A double-layer anti-clogging ash discharge valve

Abstract

This utility model relates to the technical field of ash discharge valves, specifically a double-layer anti-clogging ash discharge valve, including an upper ash discharge valve and a lower ash discharge valve, as well as a storage pipe, a cleaning mechanism, and a vibration mechanism. The bottom end of the upper ash discharge valve is connected to the top end of the storage pipe, and the top end of the lower ash discharge valve is connected to the bottom end of the storage pipe. Through the cooperation of the upper ash discharge valve, the lower ash discharge valve, and the storage pipe, a storage cavity is formed inside the storage pipe. The cleaning mechanism is installed on the storage pipe and is used to scrape the inner wall of the storage pipe, reducing the possibility of material accumulation and bridging on the inner wall of the storage pipe. The cleaning mechanism rotates and engages with the annular groove on the inner wall of the storage pipe through a rotating ring, driving two sets of actuating plates to slide and adhere along the inner wall of the storage pipe. This structure can perform real-time comprehensive scraping of the inner wall of the storage pipe, directly removing dust that is about to accumulate or has just begun to adhere, blocking the formation path of dust accumulation and bridging from the source, and avoiding feeding interruption due to channel blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of ash discharge valves, specifically a double-layer anti-clogging ash discharge valve. Background Technology

[0002] Ash discharge valves, as key unloading components in dust removal equipment, pneumatic conveying systems, and other powder conveying equipment, are widely used in industries such as power, building materials, chemicals, and metallurgy. Their core function is to ensure continuous unloading while maintaining the airtightness of the equipment, preventing external air from leaking in or internal airflow from escaping.

[0003] Currently, the most commonly used ash discharge valves in industry are double-layer ash discharge valves. A double-layer ash discharge valve consists of two material conveying valves stacked one on top of the other, with an ash storage silo in between. During operation, the upper and lower valves work in coordination, limiting material levels or time intervals. When the upper valve opens, the lower valve closes, allowing material to enter the ash storage silo through the upper valve. Then, the upper valve closes, and the lower valve opens, discharging material from the ash storage silo through the lower valve. The two valves are always in an open-closed state to ensure the ash discharge system is airtight.

[0004] A search revealed a utility model patent in China with publication number CN214578900U, which discloses an automatic double-layer ash discharge valve for a sintering machine. This valve is easy to operate, highly automated, and provides stable performance. It includes an upper chamber and a lower chamber. However, existing double-layer ash discharge valves commonly suffer from clogging problems when handling dust with high moisture content, uneven particle size, or a certain degree of stickiness (such as fly ash, cement ash, and boiler bottom ash). Clogging typically occurs in the feed channel between the upper and lower valve chambers. Dust easily accumulates and bridges on the inner wall of the channel, leading to poor feeding and requiring machine shutdown for cleaning. This reduces discharge efficiency and significantly impacts the continuity and stability of production. Therefore, a double-layer anti-clogging ash discharge valve is needed to solve the aforementioned problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a double-layer anti-clogging ash discharge valve to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a double-layer anti-clogging ash discharge valve, including an upper ash discharge valve and a lower ash discharge valve, and also including a storage pipe, a cleaning mechanism and a vibration mechanism. The bottom end of the upper ash discharge valve is connected to the top end of the storage pipe, and the top end of the lower ash discharge valve is connected to the bottom end of the storage pipe. Through the cooperation of the upper ash discharge valve, the lower ash discharge valve and the storage pipe, a storage cavity is formed inside the storage pipe. The cleaning mechanism is installed on the storage pipe and is used to scrape the inner wall of the storage pipe to reduce the possibility of material accumulation and bridging on the inner wall of the storage pipe. The vibration mechanism is installed on the outer wall of the storage pipe and can make the storage pipe vibrate, further reducing the possibility of material accumulation and bridging on the inner wall of the storage pipe.

