A pneumatic conveying system and method of use thereof

Abstract

The application discloses a kind of pneumatic conveying system and its using method, including air filter, pressure blower, feeding hopper, feeding pipe, storage chamber and filter box, the bottom of feeding hopper is communicated with feeding pipe, one end of feeding pipe is communicated with storage chamber, filter box is fixed on the top side of storage chamber;And, filter assembly is set in filter box, including cloth bag filter, air outlet pipe, mounting plate, oscillating piece, blowing piece and driving piece, cloth bag filter is fixed in filter box;Filter assembly in the application can drive cloth bag oscillation by the kinetic energy of air itself used, while reducing the required energy, prevent dust collector from being blocked.

Description

Technical Field

[0001] This invention relates to the field of pneumatic conveying technology, and in particular to a pneumatic conveying system and its method of use. Background Technology

[0002] Dilute phase pneumatic conveying is a process of pushing or pulling suspended materials from one location to another by maintaining sufficient airflow velocity. Dilute phase conveying is essentially a continuous process, characterized by high speed, low pressure, and low material-to-air ratio. Positive pressure dilute phase pneumatic conveying systems operate above atmospheric pressure and are used to transport bulk powder materials from one or more sources to one or more destinations. The conveying distance is moderate, and the conveying capacity is greater than that of vacuum negative pressure pneumatic conveying systems. A typical positive pressure dilute phase system consists of a rotary feeder, a pipeline system including long-radius reinforced elbows, a bag filter, and a Roots blower. In existing pneumatic conveying systems, the bag filter typically uses motor oscillation or pulse to remove dust accumulated on the surface of the filter bags. These methods require additional power, resulting in high energy consumption, and the large-scale oscillation of the entire bag filter may cause misalignment of the filter bags, affecting the filtration effect. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or existing pneumatic conveying systems and their methods of use, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the bag dust collectors in the existing pneumatic conveying system generally use the oscillation of the motor or pulse to remove the dust accumulated on the surface of the bag. These methods require additional power, consume a lot of energy, and the large-scale oscillation of the entire bag dust collector may cause the bag to misalign, affecting the filtration effect.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pneumatic conveying system, comprising: a pneumatic conveying assembly, including an air filter, a pressure blower, a feeding hopper, a feeding pipe, a storage chamber, and a filter box; the bottom of the feeding hopper is connected to the feeding pipe, one end of the feeding pipe is connected to the storage chamber, and the filter box is fixed to one side of the top of the storage chamber; and a filter assembly, disposed within the filter box, including a bag filter, an air outlet pipe, a mounting plate, a vibrating element, a blowing element, and a driving element; the bag filter is fixed within the filter box, the air outlet pipe is disposed at the top of the filter box, the mounting plate is fixed to one side of the filter box, and chambers are formed on both sides of its interior; the vibrating element is disposed within the filter box; the blowing element is disposed at the top of the mounting plate; and the driving element is disposed within the blowing element.

[0007] In a preferred embodiment of the pneumatic conveying system of the present invention, the oscillating element includes a movable rod, a connecting rod, and an oscillating rod. The movable rod slides within the filter box, the connecting rod is fixed to the top and bottom of the movable rod, and the oscillating rod is fixed to the connecting rod.

[0008] In a preferred embodiment of the pneumatic conveying system of the present invention, the oscillating element further includes a fixed tube, a fixed block, and a first spring. The fixed tube is fixed to one side of the filter box, the fixed block is fixed to one end of the movable rod and slides inside the fixed tube, and the two ends of the first spring are fixed to the inner wall of the fixed tube and the fixed block, respectively.

[0009] In a preferred embodiment of the pneumatic conveying system of the present invention, the blowing component includes a diverter pipe and a baffle. The two ends of the diverter pipe are respectively connected to the air outlet pipe and the chamber. The baffle is fixed to one side of the top of the air outlet pipe and is located outside the diverter pipe.

[0010] In a preferred embodiment of the pneumatic conveying system of the present invention, the diversion pipe is divided into an air inlet and an air outlet, and there are two air outlets, which are respectively connected to two of the chambers, and their diameters are smaller than the diameters of the air inlets.

