A dust removal device

Abstract

The present invention provides a dust removal device, which includes a primary dust removal part and a secondary dust removal part. The secondary dust removal part is located above the primary dust removal part. A dust collection structure is provided at the junction between the primary dust removal part and the secondary dust removal part, and a cleaning device is provided inside the primary dust removal part. There is a dust collection device inside the equipment, which can collect the sludge in different dust removal devices together. With the cooperation of the cleaning device, it can realize self-cleaning of the sludge in the equipment, eliminating the need for manual cleaning and having a higher cleaning efficiency. There is a cyclone dust removal part and a wall-collision dust removal part inside the equipment. After the high-temperature pyrolysis gas coming out of the reaction kettle passes through the cyclone dust removal part, the gas flow rate becomes faster, further promoting the contact between the high-temperature pyrolysis gas and the dust baffle, making the dust in the high-temperature pyrolysis gas more likely to adhere to the dust baffle and improving the dust removal efficiency of the wall-collision dust removal part for the high-temperature pyrolysis gas.

Description

Technical Field

[0001] The present invention relates to the technical field of coal processing, and particularly to a dust removal device. Background Art

[0002] Activated carbon is a carbon-based adsorbent material produced from various carbon-containing materials through an appropriate technological process. Due to its huge specific surface area, excellent adsorption performance, and stable physical and chemical properties, it is widely used in many fields of industry, agriculture, military protection, and people's daily life, such as decolorization and refining, water treatment, deep purification of drinking water, gas separation and refining, air purification, removal of toxic and harmful gases, catalysts, and catalyst carriers. And with the continuous development of the economy and the gradual improvement of people's living standards, its application fields and usage amounts are steadily increasing. The proportion of activated carbon produced from woody raw materials in China is gradually decreasing, while the proportion of activated carbon produced from coal is on the rise. Coal-based activated carbon is made mainly from coal, and the physical and chemical properties of the raw coal have a significant impact on the product performance of coal-based activated carbon. Activated carbon produced from ultra-low ash coal, with low impurity content and high added value, has become a new generation of high-quality activated carbon products.

[0003] In the process of processing coal into activated carbon, coal undergoes a pyrolysis reaction in a reaction kettle, generating a large amount of high-temperature pyrolysis gas, which mainly includes hydrogen, methane, ethylene, carbon monoxide, ammonia, benzene, toluene, xylene, and other complex aromatic hydrocarbon compounds. The high-temperature pyrolysis gas coming out of the reaction kettle carries a large amount of dust. This high-temperature pyrolysis gas cannot be directly utilized because the dust in the high-temperature pyrolysis gas easily clogs the pipeline. At the same time, the high-temperature pyrolysis gas containing a large amount of dust cannot be separated according to different boiling points. Therefore, the dust must be reduced to a certain extent so that the subsequent high-temperature pyrolysis gas can be separated according to different boiling points. In addition, the dust in the high-temperature pyrolysis gas generated by the pyrolysis reaction will adhere to the heat exchange devices (such as coal tar coolers, light oil coolers, spray cooling devices, washing and cooling towers), resulting in low thermal efficiency and equipment damage. Also, if dust removal is not carried out, it is very difficult to separate heavy oil, light oil, water, and non-condensable gases. Therefore, in general coal processing, the first thing to do after passing through the reaction kettle is dust removal.

[0004] A composite dust removal device is a dust removal device with multiple dust removal devices inside. After long-term operation, a large amount of sludge will be generated inside each dust removal device. These sludges are generally in powder or block form. If the sludge inside each dust removal device is not discharged in time, it will affect the overall dust removal efficiency of the device. Equipment maintenance personnel need to regularly clean the sludge in each stage of the dust removal equipment, which is very cumbersome. Summary of the Invention

[0005] The object of the present invention is to provide a dust removal device to solve the problems raised in the above-mentioned background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is a dust removal device, which includes a primary dust removal part and a secondary dust removal part. The secondary dust removal part is located above the primary dust removal part. A dust collection structure is provided at the junction of the primary dust removal part and the secondary dust removal part, and a cleaning device is provided inside the primary dust removal part.

[0007] Further, the primary dust removal part is a cyclone dust removal part, and the secondary dust removal part is a wall-collision dust removal part.