[0007] The cleaning mechanism includes a connecting block, two sets of levers, a rotating ring, two sets of limiting rings, a toothed ring, and a drive mechanism. An annular groove is provided on the inner wall of the storage tube. The rotating ring is rotatably connected to the annular groove. Annular rotating slots are provided at both the top and bottom of the annular groove. The inner ends of the two sets of limiting rings are connected to the top and bottom of the rotating ring, respectively. The two sets of limiting rings are rotatably connected to the two sets of annular rotating slots, respectively. The inner wall of the toothed ring is connected to the outer wall of the rotating ring. The toothed ring is located within the annular groove. The connecting block is connected to the inner wall of the rotating ring. The two sets of levers are connected to the bottom and top of the connecting block, respectively. Both sets of levers slide against the inner wall of the storage tube. The drive mechanism is installed on the storage tube and is used to drive the toothed ring to rotate.

[0008] Preferably, the vibration mechanism includes a mounting plate, a first motor, two sets of fixed plates, a drive shaft, a turntable, a lever, an impact rod, a support plate, a spring, and an impact ball. The mounting plate is connected to the outer wall of the storage tube, the two sets of fixed plates are connected to the top of the mounting plate, the two ends of the drive shaft are rotatably connected to the inner ends of the two sets of fixed plates, the first motor is connected to one of the fixed plates, the output end of the first motor is connected to the drive shaft, the center of the turntable is connected to the drive shaft, and the turntable is located between the two sets of fixed plates. The lever is connected to the outer wall of the turntable, the support plate is connected to the top of the mounting plate, the impact rod is slidably connected to the support plate, a groove is provided at the bottom of the impact rod near the turntable, the lever is slidably connected to the groove, and one end of the lever is slidably attached to the end of the groove away from the support plate. The impact ball is connected to the end of the impact rod near the storage tube, the spring is fitted to the impact rod, and the two ends of the spring are respectively connected to the support plate and the impact ball. The vibration of the storage tube is achieved by the impact ball striking the outer wall of the storage tube.

[0009] Preferably, the driving mechanism includes a second motor, a connecting plate, a rotating shaft, and a gear. The connecting plate is connected to the outer wall of the storage tube, the rotating shaft is rotatably connected to the connecting plate, the second motor is connected to the top of the connecting plate, the output end of the second motor is connected to the rotating shaft, the annular groove is provided with a through hole, the gear part is located in the through hole, and the gear meshes with the gear ring.

[0010] Preferably, the inner wall of the storage pipe is funnel-shaped, and the diameter of the hole gradually increases from top to bottom. The bottom discharge port of the upper ash discharge valve and the top inlet port of the lower ash discharge valve are adapted to the top and bottom of the inner wall of the storage pipe.

[0011] Preferably, the inner wall of the storage tube is provided with a polytetrafluoroethylene anti-stick coating to reduce the friction coefficient between dust and the inner wall of the channel and prevent dust from adhering and accumulating.

[0012] Preferably, a protective cover is provided on the outer wall of the storage pipe, and the second motor and gear are both located inside the protective cover.

[0013] Preferably, it also includes an impact block, which is connected to the outer wall of the storage pipe, and the end of the impact ball away from the support plate is in close contact with the impact block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The cleaning mechanism uses a rotating ring that rotates in conjunction with an annular groove on the inner wall of the storage tube, causing two sets of baffles to slide and adhere to the inner wall of the storage tube. This structure can thoroughly scrape the inner wall of the storage tube in real time, directly removing dust that is about to accumulate or has just begun to adhere, blocking the path of dust accumulation and bridging at the source, and avoiding feeding interruptions caused by channel blockage.

[0016] The vibration mechanism is installed on the outer wall of the storage pipe, which can generate small-amplitude high-frequency vibrations throughout the pipe. On the one hand, it can cause the dust that has initially adhered to the inner wall of the storage pipe to fall off due to vibration, further reducing the workload of the cleaning mechanism; on the other hand, it can break the adsorption force between dust particles, prevent dust from forming bridges due to sticky agglomeration, and effectively weaken its adhesion to the pipe wall. Together with the cleaning mechanism, it forms a synergistic anti-clogging effect of "scraping + vibration", significantly improving the material blockage resolution rate.

[0017] The probability of material blockage can be significantly reduced by using vibration and cleaning mechanisms, thereby reducing unplanned downtime caused by cleaning blockages.

