Baghouse dust collector for use in automotive cast iron parts manufacturing workshops

Abstract

This invention discloses a baghouse dust collector for use in automotive cast iron parts manufacturing workshops, relating to the field of baghouse dust collectors. It includes: a housing and an air inlet pipe installed on the left side of the housing; an installation plate fixedly installed on the inner side of the housing; multiple installation holes on the surface of the installation plate; a filter bag body installed inside the installation holes; an inner support frame provided on the inner side of the filter bag body; a blowpipe provided at the top of the filter bag body; an exhaust pipe installed on the right side of the housing; and two dust hoppers installed at the bottom of the housing. It also includes: a discharge mechanism for cleaning dust from the surface of the filter bag body; the discharge mechanism includes a sliding diversion pipe and nozzles. Through the discharge mechanism, this invention enables multiple vertically and equidistantly distributed nozzles on both sides of the diversion pipe to blow air onto the inner side of the filter bag body, facilitating the vibration of dust near the top of the filter bag body. It also allows the nozzles to move downwards, achieving segmented blowing of the filter bag body, thereby achieving comprehensive dust removal.

Description

Technical Field

[0001] This invention relates to the field of baghouse dust collectors, specifically to a baghouse dust collector for use in automotive cast iron parts processing and manufacturing workshops. Background Technology

[0002] The automotive cast iron parts processing and manufacturing workshop is a core link in the automotive parts production system. It is a production site that is specifically responsible for producing key cast iron parts such as engine blocks, cylinder heads, brake discs, wheel hubs, and gearbox housings from raw materials such as pig iron and scrap steel through processes such as smelting, casting, cooling, sand removal, and machining. The casting process generates a large amount of production dust. In the automotive cast iron parts processing and manufacturing workshop, dust removal is not only an environmental protection requirement, but also a necessary measure to ensure production safety, employee health, and equipment operation.

[0003] In automotive cast iron parts manufacturing workshops, baghouse dust collection is the most commonly used and efficient dry dust collection technology. It uses the filtration effect of fiber fabric to intercept dust in dusty gas. As dust accumulates on the inside of the bag, it clumps and adheres to the bag, affecting air circulation. Existing baghouse dust collectors use high-pressure spray guns to blow air through the top opening of the bag, using the impact force to shake off the dust on the bag surface. However, the high-pressure airflow blows from top to bottom, and the dust at the top of the bag receives the least vibration, resulting in dust accumulation at the top of the bag and affecting normal air circulation. Summary of the Invention

[0004] The purpose of this invention is to provide a bag filter dust collector for use in automotive cast iron parts processing and manufacturing workshops, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A baghouse dust collector for use in automotive cast iron parts manufacturing workshops includes: a housing and an air inlet pipe fixedly installed on the left side of the housing; a mounting plate fixedly installed on the inner side of the housing; multiple mounting holes arranged in a rectangular array on the surface of the mounting plate; a filter bag body installed inside the mounting holes; an inner support frame provided on the inner side of the filter bag body; a blowpipe provided at the top of the filter bag body; an exhaust pipe fixedly installed on the right side of the housing; and two symmetrically distributed dust hoppers fixedly installed at the bottom of the housing; further comprising: a discharge mechanism for cleaning dust from the surface of the filter bag body; the discharge mechanism being installed inside the blowpipe; and the discharge mechanism including a slidingly mounted... The inner side of the blowpipe has a diversion pipe, on both sides of which are fixedly installed multiple nozzles distributed vertically at equal intervals. The nozzles can clean the dust on the surface of the filter bag body in segments. A swirl spray mechanism is used to increase the spray angle of the nozzles. The swirl spray mechanism is installed at the top of the diversion pipe and includes a collar set at the top of the diversion pipe. The collar allows the nozzles to rotate and spray the filter bag body. A pushing mechanism is used to push down the dust accumulated inside the ash hopper. The pushing mechanism is installed inside the ash hopper and includes a moving disc set inside the ash hopper. The moving disc can rotate and push down the accumulated dust.