[0008] Further, a first chamber is provided inside the primary dust removal part, and a second chamber is provided inside the secondary dust removal part. The dust collection structure includes a partition board, which separates the first chamber and the second chamber. A channel connecting the first chamber and the second chamber is provided between the primary dust removal part and the secondary dust removal part, and the channel penetrates the partition board.

[0009] Further, a rotatable control board is provided on the partition board. The partition board is provided with a first solid part and a first hollow part, and the control board is provided with a second solid part and a second hollow part.

[0010] Further, three first mudguards are arranged in a circumferential array on the outer wall of the channel, and three second mudguards are arranged in a circumferential array on the control board. The first mudguards and the second mudguards are arranged at intervals.

[0011] Further, an arc-shaped rack is provided on the control board, and a motor is also provided in the second chamber. The motor is connected to a gear, and the gear meshes with the rack.

[0012] Further, the rack is provided between two second mudguards. A notch is provided on the first mudguard located between the two second mudguards, and the rack passes through the notch.

[0013] Further, the cleaning device is integrally annular and surrounds the outer side of the first wall body for one week. The cleaning device includes a cleaning chamber. A communication hole is provided on the first wall body, and the communication hole connects the cleaning chamber and the first chamber. A spray head is installed in the cleaning chamber, and the spray head faces the direction of the first chamber.

[0014] Further, a movable sealing door is provided inside the first wall body at the position of the communication hole. The sealing door is controlled to move by a driving device, and the driving device can be selected from gear racks, lead screw sliders, linear motors, and slide rail sliders.

[0015] Further, the driving device includes a linear guide rail located on the outer side of the first wall body and inside the cleaning chamber. A slidable slider is provided on the guide rail. Groove holes are provided on both sides of the first wall body at the position of the driving device. A connecting block extending into the groove holes is provided on the slider, and the connecting block is connected to the sealing door.

[0016] In summary, the beneficial effects of the present invention are as follows: The device provided by the present invention has a dust collection device inside, which can collect the sludge in different dust removal devices together. Coupled with the cleaning device, it can realize self-cleaning of the sludge in the device, eliminating the need for manual cleaning and having higher cleaning efficiency. The device is equipped with an upper sealing cover and a lower sealing cover, which are used to fix and protect the motor and prevent sludge and dust from contacting the motor, thereby extending the service life of the motor. The setting of the first mudguard and the second mudguard can transfer the vast majority of the sludge in the upper dust removal device to the lower dust removal device. The device internally has a cyclone dust removal part and a wall-collision dust removal part. After the high-temperature pyrolysis gas from the reactor passes through the cyclone dust removal part, the gas flow rate increases, further promoting the contact between the high-temperature pyrolysis gas and the dust baffle, making the dust in the high-temperature pyrolysis gas more likely to adhere to the dust baffle and improving the dust removal efficiency of the wall-collision dust removal part for the high-temperature pyrolysis gas. The double-layer device structure design, combined with different sensors and a modern control system, realizes unmanned operation in the factory and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a dust removal device provided by the present invention;

[0018] Figure 2 is Figure 1 an exploded view of the structure of area "A" in

[0019] Figure 3 is Figure 1 a schematic structural diagram of area "A" in

[0020] Figure 4 is Figure 3 a top view of

[0021] Figure 5 is Figure 1 a schematic structural diagram of another state;

[0022] Figure 6 is Figure 5 a top view of

[0023] Figure 7 is Figure 1 a partially enlarged schematic diagram of area "B" in

[0024] Figure 8 is Figure 1 a cross-sectional view taken along the direction of "C-C" in

[0025] Figure 9 is Figure 8 a partially enlarged schematic diagram of area "D" in

[0026] Figure 10It is a schematic diagram of the internal structure of an efficient dust removal device composed of cyclone dust removal and wall-impinging dust removal;

[0027] Figure 11 It is a schematic diagram of the internal structure of a double-layer efficient dust removal device composed of cyclone dust removal and wall-impinging dust removal. Specific implementation manners

[0028] The following further describes the implementation manners of the present invention in detail with reference to the accompanying drawings. It should be noted that the embodiments are only detailed descriptions of the present invention and should not be regarded as limitations on the present invention. All features disclosed in the embodiments of the present invention, or all steps in the disclosed methods or processes, can be combined in any way except for mutually exclusive features and / or steps.

