A sodium carbonate discharge device

Abstract

The present application relates to the technical field of sodium carbonate discharge, and particularly relates to a sodium carbonate discharge device; the device comprises a cyclone separation bin arranged above the ground through a bin supporting leg; a central gas-lifting pipe is coaxially arranged in the inner center of the cyclone separation bin, and the central gas-lifting pipe is fixed with the cyclone separation bin through an annular partition plate; the inner side of a tangential gas inlet pipe is connected with an arc-shaped rubber tube, the other end of the arc-shaped rubber tube is provided with a fixing frame, a switching cylinder is vertically arranged on the upper side of the cyclone separation bin, and the switching cylinder is connected with the fixing frame through the annular partition plate; in a gas-solid separation working condition, the switching cylinder is in an elongated state, the fixing frame is driven to tilt the gas outlet end of the arc-shaped rubber tube downward; in a discharge working condition, the switching cylinder is retracted, the fixing frame is driven to switch the gas outlet end of the arc-shaped rubber tube to be upwardly inclined; the present application solves the technical problem of how to switch different internal flow field patterns in the feeding and discharging working conditions, and can realize both gas-solid separation and auxiliary discharging during discharging.

Description

Technical Field

[0001] This invention relates to the field of sodium carbonate unloading technology, and specifically to a sodium carbonate unloading device. Background Technology

[0002] In the production process of sodium carbonate by-products in fine chemical industry, cyclone buffer silos are widely used for the separation, collection, and buffer unloading of gas-solid two-phase materials: the gas-solid mixture enters the silo through the tangential inlet and forms a vortex. The separation of powder and tetrahydrofuran-containing tail gas is achieved by centrifugal action. The powder settles to the lower cone hopper and is then discharged from the bottom outlet by gravity. It is then sold by filling ton bags or stored in cans for internal use, thus completing the final discharge.

[0003] For ultrafine sodium carbonate by-products containing tetrahydrofuran components, the powder particles are fine, have high interparticle viscosity, and a large angle of repose. They are prone to forming stable material arches (bridging) in the conical hopper contraction section, resulting in problems such as poor material feeding and blockage of the discharge port. Simply relying on gravity feeding cannot guarantee a continuous and stable discharge rate; on the production site, manual material feeding is often used to forcibly break the arches.

[0004] Conventional cyclone buffer silos have a hollow internal structure, and the swirling flow is formed naturally by the geometry of the tangential inlet. This can only meet the gas-solid separation requirements under feeding conditions, and cannot actively control the flow field inside the silo to assist in material discharge under discharging conditions.

[0005] Therefore, the problem in the existing technology is: how to switch between different internal flow field modes under the feeding and discharging conditions so as to achieve gas-solid separation and assist in material feeding during discharging. Summary of the Invention

[0006] This invention provides a sodium carbonate unloading device, which at least solves the problem of how to switch between different internal flow field modes under feeding and discharging conditions, so as to achieve gas-solid separation and assist in material feeding during discharge.

[0007] The technical solution used in this invention is as follows: A sodium carbonate unloading device includes a cyclone separator hopper mounted on the ground via hopper legs. The lower part of the cyclone separator hopper has a conical hopper and a discharge port. A tangential air inlet pipe and a separation exhaust pipe are provided on the side of the cyclone separator hopper. An exhaust valve is provided on the separation exhaust pipe. The tangential air inlet pipe is connected to an air inlet tee. An air inlet valve is provided on one side of the air inlet tee. The air inlet tee on the side of the air inlet valve is used to connect with a gas-solid mixture of sodium carbonate as a byproduct containing tetrahydrofuran. The other side of the air inlet tee is connected to a nitrogen branch line within the plant. A central air riser is coaxially installed inside the separating silo, and the central air riser is fixed to the cyclone separating silo through an annular partition plate. The inner side of the tangential air inlet pipe is connected to the arc-shaped rubber hose, and the other end of the arc-shaped rubber hose is equipped with a fixed frame. A switching cylinder is vertically installed on the upper side of the cyclone separating silo, and the push head of the switching cylinder passes through the annular partition plate and is connected to the fixed frame. In the gas-solid separation condition, the switching cylinder is in the extended state, which drives the fixed frame to tilt the air outlet end of the arc-shaped rubber hose downward. In the discharge condition, the switching cylinder retracts, which drives the fixed frame to switch the air outlet end of the arc-shaped rubber hose to tilt upward.

