Dust cleaning device for phosphorus compound fertilizer dust falling chamber

Abstract

The application provides a dust cleaning device for a phosphorus compound fertilizer dust falling chamber, relates to the dust removal technical field, and comprises a dust falling chamber box, a working chamber is arranged in the dust falling chamber box, and an exhaust pipe communicated with the working chamber is fixedly installed at the top of the dust falling chamber box. The dust cleaning device for the phosphorus compound fertilizer dust falling chamber is provided with the dust falling chamber box, the exhaust pipe, the air inlet pipe, the isolation plate, the filter cartridge, the plugging assembly, the cleaning piece and the pressure driving structure, when excessive dust is adhered to the filter cartridge and the filter hole is blocked, the dust adhered to the periphery of the filter cartridge can be scraped and removed at the same time, the dust cleaning effect is ensured, the gas entering the filter chamber can be simultaneously reduced, the increase of the air pressure in the filter chamber is slowed down, the accidental explosion is reduced, the dust falling effect is ensured, the explosion risk is reduced, the replacement cycle of the filter bag by workers is reduced, the labor amount of the workers is reduced, and the production efficiency in the preparation process of the phosphorus compound fertilizer is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal, and particularly relates to a dust cleaning device for a phosphorus compound fertilizer dust falling chamber. BACKGROUND

[0002] Phosphorus compound fertilizer, full name phosphorus compound fertilizer, is a kind of fertilizer containing phosphorus element and other one or more plant growth required nutrient elements, the phosphorus element in phosphorus compound fertilizer is very important for the root development of plants and crop growth, can promote the flower bud differentiation and fruit ripening of plants, and has a positive effect on improving the stress resistance of crops and increasing yield.

[0003] A large amount of dust will be generated in the process of making phosphorus compound fertilizer, which may pollute the environment and may affect human health. In the actual preparation process of phosphorus compound fertilizer, the dust removal effect of the bag filter is relatively good, but due to the characteristics of the dust of phosphorus compound fertilizer, the dust has certain corrosiveness, which can easily cause corrosion and damage to the filter bag, affect the dust removal effect, and may also cause dust leakage. It is necessary to check and maintain the new filter bag in a short time, increase the economic cost, affect the dust removal efficiency, in addition, the dust of phosphorus compound fertilizer may have strong adhesion, which may cause the filter bag to be blocked and difficult to clean, and the effect of using pulse to clean the dust on the filter bag may be poor, which may need to be cleaned manually by the staff in a short time or replace the filter bag. SUMMARY

[0004] Based on the technical problems in the background art, the present application provides a dust cleaning device for a phosphorus compound fertilizer dust falling chamber.

[0005] The dust cleaning device for the phosphorus compound fertilizer dust falling chamber provided by the present application comprises a dust falling chamber box, a working cavity is formed in the dust falling chamber box, an exhaust pipe communicated with the working cavity is fixedly installed on the top of the dust falling chamber box, and an air inlet pipe communicated with the working cavity is fixedly installed on one side of the dust falling chamber box.

[0006] A partition plate is fixedly installed in the working cavity, the working cavity is divided into an exhaust cavity and a filter cavity arranged in an up-down manner by the partition plate, a plurality of filter cylinders are fixedly installed on the bottom of the partition plate, the top opening of the filter cylinder is communicated with the exhaust cavity, a plurality of filter holes are formed in the outer periphery of the filter cylinder, and a cleaning piece is rotatably installed on the outer periphery of the filter cylinder.

[0007] A plugging assembly is further installed on the dust falling chamber box, and the plugging assembly can plug the air inlet pipe.

[0008] A pressure driving structure is installed in the filter cavity, when the air pressure in the filter cavity increases, the pressure driving structure can simultaneously drive the cleaning piece to scrape the outer periphery of the filter cylinder and the plugging assembly to plug the air inlet pipe.

