Environment-friendly dust recovery equipment based on concrete mixing plant

Abstract

The application discloses an environment-friendly dust recovery equipment based on a concrete mixing plant, and relates to the technical field of dust recovery.The environment-friendly dust recovery equipment comprises a main body, an inner cleaning assembly is arranged in the framework, a lifting plate is arranged outside the filter bag, an outer cleaning assembly is arranged on one side of the lifting plate, two cleaning rings are arranged in each round hole, an adjusting assembly is arranged inside the lifting plate, a dust baffle is arranged inside the main body, an opening and closing assembly is arranged on one side of the dust baffle, and the lifting plate is lowered through cooperation of a lead screw, a lifting rod connecting plate, a limiting block and a fixing block, the fixing block drives a fixing shaft to slide in a Z-shaped cavity formed in the limiting plate when the fixing block is lowered, so that the lifting plate shakes in the horizontal direction while being lowered, and then the cleaning ring is attached to the outer wall of the filter bag through cooperation of a moving frame, a connecting block and a sliding frame, and dust accumulated on the surface of the filter bag is scraped off when the cleaning ring is lowered.

Description

Technical Field

[0001] This invention relates to the field of dust recovery technology, specifically to an environmentally friendly dust recovery device based on a concrete mixing plant. Background Technology

[0002] Concrete mixing plants generate a large amount of dust (such as cement, fly ash, sand, and gravel particles) during production. The core function of environmentally friendly dust recovery equipment is to reduce dust pollution by efficiently collecting, separating, and treating this dust. The separation process is crucial, using physical or chemical methods to separate particulate matter from the air in the dust-laden airflow, ensuring that the purified air meets emission standards. Currently, baghouse dust collectors are the mainstream technology due to their high efficiency and widespread application. During operation, the dust-laden airflow enters the dust collector chamber and passes through the fiber gaps of the filter bags. Dust particles are blocked on the surface of the filter bags due to inertia, interception, and diffusion, forming a dust layer. The purified air enters the clean air chamber through the inside of the filter bags and is finally discharged into the atmosphere by the fan. As the dust layer thickens, the filter bag resistance increases. At this point, the dust removal device is activated: compressed air is injected into the filter bags through pulse valves, causing the filter bags to expand and vibrate instantly, shaking off the surface dust layer into the ash hopper below.

[0003] Traditional baghouse dust collector filter bags are typically made of textile fibers or non-woven fabrics, with micropores on their surface. When dust particles are larger than the pores between the filter bag fibers, they are directly trapped on the filter bag surface. If dust accumulates on the bags for a long time (especially in high-humidity environments, such as cement or fly ash dust in mixing plants), it will clump together due to moisture absorption and compaction. This clump of dust, once it enters the recovery system, is difficult to mix evenly into the concrete raw materials, potentially causing fluctuations in the concrete mix ratio and affecting properties such as strength. Furthermore, once the dust accumulates to a certain extent on the bags, it may cause problems during pulse cleaning. A large amount of dust may detach at once, exceeding the handling capacity of the conveying equipment. This can lead to hopper blockage or material overflow, resulting in dust waste and secondary pollution. Furthermore, the pulse jet airflow can create local vortices around the filter bags, which can trap the detached dust, preventing it from settling smoothly into the hopper. Instead, the dust may remain suspended and diffuse within the vortex, eventually re-adsorbing onto the surfaces of other filter bags, whether cleaned or not, causing secondary adhesion. If the hopper slope is insufficient or there are dead corners, the dust may accumulate inside the hopper as it falls, only to be lifted again by the airflow, creating a cycle of dust pollution.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing environmentally friendly dust recovery equipment used in concrete mixing plants. Summary of the Invention

[0005] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide an environmentally friendly dust recovery device based on a concrete mixing plant to solve the aforementioned problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly dust recovery device based on a concrete mixing plant, comprising a main body, a conveying pipe fixed to one side of the main body, a fixing plate fixed inside the main body, a pulse valve installed on the top of the fixing plate, multiple circular holes on the fixing plate, a frame placed inside each circular hole, an inner cleaning component installed inside the frame, a filter bag installed on the outer wall of the frame, the dust accumulated on the inner wall of the frame and filter bag being scraped off by the inner cleaning component, a lifting plate installed outside the filter bag, an outer cleaning component installed on one side of the lifting plate, the outer cleaning component being used to scrape off dust on the outer wall of the filter bag, the lifting plate having circular holes, two cleaning rings installed in each circular hole, both ends of the cleaning rings being inclined surfaces, an adjusting component installed inside the lifting plate, the distance between the two cleaning rings being adjusted by the adjusting component, a dust baffle plate installed inside the main body, the dust baffle plate having an elliptical cross-section, and an opening and closing component installed on one side of the dust baffle plate.