[0029] This embodiment provides a dust removal device, including at least two-stage dust removal devices, which are used to reduce the dust in the high-temperature pyrolysis gas. After long-term operation, a large amount of sludge will be generated inside each dust removal device. This sludge is generally in powder or block form. If the sludge in each dust removal device is not discharged in time, it will affect the overall dust removal efficiency of the device. And a dust removal device provided by the present invention is provided with a dust collection device between adjacent two-stage dust removal devices. The dust collection device can collect the sludge inside the two-stage dust removal devices together. At the same time, the dust removal device is also provided with a cleaning device, which can regularly discharge the sludge collected inside the device, avoiding a large amount of accumulation of sludge inside the device, so as to improve the dust removal efficiency of the device. Specifically, referring to the attached Figure 1 , it includes a primary dust removal part 10 and a secondary dust removal part 20. A gas inlet 11 is provided on the primary dust removal part 10, and a gas outlet 21 is provided on the secondary dust removal part 20. The primary dust removal part 10 and the secondary dust removal part 20 are arranged up and down. A channel 15 is provided between the primary dust removal part 10 and the secondary dust removal part 20. The high-temperature pyrolysis gas entering the primary dust removal device 10 through the gas inlet 11 is subjected to primary dust removal. The sludge generated after the high-temperature pyrolysis gas is subjected to primary dust removal adheres to the inner wall of the primary dust removal device 10 or falls to the bottom of the primary dust removal device 10. Subsequently, the high-temperature pyrolysis gas that has undergone primary dust removal enters the secondary dust removal part 20 through the channel 15 for secondary dust removal. The sludge generated after the high-temperature pyrolysis gas is subjected to secondary dust removal falls to the bottom of the secondary dust removal part 10.

[0030] Preferably, a dust collection structure is provided at the junction position between the primary dust removal part 10 and the secondary dust removal part 20. The dust collection structure can transfer most of the sludge in the upper secondary dust removal part 20 to the lower primary dust removal part 10, which is convenient for centralized treatment of the sludge and also reduces the difficulty of sludge cleaning. Specifically, referring to the attached Figure 1 - Attached Figure 6, the dust collection structure includes a partition plate 80 located at the junction of the primary dust removal part 10 and the secondary dust removal part 20. The partition plate 80 is provided with a first solid part 84 and a first hollow part 81. The partition plate 80 is also provided with a rotatable control plate 82. The control plate 82 is provided with a second solid part 85 and a second hollow part 83. By controlling the movement of the control plate 82 on the partition plate 80, the function can be switched. When the second solid part 85 on the control plate 82 seals the first hollow part 81 on the partition plate 82, and the first solid part 84 on the partition plate 80 seals the second hollow part 83, the sludge in the upper secondary dust removal part 20 cannot be transferred to the lower primary dust removal part 10 at this time; when the control plate 82 moves, the second solid part 85 on it does not completely seal the first hollow part 81. At this time, the first hollow part 81 is communicated with the second hollow part 83, and the sludge in the upper secondary dust removal part 20 can be transferred to the lower primary dust removal part 10 through the communication position.

[0031] Preferably, the channel 15 is a circular channel. The control plate 82 is provided with a round hole 86 matching the channel. The round hole 86 is sleeved on the channel 15 and is rotationally and cooperatively connected with the channel 15. Preferably, a bearing is provided in the round hole 86 of the control plate 82. The inner ring of the bearing is connected to the outer wall of the channel 15, enabling the control plate 82 to freely rotate on the partition plate 80. By rotating the control plate 82, the function of the control plate 82 can be switched. Specifically, both the partition plate 80 and the control plate 82 are circular. The channel 15 is located at the center of the partition plate 80. The first hollow part 81 on the partition plate 82 and the second hollow part 83 on the control plate 82 are both fan-shaped, and the fan angles of these two hollow parts are less than sixty degrees. There are three first hollow parts 81 arranged in a circumferential array on the partition plate 82, and the control plate 82 is provided with three second hollow parts 83.