[0008] Furthermore, the tangential intake pipe is located below the annular partition plate, and the separate exhaust pipe is located above the annular partition plate.

[0009] Furthermore, an adaptive scraping unit is provided below the discharge port. The adaptive scraping unit includes a disturbance chamber and a disturbance cover plate located above the disturbance chamber. A disturbance discharge port is provided inside the disturbance chamber, and a discharge gate valve is connected to the lower side of the disturbance discharge port. An installation ring is coaxially fixed on the upper side of the disturbance discharge port. The installation ring is rotatably engaged with the disturbance rotating ring through a bearing. A disturbance motor is provided on the disturbance cover plate. The output end of the disturbance motor extends downward and is fixedly connected to a disturbance gear. The disturbance gear is driven by the disturbance rotating ring through a disturbance chain. A contact sliding shaft is provided inside the disturbance rotating ring. A contact sliding plate is slidably engaged on the contact sliding shaft. A contact spring is sleeved on the contact sliding shaft. Under the elastic force of the contact spring, the contact sliding plate slides towards the disturbance rotating ring. A disturbance rod is fixedly connected to the contact sliding plate and extends upward into the cone hopper of the hopper. The contact wheel and the disturbance rod are rotatably engaged.

[0010] Furthermore, the disturbance cover plate is provided with an internal threaded interface, and the flange replacement part is detachably fitted onto the internal threaded interface. The flange replacement part includes a flange part, a guide part, and an external threaded interface part. The flange part is used to connect with the lower discharge port of the cyclone separator hopper, and the external threaded interface part is detachably fitted onto the internal threaded interface on the disturbance cover plate.

[0011] Furthermore, the disturbance ring has a toothed ring on the upper side and an assembly ring on the lower side.

[0012] Furthermore, a discharge connection unit is provided on the lower side of the adaptive scraping unit; the discharge connection unit includes a ton bag lifting platform and a lifting base plate fixed to the hopper support legs. A ton bag lifting push rod is provided on the lifting base plate, and the ton bag lifting push rod extends downward through the lifting base plate and is fixed to the ton bag lifting platform; the ton bag lifting platform serves as a supporting base plate, and an assembly port is provided in its center; a guide corrugated pipe passes through the assembly port of the ton bag lifting platform, and the upper end of the guide corrugated pipe is connected to the discharge end of the adaptive scraping unit, and the lower end of the guide corrugated pipe is provided with a double-mold discharge port; a material tank push rod is fixedly installed on the ton bag lifting platform, and a connecting ear is fixedly provided on the outer side of the double-mold discharge port, and the material tank push rod extends downward through the ton bag lifting platform and is fixed to the connecting ear; metering hooks are provided at the four corners of the lower side of the ton bag lifting platform; clamping base plates are vertically provided at both ends of the lower side of the ton bag lifting platform, and a bag mouth push rod is horizontally provided on the clamping base plate, and the push head of the bag mouth push rod extends through the clamping base plate and is fixed to the arc-shaped cross-section bag mouth clamp plate.

[0013] Furthermore, the dual-mold discharge port is a variable-diameter tubular structure, with an inclined section in the middle for docking with the powder tank; the lower side of the dual-mold discharge port is a cylindrical section, and the bag opening of the ton bag can be fitted onto the outside of this cylindrical section.

[0014] Furthermore, an air collection and recovery hole is provided on the inner side of the dual-mold discharge port, and a through air collection and recovery ring is provided on the inner wall of the dual-mold discharge port. The air collection and recovery hole is connected to the air collection and recovery ring, and the air collection and recovery ring is also equipped with an outward air collection and recovery interface.

[0015] The beneficial effects achieved by this invention are as follows: Under the condition of gas-solid separation during feeding, the inlet gate valve is opened, the nitrogen branch is closed, and the exhaust gate valve is opened simultaneously; the switching cylinder is in the extended state, driving the fixed frame to tilt the outlet end of the arc-shaped hose downward; the by-product sodium carbonate gas-solid mixture carrying tetrahydrofuran is tangentially sprayed out along the inner wall of the chamber through the tangential inlet pipe and the arc-shaped hose, forming an external vortex that spirals downward along the cylinder wall inside the chamber; the sodium carbonate powder is thrown towards the inner wall of the cylinder under the action of centrifugal force, and after the kinetic energy decays, it slides down the wall and accumulates in the lower cone, completing the gas-solid two-phase separation; the separated tetrahydrofuran-containing tail gas converges towards the center of the chamber, forming an upward internal vortex, flows along the central riser pipe, and is discharged outside the chamber through the separation exhaust pipe, realizing continuous collection of powder and primary treatment of tail gas.