[0011] In a preferred embodiment of the pneumatic conveying system of the present invention, the driving component includes a connecting plate, a movable plate, a driving plate, and a stop block. The connecting plate slides within the cavity and is fixed to one end of the movable rod. The movable plate slides within the diversion pipe and has an air duct inside. Mounting grooves communicating with the air ducts are provided on both sides. The driving plate slides on both sides of the mounting grooves. The stop block is fixed to the top of the driving plate and cooperates with the air duct. An inclined groove is provided within the connecting plate, and a through hole is provided within the inclined groove, which cooperates with the movable plate.

[0012] In a preferred embodiment of the pneumatic conveying system of the present invention, the driving component further includes a limiting block, a buffer block, a second spring, and a trigger. The limiting block is fixed to the inner wall of the diversion pipe and located at the bottom of the movable plate. The buffer block is fixed to the inner wall of the diversion pipe and located at the top of the movable plate. The two ends of the second spring are respectively fixed to the limiting block and the movable plate. The trigger is disposed between the two driving plates.

[0013] In a preferred embodiment of the pneumatic conveying system of the present invention, the triggering element includes a rotating plate, a push rod, and a third spring. The rotating plate is rotatably connected between the two driving plates. The push rod slides on the bottom of the movable plate, and its top end cooperates with the rotating plate. The two ends of the third spring are respectively fixed to the two driving plates.

[0014] In a preferred embodiment of the pneumatic conveying system of the present invention, the triggering element further includes a trigger plate, a top block, and an elastic rope. The trigger plate is fixed to the bottom end of the top rod, the top block is fixed to the bottom wall of the cavity and cooperates with the trigger plate, and the two ends of the elastic rope are respectively fixed to the trigger plate and the bottom of the movable plate.

[0015] Another object of the present invention is to provide a method of using a pneumatic conveying system, comprising the following steps:

[0016] The material in the hopper is fed into the feeding pipe by a pressure blower;

[0017] The material is conveyed to the storage chamber through the feeding pipe;

[0018] The air is filtered through a bag filter during the transportation process;

[0019] The filter assembly uses the kinetic energy of air to vibrate the bag filter, preventing clogging.

[0020] The beneficial effects of this invention are as follows: the filter component in this invention can drive the filter bag to vibrate by using the kinetic energy of the air itself, thereby reducing the required energy and preventing the dust collector from becoming clogged. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the 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. Wherein:

[0022] Figure 1 This is a scene diagram of a pneumatic conveying system and its usage.

[0023] Figure 2 This is a cross-sectional view of the filter component of a pneumatic conveying system and its usage.

[0024] Figure 3 This is a structural diagram of the oscillating element in a pneumatic conveying system and its application method.

[0025] Figure 4 This is a cross-sectional view of the vibrating element in a pneumatic conveying system and its application method.

[0026] Figure 5 This is an internal view of the mounting plate of a pneumatic conveying system and its usage.

[0027] Figure 6 Another perspective view of the limit block for a pneumatic conveying system and its usage.

[0028] Figure 7 This is a cross-sectional view of the drive component of a pneumatic conveying system and its usage.

[0029] Figure 8 This is a cross-sectional view of the moving plate of a pneumatic conveying system and its usage. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a pneumatic conveying system, including a pneumatic conveying component 100 and a filter component 200. The filter component 200 plays a better filtering role when the pneumatic conveying system 100 conveys materials, reducing the probability of blockage.

[0035] Specifically, the pneumatic conveying assembly 100 includes an air filter 101, a pressure blower 102, a feeding hopper 103, a feeding pipe 104, a storage chamber 105, and a filter box 106. The bottom of the feeding hopper 103 is connected to the feeding pipe 104, one end of the feeding pipe 104 is connected to the storage chamber 105, and the filter box 106 is fixed to one side of the top of the storage chamber 105.

[0036] This part is a standard component of the positive pressure dilute phase pneumatic conveying system. Its working principle is based on existing technology, and those skilled in the art can set it up as needed. It will not be described in detail here.