[0032] Preferably, the control plate 82 is driven by a motor. There are many ways of motor drive, including driving connected to the rotation center, gear-rack drive, gear meshing drive, pulley drive, sprocket drive. In this embodiment, an arc-shaped rack 87 is provided on the control plate 82, and a motor 88 is provided in the device. The motor 88 is connected to a gear 89, and the gear 89 can drive the rack 87 to move, and the rack 87 drives the control plate 82 to move.

[0033] Preferably, refer to the attached Figure 1 and the attached Figure 2, an upper seal cover 70 and a lower seal cover 71 are provided on the motor 88. The upper seal cover 70 and the lower seal cover 71 wrap the motor 88 inside. Only the rotating shaft of the motor 88 extends outside to connect the gear 89. The upper seal cover 70 and the lower seal cover 71 are connected to the device. The main functions of the upper seal cover 70 and the lower seal cover 71 are to fix the motor 88 and prevent sludge and dust from contacting the motor, so as to extend the service life of the motor. Further, in this embodiment, the rotating shaft of the fixed motor 88 passes through the lower seal cover 71 to connect the gear. In order not to interfere with the operation of the motor 88, a through hole is provided on the lower seal cover 71, and the rotating shaft of the motor 88 passes through the through hole. Further, the rotating shaft of the fixed motor 88 is vertically downward, so that the through hole is located at the lower side position of the lower seal cover 71, and it is not easy for sludge and dust to contact the motor 88 through the through hole. Further, a bearing is installed in the through hole, the bearing is sleeved on the rotating shaft of the motor 88, and a dust shield is provided on the bearing.

[0034] Preferably, the upper end surface of the upper seal cover 70 is inclined, and the sludge falling on the upper seal cover 70 will slowly slide down, avoiding a large amount of sludge remaining on the upper seal cover 70.

[0035] Preferably, a first mud guard 72 is provided on the outer wall of the channel 15. Paired with the three first hollow parts 81, there are also three first mud guards 72. The first mud guards 72 are spaced 120 degrees apart. The distance between the lower end of the first mud guard 72 and the upper end of the control board 82 is about 2 mm. When the motor 88 drives the control board 82 to rotate, the first mud guard 72 can block the sludge falling on the second solid part 85 and drop it into the primary dust removal part 10 from the communication position between the first hollow part 81 and the second hollow part 83. In some other embodiments, the distance between the lower end of the first mud guard 72 and the upper end of the control board 82 is about 2 cm. A brush is provided at the lower end of the first mud guard 72, and the brush contacts the upper end of the control board 82. When the motor 88 drives the control board 82 to rotate, the brush can sweep the sludge falling on the second solid part 85 into the primary dust removal part 10 from the communication position between the first hollow part 81 and the second hollow part 83.

[0036] Preferably, a second mud guard 73 is provided on the control board 82. Paired with the three second hollow parts 83, there are also three second mud guards 73. The second mud guards 73 are spaced 120 degrees apart. The three second mud guards 73 and the three first mud guards 72 are arranged at intervals. When the motor 88 drives the control board 82 to rotate, the second mud guard 73 can push the sludge originally on the first solid part 84 into the primary dust removal part 10 from the communication position between the first hollow part 81 and the second hollow part 83. The settings of the first mud guard 72 and the second mud guard 73 can transfer the vast majority of the sludge in the secondary dust removal part 20 to the lower primary dust removal part 10.

[0037] The rack 87 is located between two second fenders 73. Since the three second fenders 73 and the three first fenders 72 are arranged at intervals, a notch 74 is provided on the first fender 72 between the two second fenders 73 that fix the rack 87, and the rack passes through the notch 74 to connect the two second fenders 73. The operation of the motor 88 can be controlled by a computer, a timer, or a limit switch.