[0009] Preferably, the cleaning member comprises cleaning cylinders; the number of the cleaning cylinders is the same as that of the filter cylinders and is arranged one by one, the cleaning cylinders are rotatably sleeved on the outer periphery of the filter cylinders, the inner diameter of the cleaning cylinders is the same as the outer diameter of the filter cylinders, and a plurality of large openings are formed in the cleaning cylinders.

[0010] Preferably, the blocking assembly comprises a communication pipeline, a blocking plate and a jacking spring; the communication pipeline is fixedly installed on the air inlet pipe, a movement groove in communication with the air inlet pipe is formed in the communication pipeline, the blocking plate is slidably installed in the movement groove, the blocking plate can extend into the air inlet pipe and block the air inlet pipe, and the jacking spring is installed in the movement groove and used to drive the blocking plate to slide and reset in the movement groove.

[0011] Preferably, the pressure driving structure comprises a movable plate and a piston block; the movable plate is slidably installed in the filter chamber, the movable plate can divide the filter chamber into a sealing chamber and a dust chamber arranged in an up-down manner, a plurality of perforations adapted to the cleaning cylinders are formed in the movable plate, the number of the perforations is the same as that of the cleaning cylinders and is arranged one by one, and a section of the filter cylinder and the cleaning cylinder located in the sealing chamber is a closed section.

[0012] The end of the communication pipeline away from the air inlet pipe is fixedly connected with the outer wall of the dust falling chamber box, the other end of the movement groove is open and in communication with the sealing chamber, a limiting sliding groove adapted to the piston block is formed in the movement groove, the piston block is slidably installed in the limiting sliding groove, the top end of the blocking plate is fixedly connected with the bottom surface of the piston block, the width of the piston block is greater than that of the blocking plate, and the jacking spring is located in the limiting sliding groove and abuts against the bottom inner wall of the limiting sliding groove and the bottom surface of the piston block at two ends thereof.

[0013] Preferably, the pressure driving structure further comprises a transmission gear, a driving gear and a pressing driving assembly; the transmission gear is sleeved on the cleaning cylinder and located in the sealing chamber, and the driving gear is rotatably installed on the bottom surface of the isolation plate and engaged with the transmission gear.

[0014] When the movable plate slides in the filter chamber, the pressing driving assembly can convert the lifting movement of the movable plate into the rotary movement of the driving gear.

[0015] Preferably, the pressing driving assembly comprises a driving rod, a telescopic cylinder, a descending spring and a sliding shaft; the driving rod is rotationally installed on the bottom surface of the isolation plate, the driving gear is sleeved on the driving rod, the telescopic cylinder is fixedly installed on the top surface of the movable plate, the top end of the telescopic cylinder is provided with a telescopic hole in sliding fit with the driving rod, the descending spring is located in the telescopic hole, the two ends of the descending spring are respectively abutted against the bottom end of the driving rod and the bottom inner wall of the telescopic hole, the sliding shaft is fixedly installed on the inner wall of the telescopic hole, and the outer periphery of the driving rod is provided with a spiral sliding groove in sliding fit with the sliding shaft; the spiral sliding groove is spirally wound on the outer periphery of the driving rod.

[0016] Preferably, one end of the cleaning cylinder located in the sealed chamber is provided with an air inlet hole in the outer periphery, the inner wall of the cleaning cylinder is provided with an exhaust passage in communication with the air inlet hole, and the cleaning cylinder is provided with a blowing structure;

[0017] The blowing structure can blow the gas into the exhaust passage through the air inlet hole, and when the cleaning cylinder is larger than the outer periphery of the filter cylinder for scraping, the gas is blown on the outer periphery of the filter cylinder through the exhaust passage.