[0018] The storage pipe, connected to the upper and lower ash discharge valves, forms an independent storage chamber. The cleaning mechanism's rotating ring and annular groove, along with the limiting ring and annular rotating groove, employ a "rotational sealing" design. This design ensures flexible rotation of the rotating ring while preventing internal airflow leakage through the rotation gap or external air leakage into the storage chamber via the fitting structure of the annular groove and limiting ring. This design achieves anti-clogging functionality while fully retaining the core advantage of the existing double-layer ash discharge valve's "two valves, one open and one closed, maintaining airtightness," ensuring stable internal pressure during unloading and preventing a decrease in airtightness due to structural innovation. By reducing material blockage, the probability of mechanical failure due to blockage is reduced, extending the service life of core components such as the upper and lower ash discharge valves, reducing equipment maintenance frequency, ensuring stable production process operation, and avoiding production delays caused by equipment failure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connecting block and the dial plate of this utility model and their connection structure;

[0021] Figure 3 This is a schematic diagram of the annular groove structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the slide groove, lever, and their connection structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the toothed ring and gear and their connection structure of this utility model.

[0024] Reference numerals in the attached drawings: 1. Upper ash discharge valve; 2. Lower ash discharge valve; 3. Storage pipe; 4. Connecting block; 5. Paddle plate; 6. Rotating ring; 7. Limiting ring; 8. Gear ring; 9. Annular groove; 10. Annular rotating groove; 11. Mounting plate; 12. First motor; 13. Fixing plate; 14. Drive shaft; 15. Turntable; 16. Paddle lever; 17. Impact rod; 18. Support plate; 19. Spring; 20. Impact ball; 21. Slide groove; 22. Second motor; 23. Connecting plate; 24. Rotating shaft; 25. Gear; 26. Through hole; 27. PTFE anti-stick coating; 28. Protective cover; 29. ​​Impact block. Detailed Implementation

[0025] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please see Figures 1-5 A double-layer anti-clogging ash discharge valve includes an upper ash discharge valve 1 and a lower ash discharge valve 2, as well as a storage pipe 3, a cleaning mechanism, and a vibration mechanism. The bottom end of the upper ash discharge valve 1 is connected to the top end of the storage pipe 3, and the top end of the lower ash discharge valve 2 is connected to the bottom end of the storage pipe 3. Through the cooperation of the upper ash discharge valve 1, the lower ash discharge valve 2, and the storage pipe 3, a storage cavity is formed inside the storage pipe 3. The cleaning mechanism is installed on the storage pipe 3 and is used to scrape the inner wall of the storage pipe 3 to reduce the possibility of material accumulation and bridging on the inner wall of the storage pipe 3. The vibration mechanism is installed on the outer wall of the storage pipe 3 and can make the storage pipe 3 vibrate to further reduce the possibility of accumulation and bridging on the inner wall of the storage pipe 3.

[0027] The cleaning mechanism includes a connecting block 4, two sets of levers 5, a rotating ring 6, two sets of limiting rings 7, a toothed ring 8, and a driving mechanism. The inner wall of the storage tube 3 is provided with an annular groove 9. The rotating ring 6 is rotatably connected to the annular groove 9. The top and bottom ends of the annular groove 9 are provided with annular rotating grooves 10. The inner ends of the two sets of limiting rings 7 are respectively connected to the top and bottom ends of the rotating ring 6. The two sets of limiting rings 7 are respectively rotatably connected to the two sets of annular rotating grooves 10. The inner wall of the toothed ring 8 is connected to the outer wall of the rotating ring 6. The toothed ring 8 is located in the annular groove 9. The connecting block 4 is connected to the inner wall of the rotating ring 6. The two sets of levers 5 are respectively connected to the bottom and top ends of the connecting block 4. Both sets of levers 5 are slidably attached to the inner wall of the storage tube 3. The driving mechanism is installed on the storage tube 3 and is used to drive the toothed ring 8 to rotate.

[0028] The cleaning mechanism rotates and engages with the annular groove 9 on the inner wall of the storage tube 3, causing two sets of baffles 5 to slide and adhere to the inner wall of the storage tube 3. This structure can thoroughly scrape the inner wall of the storage tube 3 in real time, directly removing dust that is about to accumulate or has just begun to adhere, blocking the path of dust accumulation and bridging at the source, and avoiding feeding interruptions caused by channel blockage.

