Dust collection device for coal conveying system and coal conveying system

Abstract

The invention provides a dust collection device for a coal conveying system and the coal conveying system, and relates to the technical field of dedusting, the dust collection device comprises a coal falling shell, the lower end of the coal falling shell is fixedly connected with the left side of the upper end of a conveying shell, a coal falling cavity is formed in the coal falling shell, a conveying cavity is formed in the right end of the conveying shell, and a belt type conveying mechanism is installed in the conveying cavity; the coal falling cavity communicates with the left side of the conveying cavity, a dust suction shell is fixedly arranged in the middle of the upper end of the conveying shell, a dust collection assembly and a filtering and dust falling assembly are connected to the dust suction shell, and the dust collection assembly and the filtering and dust falling assembly in the dust suction shell can adsorb, filter and collect pulverized coal flying dust. And the collected pulverized coal flying dust is automatically fed into the belt type conveying mechanism in the conveying cavity again, and the pulverized coal absorbed by the dust removal device does not need to be manually fed into the coal conveying system, so that the problem that although a traditional cloth bag type dust removal device can play a certain dust removal role, in order to avoid coal waste, the dust removal efficiency is greatly improved is solved. The coal powder absorbed by the dust removal device needs to be manually fed into a coal conveying system again, and the operation is tedious.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and in particular to a dust collecting device for a coal conveying system and a coal conveying system. Background Art

[0002] In the process of transporting coal, the coal conveyor belt will generate a large amount of coal dust due to the transfer drop. This coal dust not only seriously pollutes the environment and endangers the health of operators, but also makes it difficult to meet the requirements of clean production. Once the coal dust enters the electrical components of the coal conveying system, it is very easy to cause system failure, thereby affecting the safe production of the power plant. Although the traditional bag-type dust removal device can play a certain dust removal role, in order to avoid coal waste, the coal dust absorbed by the dust removal device needs to be manually sent back into the coal conveying system, which is cumbersome. Summary of the invention

[0003] The present invention provides a dust suction device and a coal conveying system for a coal conveying system, so as to solve the above-mentioned technical problem that although the traditional bag-type dust removal device can play a certain dust removal role, in order to avoid waste of coal, the coal powder absorbed by the dust removal device needs to be manually sent back into the coal conveying system, which is cumbersome to operate.

[0004] In order to solve the above technical problems, the present invention discloses a dust suction device for a coal conveying system, comprising a coal dropping shell, the lower end of the coal dropping shell is fixedly connected to the upper left side of the conveying shell, a coal dropping cavity is provided inside the coal dropping shell, a conveying cavity is provided at the right end of the conveying shell, a belt conveying mechanism is installed in the conveying cavity, the coal dropping cavity and the left side of the conveying cavity are connected, a dust suction shell is fixedly provided in the middle of the upper end of the conveying shell, and a dust collecting assembly and a filtering dust reduction assembly are connected to the dust suction shell.

[0005] Preferably, the dust collecting assembly includes a dust suction chamber arranged inside the right side of the dust suction shell, a plurality of air guide plates are installed between the front and rear ends of the dust suction chamber, a dust suction port is provided in the middle of the upper end of the conveying shell, and the dust suction chamber is connected with the conveying chamber through the dust suction port.

[0006] Preferably, a dust collecting chamber is arranged inside the left side of the dust suction shell, the dust collecting chamber and the upper side of the dust suction chamber are connected through a vent, a return port is provided in the middle of the upper end of the conveying shell, a fixing plate is fixed on the right side of the upper end of the dust collecting chamber, and the dust collecting chamber is connected with the conveying chamber through the return port.

[0007] Preferably, the dust collecting assembly also includes a dust collecting fan arranged on the left side of the upper end of the dust collecting chamber, the dust collecting fan is fixedly connected to the driving shaft, the driving shaft passes through the upper end of the dust collecting shell and is fixedly connected to the motor, and the motor is fixedly arranged at the upper end of the dust collecting shell.