[0018] Preferably, the blowing structure is located in the sealed chamber, and the blowing structure comprises a fixed ring, an annular corrugated air bag and a movable extrusion ring; the fixed ring is sleeved on the outer periphery of the cleaning cylinder, the fixed ring is fixedly connected with the cleaning cylinder, the annular corrugated air bag is sleeved on the outer periphery of the cleaning cylinder, the top end of the annular corrugated air bag is fixedly connected with the fixed ring, the annular corrugated air bag is in communication with the air inlet hole, the movable extrusion ring is sleeved on the cleaning cylinder, the bottom end of the annular corrugated air bag is fixedly connected with the top surface of the movable extrusion ring, and the fixed ring and the movable extrusion ring are provided with a reset spring therebetween.

[0019] The dust cleaning device for the dust falling chamber of the phosphate compound fertilizer has the following beneficial effects: through the setting of the dust falling chamber box, the exhaust pipe, the air inlet pipe, the isolation plate, the filter cylinder, the plugging assembly, the cleaning piece and the pressure driving structure, when too much dust adheres to the filter cylinder and causes the filter hole to be blocked, the dust adhered to the outer periphery of the filter cylinder can be scraped at the same time, the dust cleaning effect is ensured, the gas entering the filter chamber can be reduced at the same time, the increase of the air pressure in the filter chamber is slowed down, the accidental explosion is reduced, the dust falling effect is ensured, the explosion risk is reduced, the replacement cycle of the filter bag by the workers is reduced, the labor amount of the workers is reduced, and the production efficiency during the preparation of the phosphate compound fertilizer is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the dust cleaning device for the dust falling chamber of the phosphate compound fertilizer.

[0021] Figure 2 It is a sectional view of the dust cleaning device for the dust falling chamber of the phosphate compound fertilizer.

[0022] Figure 3 A structure diagram of a filter cylinder in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0023] Figure 4 A structure diagram of a cleaning cylinder in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0024] Figure 5 A perspective sectional view of a cleaning cylinder in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0025] Figure 6 A structure sectional view of a pressure driving structure driving a rotating part of a cleaning cylinder and a blowing structure in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0026] Figure 7 A structure sectional view of a driving rod, an extension cylinder, a descending spring and a sliding shaft in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0027] Figure 8 A position diagram of a blocking plate in a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided;

[0028] Figure 9 A perspective structure sectional view of a dust cleaning device for a phosphate compound fertilizer dust falling chamber according to the present application is provided.

[0029] In the figure: 1, dust falling chamber box; 2, exhaust pipe; 3, air inlet pipe; 4, isolation plate; 5, filter cylinder; 6, cleaning cylinder; 7, communication pipeline; 8, blocking plate; 9, lifting spring; 10, movable plate; 11, piston block; 12, transmission gear; 13, driving gear; 14, driving rod; 15, extension cylinder; 16, descending spring; 17, sliding shaft; 18, spiral chute; 19, air inlet hole; 20, exhaust passage; 21, fixed ring; 22, annular corrugated air bag; 23, movable extrusion ring. DETAILED DESCRIPTION