[0037] The filter assembly 200, disposed within the filter box 106, includes a bag filter 201, an air outlet duct 202, a mounting plate 203, an oscillating element 204, a blowing element 205, and a driving element 206. The bag filter 201 is fixed within the filter box 106, the air outlet duct 202 is disposed at the top of the filter box 106, the mounting plate 203 is fixed to one side of the filter box 106, and chambers S are opened on both sides inside the mounting plate 203. The oscillating element 204 is disposed within the filter box 106, the blowing element 205 is disposed at the top of the mounting plate 203, and the driving element 206 is disposed within the blowing element 205.

[0038] The bag filter 201 is an existing filter with multiple bags to improve air filtration efficiency. The air outlet duct 202 has an opening that is smaller at the top and larger at the bottom, and the inner walls are inclined on both sides. The air filtered by the bag filter 201 is discharged upward after passing through the inclined inner walls. The mounting plate 203 is rectangular and is used to fix the blower 205. The blower 205 guides part of the filtered air to the drive component 206, and then the drive component 206 drives the oscillator 204 to shake continuously, which vibrates the bags, causing the material attached to their surface to fall off and prevent it from hindering the filtration effect.

[0039] Example 2

[0040] Reference Figures 1-8 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0041] Specifically, the oscillating element 204 includes a movable rod 204a, a connecting rod 204b, and an oscillating rod 204c. The movable rod 204a slides inside the filter box 106, the connecting rod 204b is fixed to the top and bottom of the movable rod 204a, and the oscillating rod 204c is fixed to the connecting rod 204b.

[0042] Two movable rods 204a are provided, symmetrically distributed on both sides of the mounting plate 203. A simple seal is applied between them and the filter box 106 without excessively increasing friction to prevent excessive air leakage from the side, which would affect the filtration effect. The connecting rod 204b has two parts: a rigid top with multiple vibrating rods 204c; when the movable rod 204a swings left and right, it vibrates and impacts the surface of the filter bag, causing adhering materials to fall off; and a swingable rotating rod at the bottom, on which the vibrating rod 204c is fixed, swings irregularly with the airflow, thus impacting the filter bag irregularly and further improving the vibration efficiency. Simultaneously, the movement of the movable rod 204a also applies kinetic energy to the rotating rod, further improving its cleaning efficiency of the filter bag.

[0043] The oscillating element 204 also includes a fixed tube 204d, a fixed block 204e, and a first spring 204f. The fixed tube 204d is fixed to one side of the filter box 106, the fixed block 204e is fixed to one end of the movable rod 204a and slides inside the fixed tube 204d, and the two ends of the first spring 204f are fixed to the inner wall of the fixed tube 204d and the fixed block 204e, respectively.

[0044] The fixed tube 204d is rectangular, and one is provided at each end of the two movable rods 204a. The fixed block 204e is attached to the inner wall of the fixed tube 204d and slides inside it. At the same time, it can prevent excessive air leakage from the connection between the movable rod 204a and the filter box 106. The first spring 204f applies a force to the fixed block 204e and the movable rod 204a to move them into the filter box 106.

[0045] The blower 205 includes a split pipe 205a and a baffle 205b. The two ends of the split pipe 205a are connected to the air outlet pipe 202 and the chamber S, respectively. The baffle 205b is fixed to one side of the top of the air outlet pipe 202 and is located outside the split pipe 205a.

[0046] One end of the diversion pipe 205a is connected to the inclined inner wall of the air outlet pipe 202, so that when the air passes upward through the air outlet pipe 202, the air on one side will preferentially enter the diversion pipe 205a, and then be blown into the two chambers S by the diversion pipe 205a. At this time, the air is blocked by the baffle 205b, so that more air can enter the diversion pipe 205a.

[0047] The diversion pipe 205a is divided into an air inlet P1 and an air outlet P2. There are two air outlets P2, which are connected to two chambers S respectively. The diameter of the outlet is smaller than that of the air inlet P1.

[0048] The air inlet P1 is rectangular and located on the air outlet 202. The air outlet P2 is also rectangular, but its diameter is much smaller than that of the air inlet P1. As a result, when the air enters the air outlet P2 from the air inlet P1, it will undergo a compression process, which increases its air pressure. In addition, the split pipe 205a has a V-shaped guide, which allows the air to be blown evenly to the two air outlets P2.