[0008] Preferably, a baffle is rotatably provided in the return opening, the baffle is tilted, and a spring is fixedly provided between the baffle and the return opening.

[0009] Preferably, the filtering dust reduction assembly includes a filter screen, which is installed at the left end of the dust collecting chamber. The dust collecting chamber is connected to the recovery pipe through the filter screen, and the recovery pipe is fixedly connected to the left side of the lower end of the storage shell. The storage shell is fixedly arranged at the right end of the coal dropping shell. A storage chamber is provided inside the storage shell, and a sliding plate is slidably provided in the storage chamber. A liquid storage chamber is formed between the upper end of the sliding plate and the upper end of the storage chamber, and an air pressure chamber is formed between the lower end of the sliding plate and the lower end of the storage chamber. The air pressure chamber is connected to the recovery pipe.

[0010] Preferably, a nozzle is installed between the storage chamber and the coal dropping chamber, and the nozzle is installed at the right end of the coal dropping shell.

[0011] Preferably, the middle part of the lower end of the air pressure chamber is connected with the closed chamber through an air supply pipe, the closed chamber is arranged inside the fixed shell, the fixed shell is fixedly arranged at the upper end of the dust collection shell, a closed plate is slidably provided in the closed chamber, a spring rod is fixedly provided between the closed plate and the closed chamber, the lower end of the closed plate is fixedly connected with a driving rod, the driving rod passes through the lower end of the closed chamber into the dust collecting chamber and is rotatably connected with the dust collecting roller, and the dust collecting roller is in corresponding contact with the filter screen.

[0012] Preferably, a water inlet pump is installed at the water replenishment port at the upper end of the storage shell, the water replenishment port is connected with the storage cavity, an air outlet is penetrated through the right side of the lower end of the storage shell, a blocking plate is rotatably provided in the air outlet, a spring 2 is fixedly provided between the blocking plate and the air outlet, the lower inclined end of the blocking plate is in contact with the lower horizontal end of the contact block, the lower horizontal end of the contact block is slidably connected with a slide port 1, the slide port 1 is connected with the air outlet, a cavity is provided inside the right end of the storage shell, a contact block is slidably provided in the cavity, a plurality of spring rods 2 are fixedly provided between the cavity and the contact block, a slide port 2 is connected to the upper side of the cavity and the storage cavity, the slide port 2 is slidably connected to the upper horizontal end of the contact block, and the upper horizontal end of the contact block is in corresponding contact with the sliding plate.

[0013] A coal conveying system includes a dust suction device for the coal conveying system, a guide plate is rotatably provided at the lower left end of the coal dropping chamber, a damping spring rod is rotatably provided between the guide plate and the conveying chamber, a rotating plate is rotatably provided at the upper right end of the conveying chamber, a conveyor belt in a belt conveyor mechanism contacts with a tensioning wheel, the tensioning wheel is rotatably connected to a connecting shaft, the connecting shaft passes through a sliding chamber at the front end of the conveying chamber and is rotatably connected to a connecting block, the connecting block is slidably connected to the front end of a conveying shell, the connecting block is fixedly connected to a rack, the rack is meshed with a gear, the gear is fixedly connected to a rotating shaft, the rotating shaft passes through the front end of a return port, enters the return port and is fixedly connected to a baffle.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of region A;

[0018] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area B.

[0019] In the figure: 1, conveying shell; 2, conveying chamber; 3, guide plate; 4, damping spring rod; 5, belt conveyor mechanism; 6, tension wheel; 7, connecting block; 8, rack; 9, gear; 10, spring 1; 11, baffle; 12, return opening; 13, rotating plate; 14, dust suction opening; 15, dust suction shell; 16, air guide plate; 17, dust suction chamber; 18, ventilation opening; 19, fixed plate; 20, dust collection chamber; 21, coal falling shell; 22, coal falling chamber; 2 3. Nozzle; 24. Filter; 25. Motor; 26. Storage chamber; 27. Cavity; 28. Contact block; 29. ​​Spring rod 2; 30. Sliding plate; 31. Air vent; 32. Blocking plate; 33. Spring 2; 34. Air pipe; 35. Fixed shell; 36. Sealed plate; 37. Sealed chamber; 38. Recovery pipe; 39. Drive shaft; 40. Dust fan; 41. Dust collecting roller; 42. Drive rod; 43. Spring rod 1; 44. Storage shell. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] The present invention provides the following embodiments