[0030] REFERENCE Figures 1-9The application provides a dust cleaning device for a phosphorus compound fertilizer dust falling chamber, which comprises a dust falling chamber box 1, a working chamber is formed in the dust falling chamber box 1, filtered dust is discharged from a hopper opening at the bottom of the dust falling chamber box 1, an exhaust pipe 2 in communication with the working chamber is fixedly installed at the top of the dust falling chamber box 1, and an air inlet pipe 3 in communication with the working chamber is fixedly installed at one side of the dust falling chamber box 1; a partition plate 4 is fixedly installed in the working chamber, the partition plate 4 can divide the working chamber into an exhaust chamber and a filtering chamber arranged in a vertical mode, a plurality of filtering cylinders 5 are fixedly installed at the bottom of the partition plate 4, the top opening of the filtering cylinder 5 is in communication with the exhaust chamber, and a plurality of filter holes are formed in the outer periphery of the filtering cylinder 5. In actual use, dust-containing air is injected into the filtering chamber through the air inlet pipe 3, then filtered through the filtering cylinder 5, the filtered air enters the exhaust chamber, and then is discharged through the exhaust pipe 2 at the top. However, due to the characteristics of the phosphorus compound fertilizer dust, the phosphorus compound fertilizer dust has certain viscosity and corrosion, dust removal operation is performed by using a filter bag, the filter bag is corroded too fast, the service life of the filter bag is easily reduced, the filter bag may be corroded and damaged, the dust removal effect is affected, meanwhile, the phosphorus compound fertilizer dust has certain viscosity and is adhered to the filter bag, the dust on the filter bag cannot be cleaned well by simply relying on a pulse system, therefore, the filtering cylinder 5 made of metal material or corrosion-resistant plastic is designed, the service life of the filtering cylinder 5 is ensured, the filter bag is replaced in a short period, the labor of workers is reduced, and the dust removal efficiency is affected due to replacement of the filter bag is reduced; because the phosphorus compound fertilizer dust has certain viscosity, the dust is adhered to the outer periphery of the filtering cylinder 5 during the filtering process, the filter holes on the filtering cylinder 5 are blocked, the pressure in the filtering chamber is increased, and an accident may occur, therefore, the dust adhered to the filtering cylinder 5 needs to be cleaned, and the air inlet needs to be controlled to reduce continuous increase of the pressure in the filtering chamber (although an explosion pressure relief device is installed on the dust falling chamber box 1, before the set value of the explosion pressure relief device is reached, the air inlet can be cut off to reduce the risk of explosion due to continuous increase of the air pressure in the filtering chamber).

[0031] The outer periphery of the filter cartridge 5 is rotatably provided with a cleaning member capable of scraping the outer periphery of the filter cartridge 5, and the dust falling chamber box 1 is further provided with a blocking assembly capable of blocking the air inlet pipe 3; a pressure driving structure is arranged in the filter chamber, when the air pressure in the filter chamber increases, the pressure driving structure can simultaneously drive the cleaning member to scrape the outer periphery of the filter cartridge 5 and drive the blocking assembly to block the air inlet pipe 3; when a certain amount of dust adheres to the outer periphery of the filter cartridge 5, the adhered dust will affect the air permeability of the filter hole, so that the air pressure in the filter chamber increases, the cleaning member is driven by the pressure driving structure to scrape the outer periphery of the filter cartridge 5, and the dust adhered to the outer periphery of the filter cartridge 5 is scraped down, so that the filter hole is exposed, the filter hole is blocked, so as to ensure the ventilation condition, the air containing dust enters the exhaust chamber through the filter hole, so as to reduce the pressure in the filter chamber and ensure the dust removal effect; at the same time, the pressure driving structure also drives the blocking assembly to control the air inlet amount of the air inlet pipe 3, with the increase of the air pressure in the filter chamber, the blocking assembly gradually reduces the air inlet amount of the air inlet pipe 3, so as to gradually control the pressure of the filter chamber, reduce the explosion caused by the increase of the pressure, and gradually increase the air inlet amount of the air inlet pipe 3 with the decrease of the pressure, so as to ensure the dust removal efficiency.

[0032] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the cleaning member comprises a cleaning cylinder 6; the number of the cleaning cylinder 6 is the same as that of the filter cartridge 5 and is arranged one by one, the cleaning cylinder 6 is rotatably sleeved on the outer periphery of the filter cartridge 5, the inner diameter of the cleaning cylinder 6 is the same as the outer diameter of the filter cartridge 5, a plurality of large openings are formed in the cleaning cylinder 6, and the filter cartridge 5 is provided with filter holes on the outer periphery, as shown in Figure 3 , the filter holes are divided into a plurality of areas, in the initial state, the scraping position on the cleaning cylinder 6 coincides with the non-filtering area on the filter cartridge 5.