[0006] Preferably, the discharge mechanism further includes a protective pipe fixedly installed on the outside of the diversion pipe. The protective pipe has multiple vent holes on its outer side, and the end of the nozzle furthest from the diversion pipe is fixedly installed inside the vent holes. An annular disc is fixedly installed on the top of the inner support frame. The annular disc is assembled to the top of the mounting plate via a fixed flange. The bottom of the annular disc contacts the top of the bag body. A push pipe sleeved on the outside of the blowpipe is fixedly installed on the top of the protective pipe. A push plate is installed on the top of the push pipe. A U-shaped frame is fixedly installed on the top of the push plate. Two symmetrically distributed electric cylinders are fixedly installed on the top of the housing. An installation frame is fixedly installed between the bottom ends of the two electric cylinders. The installation frame is located inside the housing, and multiple optical shafts for limiting the sliding of the installation frame are fixedly installed between the housing and the mounting plate. The bottom of the installation frame is fixedly connected to the top of the U-shaped frame.

[0007] Preferably, the rotary spray mechanism further includes two support plates symmetrically fixedly installed on the outside of the collar. The end of the support plate away from the collar is fixedly installed on the top of the annular disk. A sliding rod is fixedly installed on the top of the support plate. A fixing plate is fixedly installed between the two sliding rods. A fixing hole is opened on the surface of the fixing plate, and the spray pipe is fixedly installed inside the fixing hole. The top end of the push pipe is rotatably installed on the bottom of the push plate. Slide plates are fixedly installed on both sides of the push plate, and the slide plates are slidably installed on the outside of the sliding rod. Two first spiral strips symmetrically distributed in a central manner are fixedly installed on the inside of the collar, and a first spiral groove that cooperates with the first spiral strips is opened on the outside of the push pipe.

[0008] Preferably, the pushing mechanism further includes a mounting rod fixedly installed on the top of the movable disk. A push plate is rotatably installed at the end of the mounting rod away from the movable disk. A push rod is fixedly installed on the top of the push plate. The push rod slides through the bottom of the mounting plate, and a horizontal plate located above the mounting plate is fixedly installed between the two push rods. The horizontal plate is fixedly installed on the inner side of the mounting frame. The bottom of the ash hopper has a hollow cylindrical structure. A fixing ring is sleeved on the outer side of the mounting rod. Two symmetrically distributed positioning plates are fixedly installed between the outer side of the fixing ring and the inner side of the housing. Two centrally symmetrically distributed second spiral strips are fixedly installed on the inner side of the fixing ring, and a second spiral groove that mates with the second spiral strips is installed on the outer side of the mounting rod. The top of the movable disk has a frustum structure.

[0009] Preferably, an electric air pump is fixedly installed on the left side of the housing, and the electric air pump is connected to the blow pipe through an air supply pipe.

[0010] Preferably, a rubber ring is fixedly installed at the bottom end of the blowpipe, and the inner side of the rubber ring is in contact with the outer side of the diversion pipe.

[0011] Preferably, the outer side of the protective tube is fitted with a plurality of annular frames that are vertically and equidistantly distributed, and the annular frames are fixedly installed on the inner side of the inner support frame.

[0012] Preferably, a rubber gasket is fixedly installed at the bottom of the annular disc, the top of the bag body is located inside the rubber gasket, and the bottom of the rubber gasket is in contact with the top of the mounting plate.

[0013] Preferably, a vertical plate is slidably installed between the two push rods, and the vertical plate is fixedly installed on the inner side of the ash hopper.

[0014] Preferably, a sleeve is fixedly installed at both the top and bottom of the fixing ring, and the sleeve is sleeved on the outside of the mounting rod, and the length of the sleeve is greater than the length of the second spiral groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, through its discharge mechanism, enables multiple vertically and equidistantly distributed nozzles on both sides of the diversion pipe to spray and blow onto the inner side of the filter bag body, facilitating the vibration of dust near the top of the filter bag body. It also allows the nozzles to move downwards, achieving segmented spraying and blowing onto the filter bag body, thereby achieving a comprehensive dust removal effect.

[0016] This invention utilizes a rotary spray mechanism, which enables the nozzle to rotate as it moves downwards, spraying air onto the inner side of the filter bag body. This achieves a uniform spraying effect on the inner side of the filter bag body, thereby improving dust removal efficiency and facilitating timely filtration of dust and gas by the filter bag body.