[0023] Example 1

[0024] The embodiment of the present invention provides a dust collecting device for a coal conveying system, such as Figure 1-Figure 3 As shown, it includes a coal dropping shell 21, the lower end of which is fixedly connected to the left upper end of the conveying shell 1, a coal dropping chamber 22 is provided inside the coal dropping shell 21, a conveying chamber 2 is provided at the right end of the conveying shell 1, a belt conveying mechanism 5 is installed in the conveying chamber 2, the coal dropping chamber 22 is connected to the left side of the conveying chamber 2, a dust suction shell 15 is fixedly provided in the middle of the upper end of the conveying shell 1, and a dust collecting component and a filtering dust reduction component are connected to the dust suction shell 15.

[0025] The beneficial effects of the above technical solution are:

[0026] The coal falls onto the belt conveyor 5 through the coal dropping chamber 22 and is transported to the target position via the belt conveyor 5. The dust collecting assembly and the filtering dust reduction assembly in the dust suction shell 15 can absorb, filter and collect the coal powder dust, and automatically send the collected coal powder dust back to the belt conveyor 5 in the conveying chamber 2. There is no need to manually send the coal powder absorbed by the dust removal device back into the coal conveying system, which solves the technical problem that although the traditional bag-type dust removal device can play a certain dust removal role, in order to avoid waste of coal, the coal powder absorbed by the dust removal device needs to be manually sent back into the coal conveying system, which is cumbersome to operate.

[0027] Example 2

[0028] On the basis of Example 1, Figure 1-Figure 3 As shown, the dust collecting assembly includes a dust collecting chamber 17 disposed inside the right side of the dust collecting shell 15, a plurality of air guide plates 16 are installed between the front and rear ends of the dust collecting chamber 17, a dust collecting port 14 is disposed in the middle of the upper end of the conveying shell 1, and the dust collecting chamber 17 is connected with the conveying chamber 2 through the dust collecting port 14;

[0029] A dust collecting chamber 20 is provided inside the left side of the dust collecting shell 15, and the upper side of the dust collecting chamber 20 and the dust collecting chamber 17 are connected through a vent 18. A return opening 12 is provided in the middle of the upper end of the conveying shell 1, and a fixing plate 19 is fixedly provided on the right side of the upper end of the dust collecting chamber 20, and the dust collecting chamber 20 is connected with the conveying chamber 2 through the return opening 12;

[0030] The dust collecting assembly further includes a dust collecting fan 40 disposed on the left side of the upper end of the dust collecting chamber 20, the dust collecting fan 40 is fixedly connected to the drive shaft 39, the drive shaft 39 passes through the upper end of the dust collecting housing 15 and is fixedly connected to the motor 25, and the motor 25 is fixedly disposed on the upper end of the dust collecting housing 15;

[0031] A baffle 11 is rotatably provided in the return opening 12 , the baffle 11 is tilted, and a spring 10 is fixedly provided between the baffle 11 and the return opening 12 .