[0033] As shown in Figure 2 and Figure 6 , the pressure driving structure comprises a movable plate 10 and a piston block 11; the movable plate 10 is slidably arranged in the filter chamber, the movable plate 10 can divide the filter chamber into a sealing chamber and a dust chamber arranged in an upper and lower manner, a plurality of through holes are formed in the movable plate 10 and are matched with the cleaning cylinder 6, the number of the through holes is the same as that of the cleaning cylinder 6 and is arranged one by one, a section of the filter cartridge 5 and the cleaning cylinder 6 in the sealing chamber is a closed section, a sealing treatment such as a sealing ring is arranged between the cleaning cylinder 6 and the movable plate 10, and the movable plate 10, the isolation plate 4 and the dust falling chamber box 1 form a relatively closed sealing chamber, when the air pressure in the dust chamber increases, the gas will lift the movable plate 10, so that the movable plate 10 moves upward, and when the movable plate 10 moves upward, the volume of the dust chamber will increase, so that the air pressure in the dust chamber decreases.

[0034] As Figure 1 , Figure 2 , Figure 8 and Figure 9 shown, the blocking assembly includes a communication pipe 7, a blocking plate 8 and a lifting spring 9; the communication pipe 7 is fixedly installed on the air inlet pipe 3, a movement groove is formed in the communication pipe 7 and communicates with the air inlet pipe 3, the blocking plate 8 is slidably installed in the movement groove, the blocking plate 8 can extend into the air inlet pipe 3 and block the air inlet pipe 3, the lifting spring 9 is installed in the movement groove and is used to drive the blocking plate 8 to slide and reset in the movement groove, one end of the communication pipe 7 away from the air inlet pipe 3 is fixedly connected with the outer wall of the dust falling chamber box 1, the other end of the movement groove is open and communicates with the sealing chamber, a limiting sliding groove matched with the piston block 11 is formed in the movement groove, the piston block 11 is slidably installed in the limiting sliding groove, the top end of the blocking plate 8 is fixedly connected with the bottom surface of the piston block 11, the width of the piston block 11 is greater than that of the blocking plate 8, the lifting spring 9 is located in the limiting sliding groove and the two ends of the lifting spring 9 respectively abut against the bottom inner wall of the limiting sliding groove and the bottom surface of the piston block 11, when the dust adhered to the filter hole of the filter cylinder 5 covers and blocks the filter hole, the air pressure in the dust chamber will gradually increase, the movable plate 10 will gradually move upward, the volume of the dust chamber will become larger, the air pressure in the dust chamber will be reduced to a certain extent, at the same time, the volume of the sealing chamber will be compressed by the movable plate 10, the air pressure in the sealing chamber will increase, the gas in the sealing chamber will push the piston block 11 to slide downward in the limiting sliding groove, the piston block 11 will push the blocking plate 8 to descend synchronously, the blocking plate 8 will gradually enter the air inlet pipe 3 and gradually reduce the air inlet amount in the air inlet pipe 3, so as to slow down the increase of the air pressure in the dust chamber, at this time, the dust removal work will not stop, when the blocking plate 8 has not completely blocked the air inlet pipe 3, the cleaning cylinder 6 has already scraped off the dust on the outer periphery of the filter cylinder 5, so as to ensure the air permeability and filtering effect of the filter hole, when the dust falling chamber box 1 is completely blocked and the filter cylinder 5 cannot solve the blockage, the blocking plate 8 will be driven to completely block the air inlet pipe 3, so as to reduce or even eliminate the air entering the dust falling chamber box 1, to avoid the increase of the air pressure in the dust falling chamber box 1 and the explosion accident, when the air pressure in the dust chamber returns to normal, the piston block 11 will be lifted by the rebounding action of the lifting spring 9, then the piston block 11 will drive the blocking plate 8 to rise and open the air inlet pipe 3, so as to ensure the air inlet amount and the efficiency of the dust removal work.