[0029] The vibration mechanism is installed on the outer wall of the storage pipe 3, which can cause the entire storage pipe 3 to vibrate at a small amplitude and high frequency. On the one hand, it can cause the dust that has initially adhered to the inner wall of the storage pipe 3 to fall off due to vibration, further reducing the workload of the cleaning mechanism; on the other hand, it can destroy the adsorption force between dust particles, prevent dust from forming bridges due to sticky agglomeration, and effectively weaken its adhesion to the pipe wall. Together with the cleaning mechanism, it forms a synergistic anti-clogging effect of "scraping + vibration", which significantly improves the material blockage resolution rate.

[0030] The probability of material blockage can be significantly reduced by using vibration and cleaning mechanisms, thereby reducing unplanned downtime caused by cleaning blockages.

[0031] The storage pipe 3, connected to the upper ash discharge valve 1 and the lower ash discharge valve 2, forms an independent storage chamber. The rotating ring 6 of the cleaning mechanism, in conjunction with the annular groove 9 and the limiting ring 7 with the annular rotating groove 10, employs a "rotational sealing" design. This design ensures the flexible rotation of the rotating ring 6 while preventing internal airflow from leaking through the rotation gap or external air from entering the storage chamber through the fitting structure of the annular groove 9 and the limiting ring 7. This design, while achieving anti-clogging functionality, fully retains the core advantage of the existing double-layer ash discharge valve's "two valves, one open and one closed, maintaining airtightness," ensuring stable internal pressure during unloading and avoiding a decrease in airtightness due to structural innovation. By reducing material blockage, the probability of mechanical failure due to blockage can be reduced, extending the service life of core components such as the upper ash discharge valve 1 and the lower ash discharge valve 2, reducing equipment maintenance frequency, ensuring stable production process operation, and avoiding production plan delays due to equipment failure.

[0032] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5The vibration mechanism includes a mounting plate 11, a first motor 12, two sets of fixed plates 13, a drive shaft 14, a turntable 15, a lever 16, an impact rod 17, a support plate 18, a spring 19, and an impact ball 20. The mounting plate 11 is connected to the outer wall of the storage pipe 3. The two sets of fixed plates 13 are connected to the top of the mounting plate 11. The two ends of the drive shaft 14 are rotatably connected to the inner ends of the two sets of fixed plates 13. The first motor 12 is connected to one of the fixed plates 13, and the output end of the first motor 12 is connected to the drive shaft 14. The center of the turntable 15 is connected to the drive shaft 14, and the turntable 15 is located between the two sets of fixed plates 13. The lever 16 is connected to the outer wall of the turntable 15, the support plate 18 is connected to the top of the mounting plate 11, the impact rod 17 is slidably connected to the support plate 18, the bottom end of the impact rod 17 is provided with a groove 21 near the turntable 15, the lever 16 is slidably connected to the groove 21, and one end of the lever 16 is slidably attached to the end of the groove 21 away from the support plate 18, the impact ball 20 is connected to the end of the impact rod 17 near the storage tube 3, the spring 19 is fitted with the impact rod 17, and the two ends of the spring 19 are respectively connected to the support plate 18 and the impact ball 20. The impact ball 20 impacts the outer wall of the storage tube 3 to achieve vibration of the storage tube 3.

[0033] The first motor 12 drives the drive shaft 14, turntable 15, and lever 16 to rotate. When the lever 16 slides in the groove 21 of the impact rod 17, it can drive the impact rod 17 to slide back and forth along the support plate 18. With the elastic reset action of the spring 19, the impact ball 20 impacts the outer wall of the storage tube 3 at high frequency. This mechanical transmission vibration design can ensure that the dust that has initially adhered to the inner wall of the storage tube 3 is efficiently removed, further reducing the scraping load of the cleaning mechanism and forming a more reliable "scraping + vibration" collaborative anti-clogging system with the cleaning mechanism. The high-frequency vibration generated by the vibration mechanism can directly destroy the adsorption force between dust particles, prevent dust from forming bridges due to sticky agglomeration, and weaken the adhesion force between dust and the tube wall. It blocks the clogging path from two dimensions: "active scraping" and "passive shaking". The clogging resolution rate is significantly improved compared with a single cleaning mechanism.

