54) and just contacts the "7" tail of the locking hook (54). When the movable shaft (82) of the mesh plate disengages from the contact with the "7" tail of the locking hook (54), the line connecting the spring pin (542) on the "7" tail of the locking hook (54) and the locking hook shaft (541) is located on the side of the tension center line of the tension spring (56) near the mesh plate positioning groove (531).

5. A high-ventilation-rate flap conveyor device according to any one of claims 1 to 4, characterized in that: The mesh plate (8) is a plate-shaped perforated mesh plate. On the two sides of the mesh plate (8) along the length direction, there are mutually compatible hinge structures. There are no pins in the hinge structures.

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