[0007] Preferably, the internal cleaning component includes a fan disposed inside the frame, the fan having a rotating shaft passing through it, a connector fixed to the bottom end of the rotating shaft, rotating rings fixed to both sides of the connector, multiple scraping wires fixed at equal angles to the top of the rotating rings, a turntable fixed to the top of the rotating shaft, an eccentric shaft fixed to the top of the turntable, and a striking element slidably connected to the outer wall of the eccentric shaft.

[0008] Preferably, the scraping wire is disposed in the gap between the frame and the filter bag, and the top end of the scraping wire is fixedly connected to the top end of the frame. The inner wall of the frame is symmetrically fixed with slide rails, the striking element is slidably connected to the slide rails, and the slide rails have cavities that cooperate with the movement of the striking element.

[0009] Preferably, the external cleaning component includes a lead screw fixedly connected to the output end of the motor, a lifting rod connected to the outer wall of the lead screw by a thread, and the lifting rod is slidably limited to the main body. A connecting plate is fixed to the top of the lifting rod, a limit block is slidably connected to the top of the connecting plate, a fixing block is fixed to the top of the limit block, a fixing shaft is fixed to one side of the fixing block, and the fixing shaft is slidably connected to the limit plate.

[0010] Preferably, the top of the connecting plate has a cavity that moves to cooperate with the limiting block, one side of the fixing block is fixedly connected to the lifting plate, the bottom of the limiting plate is fixedly connected to the main body, and the limiting plate has a Z-shaped cavity that moves to cooperate with the fixing shaft.

[0011] Preferably, the adjustment assembly includes a movable frame fixedly connected to an electric push rod, the movable frame being slidably connected to a lifting plate and slidably connected to the top of a fixed block, the movable frame being composed of multiple vertical rods and horizontal rods, and a connecting block being slidably connected to one side of the vertical rods of the movable frame, a sliding frame being fixed to one side of the connecting block, and a protruding part of the sliding frame being fixedly connected to a cleaning ring.

[0012] Preferably, the lifting plate has a cavity inside that moves to cooperate with the movable frame and the sliding frame. The contact surfaces of the movable frame and the connecting block are both inclined surfaces, and the vertical rod of the movable frame is located between the two sliding frames. The vertical rod of the outermost movable frame is located between the sliding frame and the inner wall of the cavity opened in the lifting plate.

[0013] Preferably, a spring is provided between every two sliding frames, and a spring is provided between one side of the outermost sliding frame and the inner wall of the cavity opened in the lifting plate.

[0014] Preferably, the opening and closing assembly includes connecting rods disposed on both sides of the dust baffle, and the connecting rods are rotatably connected to the inner wall of the main body. An arc-shaped block is disposed at the top of the dust baffle, and a rotating rod is fixed on one side of the arc-shaped block. The rotating rod is rotatably connected to a sliding plate.

[0015] Preferably, a torsion spring is provided between the sliding plate and the main body, one end of the torsion spring is fixedly connected to the inner wall of the main body, and the other end of the torsion spring is fixedly connected to one side of the sliding plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention utilizes a lead screw, a lifting rod connecting plate, a limiting block, and a fixing block to cause the lifting plate to move downwards. Since a fixing shaft is fixed on one side of the fixing block, when the fixing block moves downwards, it drives the fixing shaft to slide in the Z-shaped cavity opened in the limiting plate. This causes the lifting plate to sway horizontally while moving downwards. Simultaneously, the lifting plate moves downwards, and the electric push rod drives the moving frame to move. The moving frame, connecting block, and sliding frame work together to make the cleaning ring fit against the outer wall of the filter bag. Since both ends of the cleaning ring are inclined, the cleaning ring scrapes away the dust accumulated on the surface of the filter bag when it moves downwards, especially the mechanically embedded accumulation of medium and coarse particles. This allows the cleaning ring to sway horizontally while moving downwards, enhancing the cleaning effect on the outer wall of the filter bag.