[0032] The beneficial effects of the above technical solution are:

[0033] When the motor 25 is working, it drives the driving shaft 39 to rotate, and the driving shaft 39 drives the dust suction fan 40 to rotate. The dust suction fan 40 sucks the coal powder dust into the dust suction chamber 17 through the dust suction port 14. The setting of the air guide plate 16 and the spiral groove on the air guide plate 16 increase the residence time of the coal powder dust in the dust suction chamber 17. In this process, the coal powder particles with relatively large weight fall downward and fall back on the belt conveyor mechanism 5. The unsettled coal powder dust enters the dust collecting chamber 20 through the ventilation port 18. The setting of the fixed plate 19 makes the coal powder dust flow downward first, and then flow upward through the lower end of the fixed plate 19. In this process, the coal powder dust further settles and falls on the baffle 11. After the coal powder on the baffle 11 reaches a sufficient amount, the spring 10 is compressed under the action of the coal powder gravity, and the coal powder falls back on the belt conveyor mechanism 5 through the return port 12, thereby realizing the purpose of automatically sending the coal powder dust into the belt conveyor mechanism 5 without manual operation.

[0034] Example 3

[0035] On the basis of Example 2, Figure 1-Figure 3 As shown, the filtering dust reduction assembly includes a filter screen 24, which is installed at the left end of the dust collecting chamber 20. The dust collecting chamber 20 is connected to the recovery pipe 38 through the filter screen 24. The recovery pipe 38 is fixedly connected to the left side of the lower end of the storage shell 44. The storage shell 44 is fixedly arranged at the right end of the coal falling shell 21. A storage chamber 26 is arranged inside the storage shell 44. A sliding plate 30 is slidably arranged in the storage chamber 26. A liquid storage chamber is formed between the upper end of the sliding plate 30 and the upper end of the storage chamber 26. A pressure chamber is formed between the lower end of the sliding plate 30 and the lower end of the storage chamber 26. The pressure chamber is connected to the recovery pipe 38.

[0036] A nozzle 23 is installed between the storage chamber 26 and the coal dropping chamber 22, and the nozzle 23 is installed at the right end of the coal dropping shell 21;

[0037] The middle part of the lower end of the air pressure chamber is communicated with the closed chamber 37 through the air delivery pipe 34. The closed chamber 37 is arranged inside the fixed shell 35. The fixed shell 35 is fixedly arranged at the upper end of the dust collection shell 15. A closed plate 36 is slidably arranged in the closed chamber 37. A spring rod 43 is fixedly arranged between the closed plate 36 and the closed chamber 37. A driving rod 42 is fixedly connected to the lower end of the closed plate 36. The driving rod 42 penetrates the lower end of the closed chamber 37 and enters the dust collecting chamber 20 and is rotatably connected to the dust collecting roller 41. The dust collecting roller 41 is in corresponding contact with the filter screen 24.

[0038] A water inlet pump is installed at the water replenishment port at the upper end of the storage shell 44, and the water replenishment port is connected with the storage cavity 26. An air discharge port 31 is penetrated on the right side of the lower end of the storage shell 44, and a blocking plate 32 is rotatably provided in the air discharge port 31. A spring 23 is fixedly provided between the blocking plate 32 and the air discharge port 31. The lower inclined end of the blocking plate 32 contacts the lower horizontal end of the contact block 28, and the lower horizontal end of the contact block 28 is slidably connected with a slide port 1, which is connected with the air discharge port 31. A cavity 27 is provided inside the right end of the storage shell 44, and a contact block 28 is slidably provided in the cavity 27. A plurality of spring rods 29 are fixedly provided between the cavity 27 and the contact block 28. A slide port 2 is connected between the cavity 27 and the upper side of the storage cavity 26, and the slide port 2 is slidably connected with the upper horizontal end of the contact block 28, and the upper horizontal end of the contact block 28 contacts with the sliding plate 30 accordingly.