[0016] Under the discharge and pressure-assisted feeding condition, the air inlet gate valve is closed, the nitrogen branch is opened, and the exhaust gate valve is closed simultaneously; the switching cylinder retracts, driving the fixed frame to switch the outlet end of the arc-shaped hose to an upward tilt; low-pressure nitrogen in the plant is sprayed upward along the inner wall of the cylinder through the tangential air inlet pipe and the arc-shaped hose. The airflow rises along the cylinder wall to the top cover of the silo and is constrained, turning back downward, forming an axially distributed airflow that is vertically downward in the silo. The downward airflow contacts the sodium carbonate powder accumulated in the cone hopper and applies a downward pushing force to the powder, causing the powder to be continuously discharged from the outlet under the combined action of gravity and airflow thrust. Under this condition, no vortex is formed in the silo, and a micro-positive pressure environment can be established in the closed cyclone separator silo to act on the surface of the material layer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sodium carbonate unloading device of the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the cyclone separator hopper of the present invention.

[0019] Figure 3 This is a schematic diagram of the arc-shaped hose switching action of the present invention.

[0020] Figure 4 This is a schematic diagram of the position of the adaptive scraping unit of the present invention.

[0021] Figure 5 This is a schematic diagram of the adaptive scraping unit structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the bonding slide plate and bonding slide shaft structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the engagement of the disturbance gear and the disturbance rotating ring of the present invention.

[0024] Figure 8 This is a schematic diagram of the disturbance cavity structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the disturbance cover structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the disturbance rod operation of the present invention.

[0027] Figure 11 This is the upper part of the material discharge connection unit of the present invention.

[0028] Figure 12 This is a schematic diagram of the lower part of the material discharge connection unit of the present invention.

[0029] Figure 13 This is a schematic diagram of the dual-mode feeding port structure of the present invention.

[0030] Figure 14 This is a schematic diagram of the powder tank filling operation of the present invention.

[0031] Figure 15 This is a schematic diagram showing the switching between ton bag filling operation and powder tank filling operation of the present invention.

[0032] In the diagram, 1. Cyclone separator hopper; 2. Hopper support leg; 3. Conical hopper; 4. Discharge port; 5. Tangential air inlet pipe; 6. Separator exhaust pipe; 7. Exhaust gate valve; 8. Air inlet tee; 9. Air inlet gate valve; 10. Central air riser pipe; 11. Annular partition plate; 12. Arc-shaped hose; 13. Fixing frame; 14. Switching cylinder; 15. Adaptive scraping unit; 16. Disturbance chamber; 17. Disturbance cover plate; 18. Disturbance discharge port; 19. Discharge gate valve; 20. Mounting ring; 21. Bearing; 22. Disturbance rotating ring; 23. Gear ring; 24. Assembly ring; 25. Disturbance motor; 26. Disturbance gear; 27. Disturbance chain; 28. Fitting slide shaft; 9. Fitting slide plate; 30. Limiting end; 31. Fitting spring; 32. Disturbance rod; 33. Fitting wheel; 34. Flange replacement part; 35. Flange part; 36. Guide part; 37. External thread interface part; 38. Discharge connection unit; 39. Ton bag lifting platform; 40. Lifting base plate; 41. Ton bag lifting push rod; 42. Assembly port; 43. Guide corrugated pipe; 44. Dual mold discharge port; 45. Inclined section; 46. Cylindrical section; 47. Material tank push rod; 48. Connecting ear; 49. Metering hook; 50. Clamping base plate; 51. Bag mouth push rod; 52. Bag mouth clamp plate; 53. Gas collection and recovery hole; 54. Gas collection and recovery ring; 55. Gas collection and recovery interface. Detailed Implementation

[0033] To facilitate understanding of the present invention by those skilled in the art, specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood through the specific circumstances.