[0035] As Figure 2 , Figure 6 and Figure 7As shown in , the pressure drive structure also includes a transmission gear 12, a driving gear 13 and a pressing drive assembly; the transmission gear 12 is sleeved on the cleaning cylinder 6, and the transmission gear 12 is located in the sealed chamber, the driving gear 13 is rotatably mounted on the bottom surface of the isolation plate 4, and the driving gear 13 is engaged with the transmission gear 12. When the movable plate 10 slides in the filter chamber, the pressing drive assembly can convert the lifting of the movable plate 10 into the rotational motion of the driving gear 13. The pressing drive assembly includes a driving rod 14, a telescopic cylinder 15, a descending spring 16 and a sliding shaft 17; the driving The rod 14 is rotatably mounted on the bottom surface of the isolation plate 4, the driving gear 13 is sleeved on the driving rod 14, the telescopic cylinder 15 is fixedly mounted on the top surface of the movable plate 10, and the top of the telescopic cylinder 15 is provided with a telescopic hole that slides with the driving rod 14. The descending spring 16 is located in the telescopic hole. The two ends of the descending spring 16 respectively abut against the bottom end of the driving rod 14 and the bottom inner wall of the telescopic hole. The sliding shaft 17 is fixedly mounted on the inner wall of the telescopic hole. The outer periphery of the driving rod 14 is provided with a spiral slide 18 that slides with the slide shaft 17. The spiral slide 18 is spirally wound around the driving rod 14. On the periphery, when the air pressure in the dust chamber increases, the movable plate 10 moves upward, and the movable plate 10 will drive the telescopic cylinder 15 to rise synchronously. The sliding shaft 17 on the inner wall of the telescopic hole on the telescopic cylinder 15 rises synchronously, and the sliding shaft 17 will slide along the spiral chute 18. Since the position of the telescopic cylinder 15 and the sliding shaft 17 cannot rotate, the driving rod 14 rotates, and the rotating driving rod 14 drives the active gear 13 to rotate. The rotating active gear 13 drives the transmission gear 12 to follow the rotation, and the rotating transmission gear 12 drives the cleaning cylinder 6 to rotate on the filter cylinder 5, and then the rotating cleaning cylinder 6. The dust adhering to the periphery of the filter cartridge 5 is scraped off. After the dust on the filter cartridge 5 is scraped off, the gas in the dust chamber can pass through the filter holes normally, and the air pressure in the dust chamber gradually decreases. Under the rebound effect of the descending spring 16 and the action of gravity, the movable plate 10 slides downward and resets. After the movable plate 10 is reset, the positions of the telescopic cylinder 15 and the sliding shaft 17 are also restored to their original positions, and the driving rod 14 is also reset, so that the scraping part of the cleaning cylinder 6 and the non-filtering area of ​​the periphery of the filter cartridge 5 coincide with each other, thereby reducing the occurrence of covering the filter holes and affecting the filtering effect.

[0036] In actual situations, after the cleaning cylinder 6 scrapes off the dust adhering to the outer periphery of the filter cylinder 5, the dust stuck in the filter holes cannot be scraped off. The dust in the filter holes is not carried away by the flowing air, which will also affect the ventilation effect of the filter holes. Therefore, the dust in the filter holes also needs to be cleaned, and the following design is provided.