[0038] The working principle of the dust collection structure is briefly described below. Refer to the appendix Figure 3 and the appendix Figure 4 . At this time, it is the initial state of the dust collection structure. The first fender 72 and the second fender 73 are combined together. At this time, the second solid part 85 on the control board 82 seals the first hollow part 81 on the partition board 80, and the first solid part 84 on the partition board 80 seals the second hollow part 83. The motor 88 is located near the first fender 72. By starting the motor 88, the motor 88 drives the rack 87 to move through the gear 89, and the rack 87 drives the control board 82 to rotate. The first fender 72 blocks the sludge falling on the second solid part 85 and drops it into the primary dust removal part 10 from the communication position between the first hollow part 81 and the second hollow part 83. The second fender 73 can push the sludge originally on the first solid part 84 into the primary dust removal part 10 from the communication position between the first hollow part 81 and the second hollow part 83. Thus, the sludge in the upper secondary dust removal part 20 is transferred to the lower primary dust removal part. Refer to the appendix Figure 5 and the appendix Figure 6 . When the second fender 73 is about to contact the motor 88 as it rotates with the control board 82, the set timer time is up, or the limit switch is triggered, and the motor reverses, and the dust collection structure gradually returns to the initial state.

[0039] As the dust collection structure works, there will be a situation where a large amount of sludge in the secondary dust removal part 20 drops into the primary dust removal part 10. Therefore, it is generally not suitable to select a dust removal device with a complex internal structure for the primary dust removal 10, such as a wall-collision dust removal device. The primary dust removal 10 preferably selects a dust removal device with a simple internal structure and a large internal space, such as a cyclone dust removal device. Since there will be no situation where sludge falls from other dust removal parts into the secondary dust removal part 20, there are not many restrictions on its selection, and most industrial dust removal methods can be used. The following specifically describes the primary dust removal part 10 and the secondary dust removal part 20: In this embodiment, refer to the appendix Figure 10, the primary dust removal part 10 is a cyclone dust removal part 10, and the secondary dust removal part 20 is a wall-collision dust removal part 20. Among them, the cyclone dust removal part 10 is internally connected to the wall-collision dust removal part 20. The cyclone dust removal part 10 includes a gas inlet 11 for introducing pyrolysis gas, and the wall-collision dust removal part 20 includes a gas outlet 21 for discharging pyrolysis gas. The high-temperature pyrolysis gas first enters the cyclone dust removal part 10 through the gas inlet 11 for primary dust removal, and then the high-temperature and high-speed pyrolysis gas coming out of the cyclone dust removal part 10 enters the wall-collision dust removal part 20 for secondary dust removal. After passing through the cyclone dust removal part 10, the gas flow rate of the high-temperature pyrolysis gas becomes faster, which further promotes the contact between the high-temperature pyrolysis gas and the dust baffle in the wall-collision dust removal part, making the dust in the high-temperature pyrolysis gas more likely to adhere to the dust baffle, and improving the dust removal efficiency of the wall-collision dust removal part 20 for the high-temperature pyrolysis gas.

[0040] The cyclone dust removal part 10 includes a first wall body 12 and a second wall body 13. Both the first wall body 12 and the second wall body 13 are annular walls. The first wall body 12 is wrapped outside the second wall body 13. The area formed between the first wall body 12 and the second wall body 13 is a first chamber 14, and the area wrapped by the second wall body 13 forms a channel 15. The first chamber 14 is connected to the channel 15, and the gas inlet 11 is connected to the first chamber 14. The annular wall of the lower part of the first wall body 12 gradually becomes smaller (i.e., the lower part of the first chamber 14 gradually becomes smaller), presenting a funnel shape 16, and the funnel-shaped 16 part is vertically opposite to the channel 15. Under the action of a fan, the high-temperature pyrolysis gas enters the first chamber 14 from the gas inlet 11. The high-temperature pyrolysis gas contacts and rubs against the inner wall of the first chamber 14, and the dust in the high-temperature pyrolysis gas adheres to the inner wall of the first chamber 14. Since the high-temperature pyrolysis gas continuously enters the first chamber 14 from the gas inlet 11, the high-temperature pyrolysis gas that first enters the first chamber 14 at the beginning will move downward along the inner wall of the first chamber 14 in a circular motion until the high-temperature pyrolysis gas encounters the funnel-shaped 16 part of the first wall body 12. At this time, there is not enough space in the first chamber 14 for the high-temperature pyrolysis gas to continue moving downward. Therefore, the high-temperature pyrolysis gas converges towards the middle and then turns upward and enters the channel 15.