[0035] like Figure 1-2As shown, this invention provides a sodium carbonate unloading device, including a cyclone separator hopper 1 mounted on the ground via hopper legs 2. The lower part of the cyclone separator hopper 1 has a conical hopper 3 and a discharge port 4. The side of the cyclone separator hopper 1 is provided with a tangential air inlet pipe 5 and a separation exhaust pipe 6. The separation exhaust pipe 6 is provided with an exhaust gate valve 7. The tangential air inlet pipe 5 is connected to an air inlet tee 8. One side of the air inlet tee 8 is provided with an air inlet gate valve 9. The air inlet tee 8 on the side of the air inlet gate valve 9 is used to connect with the by-product sodium carbonate gas-solid mixture containing tetrahydrofuran. The other side of the air inlet tee 8 is connected to the nitrogen branch line in the plant. A central riser pipe 10 is coaxially arranged in the center of the cyclone separator hopper 1. The central riser pipe 10 is connected to a ring branch. The partition 11 is fixed to the cyclone separator hopper 1. The tangential air inlet pipe 5 is located on the lower side of the annular partition 11, and the separation exhaust pipe 6 is located on the upper side of the annular partition 11. One end of the tangential air inlet pipe 5 extends to the inner side of the cyclone separator hopper 1 and is connected to one end of the arc-shaped rubber tube 12. The other end of the arc-shaped rubber tube 12 is equipped with a fixed frame 13. A switching cylinder 14 is vertically provided on the upper side of the cyclone separator hopper 1. The switching cylinder 14 passes through the annular partition 11 and is connected to the fixed frame 13. It is used to drive the air outlet end of the arc-shaped rubber tube 12 to adjust the position and air outlet direction. The switching cylinder 14 can switch between the two working conditions of feeding gas-solid separation and discharging pressure feeding to form different internal flow field patterns and simultaneously realize the functions of gas-solid separation and auxiliary feeding.

[0036] like Figure 3 As shown, by switching the extension and retraction of cylinder 14 in conjunction with the opening and closing of inlet gate valve 9 and exhaust gate valve 7, the system switches between two working conditions: gas-solid separation during feeding and pressure-assisted discharge. This creates different internal flow field patterns within the cyclone separator hopper 1, simultaneously achieving gas-solid separation and auxiliary discharge functions. The specific working process is as follows:

[0037] Under the gas-solid separation condition, the inlet gate valve 9 is opened, the nitrogen branch is closed, and the exhaust gate valve 7 is opened simultaneously; the switching cylinder 14 is in the extended state, which drives the fixed frame 13 to tilt the outlet end of the arc-shaped hose 12 downward; the by-product sodium carbonate gas-solid mixture carrying tetrahydrofuran is sprayed tangentially along the inner wall of the chamber through the tangential inlet pipe 5 and the arc-shaped hose 12, forming an outer vortex that spirals downward along the cylinder wall inside the chamber; the sodium carbonate powder is thrown towards the inner wall of the cylinder under the action of centrifugal force, and after the kinetic energy decays, it slides down the wall and accumulates in the lower cone hopper 3, completing the gas-solid two-phase separation; the separated tetrahydrofuran-containing tail gas converges towards the center of the chamber, forming an upward inner vortex, and flows along the central riser pipe 10 before being discharged outside the chamber through the separation exhaust pipe 6, realizing continuous collection of powder and primary treatment of tail gas.

[0038] Under the condition of material discharge with pressure, the air inlet valve 9 is closed, the nitrogen branch is opened, and the exhaust valve 7 is closed simultaneously; the switching cylinder 14 retracts, driving the fixed frame 13 to switch the outlet end of the arc-shaped hose 12 to an upward tilt; the low-pressure nitrogen in the plant is sprayed upward along the inner side of the cylinder wall through the tangential air inlet pipe 5 and the arc-shaped hose 12. The airflow rises along the cylinder wall to the top cover of the silo and is constrained and turns downward, forming an axially distributed airflow that is vertically downward in the silo. The downward airflow contacts the sodium carbonate powder accumulated in the cone hopper 3 and applies a downward pushing force to the powder, so that the powder is continuously discharged from the outlet 4 under the combined action of gravity and airflow thrust. Under this condition, no vortex is formed in the silo, and a micro-positive pressure environment can be established in the sealed cyclone separation silo 1 to act on the surface of the material layer.

[0039] This application proposes a cyclone separator hopper 1 with a steerable air distribution structure, and also configures a switching cylinder 14 with a specific structure that can drive the air outlet end of the arc-shaped rubber tube 12 to turn through telescopic movement, so as to realize the switching of the internal flow field mode under two working conditions: feeding gas-solid separation and discharging with pressure. At the same time, the cooperation method of the switching cylinder 14, the fixed frame 13 and the arc-shaped rubber tube 12 allows the airflow to rise and turn back along the hopper wall under the discharging condition to form a vertically downward axially uniform airflow across the entire cross section.