[0034] Please see Figure 2 , Figure 3 and Figure 5 The drive mechanism includes a second motor 22, a connecting plate 23, a rotating shaft 24, and a gear 25. The connecting plate 23 is connected to the outer wall of the storage tube 3, the rotating shaft 24 is rotatably connected to the connecting plate 23, the second motor 22 is connected to the top of the connecting plate 23, and the output end of the second motor 22 is connected to the rotating shaft 24. The annular groove 9 is provided with a through hole 26, and part of the gear 25 is located in the through hole 26. The gear 25 meshes with the gear ring 8.

[0035] The second motor 22 drives the rotating shaft 24 and gear 25 to rotate. The gear 25 meshes with the gear ring 8, causing the rotating ring 6 to rotate, which in turn causes the scraper plate 5 to slide and scrape along the inner wall of the storage tube 3. Compared with belt drives, this gear 25 transmission method has the advantages of high transmission efficiency and stable speed, ensuring that the scraper plate 5 always maintains a uniform scraping speed and avoiding incomplete scraping of some areas due to speed fluctuations. From the power source level, it ensures that the cleaning mechanism can fully cover and scrape the inner wall of the storage tube 3, further reducing the possibility of dust accumulation and bridging. The second motor 22, connecting plate 23 and other components of the drive mechanism are installed on the outer wall of the storage tube 3, away from the dusty environment inside the storage chamber. This reduces the corrosion of the second motor 22, gear 25 and other core drive components by dust, and reduces the probability of mechanical failure of the drive mechanism. At the same time, the external installation structure makes it easy for staff to inspect or replace the motor and gear 25 without disassembling the storage tube 3, which greatly shortens maintenance time and reduces the frequency of unplanned downtime.

[0036] Please see Figure 1 and Figure 3 The inner wall of the storage pipe 3 is funnel-shaped, and the diameter of the inner wall of the storage pipe 3 gradually increases from top to bottom. The bottom discharge port of the upper ash valve 1 and the top inlet port of the lower ash valve 2 are adapted to the top and bottom of the inner wall of the storage pipe 3.

[0037] The inner wall of the storage pipe 3 is funnel-shaped, with the diameter gradually increasing from top to bottom. This structure conforms to the flow characteristics of powder—after entering the storage pipe 3 from the upper discharge valve 1, the dust can slide naturally down the inclined inner wall, avoiding dust accumulation in local areas due to a uniform or narrowed inner diameter of the channel. The funnel-shaped structure reduces the probability of large dust particles getting stuck in the channel, improving the overall material throughput efficiency and reducing the risk of blockage from the perspective of "optimizing the flow path." The funnel-shaped inner wall works synergistically with the cleaning mechanism's baffle 5 and vibration mechanism—when the baffle 5 slides and scrapes along the inclined inner wall, it can directly guide the scraped dust to the lower discharge valve 2, reducing the accumulation of dust at the bottom of the storage pipe 3 after scraping; at the same time, the vibration generated by the vibration mechanism can further accelerate the sliding speed of dust along the inclined inner wall, preventing secondary adhesion of dust after scraping. This combination of "structural guidance + active scraping + vibration assistance" makes the anti-clogging effect more comprehensive, especially for the bottom area of ​​the storage pipe 3 where material is prone to accumulation, significantly improving the material clogging resolution rate. The bottom discharge port of the upper ash discharge valve 1 and the top inlet port of the lower ash discharge valve 2 are adapted to the top and bottom of the inner wall of the storage pipe 3, which can reduce the "dead corner accumulation" of material at the connection between the valve and the storage pipe 3, avoid dust retention due to excessive gaps or structural mismatch at the connection, further block the path of material blockage, and ensure the continuity of the unloading process.

[0038] Please see Figure 3The inner wall of the storage pipe 3 is coated with a polytetrafluoroethylene (PTFE) anti-stick coating 27 to reduce the friction coefficient between dust and the inner wall of the channel, preventing dust adhesion and accumulation. PTFE has an extremely low friction coefficient and excellent anti-stick properties. After this coating is applied to the inner wall of the storage pipe 3, the friction coefficient between dust, especially sticky fly ash and cement ash, and the pipe wall can be significantly reduced, making it difficult for dust to adhere to the pipe wall surface. Even if a small amount of dust initially contacts the pipe wall, it will naturally slide off due to the anti-stick properties of the coating, reducing the "initial adhesion point" of dust accumulation from the source, reducing the scraping pressure of the cleaning mechanism, and reducing the amount of dust that the vibration mechanism needs to shake off, thus extending the service life of both the cleaning and vibration mechanisms.