[0049] The driving component 206 includes a connecting plate 206a, a movable plate 206b, a driving plate 206c, and a stop block 206d. The connecting plate 206a slides in the chamber S and is fixed to one end of the movable rod 204a. The movable plate 206b slides in the diversion pipe 205a and has an air duct K inside. It has mounting grooves V on both sides that communicate with the air duct K. The driving plate 206c slides on both sides of the mounting groove V. The stop block 206d is fixed to the top of the driving plate 206c and cooperates with the air duct K. The connecting plate 206a has an inclined groove Y and a through hole G, which cooperates with the movable plate 206b.

[0050] The movable plate 206b is T-shaped, with its upper part fitting against the diverter pipe 205a. This allows the compressed air to be blown into the outlet P2, applying higher pressure to the movable plate 206b and causing it to move downwards. The connecting plate 206a of the movable plate 206b is rectangular and slides left and right within the chamber S. Its outer side is sealed to the inner wall of the chamber S to prevent air leakage. The bottom of the drive plate 206c is chamfered, and there are two of them, symmetrically distributed in the mounting groove V. The air duct K has two parts: a larger opening at the top and a smaller opening at the bottom. The bottom is located above the two drive plates 206c. When the two drive plates 206c move outwards from the mounting groove V, they move the stop block 206d and block the air duct K. At this time, the force of the compressed air will be concentrated on the movable plate 206b, causing it to move downwards.

[0051] When air blows the movable plate 206b downwards, the two drive plates 206c move on the inclined groove Y, driving the connecting plate 206a to move into the filter box 106, thereby driving the movable rod 204a to move. At this time, the movable plate 206b moves along the through hole G. When it moves to the bottom of the inclined groove Y, the two drive plates 206c move into the mounting groove V until they are fully inserted. The inclined groove Y separates from the drive plates 206c, and both are located in the through hole G. At this time, the first spring 204f applies a force to the fixed block 204e and the movable rod 204a to move into the filter box 106, so that the movable rod 204a and the connecting plate 206a quickly reset. During this reset process, the movable rod 204a drives the connecting rod 204b and the vibrating rod 204c to quickly strike and vibrate the filter bag.

[0052] The driving component 206 also includes a limiting block 206e, a buffer block 206f, a second spring 206g, and a trigger 206h. The limiting block 206e is fixed to the inner wall of the diversion pipe 205a and is located at the bottom of the movable plate 206b. The buffer block 206f is fixed to the inner wall of the diversion pipe 205a and is located at the top of the movable plate 206b. The two ends of the second spring 206g are fixed to the limiting block 206e and the movable plate 206b, respectively. The trigger 206h is disposed between the two driving plates 206c.

[0053] Two limit blocks 206e are provided to prevent the movable plate 206b from moving downwards too much. The buffer block 206f provides a certain buffering effect to prevent the movable plate 206b from being damaged due to excessive force when it is reset upwards. The second spring 206g applies an upward reset force to the movable plate 206b. The trigger 206h is provided so that when the movable plate 206b moves downwards to the bottom, the auxiliary drive plate 206c moves into the mounting groove V.

[0054] When the drive plate 206c moves into the mounting groove V, the stop block 206d disengages from the air duct K. At this time, most of the air flows out to the side from the air duct K. The bottom of both sides of the diversion pipe 205a is provided with through holes, and the inner wall of the through hole G does not contact the movable plate 206b. Thus, the air discharged from the air duct K can flow out from the through holes on both sides of the diversion pipe 205a, reducing the pressure it exerts on the movable plate 206b. At this time, the movable plate 206b is pushed upward by the second spring 206g and resets until it moves above the connecting plate 206a. The two drive plates 206c continue to move to the outside of the mounting groove V, and so on, improving the cleaning efficiency of the cloth bag.

[0055] The trigger 206h includes a rotating plate 206h-1, a push rod 206h-2, and a third spring 206h-3. The rotating plate 206h-1 is rotatably connected between two drive plates 206c. The push rod 206h-2 slides on the bottom of the movable plate 206b, and its top end cooperates with the rotating plate 206h-1. The two ends of the third spring 206h-3 are fixed to the two drive plates 206c respectively.