[0040] The sodium carbonate byproduct processed by this device contains tetrahydrofuran components. This material has high particle viscosity and a large angle of repose; the material easily forms stable arches at the contraction section of the cone hopper 3, causing bridging, resulting in poor material flow, blockage of the discharge port 4, and difficulty in maintaining a continuous and stable discharge rate. Traditional on-site handling methods often involve manual churning to forcibly break the arches, but this requires opening the equipment maintenance port, is labor-intensive, and cannot achieve continuous production. Meanwhile, the existing sodium carbonate storage silos in the plant have various cylinder diameters and discharge port specifications, and conventional discharge devices have fixed interfaces, making it difficult to directly adapt to the discharge ports 4 of different sized storage silos. To solve the above problems, such as... Figure 4 As shown, in this embodiment, an adaptive scraping unit 15 is further provided on the lower side of the discharge port 4. With the help of mechanical scraping, the accumulated material attached to the inner wall of the cone hopper 3 is continuously disturbed, and the material arch that is gradually formed is mechanically broken. This works in conjunction with the aforementioned nitrogen axial airflow micro-positive pressure discharge method to further improve the continuity and stability of the discharge process. In addition, the discharge connection unit 38 is provided with an adjustable and adaptable scraping structure, which can be compatible with storage bins of different diameters and discharge ports of different specifications in the plant.

[0041] like Figure 4-8As shown, the adaptive scraping unit 15 is located at the lower outlet 4 of the cyclone separator hopper 1. It includes a disturbance cavity 16 serving as the main support and transmission sealing base, and a disturbance cover 17 positioned above the disturbance cavity 16. An disturbance outlet 18 is located inside the disturbance cavity 16. A discharge gate valve 19 is connected to the lower side of the disturbance outlet 18, controlling the opening and closing of the discharge channel. A mounting ring 20 is coaxially fixed to the upper side of the disturbance outlet 18. The mounting ring 20 rotates with the disturbance rotating ring 22 via a bearing 21, allowing the disturbance rotating ring 22 to rotate coaxially relative to the mounting ring 20. The disturbance rotating ring 22 has a toothed ring 23 on its upper side and an assembly ring 24 on its lower side. The disturbance cover... A disturbance motor 25, serving as a power source, is fixedly mounted on plate 17. The output end of the disturbance motor 25 extends downward and is fixedly connected to a disturbance gear 26. The disturbance gear 26 is connected to the gear ring 23 of the disturbance rotating ring 22 via a disturbance chain 27. In this embodiment, after the disturbance motor 25 is started, the disturbance rotating ring 22 is driven to rotate relative to the mounting ring 20 by the meshing transmission of the disturbance gear 26 and the disturbance chain 27. According to the bridging characteristics of the actual material in the cone hopper 3, the motion mode of the disturbance rotating ring 22 can be set to 360° continuous rotation or to reciprocating oscillation within a certain angle range. Technicians can flexibly set it according to the actual material discharge requirements, and there is no limitation on this.

[0042] As a core improvement of this application, the fitting slide shaft 28 is horizontally fixed inside the disturbance rotating ring 22. The fitting slide shaft 28 has a non-circular cross-section (square or hexagonal, thus restricting the circumferential rotation of the fitting slide plate 29 relative to the fitting slide shaft 28, allowing it to slide only along the axial direction of the fitting slide shaft 28). The fitting slide plate 29 is slidably fitted onto the fitting slide shaft 28, and the end of the fitting slide shaft 28 is provided with a limiting end 30. The fitting spring 31 is sleeved on the fitting slide shaft 28, with one end of the fitting spring 31 abutting against the fitting slide plate 29 and the other end abutting against the limiting end 30. Under the elastic force of the fitting spring 31, the fitting slide plate 29 slides towards the disturbance rotating ring 22. The disturbance rod 32 is fixedly connected to the fitting slide plate 29 and extends upward into the inside of the hopper cone 3. The fitting wheel 33 and the disturbance rod 32 are connected to the hopper cone 22. The moving rod 32 rotates in coordination; when the disturbance ring 22 rotates, the disturbance rod 32 swings in a circle or reciprocates within the cone hopper 3, and the contact wheel 33 rolls or slides tightly against the inner wall of the cone hopper 3 under the radial compensation action of the spring, thereby ensuring that the disturbance rod 32 always disturbs the powder in the effective area close to the inner wall of the cone hopper 3, continuously destroying the forming material arch and bridging from a mechanical perspective, thereby assisting in material feeding; through the above-mentioned structure of the spring acting on the contact sliding shaft 28, this embodiment provides a radial compensation mechanism: when this device connects to cone hoppers 3 of different diameters and cross-sectional shapes, the spring can automatically compensate for the radial gap, ensuring that the contact wheel 33 always fits tightly against the inner wall of the cone hopper 3, ensuring the effective working radius of the disturbance rod 32, and greatly improving the versatility and adaptability of the equipment.