[0039] The beneficial effects of the above technical solution are:

[0040] After the incompletely settled coal powder dust is filtered by the filter 24, the clean gas enters the recovery pipe 38, and then enters the air pressure chamber through the recovery pipe 38. Water is stored in the storage chamber 26, and the sliding plate 30 is pushed to slide upward along the storage chamber 26 under the action of the gas pressure. During this process, the air pressure value of the air pressure chamber is always less than the elastic force of the spring rod 1 43. The sliding plate 30 pushes the water into the nozzle 23, and the water is atomized and sprayed onto the fallen coal in the coal falling chamber 22 under the action of the pressure of the nozzle 23, so as to appropriately increase the humidity of the fallen coal within the humidity range and reduce the coal powder dust generated during the coal falling process. After the sliding plate 30 moves to the upper end of the storage chamber 26 and cannot move, it just contacts the upper horizontal end of the contact block 28, pushing the contact block 28 to move to the right, and the spring rod 29 compresses During this process, the lower horizontal end of the contact block 28 is out of contact with the lower inclined end of the blocking plate 32. At this time, the blocking plate 32 can rotate, and when the recovery pipe 38 continues to transport gas to the air pressure chamber, the air pressure in the air pressure chamber reaches a certain value and is greater than the elastic force of the spring rod 43. At this time, the gas in the air pressure chamber first enters the closed chamber 37 through the air supply pipe 34, pushing the closed plate 36 to slide downward along the closed chamber 37, and the closed plate 36 drives the driving rod 42 to move downward, and the driving rod 42 drives the dust collecting roller 41 to move downward, the spring rod 43 is compressed, and the elastic force becomes larger, and the dust collecting roller 41 adheres to the dust on the filter screen 24 to clean the filter screen 24. The air pressure value in the air pressure chamber is less than the elastic force of the spring rod 43 and greater than the elastic force of the spring 33. After the force is applied, the gas in the air pressure chamber pushes the blocking plate 32 to rotate, so that the gas is discharged through the air vent 31, so as to avoid excessive air pressure in the storage chamber 26, which may cause damage to the storage shell 44. A distance sensor may be arranged between the contact block 28 and the cavity 27, and the distance sensor is electrically connected to the motor 25 through the controller. The distance sensor detects the compression distance of the spring rod 29, and after the contact block 28 moves to the right and drives the spring rod 29 to compress the target distance, the distance sensor detects that the compression distance of the spring rod 29 reaches the target value, and the distance sensor controls the motor 25 to stop working through a delay of a period of time through the controller, so as to ensure that during this process, the dust collecting roller 41 adheres to the dust on the filter screen 24, and the filter screen 24 is automatically cleaned, without the need for manual cleaning, thus saving energy. In order to save effort, after the control motor 25 stops working, the water inlet pump starts working to replenish water into the storage chamber 26, pressing the sliding plate 30 to move downward, and after the sliding plate 30 is out of contact with the upper horizontal end of the contact block 28, under the elastic action of the spring rod 29, the lower horizontal end of the contact block 28 is re-contacted with the lower inclined end of the blocking plate 32. At this time, the gas in the air pressure chamber can flow back through the recovery pipe 38 and enter the dust collecting chamber 20 through the filter screen 24, further blowing off the coal powder attached to the filter screen 24 and the dust collecting roller 41, so that the coal powder re-enters the dust collecting chamber 20. After the air pressure in the air pressure chamber is reduced, the dust collecting roller 41 returns to its original position under the elastic action of the spring rod 43. The setting of the filtering and dust reduction component can automatically filter and collect the dust that is difficult to settle.And it can reduce the coal dust generated during the coal dropping process.

[0041] Example 4

[0042] On the basis of Example 3, Figure 1-Figure 3 As shown, a coal conveying system includes a dust suction device for the coal conveying system, a guide plate 3 is rotatably provided at the lower left end of the coal dropping chamber 22, a damping spring rod 4 is rotatably provided between the guide plate 3 and the conveying chamber 2, a rotating plate 13 is rotatably provided at the upper right end of the conveying chamber 2, a conveyor belt in the belt conveyor mechanism 5 is in contact with a tensioning wheel 6, the tensioning wheel 6 is rotatably connected to a connecting shaft, the connecting shaft passes through a sliding chamber at the front end of the conveying chamber 2 and is rotatably connected to a connecting block 7, the connecting block 7 is slidably connected to the front end of the conveying shell 1, the connecting block 7 is fixedly connected to a rack 8, the rack 8 is meshed with a gear 9, the gear 9 is fixedly connected to a rotating shaft, the rotating shaft passes through the front end of a return port 12, enters the return port 12 and is fixedly connected to a baffle 11.