[0039] The PTFE coating also possesses excellent wear and corrosion resistance, withstanding the friction of long-term sliding and scraping by the scraper 5, and resisting the erosion of the inner wall of the storage pipe 3 by corrosive dusts in the chemical industry, such as acidic dust. This characteristic extends the service life of the storage pipe 3, reduces the problem of increased dust adhesion due to surface roughness caused by pipe wall wear, ensures long-term stable anti-sticking effect, and avoids recurrence of material blockage due to coating failure. Due to the anti-sticking effect of the coating, stubborn dust accumulation is not easily formed on the inner wall of the storage pipe 3. Even if a small amount of accumulation occurs, it is easy for the cleaning mechanism to quickly scrape and remove it, reducing the frequency of manual cleaning of the inner wall of the storage pipe 3. At the same time, the smooth surface of the coating is not prone to the growth of bacteria or debris, making it particularly suitable for industries with high hygiene requirements such as food and pharmaceuticals. Expanding the application scenarios can further reduce the cleaning and maintenance costs of the equipment.

[0040] Please see Figure 1 The outer wall of the storage pipe 3 is provided with a protective cover 28, and the second motor 22 and gear 25 are both located inside the protective cover 28;

[0041] The protective cover 28 completely encloses the second motor 22 and gear 25, effectively preventing dust, moisture, and debris from the external environment from entering the drive mechanism. This avoids dust adhering to the gear teeth 25, causing poor meshing, or moisture corroding the motor, leading to short circuits, rust, and other malfunctions. For applications with high dust concentrations, such as those in the power and building materials industries, this protective design significantly reduces the probability of drive mechanism failure, ensuring the continuous and stable operation of the cleaning mechanism and further guaranteeing the reliability of the anti-clogging function. The protective cover 28 prevents workers from accidentally touching the rotating gear 25 or motor during equipment operation, avoiding mechanical injury accidents. Simultaneously, it reduces the outward transmission of noise generated during drive mechanism operation, improving the working environment and complying with industrial equipment safety design specifications.

[0042] Please see Figure 1 , Figure 2 and Figure 4It also includes an impact block 29, which is connected to the outer wall of the storage tube 3. The end of the impact ball 20 away from the support plate 18 is in close contact with the impact block 29. The impact block 29 is usually made of a material with lower hardness than the storage tube 3 but higher toughness, such as wear-resistant rubber or alloy. This can reduce the direct rigid impact of the impact ball 20 on the outer wall of the storage tube 3, avoid damage such as dents and cracks in the storage tube 3 due to long-term impact, and extend the service life of the storage tube 3. At the same time, the impact block 29 can be replaced periodically as a wear part, which is less costly than replacing the entire storage tube 3.

[0043] In summary, when using this double-layer anti-clogging ash discharge valve, before starting the equipment, the upper ash discharge valve 1 and the lower ash discharge valve 2 are in the initial state of "upper valve closed, lower valve closed". The operator needs to check whether the connection between the storage pipe 3 and the upper ash discharge valve 1 and the lower ash discharge valve 2 is sealed to ensure that a closed storage chamber is formed in the storage pipe 3; at the same time, check whether the rotating ring 6 of the cleaning mechanism rotates flexibly with the annular groove 9 and whether the limiting ring 7 slides normally in the annular rotating groove 10 to ensure that the "rotation sealing" structure has no gaps or leaks, laying the foundation for airtightness during the subsequent unloading process.

[0044] According to the conventional working logic of the double-layer ash discharge valve, the upper ash discharge valve 1 is opened first, and the lower ash discharge valve 2 is closed. At this time, dust such as fly ash and cement ash in the dust removal equipment or powder conveying system enters the storage chamber of the storage pipe 3 through the discharge port of the upper ash discharge valve 1, and the dust gradually accumulates downward under the action of gravity.

[0045] Simultaneously with feeding, the drive mechanism of the cleaning mechanism is activated. The drive mechanism drives the toothed ring 8 to rotate, which in turn causes the rotating ring 6 connected to the toothed ring 8 to rotate along the annular groove 9 on the inner wall of the storage tube 3. When the rotating ring 6 rotates, the connecting block 4 connected to its inner wall simultaneously drives the two sets of baffles 5 to slide and adhere along the inner wall of the storage tube 3. The upper baffle 5 scrapes the inner wall of the upper half of the storage tube 3, and the lower baffle 5 scrapes the inner wall of the lower half of the storage tube 3, removing dust that is about to accumulate or has just begun to adhere in real time, preventing dust from accumulating along the tube wall and forming bridges during the feeding process.