[0043] like Figure 9 As shown, the disturbance cover 17 is provided with a replaceable flange replacement part 34. The disturbance cover 17 has an internal thread interface. The flange replacement part 34 includes a flange part 35, a guide part 36 and an external thread interface part 37. The flange part 35 is used to connect with the lower discharge port 4 of the cyclone separator hopper 1. The external thread interface part 37 is detachably engaged with the internal thread interface on the disturbance cover 17. The flange replacement part 34 can be disassembled and replaced for connecting with the discharge ports of storage hoppers of different diameters in the plant.

[0044] like Figure 10 As shown, during operation, the disturbance motor 25 drives the disturbance ring 22 to rotate via the disturbance gear 26 and the disturbance chain 27. The disturbance rod 32 mounted on the disturbance ring 22 then continuously mechanically disturbs the cone hopper 3 near the discharge port 4, continuously breaking the gradually forming material arch through the scraping action. At the same time, in conjunction with the discharge and pressure-assisted feeding condition, the low-pressure nitrogen gas in the plant is sprayed upwards along the inner side of the cylinder wall through the tangential air inlet pipe 5 and the arc-shaped rubber hose 12, and then constrained and turned downwards, forming an axially uniform airflow that is vertically downward in the hopper, applying a downward pushing force to the powder accumulated in the cone hopper 3. The adaptive scraping unit 15 and the nitrogen axial airflow micro-positive pressure discharge means work together. The nitrogen airflow provides the driving force for the overall downward pressure of the material column in the hopper. The adaptive scraping unit 15 continuously disturbs the powder in the cone hopper 3 through mechanical means. The dual action jointly assists in the continuous downward conveying of materials.

[0045] In actual production, the by-product sodium carbonate produced by this unit has two possible destinations: for external sales, the material needs to be filled into ton bags for easy transport out of the factory; for internal recycling, the material needs to be filled into powder tanks for on-site storage. If two separate discharge devices are configured, it will increase equipment investment and pipeline modification work. To accommodate both filling scenarios, such as... Figure 11-12As shown, the lower side of the adaptive scraping unit 15 is provided with a discharge connection unit 38, which is used to realize two operation modes: ton bag filling and powder tank filling. The discharge connection unit 38 includes a ton bag lifting platform 39 and a lifting base plate 40 fixed to the hopper support leg 2. A ton bag lifting push rod 41 is provided on the lifting base plate 40. The ton bag lifting push rod 41 extends downward through the lifting base plate 40 and is fixed to the ton bag lifting platform 39. The ton bag lifting platform 39 serves as a load-bearing base plate, and an assembly port 42 is opened in its center. The corrugated pipe 43 passes through the assembly port 42 of the ton bag lifting platform 39. The upper end of the guide corrugated pipe 43 is connected to the discharge end of the adaptive scraping unit 15. The lower end of the guide corrugated pipe 43 is provided with a double-mold discharge port 44. The double-mold discharge port 44 is a variable diameter tubular structure. The middle of the double-mold discharge port 44 is an inclined section 45 for docking with the powder tank. The lower side of the double-mold discharge port 44 is a cylindrical section 46, and the bag opening of the ton bag can be fitted onto the outside of the cylindrical section 46. Because the guide corrugated pipe 43 has flexible deformation capacity... When the dual-mold discharge port 44 moves up and down, the guide corrugated pipe 43 can expand and contract accordingly, thereby ensuring the continuity and sealing of the material conveying channel; the material tank push rod 47 is fixedly installed on the ton bag lifting platform 39, and a connecting ear 48 is fixedly provided on the outside of the dual-mold discharge port 44. The material tank push rod 47 extends downward through the ton bag lifting platform 39 and is fixed to the connecting ear 48. The material tank push rod 47 drives the dual-mold discharge port 44 to move up and down as a whole through the connecting ear 48; ton bag lifting platform 39 Measuring hooks 49 are provided at the four corners of the lower side, allowing the ton bag to be hung on the hooks and its weight measured during operation. The lower ends of the ton bag lifting platform 39 are vertically equipped with clamping base plates 50, and horizontally equipped with bag opening push rods 51. The push head of the bag opening push rod 51 extends through the clamping base plate 50 and is fixed to the arc-shaped bag opening clamping plate 52. Driven by the extension and retraction of the bag opening push rod 51, the bag opening clamping plate 52 can perform clamping and releasing actions, thereby achieving the clamping and releasing of the ton bag opening. Figure 13 As shown, a gas collection and recovery hole 53 is provided on the inner side of the dual-mold discharge port 44, and a through gas collection and recovery ring 54 is provided on the inner wall of the dual-mold discharge port 44. The gas collection and recovery hole 53 is connected to the gas collection and recovery ring 54, and the gas collection and recovery ring 54 is also equipped with a gas collection and recovery interface 55 that extends outward.