[0017] This invention, through a pushing mechanism, allows the moving disc to be inserted into the bottom inner side of the ash hopper in a rotating state during the cleaning process of the bag body. This facilitates the removal of dust adhering to the bottom inner side of the ash hopper and also utilizes the centrifugal force of the rotating moving disc to throw the dust out, thereby improving the convenience of dust discharge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural diagram of the bag body and the exhaust pipe in this invention; Figure 3 This is a schematic diagram of the mounting plate and mounting frame structure in this invention; Figure 4 This is a partial cross-sectional view of the protective pipe and nozzle in this invention; Figure 5 This is a schematic diagram of a partial cross-sectional structure of the collar and the first spiral strip in this invention; Figure 6 This is a schematic diagram of a partial cross-sectional structure of the push rod and push plate in this invention; Figure 7 This is a schematic diagram of a partial cross-sectional structure of the movable disc and ash hopper in this invention; Figure 8 This is a schematic diagram of the fixing ring and mounting rod structure in this invention.

[0019] In the diagram: 1. Shell; 2. Air inlet pipe; 3. Mounting plate; 4. Bag body; 5. Internal support frame; 6. Blowpipe; 7. Diverter pipe; 8. Nozzle; 9. Ring; 10. Moving disc; 11. Protective pipe; 12. Annular disc; 13. Push pipe; 14. Push plate; 15. U-shaped frame; 16. Electric cylinder; 17. Mounting frame; 18. Support plate; 19. Slide rod; 20. Fixing plate; 21. Slide plate; 22. First spiral; 23. Mounting rod; 24. Push plate; 25. Push rod; 26. Horizontal plate; 27. Fixing ring; 28. Positioning plate; 29. ​​Second spiral; 30. Exhaust pipe; 31. Ash hopper; 32. Electric air pump; 33. Rubber ring; 34. Annular frame; 35. Rubber gasket; 36. Vertical plate; 37. Sleeve. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8 The baghouse dust collector shown in the figure, used in a workshop for processing and manufacturing cast iron parts for automobiles, includes a housing 1 and an air inlet pipe 2 fixedly installed on the left side of the housing 1. The air inlet pipe 2 is connected to the air inlet box, allowing dusty gas to enter the housing 1 through the air inlet pipe 2. An mounting plate 3 is fixedly installed on the inner side of the housing 1. The surface of the mounting plate 3 has multiple mounting holes arranged in a rectangular array, and a filter bag body 4 is installed inside the mounting holes. An inner support frame 5 is provided on the inner side of the filter bag body 4. A blowpipe 6 is provided at the top of the filter bag body 4. An exhaust pipe 30 is fixedly installed on the right side of the housing 1. The exhaust box is connected to the exhaust pipe 30, allowing dusty gas to be filtered through the filter bag body 4 and then discharged from the exhaust pipe 30. Two symmetrically distributed dust hoppers 31 are fixedly installed at the bottom of the housing 1, allowing the dust filtered by the filter bag to be discharged outward from the dust hoppers 31. The discharge mechanism includes a diversion pipe 7 slidably installed inside the blowpipe 6. Multiple nozzles 8 are fixedly installed on both sides of the diversion pipe 7, arranged vertically and equidistantly. The nozzles 8 can clean the dust on the surface of the bag body 4 in sections. The discharge mechanism also includes a protective pipe 11 fixedly installed outside the diversion pipe 7. Multiple vent holes are opened on the outer side of the protective pipe 11, and the end of the nozzle 8 furthest from the diversion pipe 7 is fixedly installed inside the vent holes. An annular disc 12 is fixedly installed on the top of the inner support frame 5. The annular disc 12 is assembled to the top of the mounting plate 3 via a fixed flange. The bottom of the annular disc 12 contacts the top of the bag body 4. The operator can first insert the bag body 4 into the mounting hole of the mounting plate 3 and then insert the inner support frame 5 into the inside of the bag body 4, so that the annular disc 12 abuts against the top of the bag. At the top of the bag body 4, the fixing flange on the annular disc 12 is assembled with the mounting plate 3 to achieve the installation of the inner support frame 5 and the bag body 4. A push pipe 13, sleeved on the outside of the spray pipe 6, is fixedly installed at the top of the protective pipe 11. A push plate 14 is installed at the top of the push pipe 13, and a U-shaped frame 15 is fixedly installed at the top of the push plate 14. Two symmetrically distributed electric cylinders 16 are fixedly installed at the top of the housing 1. A mounting frame 17 is fixedly installed between the bottom ends of the two electric cylinders 16. The mounting frame 17 is located inside the housing 1, and multiple optical shafts for limiting the sliding of the mounting frame 17 are fixedly installed between the housing 1 and the mounting plate 3, providing guidance for the movement of the mounting frame 17. The bottom of the mounting frame 17 is fixedly connected to the top of the U-shaped frame 15. The blowpipe 6 delivers high-pressure air to the diversion pipe 7, allowing the high-pressure air to be discharged outwards through multiple symmetrically distributed nozzles 8. The nozzles 8 then perform segmented blowing on the outer side of the bag body 4. The two uppermost nozzles 8 blow on the top of the bag body 4. Simultaneously, the electric cylinder 16 pushes the mounting frame 17 downwards, causing the mounting frame 17 to push the U-shaped frame 15 downwards. The U-shaped frame 15, through the push plate 14, drives the push pipe 13 downwards, causing the push pipe 13 to drive the protective pipe 11 downwards. The protective pipe 11 then drives the diversion pipe 7 downwards, causing the nozzles 8 to move downwards. During this process, the blowpipe 6 intermittently delivers high-pressure air to the diversion pipe 7, thus achieving segmented blowing of the bag body 4. The left side of the housing 1 is fixedly installed... An electric air pump 32 is provided, which is connected to the blowpipe 6 via an air supply pipe. The electric air pump 32 supplies high-pressure air to the blowpipe 6 through the air supply pipe. A rubber ring 33 is fixedly installed at the bottom end of the blowpipe 6, and the inner side of the rubber ring 33 contacts the outer side of the diversion pipe 7 to improve the sealing between the blowpipe 6 and the diversion pipe 7. Multiple vertically and equidistantly distributed annular frames 34 are fitted on the outer side of the protective pipe 11. The annular frames 34 are fixedly installed on the inner side of the inner support frame 5 to provide auxiliary support for the protective pipe 11 and improve the stability of the movement of the protective pipe 11. A rubber gasket 35 is fixedly installed at the bottom of the annular disc 12. The top of the bag body 4 is located inside the rubber gasket 35, and the bottom of the rubber gasket 35 contacts the top of the mounting plate 3.When the fixing flange on the outer side of the annular disc 12 is assembled with the mounting plate 3, it can compress the rubber gasket 35, thereby improving the sealing between the annular disc 12 and the mounting plate 3.