[0037] like Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown in the figure, the cleaning cylinder 6 is provided with an air inlet hole 19 at one end of the outer periphery in the sealed chamber, the inner wall of the cleaning cylinder 6 is provided with an exhaust passage 20 communicated with the air inlet hole 19, and a blowing structure is installed on the cleaning cylinder 6, which can blow gas into the exhaust passage 20 through the air inlet hole 19, when the cleaning cylinder 6 is larger than the outer periphery of the filter cylinder 5, the gas is blown on the outer periphery of the filter cylinder 5 through the exhaust passage 20, the blowing structure is located in the sealed chamber, and the blowing structure comprises a fixed ring 21, an annular corrugated air bag 22 and a movable extrusion ring 23; the fixed ring 21 is sleeved on the outer periphery of the cleaning cylinder 6, and the fixed ring 21 is fixedly connected with the cleaning cylinder 6; the annular corrugated air bag 22 is sleeved on the outer periphery of the cleaning cylinder 6, the top end of the annular corrugated air bag 22 is fixedly connected with the fixed ring 21, the annular corrugated air bag 22 is communicated with the air inlet hole 19, the movable extrusion ring 23 is sleeved on the cleaning cylinder 6, the annular corrugated air bag 22 and the movable extrusion ring 23 are both slid on the cleaning cylinder 6, the bottom end of the annular corrugated air bag 22 is fixedly connected with the top surface of the movable extrusion ring 23, and a reset spring is arranged between the fixed ring 21 and the movable extrusion ring 23; in the process of the lifting of the movable plate 10, the movable plate 10 pushes the movable extrusion ring 23 to synchronously lift, the fixed ring 21 is fixed on the outer periphery of the cleaning cylinder 6, so that the gap between the fixed ring 21 and the movable extrusion ring 23 becomes smaller, thereby extruding the annular corrugated air bag 22 therebetween, and the gas in the annular corrugated air bag 22 is compressed to enter the exhaust passage 20 through the air inlet hole 19; when the cleaning cylinder 6 is rotated to the filter area of the filter cylinder 5, the filter hole and the exhaust passage 20 are communicated, the gas in the annular corrugated air bag 22 is extruded to be discharged from the filter hole, and the dust stuck in the filter hole is knocked down by the impact of the gas, thereby completing the cleaning of the dust in the filter hole.

[0038] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dust removal device for a phosphate fertilizer dust reduction chamber, characterized in that: The dust removal chamber box (1) comprises a dust removal chamber box (1), wherein a working chamber is provided in the dust removal chamber box (1), an exhaust pipe (2) communicating with the working chamber is fixedly installed on the top of the dust removal chamber box (1), and an air intake pipe (3) communicating with the working chamber is fixedly installed on one side of the dust removal chamber box (1); An isolation plate (4) is fixedly installed in the working chamber, and the isolation plate (4) can separate the working chamber into an exhaust chamber and a filter chamber arranged in an upper and lower manner. A plurality of filter cartridges (5) are fixedly installed at the bottom of the isolation plate (4), and the top opening of the filter cartridge (5) is communicated with the exhaust chamber. A plurality of filter holes are provided on the outer periphery of the filter cartridge (5). A cleaning member is rotatably installed on the outer periphery of the filter cartridge (5), and the cleaning member can scrape the outer periphery of the filter cartridge (5); A blocking component is also installed on the dust suppression chamber box (1), and the blocking component is capable of blocking the air inlet pipe (3); A pressure-driven structure is installed in the filter chamber. When the air pressure in the filter chamber increases, the pressure-driven structure can simultaneously drive the cleaning element to scrape the periphery of the filter cartridge (5) and the blocking component to block the air inlet pipe (3). The cleaning member comprises a cleaning cylinder (6); the number of the cleaning cylinders (6) is the same as the number of the filter cylinders (5) and they are arranged in a one-to-one correspondence; the cleaning cylinders (6) are rotatably sleeved on the outer circumference of the filter cylinder (5); the inner diameter of the cleaning cylinder (6) is the same as the outer diameter of the filter cylinder (5); and a plurality of large openings are provided on the cleaning cylinder (6); The blocking assembly includes a connecting pipe (7), a blocking plate (8) and a lifting spring (9); the connecting pipe (7) is fixedly mounted on the air intake pipe (3); a motion groove communicating with the air intake pipe (3) is provided in the connecting pipe (7); the blocking plate (8) is slidably mounted in the motion groove; the blocking plate (8) can extend into the air intake pipe (3) and block the air intake pipe (3); the lifting spring (9) is mounted in the motion groove; the lifting spring (9) is used to drive the blocking plate (8) to slide and reset in the motion groove; The pressure drive structure includes a movable plate (10) and a piston block (11); the movable plate (10) is slidably installed in the filter chamber, and the movable plate (10) can separate the filter chamber into a sealed chamber and a dust chamber arranged in an upper and lower manner. The movable plate (10) is provided with a perforation adapted to the cleaning cylinder (6), and the number of the perforations is the same as the number of the cleaning cylinder (6) and is arranged in a one-to-one correspondence. The section of the filter cylinder (5) and the cleaning cylinder (6) located in the sealed chamber is a closed section; One end of the communicating pipe (7) away from the air inlet pipe (3) is fixedly connected to the outer wall of the dust suppression chamber box (1), and the other end opening of the movement groove is connected to the sealed chamber. A limiting slide groove adapted to the piston block (11) is provided in the movement groove, and the piston block (11) is slidably installed in the limiting slide groove. The top of the blocking plate (8) is fixedly connected to the bottom surface of the piston block (11), and the width of the piston block (11) is greater than the width of the blocking plate (8). The lifting spring (9) is located in the limiting slide groove, and the two ends of the lifting spring (9) respectively abut against the bottom inner wall of the limiting slide groove and the bottom surface of the piston block (11); The pressure drive structure further comprises a transmission gear (12), a driving gear (13) and a pressing drive assembly; the transmission gear (12) is sleeved on the cleaning cylinder (6), and the transmission gear (12) is located in the sealed chamber, the driving gear (13) is rotatably mounted on the bottom surface of the isolation plate (4), and the driving gear (13) is meshed with the transmission gear (12); When the movable plate (10) slides in the filter chamber, the pressing drive assembly can convert the lifting of the movable plate (10) into the rotational motion of the driving gear (13).