[0046] like Figure 14-15As shown, during the ton bag filling operation for external sales, the material tank push rod 47 drives the double-mold discharge port 44 to remain in the upper position and does not extend downwards; the ton bag is suspended on the metering hook 49 on the lower side of the ton bag lifting platform 39, the bag mouth push rod 51 drives the bag mouth clamp 52 to clamp the upper opening of the ton bag, completing the sealing connection at the bag mouth position, the ton bag lifting push rod 41 moves, driving the ton bag lifting platform 39 to rise; the material flows into the ton bag after passing through the adaptive scraping unit 15, the guide corrugated pipe 43, and the double-mold discharge port 44 in sequence, completing the quantitative measurement. During the filling operation, the volatile gases generated during filling are collected and recovered by the gas collection and recovery interface 55 through the gas collection and recovery hole 53 and the gas collection and recovery ring 54. When filling the powder tanks for internal use in the plant, the tank truck carrying the powder tank moves to directly below the double mold discharge port 44. The tank push rod 47 drives the connecting lug 48, causing the double mold discharge port 44 to move downward as a whole, so that the inclined section 45 of the double mold discharge port 44 is aligned with the feed port of the powder tank on the tank truck. The powder material is then conveyed downward into the powder tank for storage.

[0047] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sodium carbonate unloading device, characterized in that, The cyclone separator silo (1) is located above ground via silo support legs (2). The lower part of the cyclone separator silo (1) has a cone hopper (3) and a discharge port (4). The side of the cyclone separator silo (1) is provided with a tangential air inlet pipe (5) and a separation exhaust pipe (6). The separation exhaust pipe (6) is provided with an exhaust gate valve (7). The tangential air inlet pipe (5) is connected to an air inlet tee (8). One side of the air inlet tee (8) is provided with an air inlet gate valve (9). The air inlet tee (8) on the side of the air inlet gate valve (9) is used to connect with the by-product sodium carbonate gas-solid mixture containing tetrahydrofuran. The other side of the air inlet tee (8) is connected to the nitrogen branch in the plant. A central riser pipe (1) is coaxially arranged in the center of the cyclone separator silo (1). 0), the central air riser (10) is fixed to the cyclone separator hopper (1) through the annular partition plate (11); the inner side of the tangential air inlet pipe (5) is connected to the arc-shaped rubber tube (12), and the other end of the arc-shaped rubber tube (12) is equipped with a fixed frame (13). The upper side of the cyclone separator hopper (1) is vertically equipped with a switching cylinder (14), and the push head of the switching cylinder (14) passes through the annular partition plate (11) and is connected to the fixed frame (13). Under the gas-solid separation condition, the switching cylinder (14) is in the extended state, which drives the fixed frame (13) to make the air outlet end of the arc-shaped rubber tube (12) tilt downward; under the discharge condition, the switching cylinder (14) retracts, which drives the fixed frame (13) to make the air outlet end of the arc-shaped rubber tube (12) switch to tilting upward.

2. The sodium carbonate unloading device according to claim 1, characterized in that, The tangential intake pipe (5) is located below the annular partition plate (11), and the separate exhaust pipe (6) is located above the annular partition plate (11).