[0043] The beneficial effects of the above technical solution are:

[0044] The setting of the guide plate 3 plays a guiding role in the falling coal, further reducing the coal dust generated by the coal falling on the belt conveyor mechanism 5. Since the weight of the coal falling on the belt conveyor mechanism 5 is different at every moment, the belt conveyor mechanism 5 will drive the tensioning wheel 6 to move up and down, and the tensioning wheel 6 drives the connecting block 7 to move up and down through the connecting shaft, and the connecting block 7 drives the rack 8 to move up and down, and the rack 8 drives the gear 9 to rotate. If the force of the belt conveyor mechanism 5 applied to the tensioning wheel 6 is greater than the elastic force of the spring 10, it can drive the baffle 11 to rotate, and the coal powder settled on the auxiliary baffle 11 falls on the belt conveyor mechanism 5. As the tensioning wheel 6 moves up and down, it can drive the baffle 11 to shake up and down, which is more convenient for shaking the coal powder to the belt conveyor mechanism 5. The setting of the rotating plate 13 can scrape the coal material on the belt conveyor mechanism 5, and also prevent the coal powder dust from flowing out from the right end of the conveying chamber 2, thereby improving the sealing of the conveying chamber 2 and reducing the pollution of the coal powder dust to the environment.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dust collecting device for a coal conveying system, characterized in that: The invention comprises a coal dropping shell (21), the lower end of which is fixedly connected to the left side of the upper end of a conveying shell (1), a coal dropping chamber (22) is provided inside the coal dropping shell (21), a conveying chamber (2) is provided at the right end of the conveying shell (1), a belt conveying mechanism (5) is installed in the conveying chamber (2), the coal dropping chamber (22) is communicated with the left side of the conveying chamber (2), a dust collecting shell (15) is fixedly provided in the middle of the upper end of the conveying shell (1), and a dust collecting component and a filtering dust reducing component are connected to the dust collecting shell (15).

2. A dust collecting device for a coal conveying system according to claim 1, characterized in that: The dust collecting assembly comprises a dust collecting chamber (17) arranged inside the right side of the dust collecting shell (15), a plurality of air guide plates (16) are installed between the front and rear ends of the dust collecting chamber (17), a dust collecting port (14) is arranged in the middle of the upper end of the conveying shell (1), and the dust collecting chamber (17) is connected with the conveying chamber (2) through the dust collecting port (14).

3. A dust collecting device for a coal conveying system according to claim 2, characterized in that: A dust collecting chamber (20) is arranged inside the left side of the dust collecting shell (15), the dust collecting chamber (20) and the upper side of the dust collecting chamber (17) are communicated through a vent (18), a return opening (12) is arranged in the middle of the upper end of the conveying shell (1), a fixing plate (19) is fixedly arranged on the right side of the upper end of the dust collecting chamber (20), and the dust collecting chamber (20) is communicated with the conveying chamber (2) through the return opening (12).

4. A dust collecting device for a coal conveying system according to claim 3, characterized in that: The dust collecting assembly further comprises a dust collecting fan (40) arranged on the left side of the upper end of the dust collecting chamber (20); the dust collecting fan (40) is fixedly connected to a driving shaft (39); the driving shaft (39) passes through the upper end of the dust collecting shell (15) and is fixedly connected to a motor (25); and the motor (25) is fixedly arranged at the upper end of the dust collecting shell (15).

5. The dust collecting device for a coal conveying system according to claim 3, characterized in that: A baffle (11) is rotatably arranged in the return opening (12); the baffle (11) is arranged tilted, and a spring (10) is fixedly arranged between the baffle (11) and the return opening (12).