[0018] 2. This invention uses a fan to drive a rotating shaft, which in turn drives the scraping wires to rotate via the shaft, connectors, and rotating ring. This not only adapts to the shape changes of the filter bag after expansion but also penetrates deep into the fiber gaps to scrape away embedded fine particles, preventing bag clogging. This effectively removes dust from the inner wall of the filter bag and the surface of the filter frame. When the rotating shaft rotates, it also drives the turntable to rotate, which in turn drives the eccentric shaft to rotate. When the eccentric shaft rotates, it causes the striking element to slide inside the cavity of the slide rail, allowing the sliding striking element to periodically strike the filter frame. This vibration further removes the stubborn dust adhering to the filter, enhancing the cleaning effect. Furthermore, the vibration generated by the periodic striking of the filter frame is transmitted to the filter bag through the frame, further weakening the adhesion between the dust and the filter bag.

[0019] 3. This invention utilizes airflow impact to drive the top of the dust baffle plate, causing it to rotate. The rotation of the dust baffle plate drives the arc-shaped block to rotate as well. Since the arc-shaped block is connected to the sliding plate via a rotating rod, the rotation of the arc-shaped block causes the sliding plate to move along an arc-shaped trajectory. At this time, dust stripped from the filter bag surface by pulses and dust scraped by the cleaning ring fall into the ash hopper through the channel opened by the dust baffle plate. Furthermore, when the dust baffle plate rotates under the impact of airflow, it tilts. When the dust in the ash hopper below is impacted by the airflow and floats upwards, it is forced to move towards the bottom of the ash hopper by the obstruction of the tilted dust baffle plate, preventing the dust accumulated in the ash hopper from being re-raised by the airflow and forming a circulating dust. Additionally, the downward-moving lifting plate forms a transverse barrier within the main body, blocking the local vortex around the filter bag and preventing suspended dust from being carried by the vortex and re-adsorbed onto the filter bag surface. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection between the fixing plate and the frame of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the opening and closing component of the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection between the dust baffle and the arc-shaped block of the present invention;

[0024] Figure 5 This is a schematic diagram showing the connection between the lifting plate and the filter bag in this invention;

[0025] Figure 6 This is a schematic diagram showing the connection between the lifting plate and the movable frame of the present invention;

[0026] Figure 7 This is a schematic diagram showing the connection between the sliding frame and the spring in this invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point A;

[0028] Figure 9 This is a schematic diagram showing the connection between the cleaning ring and the sliding frame of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the internal cleaning component of the present invention;

[0030] Figure 11 This is a schematic diagram showing the connection between the rotating shaft and the turntable of the present invention.

[0031] In the diagram: 1. Main body; 2. Conveying pipe; 3. Fixing plate; 4. Frame; 501. Fan; 502. Rotating shaft; 503. Connecting part; 504. Rotating ring; 505. Scraper wire; 506. Turntable; 507. Eccentric shaft; 508. Striking part; 509. Slide rail; 6. Lifting plate; 701. Lead screw; 702. Lifting rod; 703. Connecting plate; 704. Limiting block; 705. Fixing block; 706. Fixing shaft; 707. Limiting plate; 801. Moving frame; 802. Connecting block; 803. Spring; 804. Sliding frame; 9. Cleaning ring; 10. Dust baffle plate; 111. Connecting rod; 112. Arc-shaped block; 113. Rotating rod; 114. Sliding plate; 115. Torsion spring; 12. Filter bag. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1 to 11This invention provides a technical solution: an environmentally friendly dust recovery device based on a concrete mixing plant, comprising a main body 1, a conveying pipe 2 fixed on one side of the main body 1, a fixing plate 3 fixed inside the main body 1, a pulse valve on the top of the fixing plate 3, multiple circular holes on the fixing plate 3, a frame 4 placed inside each circular hole, an internal cleaning component inside the frame 4, and a filter bag 12 on the outer wall of the frame 4. The internal cleaning component scrapes away the dust accumulated on the inner wall of the frame 4 and the filter bag 12. A lifting plate 6 is provided outside the filter bag 12, and an external cleaning component is provided on one side of the lifting plate 6. The external cleaning component scrapes away the dust on the outer wall of the filter bag 12. The lifting plate 6 has circular holes, and two cleaning rings 9 are provided in each circular hole. Both ends of the cleaning rings 9 are inclined surfaces. An adjustment component is provided inside the lifting plate 6, and the distance between the two cleaning rings 9 is adjusted by the adjustment component. A dust baffle 10 is provided inside the main body 1, and the dust baffle 10 has an elliptical cross-section. An opening and closing component is provided on one side of the dust baffle 10.