3. The sodium carbonate unloading device according to claim 1, characterized in that, An adaptive scraping unit (15) is provided on the lower side of the discharge port (4). The adaptive scraping unit includes a disturbance cavity (16) and a disturbance cover plate (17) provided above the disturbance cavity (16). A disturbance discharge port (18) is provided inside the disturbance cavity (16). A discharge gate valve (19) is connected to the lower side of the disturbance discharge port (18). An installation ring (20) is coaxially fixed on the upper side of the disturbance discharge port (18). The installation ring (20) is rotatably engaged with the disturbance rotating ring (22) through a bearing (21). A disturbance motor (25) is provided on the disturbance cover plate (17). The output end of the disturbance motor (25) extends downward and is fixed. A disturbance gear (26) is fixedly connected, and the disturbance gear (26) is connected to the disturbance ring (22) through the disturbance chain (27). The inner side of the disturbance ring (22) is provided with a fitting slide shaft (28), and the fitting slide plate (29) is slidably fitted on the fitting slide shaft (28). The fitting spring (31) is sleeved on the fitting slide shaft (28). Under the elastic force of the fitting spring (31), the fitting slide plate (29) slides to the side of the disturbance ring (22). The disturbance rod (32) is fixedly connected to the fitting slide plate (29) and extends upward into the inside of the hopper cone (3). The fitting wheel (33) and the disturbance rod (32) rotate in cooperation.

4. A sodium carbonate unloading device according to claim 3, characterized in that, The disturbance cover (17) is provided with an internal thread interface. The flange replacement part (34) is detachably fitted to the internal thread interface. The flange replacement part (34) includes a flange part (35), a guide part (36) and an external thread interface part (37). The flange part (35) is used to connect with the lower discharge port (4) of the cyclone separator hopper (1). The external thread interface part (37) is detachably fitted to the internal thread interface on the disturbance cover (17).

5. A sodium carbonate unloading device according to claim 3, characterized in that, The disturbance rotating ring (22) has a toothed ring (23) on the upper side and an assembly ring (24) on the lower side.

6. A sodium carbonate unloading device according to claim 3, characterized in that, The adaptive scraping unit (15) has a discharge connection unit (38) on its lower side. The discharge connection unit (38) includes a ton bag lifting platform (39) and a lifting base plate (40) fixed to the hopper support leg (2). A ton bag lifting push rod (41) is provided on the lifting base plate (40). The ton bag lifting push rod (41) extends downward through the lifting base plate (40) and is fixed to the ton bag lifting platform (39). The ton bag lifting platform (39) serves as a load-bearing base plate and has an assembly port (42) in its center. A guide corrugated pipe (43) passes through the assembly port (42) of the ton bag lifting platform (39), and the upper end of the guide corrugated pipe (43) is connected to the discharge end of the adaptive scraping unit (15). The lower end of the corrugated guide pipe (43) is provided with a double mold discharge port (44); the material tank push rod (47) is fixedly installed on the ton bag lifting platform (39), and the outer side of the double mold discharge port (44) is fixedly provided with a connecting ear (48). The material tank push rod (47) extends downward through the ton bag lifting platform (39) and is fixed with the connecting ear (48); the four corners of the lower side of the ton bag lifting platform (39) are respectively provided with metering hooks (49); the two ends of the lower side of the ton bag lifting platform (39) are vertically provided with clamping base plates (50), and the clamping base plates (50) are horizontally provided with bag mouth push rods (51). The push head of the bag mouth push rod (51) extends through the clamping base plate (50) and is fixed with the arc-shaped cross-section bag mouth clamp plate (52).

7. A sodium carbonate unloading device according to claim 6, characterized in that, The dual-mold discharge port (44) is a variable-diameter tubular structure. The middle of the dual-mold discharge port (44) is an inclined section (45) for docking with the powder tank. The lower side of the dual-mold discharge port (44) is a cylindrical section (46), and the bag opening of the ton bag can be fitted onto the outside of the cylindrical section (46).

8. A sodium carbonate unloading device according to claim 6, characterized in that, The inner side of the dual-mold discharge port (44) is provided with a gas collection and recovery hole (53), and the inner wall of the dual-mold discharge port (44) is provided with a through gas collection and recovery ring (54). The gas collection and recovery hole (53) is connected to the gas collection and recovery ring (54), and the gas collection and recovery ring (54) is also provided with an outwardly leading gas collection and recovery interface (55).

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