[0046] Simultaneously, the vibration mechanism installed on the outer wall of the storage pipe 3 is activated. The vibration mechanism uses impact balls 20 to strike the outer wall of the storage pipe 3 at high frequency, causing the entire storage pipe 3 to vibrate at a small amplitude. On the one hand, the vibration can remove the dust that has initially adhered to the inner wall of the storage pipe 3, reducing the scraping load of the scraper plate 5; on the other hand, the vibration breaks the adsorption force between dust particles, preventing dust from forming bridges due to sticky agglomeration. This, together with the scraping action of the cleaning mechanism, forms a synergistic anti-clogging effect of "scraping + vibration", ensuring that dust accumulates smoothly in the storage chamber without local stagnation.

[0047] When the dust in the storage pipe 3 accumulates to the preset material level or reaches the preset feeding time, the upper ash discharge valve 1 closes and the lower ash discharge valve 2 opens. Under the action of gravity, the dust in the storage chamber enters the lower ash discharge valve 2 through the bottom end of the storage pipe 3, and is finally discharged to the subsequent conveying system through the lower ash discharge valve 2.

[0048] During the discharge process, the cleaning mechanism and the vibration mechanism continue to operate. The baffle plate 5 continues to slide and scrape along the inner wall of the storage pipe 3 to remove dust that may remain during the discharge process, especially the dust at the connection between the bottom of the storage pipe 3 and the lower ash discharge valve 2, so as to avoid the accumulation of residual dust after discharge. The vibration mechanism continues to vibrate, which on the one hand helps the residual dust to slide down the inner wall of the storage pipe 3 to the lower ash discharge valve 2, and on the other hand prevents the dust from adhering to the inner wall of the storage pipe 3 again during the discharge process, so as to ensure that there is no obvious dust residue on the inner wall of the storage pipe 3 after the discharge is completed.

[0049] Once the ash discharge valve 2 finishes discharging material and the dust in the storage chamber is emptied, or the preset discharge time is reached, the lower ash discharge valve 2 closes, and the upper ash discharge valve 1 reopens, entering the next cycle of "upper valve open, lower valve closed for feeding → upper valve closed, lower valve open for discharging." Throughout the cycle, the rotating ring 6 rotates flexibly to ensure that the scraper plate 5 scrapes normally. At the same time, the fitting structure of the annular groove 9 with the rotating ring 6 and the annular rotating groove 10 with the limiting ring 7 effectively prevents the airflow in the storage chamber from leaking out through the rotation gap, and also prevents external air from leaking into the storage chamber. This fully retains the core advantage of "two valves, one open and one closed, maintaining airtightness" and ensures stable internal pressure of the equipment.

[0050] The first motor 12 and the second motor 22 are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, so we will not go into detail here. The first motor 12 and the second motor 22 are equipped with matching control switches. The installation position of the control switches is selected according to actual usage requirements to facilitate operation and control by the operator.