[0034] In practice, dust from various dust-generating points in the concrete mixing plant is introduced into the main body 1 through the conveying pipe 2. When the dust-laden airflow passes through the filter bag 12, the dust is blocked on the surface of the filter bag 12. When cleaning is required, the internal cleaning component inside the frame 4 scrapes the dust off the frame 4 and the inner wall of the filter bag 12. At the same time, the external cleaning component on one side of the lifting plate 6 adjusts the distance between the two cleaning rings 9 through the adjusting component, so that the cleaning rings 9 fit against the outer wall of the filter bag 12. The inclined surface of the cleaning rings 9 is used to scrape the dust off the outer wall. The dust baffle 10 inside the main body 1 is opened and closed through the opening and closing component. The dust baffle 10 with an elliptical cross section opens the channel when the dust falls, while preventing the dust in the ash hopper from rising back. After cleaning, it closes to form a barrier, thus completing the process of dust filtration, cleaning and prevention of secondary dust.

[0035] As a further embodiment of the present invention, the internal cleaning component includes a fan 501 disposed inside the frame 4, a rotating shaft 502 passing through the fan 501, a connector 503 fixed at the bottom end of the rotating shaft 502, rotating rings 504 fixed on both sides of the connector 503, a plurality of scraping wires 505 fixed at equal angles at the top of the rotating rings 504, a turntable 506 fixed at the top of the rotating shaft 502, an eccentric shaft 507 fixed at the top of the turntable 506, and a striking element 508 slidably connected to the outer wall of the eccentric shaft 507.

[0036] In practice, when the pulse cleaning airflow enters the frame 4, it drives the internal fan 501 to rotate. The fan 501 drives the rotating shaft 502 to rotate. The rotating shaft 502 drives the rotating ring 504 to rotate synchronously through the bottom connector 503. This causes the scraping wire 505 at the top of the rotating ring 504 to scrape away the dust on the inner wall of the frame 4 and the filter bag 12. At the same time, the turntable 506 at the top of the rotating shaft 502 rotates with it, driving the eccentric shaft 507 to rotate. When the eccentric shaft 507 rotates, it slides in the cavity opened by the striking element 508, thereby changing the position of the striking element 508 on the turntable 506. This allows the striking element 508 to slide back and forth in the cavity opened by the slide rail 509, intermittently impacting the left and right sides of the frame 4. This causes the striking element 508 to slide and periodically strike the frame 4, enhancing the dust removal effect through vibration.

[0037] As a further embodiment of the present invention, the scraping wire 505 is disposed in the gap between the frame 4 and the filter bag 12, and the top end of the scraping wire 505 is fixedly connected to the top end of the frame 4. The inner wall of the frame 4 is symmetrically fixed with a slide rail 509, and the striking member 508 is slidably connected to the slide rail 509. The slide rail 509 has a cavity that cooperates with the movement of the striking member 508.

[0038] In practice, the scraper wire 505 is located in the gap between the frame 4 and the filter bag 12. Its top end is fixed to the top of the frame 4 and can rotate with the rotating ring 504 to scrape off the dust in the gap between the two. At the same time, the slide rail 509 symmetrically fixed on the inner wall of the frame 4 has a cavity for the striking part 508 to slide in, ensuring that the striking part 508 can stably and periodically strike the frame 4, thereby enhancing the dust removal effect.

[0039] As a further embodiment of the present invention, the external cleaning component includes a lead screw 701 fixedly connected to the output end of the motor. The outer wall of the lead screw 701 is connected to a lifting rod 702 by a thread, and the lifting rod 702 is slidably limited to the main body 1. A connecting plate 703 is fixed to the top of the lifting rod 702. A limit block 704 is slidably connected to the top of the connecting plate 703. A fixing block 705 is fixed to the top of the limit block 704. A fixing shaft 706 is fixed to one side of the fixing block 705. The fixing shaft 706 is slidably connected to the limit plate 707.

[0040] In practice, the motor drives the lead screw 701 to rotate, which in turn drives the lifting rod 702, which is slidably limited to the main body 1, to move through the threaded transmission. The connecting plate 703 at the top of the lifting rod 702 moves accordingly. The limiting block 704 and the fixing block 705 at the top of the connecting plate 703 move synchronously. The fixing shaft 706 on one side of the fixing block 705 slides within the limiting plate 707, thereby realizing the movement and position adjustment of the lifting plate 6, providing power and motion trajectory constraints for cleaning the outer wall of the filter bag 12.