[0041] Preferably, the first wall body 12 and the second wall body 13 are circular annular walls, which can reduce the gas flow rate loss formed by the friction between the first wall body 12, the second wall body 13 and the high-temperature pyrolysis gas.

[0042] Preferably, the gas inlet 11 is tangent to the first wall body 12, which can make the high-temperature pyrolysis gas enter the first chamber 14 tangentially, and can improve the dust removal effect of the cyclone dust removal part 10.

[0043] After the cyclone dust removal section 10 has been working for a long time, a large amount of sludge will accumulate on the inner wall and bottom of the first chamber 14, especially at the funnel-shaped 16 position. At the same time, the sludge in the secondary dust removal section will be collected here through the dust collection structure for treatment. Refer to the appendix Figure 1 and the appendix Figures 7-9 , a cleaning device 50 is provided on the outer side of the first wall body 12. The cleaning device 50 is located below the bottom of the third wall body 22. The cleaning device 50 includes a cleaning chamber 51. The cleaning chamber 51 can communicate with the first chamber 14. A spray head 52 is installed in the cleaning chamber 51. The spray head 52 faces the direction of the first chamber 14. Further, the spray head 52 faces the funnel-shaped 16 part of the first chamber 14 because the vast majority of the sludge adheres to the funnel-shaped 16 position, and this position is the most difficult to clean. The spray head 52 is connected to an external water pump 53 through a water pipe. By spraying water into the first chamber 14 through the spray head 52, the dust in the first chamber 14 can be quickly washed away, and the cleaning effect is very good. For some sludge that is difficult to clean, the water pressure in the spray head 52 can be increased for cleaning.

[0044] Preferably, refer to the appendix Figure 6 , a communication hole 54 is provided on the first wall body 12. The communication hole 54 communicates the cleaning chamber 51 with the first chamber 14. An active sealing door 55 is provided at the position of the communication hole 54 on the inner side of the first wall body 12. The sealing door 55 is controlled by a driving device 56, and the sealing door 55 can be controlled to move up and down. When the sealing door 55 is in the upper position, the cleaning chamber 51 communicates with the first chamber 14; when the sealing door 55 is in the lower position, the cleaning chamber 51 is separated from the first chamber 14. The significance of setting the sealing door 55 is that when the device is working, the cleaning chamber 51 is separated from the first chamber 14, and gas will not flow into the cleaning chamber 51. Therefore, the cleaning chamber 51 will not affect the gas flow in the first chamber 14 during dust removal.

[0045] The driving device 56 is used to control the up and down movement of the sealing door 55. The driving device 56 can be selected from rack and pinion, lead screw slider, linear motor, slide rail slider, which are common linear driving devices in the mechanical field. Specifically, a linear slide rail slider is selected. Refer to the appendix Figures 7-9 , a linear guide rail 58 is provided on the outer side of the first wall body 12 and inside the cleaning chamber 51. A slider 59 that can slide up and down is provided on the guide rail 58. Slot holes 57 are provided on the front and rear sides of the first wall body 12 at the position of the driving device 56. A connecting block 49 that extends into the slot holes 57 is provided on the slider 59. The connecting block 49 is connected to the sealing door 55, so that the sealing door 55 can move along with the driving device 56.

[0046] Preferably, refer to the appendix Figure 8, the cleaning device 50 is integrally annular, surrounding the outer side of the first wall 12 for one week. A plurality of nozzles 52 are arranged in the cleaning chamber 51, generally 4 - 8. The nozzles 52 are arranged in a circumferential array. The arrangement of the plurality of nozzles 52 helps to improve the cleaning efficiency. Further, the sealing door 55 is also annular and is arranged on the inner wall of the first wall 12. In this embodiment, the sealing door 55 is driven by four groups of linear slide rails and sliders, and the slide rails and sliders are also arranged in a circumferential array. The arrangement of multiple groups of slide rails and sliders helps the annular sealing door 55 to move up and down more smoothly.

[0047] Preferably, the nozzles 52 arranged in the cleaning chamber 51 are at an angle, so that the water sprayed by the nozzles 52 can wash down in a circular motion like the high-temperature pyrolysis gas in the first chamber 14, which helps to improve the cleaning effect.