[0022] Example 2: Please refer to Figures 4-6 This embodiment further illustrates Example 1. The rotary spray mechanism shown in the figure includes a collar 9 disposed at the top of the diverter pipe 7. The collar 9 enables the nozzle 8 to rotate and spray the bag body 4. The rotary spray mechanism also includes two support plates 18 symmetrically fixedly installed on the outside of the collar 9. The end of the support plate 18 away from the collar 9 is fixedly installed on the top of the annular disk 12. A slide rod 19 is fixedly installed on the top of the support plate 18. A fixing plate 20 is fixedly installed between the two slide rods 19. A fixing hole is opened on the surface of the fixing plate 20, and the spray pipe 6 is fixedly installed inside the fixing hole, so that the fixing plate 20 provides support for the spray pipe 6. The top of the push pipe 13 is rotatably installed on the bottom of the push plate 14. Slide plates 21 are fixedly installed on both sides of the push plate 14, and the slide plates 21 are slidably installed on the outside of the slide rods 19. When the push plate 14 moves, it can drive the two slide plates 21 to move along the slide rods 19. The outer sides of the two sliding rods 19 move downward to guide and support the movement of the push plate 14. Two centrally symmetrical first spiral strips 22 are fixedly installed on the inner side of the collar 9, and the outer side of the push tube 13 is provided with a first spiral groove that cooperates with the first spiral strips 22. During the movement of the push plate 14, the sliding rods 19 can guide and limit the movement of the slide plate 21, so that the push plate 14 can smoothly push the push tube 13 downward. The first spiral groove on the outer side of the push tube 13 can move along the first spiral strip 22 on the inner side of the collar 9, so that the first spiral strip 22 drives the push tube 13 to rotate through the first spiral groove. The push tube 13 can drive the protective tube 11 to rotate, so that the protective tube 11 drives the nozzle 8 and the diverter tube 7 to rotate. During the downward movement, the nozzle 8 can rotate to spray the inner side of the bag body 4, achieving a uniform spraying effect and improving dust removal efficiency.