[0041] As a further embodiment of the present invention, the top of the connecting plate 703 is provided with a cavity that moves in conjunction with the limiting block 704, one side of the fixing block 705 is fixedly connected to the lifting plate 6, the bottom of the limiting plate 707 is fixedly connected to the main body 1, and the limiting plate 707 is provided with a Z-shaped cavity that moves in conjunction with the fixing shaft 706.

[0042] In specific implementation, the cavity at the top of the connecting plate 703 provides space for the limit block 704 to move. One side of the fixed block 705 is fixedly connected to the lifting plate 6 to drive its movement. The limit plate 707, which is fixed to the main body 1 at the bottom, has a Z-shaped cavity for the fixed shaft 706 to slide in, so that the lifting plate 6 will sway horizontally while moving with the lifting rod 702, thereby enhancing the cleaning effect of the outer wall of the filter bag 12.

[0043] As a further embodiment of the present invention, the adjustment component includes a movable frame 801 fixedly connected to an electric push rod, the movable frame 801 being slidably connected to a lifting plate 6, and the movable frame 801 being slidably connected to the top of a fixed block 705. The movable frame 801 is composed of multiple vertical rods and horizontal rods, and a connecting block 802 is slidably connected to one side of the vertical rod of the movable frame 801. A sliding frame 804 is fixed to one side of the connecting block 802, and the protruding part of the sliding frame 804 is fixedly connected to a cleaning ring 9.

[0044] In practice, the electric push rod drives the movable frame 801 to slide on the top of the fixed block 705. The vertical rod of the movable frame 801 slides and engages with the connecting block 802, thereby driving the sliding frame 804 on one side of the connecting block 802 to move. The protruding part of the sliding frame 804 is fixedly connected to the cleaning ring 9. In this way, the distance between the two cleaning rings 9 can be adjusted by sliding the movable frame 801, so as to achieve the contact or separation between the cleaning ring 9 and the outer wall of the filter bag 12, adapting to different cleaning needs.

[0045] As a further embodiment of the present invention, the lifting plate 6 has a cavity inside that moves in conjunction with the movable frame 801 and the sliding frame 804. The contact surfaces of the movable frame 801 and the connecting block 802 are both inclined surfaces, and the vertical rod of the movable frame 801 is located between the two sliding frames 804. The vertical rod of the outermost movable frame 801 is located between the sliding frame 804 and the inner wall of the cavity opened in the lifting plate 6.

[0046] In specific implementation, the cavity inside the lifting plate 6 provides movement space for the movable frame 801 and the sliding frame 804. The movable frame 801 and the connecting block 802 are in contact through an inclined surface. Its vertical rod is located between the two sliding frames 804, and the outermost vertical rod is located between the sliding frame 804 and the inner wall of the cavity of the lifting plate 6. This structure allows the movable frame 801 to slide and push the sliding frame 804 to move through the inclined surface. Since the protruding position of the sliding frame 804 is connected to the cleaning ring 9, when the sliding frame 804 moves in both directions under the action of the movable frame 801, it will drive the two cleaning rings 9 to move simultaneously, so that the two cleaning rings 9 fit together to form a complete ring and fit against the outer wall of the filter bag 12. When the sliding frame 804 returns to its original position, it will drive the cleaning rings 9 to return to their original position. At this time, the two cleaning rings 9 separate from the outer wall of the filter bag 12, thereby adjusting the spacing of the cleaning rings 9 and realizing the close cleaning of the outer wall of the filter bag 12.

[0047] As a further embodiment of the present invention, a spring 803 is provided between every two sliding frames 804, and a spring 803 is provided between one side of the outermost sliding frame 804 and the inner wall of the cavity opened in the lifting plate 6.

[0048] In practice, springs 803 are provided between every two sliding frames 804 in the adjustment assembly and between the outermost sliding frame 804 and the inner wall of the cavity of the lifting plate 6. When the moving frame 801 pushes the sliding frame 804 to move, the spring 803 is stretched and stores elastic potential energy. After the moving frame 801 is reset, the spring 803 releases its potential energy and drives the sliding frame 804 back to its original position, thereby achieving the separation of the cleaning ring 9 from the outer wall of the filter bag 12 and avoiding affecting the normal filtration operation of the equipment.