[0048] Preferably, referring to the appendix Figure 10 , a sludge storage tank 30 is arranged at the lower side of the funnel-shaped 16 of the first wall 12. A valve 31 is arranged between the sludge storage tank 30 and the first chamber 14. The valve 31 is used to control the sludge in the first chamber 14 to enter the sludge storage tank 30. By opening the valve 31, the sludge on the inner wall and bottom of the first chamber 14 will enter the sludge storage tank 30. The valve 36 is preferably a flange-type hard-sealed butterfly valve. Since the device includes the cleaning device 50, a large amount of water will be filled in the device during the cleaning process, and this water needs to be discharged. To solve the trouble of removing the sludge storage tank 30 during each cleaning, a water outlet 81 is arranged at the bottom of the sludge storage tank 30, and the water outlet 81 leads to a waste water tank 82.

[0049] The secondary dust removal part will be described in detail below: The wall-collision dust removal part 20 includes a third wall 22. The area enclosed by the third wall 22 is the third chamber 29. The second wall 13 extends into the third wall 22, and the channel 15 connects the first chamber 14 and the third chamber 29. Therefore, the high-temperature pyrolysis gas can enter the third chamber 29 through the channel 15.

[0050] Preferably, the third wall 22 is connected to the first wall 12, that is, the outer contour and inner contour of the third wall 22 are exactly the same as the outer contour and inner contour of the first wall 12. The integrity of the device is stronger, and it is also convenient for installation and transportation. Further, the inner diameter of the second wall 13 is 1 / 4 - 1 / 2 of the inner diameter of the first wall 12.

[0051] In order for the wall-collision dust removal part 20 to have a better ability to filter dust, the wall-collision dust removal part 20 includes a third wall body 22. The area formed by wrapping the third wall body 22 is the third cavity 29. The second wall body 13 extends into the third wall body 22. The channel 15 communicates the first cavity 14 and the third cavity 29. Therefore, the high-temperature pyrolysis gas can enter the third cavity 29 through the channel 15. A dust baffle 23 is provided in the third cavity 29. Generally, there are more than three and no more than eight layers of the dust baffle 23. The angle formed by the dust baffle 23 and the third wall body 22 is 30°-60°. The specific number is determined by the internal size of the third cavity 29 applied in actual production. When the high-temperature pyrolysis gas enters the third cavity 29, the high-temperature pyrolysis gas moves upward along the dust baffle 23 until it reaches the intersection position of the dust baffle 23 and the third wall body 22. Since there is no space to continue moving upward, it then turns back along the dust baffle 23 and continues to move upward through the lower end of the dust baffle 23, contacting the dust baffle 23 on the upper side... The high-temperature pyrolysis gas moves along a Z-shaped route towards the gas outlet 21. During the movement of the high-temperature pyrolysis gas along the dust baffle 23, the high-temperature pyrolysis gas rubs against the dust baffle 23, and the dust in the high-temperature pyrolysis gas will adhere to the dust baffle 23 to form sludge. When there is more sludge adhered to the dust baffle 23, since the gravity of the sludge is greater than the adhesion force between the sludge and the dust baffle 23, the sludge will fall. The sludge on the lowermost dust baffle 23 directly falls to the bottom of the third cavity 29. The sludge on the upper dust baffle 23 first falls onto the lower dust baffle 23, and then, guided by the lower dust baffle 23, finally also falls to the bottom of the third cavity 29.