[0023] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The feeding mechanism shown in the figure includes a movable disc 10 disposed inside the ash hopper 31. The movable disc 10 can push the accumulated dust in a rotating state. The feeding mechanism also includes a mounting rod 23 fixedly installed on the top of the movable disc 10. A push plate 24 is rotatably installed on the end of the mounting rod 23 away from the movable disc 10. A push rod 25 is fixedly installed on the top of the push plate 24. The push rod 25 slides through the bottom of the mounting plate 3, and a horizontal plate 26 located above the mounting plate 3 is fixedly installed between the two push rods 25. The horizontal plate 26 is fixedly installed inside the mounting frame 17. Ash hopper 31 The bottom of the device has a hollow cylindrical structure. When the mounting frame 17 moves, it can drive two push rods 25 to move downward along the inner side of the mounting plate 3 via the horizontal plate 26. This causes the push rods 25 to push the mounting rod 23 downward via the push plate 24. The mounting rod 23 can then drive the moving disc 10 to move along the inner side of the bottom of the ash hopper 31, pushing the dust adhering to the bottom of the ash hopper 31 downward. A fixing ring 27 is fitted on the outer side of the mounting rod 23. Two symmetrically distributed positioning plates 28 are fixedly installed between the outer side of the fixing ring 27 and the inner side of the housing 1. Two centrally symmetrically distributed second spiral strips 2 are fixedly installed on the inner side of the fixing ring 27. 9. The second spiral groove on the outer side of the mounting rod 23 cooperates with the second spiral strip 29. The top of the moving disk 10 has a frustum structure. When the mounting rod 23 moves downward, it can move along the inner side of the fixing ring 27, and the second spiral groove on its outer side can move along the outer side of the second spiral strip 29, so that the second spiral strip 29 drives the mounting rod 23 to rotate through the second spiral groove. The mounting rod 23 rotates during the downward movement, and the mounting rod 23 can drive the moving disk 10 to move synchronously, so that the moving disk 10 rotates and pushes out the dust on the inner side of the bottom of the ash hopper 31. It can also use centrifugal force to push the moving disk 10 to rotate. Dust is thrown out from the top of the disc 10. A vertical plate 36 is slidably installed between the two push rods 25 and is fixedly installed on the inner side of the ash hopper 31. The push rods 25 can move downward along the inner side of the vertical plate 36, so that the vertical plate 36, together with the mounting plate 3, provides support for the push rods 25. Sleeves 37 are fixedly installed at the top and bottom of the fixing ring 27, and the sleeves 37 are sleeved on the outer side of the mounting rod 23. The length of the sleeve 37 is greater than the length of the second spiral groove, so that when the mounting rod 23 moves, it can move along the outer side of the sleeve 37. The two sleeves 37 can provide protection for the second spiral groove and prevent dust from adhering to the second spiral groove.