[0049] As a further embodiment of the present invention, the opening and closing assembly includes connecting rods 111 disposed on both sides of the dust baffle 10, and the connecting rods 111 are rotatably connected to the inner wall of the main body 1. An arc-shaped block 112 is disposed at the top of the dust baffle 10, and a rotating rod 113 is fixed on one side of the arc-shaped block 112. A sliding plate 114 is rotatably connected to the rotating rod 113.

[0050] In specific implementation, the connecting rods 111 on both sides of the dust baffle 10 are rotatably connected to the inner wall of the main body 1, providing rotational support for the dust baffle 10. The arc-shaped block 112 at the top of the dust baffle 10 is rotatably connected to the sliding plate 114 through a rotating rod 113 fixed on one side. When the sliding plate 114 moves, the rotating rod 113 can drive the arc-shaped block 112 and the dust baffle 10 to rotate around the connecting rod 111, thereby opening and closing the dust baffle 10 and controlling the opening and closing of the dust falling channel.

[0051] As a further embodiment of the present invention, a torsion spring 115 is provided between the sliding plate 114 and the main body 1. One end of the torsion spring 115 is fixedly connected to the inner wall of the main body 1, and the other end of the torsion spring 115 is fixedly connected to one side of the sliding plate 114.

[0052] In specific implementation, a torsion spring 115 is connected between the sliding plate 114 and the inner wall of the main body 1. When the dust baffle 10 is rotated by the impact of airflow, it will drive the sliding plate 114 to move through the arc block 112 and the rotating rod 113, so that the torsion spring 115 deforms and stores elastic potential energy. When the impact force disappears, the torsion spring 115 releases potential energy to drive the sliding plate 114 to reset, and then the dust baffle 10 is closed through the transmission structure, so as to realize the automatic reset and blocking function of the dust baffle 10.

[0053] Working Principle: When using this environmentally friendly dust recovery equipment based on a concrete mixing plant, dust generated at various dust-generating points in the mixing plant (such as the material hopper inlet, the mixing host, and the belt conveyor transfer point) is guided into the main body 1 via the conveying pipe 2. After the dust-laden airflow enters the main body 1, it passes through the fiber gaps of the filter bags 12. Dust particles are blocked on the surface of the filter bags 12 due to inertia, interception, and diffusion. As the dust on the surface of the filter bags 12 thickens, the resistance of the filter bags 12 increases. At this time, the dust removal device is activated: through solid... The pulse valve at the top of the fixed plate 3 injects compressed air into the filter bag 12, causing the filter bag 12 to expand and vibrate instantly, shaking off the dust on its surface into the ash hopper below. When the pulse valve injects compressed air into the filter bag 12, the fan 501, located inside the frame 4, rotates under the action of the airflow, which in turn drives the rotating shaft 502 connected to it to rotate. The rotation of the rotating shaft 502 drives the connecting piece 503 at its bottom to rotate synchronously. The rotation of the connecting piece 503 drives the rotating ring 504 fixedly connected to it to rotate, thereby making the rotating ring 504 rotate. The top scraper wire 505 rotates, and since the top of the scraper wire 505 is fixedly connected to the top of the frame 4, its bottom end rotates with the rotating ring 504, thereby scraping away dust from the inner wall of the filter bag 12 and the surface of the frame 4. (The scraper wire 505 is made of elastic material, and it will wrap around the surface of the frame 4 as the rotating ring 504 rotates. When the pulse ends, it will release its elastic potential energy and drive the rotating ring 504 to reverse and reset, avoiding structural jamming.) When the rotating shaft 502 rotates, it simultaneously drives the rotating disk 506 at its top to rotate. The rotating disk 506 rotates... The eccentric shaft 507 at its top rotates, and when the eccentric shaft 507 rotates, it drives the striking element 508 to slide inside the cavity opened in the slide rail 509, thereby causing the sliding striking element 508 to periodically strike the frame 4 (the striking element 508 is located inside the frame 4, the filter bag 12 is provided outside the frame 4, and the scraping wire 505 is located in the gap between the frame 4 and the filter bag 12). Through vibration, the stubborn dust adhering to it is further removed, the cleaning effect is enhanced, and the dust accumulated on the inner wall of the filter bag 12 and the frame 4 is cleaned.