[0056] Two rotating plates 206h-1 are provided, one end of which is rotatably connected to two drive plates 206c respectively. The other ends of the two rotating plates 206h-1 are rotatably connected by a shaft. The push rod 206h-2 is located directly below the connection position of the two rotating plates 206h-1. When the push rod 206h-2 moves upward, it can lift the two rotating plates 206h-1 upward, thereby driving the two drive plates 206c to move into the mounting groove V. The third spring 206h-3 applies an outward force to the two drive plates 206c to push the two drive plates 206c to be located outside the mounting groove V in the initial state.

[0057] The triggering element 206h also includes a triggering plate 206h-4, a top block 206h-5, and an elastic rope 206h-6. The triggering plate 206h-4 is fixed to the bottom end of the top rod 206h-2, the top block 206h-5 is fixed to the bottom wall of the chamber S and cooperates with the triggering plate 206h-4, and the two ends of the elastic rope 206h-6 are fixed to the triggering plate 206h-4 and the bottom of the movable plate 206b, respectively.

[0058] The trigger plate 206h-4 is rectangular, and together with the elastic rope 206h-6, it applies a downward thrust to the top rod 206h-2, so that it does not exert a force on the rotating plate 206h-1 in the initial state. The top block 206h-5 is rectangular, and during the downward movement of the movable plate 206b, the trigger plate 206h-4 and the top rod 206h-2 are pushed into the mounting groove V by the top block 206h-5.

[0059] Example 3

[0060] Reference Figures 1-8 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0061] Specifically, the pressure blower 102 sends air into the feeding pipe 104 and pushes the material in the feeding hopper 103 into the storage chamber 105 through the air, so that the material accumulates in the storage chamber 105. During this process, the bag filter 201 plays a filtering role to prevent the material from leaking out of the storage chamber 105. The filtered air is discharged from the air outlet pipe 202.

[0062] During the conveying process, part of the filtered air enters the diversion pipe 205a under the action of the baffle 205b. The air at the outlet P2 of the diversion pipe 205a is compressed and applies a downward thrust to the movable plate 206b, causing it to move downward. The two drive plates 206c move on the inclined groove Y, driving the connecting plate 206a to move into the filter box 106, thereby driving the movable rod 204a to move. At this time, the movable plate 206b moves along the through hole G. When it moves to the bottom of the inclined groove Y, the trigger plate 206h-4 and the push rod 206h-2 are pushed into the mounting groove V by the push block 206h-5. The push rod 206h-2 moves upward, pushing the two rotating plates 206h-1 upward, thereby driving the two drive plates 206c to move into the mounting groove V. At this time, the inclined groove Y separates from the drive plate 206c, and most of the air flows out from the air duct K to the side. The bottom of both sides of the diversion pipe 205a Each part is provided with through holes, and the inner wall of the through hole G does not contact the movable plate 206b, so that the air brought out from the air duct K can flow out through the through holes on both sides of the diversion pipe 205a, reducing the pressure it exerts on the movable plate 206b. At this time, the movable plate 206b is pushed upward by the second spring 206g and moves back to its original position until it moves above the connecting plate 206a. The two drive plates 206c continue to move to the outside of the mounting groove V. At the same time, the first spring 204f applies a force to the fixed block 204e and the movable rod 204a to move them into the filter box 106, so that the movable rod 204a and the connecting plate 206a quickly reset. During this reset process, the movable rod 204a drives the connecting rod 204b and the vibrating rod 204c to quickly strike and vibrate the filter bag, causing the material attached to the filter bag to fall off. This process is repeated to continuously vibrate and clean the filter bag without the need for additional energy, making it more efficient.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pneumatic conveying system, characterized in that: include, A pneumatic conveying assembly (100) includes an air filter (101), a pressure blower (102), a hopper (103), a feeding pipe (104), a storage chamber (105), and a filter box (106). The bottom of the hopper (103) is connected to the feeding pipe (104), one end of the feeding pipe (104) is connected to the storage chamber (105), and the filter box (106) is fixed to one side of the top of the storage chamber (105). A filter assembly (200), disposed within the filter box (106), includes a bag filter (201), an air outlet pipe (202), a mounting plate (203), an oscillator (204), a blower (205), and a drive unit (206). The bag filter (201) is fixed within the filter box (106), the air outlet pipe (202) is disposed at the top of the filter box (106), the mounting plate (203) is fixed to one side of the filter box (106), and chambers (S) are formed on both sides of its interior. The oscillator (204) is disposed within the filter box (106). The blower (205) is disposed on the top of the mounting plate (203), the drive (206) is disposed inside the blower (205), and the oscillating element (204) includes a movable rod (204a), a connecting rod (204b), and an oscillating rod (204c). The movable rod (204a) slides inside the filter box (106), the connecting rod (204b) is fixed to the top and bottom of the movable rod (204a), and the oscillating rod (204c) is fixed to the connecting rod (204b). The blower (205) includes a diverter pipe (205a) and a baffle (205b). The diversion pipe (205a) is connected to the air outlet pipe (202) and the chamber (S) at both ends, respectively. The baffle (205b) is fixed to one side of the top of the air outlet pipe (202) and located outside the diversion pipe (205a). The diversion pipe (205a) is divided into an air inlet (P1) and an air outlet (P2). There are two air outlets (P2), which are connected to two chambers (S) respectively. Their diameter is smaller than that of the air inlet (P1). The driving component (206) includes a connecting plate (206a), a movable plate (206b), a driving plate (206c), and a baffle (206d). The connecting plate (206a) slides within the chamber (S) and is fixed to one end of the movable rod (204a). The movable plate (206b) slides within the diversion pipe (205a) and has an air duct (K) inside. Mounting grooves (V) communicating with the air duct (K) are provided on both sides. The driving plate (206c) slides on both sides of the mounting groove (V). The stop block (206d) is fixed to the top of the driving plate (206c) and cooperates with the air duct (K). The connecting plate (206a) has an inclined groove (Y) inside and a through hole (G) inside the inclined groove (Y), which cooperates with the movable plate (206b).