2. A dust removal device for a phosphate fertilizer dust reduction chamber according to claim 1, characterized in that: The pressing drive assembly includes a driving rod (14), a telescopic cylinder (15), a descending spring (16) and a sliding shaft (17); the driving rod (14) is rotatably mounted on the bottom surface of the isolation plate (4); the active gear (13) is sleeved on the driving rod (14); the telescopic cylinder (15) is fixedly mounted on the top surface of the movable plate (10); the top end of the telescopic cylinder (15) is provided with a telescopic hole that slides with the driving rod (14); the descending spring (16) is located in the telescopic hole; the two ends of the descending spring (16) are respectively against the bottom end of the driving rod (14) and the bottom inner wall of the telescopic hole; the sliding shaft (17) is fixedly mounted on the inner wall of the telescopic hole; the outer periphery of the driving rod (14) is provided with a spiral groove (18) that slides with the sliding shaft (17); the spiral groove (18) is spirally wound around the outer periphery of the driving rod (14).

3. A dust removal device for a phosphate fertilizer dust reduction chamber according to claim 2, characterized in that: An air inlet hole (19) is provided on the outer periphery of one end of the cleaning cylinder (6) located in the sealed chamber, an exhaust passage (20) communicating with the air inlet hole (19) is provided on the inner wall of the cleaning cylinder (6), and an air blowing structure is installed on the cleaning cylinder (6); The blowing structure can blow gas into the exhaust channel (20) through the air inlet hole (19); when the cleaning cylinder (6) is larger than the outer periphery of the filter cylinder (5), the gas is blown onto the outer periphery of the filter cylinder (5) through the exhaust channel (20).

4. A dust removal device for a phosphate fertilizer dust reduction chamber according to claim 3, characterized in that: The blowing structure is located in the sealed chamber, and the blowing structure includes a fixed ring (21), an annular corrugated airbag (22) and a movable extrusion ring (23); the fixed ring (21) is sleeved on the outer periphery of the cleaning cylinder (6), the fixed ring (21) is fixedly connected to the cleaning cylinder (6), the annular corrugated airbag (22) is sleeved on the outer periphery of the cleaning cylinder (6), the top end of the annular corrugated airbag (22) is fixedly connected to the fixed ring (21), the annular corrugated airbag (22) is communicated with the air inlet (19), the movable extrusion ring (23) is sleeved on the cleaning cylinder (6), the bottom end of the annular corrugated airbag (22) is fixedly connected to the top surface of the movable extrusion ring (23), and a reset spring is provided between the fixed ring (21) and the movable extrusion ring (23).

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