6. A dust collecting device for a coal conveying system according to claim 3, characterized in that: The filtering dust reduction component comprises a filter screen (24), the filter screen (24) is installed at the left end of the dust collecting chamber (20), the dust collecting chamber (20) is connected with a recovery pipe (38) through the filter screen (24), the recovery pipe (38) is fixedly connected with the left side of the lower end of the storage shell (44), the storage shell (44) is fixedly arranged at the right end of the coal falling shell (21), a storage chamber (26) is arranged inside the storage shell (44), a sliding plate (30) is slidably arranged in the storage chamber (26), a liquid storage chamber is formed between the upper end of the sliding plate (30) and the upper end of the storage chamber (26), an air pressure chamber is formed between the lower end of the sliding plate (30) and the lower end of the storage chamber (26), and the air pressure chamber is connected with the recovery pipe (38).

7. A dust collecting device for a coal conveying system according to claim 6, characterized in that: A nozzle (23) is installed between the storage chamber (26) and the coal dropping chamber (22), and the nozzle (23) is installed at the right end of the coal dropping shell (21).

8. The dust collecting device and coal conveying system for a coal conveying system according to claim 6, characterized in that: The middle part of the lower end of the air pressure chamber is communicated with the sealed chamber (37) through an air delivery pipe (34); the sealed chamber (37) is arranged inside a fixed shell (35); the fixed shell (35) is fixedly arranged at the upper end of the dust collecting shell (15); a sealed plate (36) is slidably arranged in the sealed chamber (37); a spring rod (43) is fixedly arranged between the sealed plate (36) and the sealed chamber (37); a driving rod (42) is fixedly connected to the lower end of the sealed plate (36); the driving rod (42) passes through the lower end of the sealed chamber (37) and enters the dust collecting chamber (20) and is rotatably connected to a dust collecting roller (41); the dust collecting roller (41) is in corresponding contact with the filter screen (24).

9. The dust collecting device for a coal conveying system according to claim 6, characterized in that: A water inlet pump is installed at the water replenishment port at the upper end of the storage shell (44), and the water replenishment port is communicated with the storage chamber (26). A gas discharge port (31) is penetrated through the right side of the lower end of the storage shell (44), and a blocking plate (32) is rotatably provided in the gas discharge port (31). A spring 2 (33) is fixedly provided between the blocking plate (32) and the gas discharge port (31). The lower inclined end of the blocking plate (32) contacts the lower horizontal end of the contact block (28), and the lower horizontal end of the contact block (28) is slidably connected to the sliding port 1. The first sliding port is communicated with the air release port (31), a cavity (27) is provided inside the right end of the storage shell (44), a contact block (28) is slidably provided in the cavity (27), a plurality of second spring rods (29) are fixedly provided between the cavity (27) and the contact block (28), a second sliding port is communicated between the cavity (27) and the upper side of the storage cavity (26), the second sliding port is slidably connected with the upper horizontal end of the contact block (28), and the upper horizontal end of the contact block (28) is in corresponding contact with the sliding plate (30).

10. A coal conveying system, comprising a dust collecting device for a coal conveying system according to any one of claims 1 to 9, characterized in that: A guide plate (3) is rotatably provided at the left end of the lower side of the coal dropping chamber (22), a damping spring rod (4) is rotatably provided between the guide plate (3) and the conveying chamber (2), a rotating plate (13) is rotatably provided at the right end of the upper end of the conveying chamber (2), a conveying belt in the belt conveying mechanism (5) contacts with a tensioning wheel (6), the tensioning wheel (6) is rotatably connected with a connecting shaft, the connecting shaft passes through a sliding chamber at the front end of the conveying chamber (2) and is rotatably connected with a connecting block (7), the connecting block (7) is slidably connected with the front end of the conveying shell (1), the connecting block (7) is fixedly connected with a rack (8), the rack (8) is meshed with a gear (9), the gear (9) is fixedly connected with the rotating shaft, the rotating shaft passes through the front end of the return opening (12) and enters the return opening (12) and is fixedly connected with the baffle (11).

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