2. The pneumatic conveying system as described in claim 1, characterized in that: The oscillating element (204) further includes a fixed tube (204d), a fixed block (204e), and a first spring (204f). The fixed tube (204d) is fixed to one side of the filter box (106), the fixed block (204e) is fixed to one end of the movable rod (204a) and slides inside the fixed tube (204d), and the two ends of the first spring (204f) are fixed to the inner wall of the fixed tube (204d) and the fixed block (204e), respectively.

3. The pneumatic conveying system as described in claim 2, characterized in that: The driving component (206) further includes a limiting block (206e), a buffer block (206f), a second spring (206g), and a trigger (206h). The limiting block (206e) is fixed to the inner wall of the diversion pipe (205a) and located at the bottom of the movable plate (206b). The buffer block (206f) is fixed to the inner wall of the diversion pipe (205a) and located at the top of the movable plate (206b). The two ends of the second spring (206g) are fixed to the limiting block (206e) and the movable plate (206b) respectively. The trigger (206h) is disposed between the two driving plates (206c).

4. The pneumatic conveying system as described in claim 3, characterized in that: The trigger (206h) includes a rotating plate (206h-1), a push rod (206h-2), and a third spring (206h-3). The rotating plate (206h-1) is rotatably connected between the two drive plates (206c). The push rod (206h-2) slides on the bottom of the movable plate (206b), and its top end cooperates with the rotating plate (206h-1). The two ends of the third spring (206h-3) are respectively fixed to the two drive plates (206c).

5. The pneumatic conveying system as described in claim 4, characterized in that: The trigger (206h) further includes a trigger plate (206h-4), a top block (206h-5), and an elastic rope (206h-6). The trigger plate (206h-4) is fixed to the bottom end of the top rod (206h-2). The top block (206h-5) is fixed to the bottom wall of the chamber (S) and cooperates with the trigger plate (206h-4). The two ends of the elastic rope (206h-6) are fixed to the bottom of the trigger plate (206h-4) and the movable plate (206b), respectively.

6. A method using the pneumatic conveying system according to any one of claims 1 to 5, characterized in that: Includes the following steps, The material in the feeding hopper (103) is introduced into the feeding pipe (104) by the pressure blower (102); The material is conveyed to the storage chamber (105) through the feeding pipe (104); During the conveying process, the air is filtered by a bag filter (201); The filter assembly (200) uses the kinetic energy of air to vibrate the bag filter (201) to prevent clogging.

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