[0052] Preferably, referring to the attached Figure 11, to improve the safety of the equipment and adapt to modern control processes, the equipment has a double-layer structure, including an outer layer 61 and an inner layer 60. An inert gas is filled between the outer layer 61 and the inner layer 60. Inert gases generally refer to noble gases or some non-reactive gases: Noble gases (rare gases): The elements in Group 18 of the periodic table. Non-reactive gases (inert gases): Gases that do not undergo chemical reactions under certain conditions, including noble gases and may also include carbon dioxide and nitrogen. In this embodiment, nitrogen is preferably filled into the outer layer 61 and the inner layer 60. A first sensor 62 is provided on the equipment. The first sensor 62 is used to detect the temperature, and / or pressure, and / or concentration of combustible gas inside the inner layer 60 of the equipment (the inner layer 60 of the equipment includes inside the cyclone dust removal part 10 or inside the wall-collision dust removal part 20). A second sensor 63 is provided on the equipment. The second sensor 63 is used to detect the temperature, and / or pressure, and / or concentration of combustible gas between the inner layer 60 and the outer layer 61 of the equipment. By comparing the various indices of the first sensor 62 and the second sensor 63, the overall working condition of the equipment and whether there are dangers such as leakage in the equipment can be monitored. Specifically, the first sensor 62 and the second sensor 63 can be temperature sensors, with specific models such as TPR2K5CKTYLC600T1300, etc., or pressure sensors, with specific models such as PT1E1ASG (0 - 1.0MPa), etc., or a combination of multiple of the above sensors. Further, to further improve the degree of automation, achieve unmanned factories, and improve the safety of factories: The first sensor 62 and the second sensor 63 can send signals to the DCS system or the PLC system. The DCS system is the English abbreviation of the Distributed Control System. In the domestic automatic control industry, it is also called the distributed control system. It is a new type of computer control system relative to the centralized control system and has evolved from the centralized control system. The PLC system, also known as the programmable logic controller, is a digital operation and control electronic system designed specifically for use in industrial environments. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting, and arithmetic operations inside it, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

[0053] The signals of the first sensor 62 and the second sensor 63 are read into the CPU through the corresponding module interfaces for processing; such as the temperature, pressure, and combustible gas concentration in the feeding cylinder. On the one hand, the data detected by different sensors, such as pressure data, can be used for cross-verification. In particular, the data of the first sensor 62 and the second sensor 63 are used for cross-verification to confirm whether there is an abnormality in the device and achieve real-time feedback of abnormalities. For example, it is used to determine whether there is a rupture or leakage in the device based on the data of the first sensor 62 and the second sensor 63.

[0054] As described above, it is only the specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any change or replacement that can be thought of without creative labor should be covered within the protection scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. A dust removal device, characterized in that, it includes a primary dust removal part and a secondary dust removal part. The primary dust removal part is a cyclone dust removal part, and the secondary dust removal part is a wall-collision dust removal part. The secondary dust removal part is located above the primary dust removal part. A dust collection structure is provided at the boundary position between the primary dust removal part and the secondary dust removal part, and a cleaning device is provided inside the primary dust removal part; a first chamber is provided inside the primary dust removal part, and a second chamber is provided inside the secondary dust removal part. The dust collection structure includes a partition plate that separates the first chamber and the second chamber. A channel connecting the first chamber and the second chamber is provided between the primary dust removal part and the secondary dust removal part, and the channel penetrates the partition plate; a rotatable control plate is provided on the partition plate. The partition plate has a first solid part and a first hollow part, and the control plate has a second solid part and a second hollow part; three first mudguards are arranged in a circumferential array on the outer wall of the channel, and three second mudguards are arranged in a circumferential array on the control plate. The first mudguards and the second mudguards are arranged at intervals; an arc-shaped rack is provided on the control plate, and a motor is further provided in the second chamber. The motor is connected to a gear, and the gear meshes with the rack; the rack is provided between two second mudguards. A notch is provided on the first mudguard located between the two second mudguards, and the rack passes through the notch; the cyclone dust removal part includes a first wall body and a second wall body. Both the first wall body and the second wall body are annular walls. The first wall body wraps around the outside of the second wall body. The area formed between the first wall body and the second wall body is the first chamber, and the area wrapped by the second wall body forms the channel. The first chamber is connected to the channel. The cleaning device is integrally annular and surrounds the outside of the first wall body for one week. The cleaning device includes a cleaning chamber. A communication hole is provided on the first wall body, and the communication hole connects the cleaning chamber and the first chamber. A spray head is installed in the cleaning chamber, and the spray head faces the direction of the first chamber; a movable sealing door is provided inside the first wall body at the position of the communication hole, and the movement of the sealing door is controlled by a driving device; the driving device includes a linear guide rail located on the outside of the first wall body and inside the cleaning chamber. A slidable slider is provided on the guide rail. Slot holes are provided on both sides of the first wall body at the position of the driving device. A connecting block extending into the slot holes is provided on the slider, and the connecting block is connected to the sealing door.

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