[0024] Working principle: First, the dusty gas enters the housing 1 through the air inlet pipe 2. The dust in the gas is filtered by the filter bag body 4. The purified gas enters the space between the top of the mounting plate 3 and the inner side of the housing 1, and then exits outward through the exhaust pipe 30, thus achieving the filtration of dusty air. After long-term filtration, the operator activates two electric cylinders 16 and an electric air pump 32. The electric air pump 32 delivers high-pressure air to the blowpipe 6 through the air supply pipe. The blowpipe 6 delivers the high-pressure air to the diversion pipe 7, causing the high-pressure air to be discharged outward through multiple symmetrically distributed nozzles 8, spraying high-pressure gas onto the inner side of the filter bag body 4. Furthermore, the two uppermost nozzles 8 spray high-pressure gas onto the filter bag body 4. The top of body 4 is sprayed with air, and at the same time, the electric cylinder 16 pushes the mounting frame 17 downward, causing the mounting frame 17 to push the U-shaped frame 15 and the horizontal plate 26 downward. The U-shaped frame 15 pushes the push plate 14 downward, causing the push plate 14 to drive the slide plate 21 downward along the outside of the slide rod 19. The push plate 14 drives the push tube 13 downward along the inside of the collar 9. The first spiral groove on the outside of the push tube 13 moves along the first spiral strip 22 on the inside of the collar 9, causing the first spiral strip 22 to drive the push tube 13 to rotate through the first spiral groove. The push tube 13 is in a rotating state during the downward movement. The push tube 13 drives the protective tube 11 to move synchronously, and the protective tube 11 drives the diversion tube 7 and... The nozzle 8 rotates downwards, causing the symmetrical nozzles 8 on both sides of the diversion pipe 7 to rotate and spray air onto the inner side of the bag body 4, achieving a uniform spraying effect and improving dust removal efficiency. During this process, the electric air pump 32 intermittently delivers high-pressure air to the diversion pipe 7 through the spray pipe 6, causing the bag body 4 to continuously shake. This utilizes inertia to shake off dust from the outer side of the bag body 4, achieving comprehensive dust removal. Simultaneously, the horizontal plate 26 drives two push rods 25 to move downwards along the inner side of the mounting plate 3 and the vertical plate 36. The push rods 25 push the mounting rod 23 downwards via the push plate 24. The mounting rod 23 moves along the inner side of the fixing ring 27, causing the second spiral... The groove moves along the outer side of the second spiral 29, causing the second spiral 29 to drive the mounting rod 23 to rotate through the second spiral groove. The mounting rod 23 rotates as it moves downward, thereby driving the moving disc 10 to move synchronously. The moving disc 10 rotates and pushes the dust adhering to the bottom of the ash hopper 31 downward. Centrifugal force is used to throw off the dust on the top of the moving disc 10, solving the problem that traditional bag dust collectors have difficulty cleaning the dust on the top of the bag body 4. This reduces the dust removal time of the bag body 4 and allows the bag body 4 to filter the dusty air again in a timely manner, thus achieving a comprehensive and efficient cleaning of the dust on the surface of the bag body 4.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A baghouse dust collector for use in automotive cast iron parts processing and manufacturing workshops, characterized in that, include: The housing (1) and the air inlet pipe (2) installed on the left side of the housing (1) are provided. The mounting plate (3) is fixedly installed on the inner side of the housing (1). The surface of the mounting plate (3) is provided with multiple mounting holes, and the bag body (4) is installed on the inner side of the mounting holes. The inner support frame (5) is provided on the inner side of the bag body (4). The top of the bag body (4) is provided with a blower pipe (6). The exhaust pipe (30) is installed on the right side of the housing (1). Two ash hoppers (31) are installed at the bottom of the housing (1). Also includes: The material discharge mechanism is used to clean the dust on the surface of the bag body (4). The material discharge mechanism is installed inside the blow pipe (6). The material discharge mechanism includes a diversion pipe (7) that is slidably installed inside the blow pipe (6). Multiple nozzles (8) that are vertically and equidistantly distributed are fixedly installed on both sides of the diversion pipe (7). The nozzles (8) can clean the dust on the surface of the bag body (4) in segments. A rotary spray mechanism is used to increase the spray angle of the nozzle (8). The rotary spray mechanism is installed at the top of the diversion pipe (7). The rotary spray mechanism includes a collar (9) set at the top of the diversion pipe (7). The collar (9) enables the nozzle (8) to rotate and spray the bag body (4). The pushing mechanism is used to push down the dust accumulated inside the ash hopper (31). The pushing mechanism is installed inside the ash hopper (31) and includes a movable disk (10) disposed inside the ash hopper (31). The movable disk (10) can push down the accumulated dust in a rotating state.