[0054] When the pulse is applied, the motor is started, driving the lead screw 701 to rotate. The rotation of the lead screw 701, through the threads on its outer wall, causes the lifting rod 702 to slide downward within the main body 1. The downward movement of the lifting rod 702 causes the connecting plate 703 at its top to move downward simultaneously, thereby causing the limiting block 704 and the fixing block 705 to move downward. The fixing block 705 is fixedly connected to the lifting plate 6, thus causing the lifting plate 6 to move downward. Since a fixing shaft 706 is fixed to one side of the fixing block 705, when the fixing block 705 moves downward, it causes the fixing shaft 706 to slide in the Z-shape of the limiting plate 707, thereby causing the fixing block 705 to slide in the cavity at the top of the connecting plate 703. This causes the lifting plate 6 to sway horizontally while moving downward. At the same time as the lifting plate 6 moves downward, the controller starts the electric push rod, which drives the moving frame. When the moving frame 801 moves to contact the connecting block 802, since the contact surfaces of the moving frame 801 and the connecting block 802 are both inclined, the moving frame 801 moves the connecting block 802 toward the central axis of the circular hole in the lifting plate 6, thereby driving the sliding frame 804 fixedly connected to the connecting block 802 to move synchronously (at this time, the spring 803 between the sliding frames 804 is in a stretched state). The movement of the sliding frame 804 causes the cleaning ring 9 fixedly connected to it to fit against the outer wall of the filter bag 12. Since both ends of the cleaning ring 9 are inclined, when the cleaning ring 9 moves down, it is easy to scrape off the dust accumulated on the surface of the filter bag 12. Since the lifting plate 6 will shake horizontally while moving down, the cleaning ring 9 will shake horizontally while moving down, which enhances the cleaning effect on the outer wall of the filter bag 12.

[0055] When the pulse is applied, the impact of the pulsed airflow causes the top of the dust baffle 10 to rotate. This rotation of the dust baffle 10 causes the connecting rod 111 to rotate synchronously. Furthermore, the rotation of the dust baffle 10 causes the arc-shaped block 112 fixed at its top to rotate. Since the arc-shaped block 112 is connected to the sliding plate 114 via the rotating rod 113, its rotation causes the sliding plate 114 to move along an arc-shaped trajectory (the torsion spring 115 installed on the inner wall of the main body 1 is in a stretched state). At this time, dust stripped from the surface of the filter bag 12 by the pulse and dust scraped off by the cleaning ring 9 slide through the gaps in the opened dust baffle 10. The dust falls into the ash hopper below, and the dust baffle 10 has an elliptical cross-section. The dust falling to the top of the dust baffle 10 slides down its curved surface into the ash hopper below. When the dust baffle 10 is rotated by the airflow, it tilts. When the dust in the ash hopper below is impacted by the airflow and floats upward, it will change its direction of movement and move towards the bottom of the ash hopper by the obstruction of the tilted dust baffle 10, preventing the dust accumulated in the ash hopper from being lifted up again by the airflow and forming a cycle of dust. The downward-moving lifting plate 6 forms a horizontal barrier in the main body 1, blocking the local vortex around the filter bag 12 and preventing the suspended dust from being carried by the vortex and re-adsorbed onto the surface of the filter bag 12.

[0056] When the pulse ends, the force on the top of the dust baffle 10 disappears, and the sliding plate 114 releases its elastic potential energy through the torsion spring 115 fixed on one side, causing the sliding plate 114 to reset, and in turn, the dust baffle 10 to reset, thus achieving physical isolation of the ash hopper and filter bag 12 area, preventing dust in the ash hopper from being lifted by external force and re-adsorbed onto the surface of the filter bag 12. When the dust baffle 10 resets, the motor reverses to drive the lead screw 701 to rotate, which in turn drives the lifting plate 6 to move upward through the lifting rod 702. At this time, the electric push rod drives the moving frame 801 to move, causing the moving frame 801 to disengage from the connecting block 802. The spring 803 between the sliding frames 804 releases its elastic potential energy, causing the sliding frame 804 to move away from the central axis of the circular hole opened in the lifting plate 6. At this time, the cleaning ring 9 does not contact the outer wall of the filter bag 12. When the lifting plate 6 moves upward, the cleaning ring 9 resets and disengages from the filter bag 12, without affecting the normal operation of the main body 1.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmentally friendly dust recovery device based on a concrete mixing plant, comprising a main body (1), characterized in that: A conveying pipe (2) is fixed on one side of the main body (1), and a fixing plate (3) is fixed inside the main body (1). A pulse valve is provided on the top of the fixing plate (3). The fixing plate (3) has multiple round holes, and a frame (4) is placed inside each round hole. An internal cleaning component is provided inside the frame (4). A filter bag (12) is provided on the outer wall of the frame (4). The dust accumulated on the inner wall of the frame (4) and the filter bag (12) is scraped off by the internal cleaning component. A lifting plate (6) is provided outside the filter bag (12). 6) An external cleaning component is provided on one side, and the dust on the outer wall of the filter bag (12) is scraped off by the external cleaning component. The lifting plate (6) has a round hole, and two cleaning rings (9) are provided in each round hole. Both ends of the cleaning rings (9) are inclined surfaces. An adjustment component is provided inside the lifting plate (6), and the distance between the two cleaning rings (9) is adjusted by the adjustment component. A dust baffle (10) is provided inside the main body (1), and the cross section of the dust baffle (10) is elliptical. An opening and closing component is provided on one side of the dust baffle (10). The opening and closing assembly includes connecting rods (111) disposed on both sides of the dust baffle (10), and the connecting rods (111) are rotatably connected to the inner wall of the main body (1). An arc-shaped block (112) is disposed at the top of the dust baffle (10), and a rotating rod (113) is fixed on one side of the arc-shaped block (112). A sliding plate (114) is rotatably connected to the rotating rod (113). A torsion spring (115) is disposed between the sliding plate (114) and the main body (1). One end of the torsion spring (115) is fixedly connected to the inner wall of the main body (1), and the other end of the torsion spring (115) is fixedly connected to one side of the sliding plate (114).

2. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 1, characterized in that: The internal cleaning component includes a fan (501) disposed inside the frame (4), the fan (501) having a rotating shaft (502) passing through it, a connector (503) fixed at the bottom of the rotating shaft (502), rotating rings (504) fixed on both sides of the connector (503), multiple scraping wires (505) fixed at equal angles at the top of the rotating rings (504), a turntable (506) fixed at the top of the rotating shaft (502), an eccentric shaft (507) fixed at the top of the turntable (506), and a striking element (508) slidably connected to the outer wall of the eccentric shaft (507).

3. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 2, characterized in that: The scraping wire (505) is disposed in the gap between the frame (4) and the filter bag (12), and the top end of the scraping wire (505) is fixedly connected to the top end of the frame (4). The inner wall of the frame (4) is symmetrically fixed with slide rails (509). The striking element (508) is slidably connected to the slide rail (509). The slide rail (509) has a cavity that cooperates with the movement of the striking element (508).

4. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 1, characterized in that: The external cleaning component includes a lead screw (701) fixedly connected to the output end of the motor. The outer wall of the lead screw (701) is connected to a lifting rod (702) by a thread, and the lifting rod (702) is slidably limited to the main body (1). A connecting plate (703) is fixed to the top of the lifting rod (702). A limit block (704) is slidably connected to the top of the connecting plate (703). A fixing block (705) is fixed to the top of the limit block (704). A fixing shaft (706) is fixed to one side of the fixing block (705). A limit plate (707) is slidably connected to the fixing shaft (706).

5. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 4, characterized in that: The top of the connecting plate (703) has a cavity that moves with the limiting block (704). One side of the fixing block (705) is fixedly connected to the lifting plate (6). The bottom of the limiting plate (707) is fixedly connected to the main body (1), and the limiting plate (707) has a Z-shaped cavity that moves with the fixing shaft (706).

6. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 1, characterized in that: The adjustment assembly includes a movable frame (801) fixedly connected to an electric push rod. The movable frame (801) is slidably connected to the lifting plate (6) and the top of the movable frame (801) is slidably connected to the fixed block (705). The movable frame (801) is composed of multiple vertical rods and horizontal rods. A connecting block (802) is slidably connected to one side of the vertical rod of the movable frame (801). A sliding frame (804) is fixed to one side of the connecting block (802), and the protruding part of the sliding frame (804) is fixedly connected to the cleaning ring (9).

7. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 6, characterized in that: The lifting plate (6) has a cavity inside that moves with the movable frame (801) and the sliding frame (804). The contact surfaces of the movable frame (801) and the connecting block (802) are both inclined. The vertical rod of the movable frame (801) is located between the two sliding frames (804), and the vertical rod of the outermost movable frame (801) is located between the sliding frame (804) and the inner wall of the cavity opened by the lifting plate (6).

8. The environmentally friendly dust recovery equipment based on a concrete mixing plant according to claim 6, characterized in that: A spring (803) is provided between each pair of sliding frames (804), and a spring (803) is provided between one side of the outermost sliding frame (804) and the inner wall of the cavity opened by the lifting plate (6).

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