[0051] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0052] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0053] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double layer anti-clogging dust discharging valve comprising an upper dust discharging valve (1) and a lower dust discharging valve (2), characterized in that, Also includes: The storage pipe (3), cleaning mechanism and vibration mechanism are connected. The bottom end of the upper ash discharge valve (1) is connected to the top end of the storage pipe (3), and the top end of the lower ash discharge valve (2) is connected to the bottom end of the storage pipe (3). Through the cooperation of the upper ash discharge valve (1), the lower ash discharge valve (2) and the storage pipe (3), a storage cavity is formed inside the storage pipe (3). The cleaning mechanism is installed on the storage pipe (3). The cleaning mechanism is used to scrape the inner wall of the storage pipe (3) to reduce the possibility of material accumulation and bridging on the inner wall of the storage pipe (3). The vibration mechanism is installed on the outer wall of the storage pipe (3). The vibration mechanism can make the storage pipe (3) vibrate, further reducing the possibility of accumulation and bridging on the inner wall of the storage pipe (3). The cleaning mechanism includes a connecting block (4), two sets of levers (5), a rotating ring (6), two sets of limiting rings (7), a toothed ring (8), and a driving mechanism. The inner wall of the storage tube (3) is provided with an annular groove (9). The rotating ring (6) is rotatably connected to the annular groove (9). The top and bottom ends of the annular groove (9) are provided with annular rotating grooves (10). The inner ends of the two sets of limiting rings (7) are respectively connected to the top and bottom ends of the rotating ring (6). The two sets of limiting rings (7) are respectively rotatably connected to the two sets of annular rotating grooves (10). The inner wall of the toothed ring (8) is connected to the outer wall of the rotating ring (6). The toothed ring (8) is located in the annular groove (9). The connecting block (4) is connected to the inner wall of the rotating ring (6). The two sets of levers (5) are respectively connected to the bottom and top ends of the connecting block (4). The two sets of levers (5) are slidably attached to the inner wall of the storage tube (3). The driving mechanism is installed on the storage tube (3) and is used to drive the toothed ring (8) to rotate.

2. The dual layer anti-clogging hopper gate valve of claim 1, wherein: The vibration mechanism includes a mounting plate (11), a first motor (12), two sets of fixed plates (13), a drive shaft (14), a turntable (15), a lever (16), an impact rod (17), a support plate (18), a spring (19), and an impact ball (20). The mounting plate (11) is connected to the outer wall of the storage pipe (3), the two sets of fixed plates (13) are connected to the top of the mounting plate (11), the two ends of the drive shaft (14) are rotatably connected to the inner ends of the two sets of fixed plates (13), the first motor (12) is connected to one of the sets of fixed plates (13), the output end of the first motor (12) is connected to the drive shaft (14), the center of the turntable (15) is connected to the drive shaft (14), and the turntable (15) is located between the two sets of fixed plates (13). The rod (16) is connected to the outer wall of the turntable (15), the support plate (18) is connected to the top of the mounting plate (11), the impact rod (17) is slidably connected to the support plate (18), the bottom end of the impact rod (17) is provided with a groove (21) near the turntable (15), the lever (16) is slidably connected to the groove (21), and one end of the lever (16) is slidably attached to the end of the groove (21) away from the support plate (18), the impact ball (20) is connected to the end of the impact rod (17) near the storage tube (3), the spring (19) is fitted with the impact rod (17), and the two ends of the spring (19) are respectively connected to the support plate (18) and the impact ball (20). The impact ball (20) impacts the outer wall of the storage tube (3) to achieve vibration of the storage tube (3).

3. A dual layer anti-jamming hopper gate valve according to claim 2, wherein: The drive mechanism includes a second motor (22), a connecting plate (23), a rotating shaft (24), and a gear (25). The connecting plate (23) is connected to the outer wall of the storage pipe (3), the rotating shaft (24) is rotatably connected to the connecting plate (23), the second motor (22) is connected to the top of the connecting plate (23), the output end of the second motor (22) is connected to the rotating shaft (24), the annular groove (9) is connected to a through hole (26), the gear (25) is located in the through hole (26), and the gear (25) meshes with the gear ring (8).

4. A dual layer anti-jamming hopper gate valve according to claim 3, wherein: The inner wall of the storage pipe (3) is funnel-shaped, and the diameter of the inner wall of the storage pipe (3) gradually increases from top to bottom. The bottom discharge port of the upper ash valve (1) and the top feed port of the lower ash valve (2) are adapted to the top and bottom of the inner wall of the storage pipe (3).

5. A dual layer anti-jamming hopper gate valve according to claim 4, wherein: The inner wall of the storage pipe (3) is provided with a polytetrafluoroethylene anti-stick coating (27) to reduce the friction coefficient between dust and the inner wall of the channel and prevent dust from adhering and accumulating.

6. A dual layer anti-jamming hopper gate valve according to claim 5, wherein: The outer wall of the storage pipe (3) is provided with a protective cover (28), and the second motor (22) and gear (25) are both located inside the protective cover (28).

7. A dual layer anti-jamming hopper gate valve according to claim 6, wherein: It also includes an impact block (29), which is connected to the outer wall of the storage pipe (3), and the end of the impact ball (20) away from the support plate (18) is in close contact with the impact block (29).

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