2. The bag filter dust collector for automotive cast iron parts manufacturing workshop according to claim 1, characterized in that: The discharge mechanism also includes a protective pipe (11) installed on the outside of the diversion pipe (7). The protective pipe (11) has multiple vent holes on its outside, and one end of the nozzle (8) is installed on the inside of the vent holes. An annular disc (12) is installed on the top of the inner support frame (5). The annular disc (12) is assembled on the top of the mounting plate (3) through a fixed flange. The bottom of the annular disc (12) is in contact with the top of the bag body (4). A push pipe (13) sleeved on the outside of the blow pipe (6) is fixedly installed on the top of the protective pipe (11). The top of the push tube (13) is equipped with a push plate (14), the top of the push plate (14) is equipped with a U-shaped frame (15), the top of the housing (1) is equipped with two electric cylinders (16), the bottom of the two electric cylinders (16) is equipped with an installation frame (17), the installation frame (17) is located inside the housing (1), and multiple optical shafts for limiting the sliding of the installation frame (17) are installed between the housing (1) and the installation plate (3). The bottom of the installation frame (17) is fixedly connected to the top of the U-shaped frame (15).

3. The bag filter for automotive cast iron parts manufacturing workshop according to claim 2, characterized in that: The rotary spray mechanism also includes two support plates (18) symmetrically installed on the outside of the collar (9). One end of the support plate (18) is installed on the top of the annular disk (12). A slide rod (19) is installed on the top of the support plate (18). A fixing plate (20) is installed between the two slide rods (19). A fixing hole is opened on the surface of the fixing plate (20). The spray pipe (6) is installed inside the fixing hole. The top end of the push pipe (13) is rotatably installed on the bottom of the push plate (14). Slide plates (21) are installed on both sides of the push plate (14). The slide plates (21) are slidably installed on the outside of the slide rods (19). Two first spiral strips (22) are centrally symmetrically distributed on the inside of the collar (9). A first spiral groove that cooperates with the first spiral strips (22) is opened on the outside of the push pipe (13).

4. The bag filter for automotive cast iron parts manufacturing workshop according to claim 3, characterized in that: The feeding mechanism also includes a mounting rod (23) installed on the top of the moving disk (10). A push plate (24) is rotatably mounted on one end of the mounting rod (23). A push rod (25) is installed on the top of the push plate (24). The push rod (25) slides through the bottom of the mounting plate (3). A horizontal plate (26) is installed between the two push rods (25) and above the mounting plate (3). The horizontal plate (26) is installed on the inner side of the mounting frame (17). The bottom of the ash hopper (31) is a hollow cylindrical structure. A fixing ring (27) is sleeved on the outer side of the mounting rod (23). Two positioning plates (28) are installed between the outer side of the fixing ring (27) and the inner side of the housing (1). Two second spiral strips (29) are installed on the inner side of the fixing ring (27) in a centrally symmetrical distribution. The outer side of the mounting rod (23) cooperates with the second spiral strips (29) in a second spiral groove. The top of the moving disk (10) is a frustum structure.

5. The bag filter dust collector for automotive cast iron parts processing and manufacturing workshops according to claim 1, characterized in that: An electric air pump (32) is installed on the left side of the housing (1), and the electric air pump (32) is connected to the blow pipe (6) through an air supply pipe.

6. The bag filter dust collector for automotive cast iron parts processing and manufacturing workshop according to claim 2, characterized in that: A rubber ring (33) is installed at the bottom end of the blow pipe (6), and the inner side of the rubber ring (33) is in contact with the outer side of the diversion pipe (7).

7. The bag filter for automotive cast iron parts manufacturing workshop according to claim 2, characterized in that: The outer side of the protective tube (11) is fitted with a plurality of ring frames (34), which are installed on the inner side of the inner support frame (5).

8. The bag filter dust collector for automotive cast iron parts processing and manufacturing workshop according to claim 2, characterized in that: A rubber gasket (35) is installed at the bottom of the annular disk (12).

9. The bag filter for automotive cast iron parts manufacturing workshop according to claim 4, characterized in that: A vertical plate (36) is slidably installed between the two push rods (25), and the vertical plate (36) is installed on the inner side of the ash hopper (31).

10. The bag filter dust collector for automotive cast iron parts processing and manufacturing workshop according to claim 4, characterized in that: The top and bottom of the fixing ring (27) are both equipped with sleeves (37), and the sleeves (37) are sleeved on the outside of the mounting rod (23).

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