Pneumatic ash conveying feeding and discharging device capable of preventing dust adhesion and use method of pneumatic ash conveying feeding and discharging device

Abstract

The invention relates to the technical field of ash conveying feeding and discharging devices, in particular to a pneumatic ash conveying feeding and discharging device capable of preventing dust adhesion and a using method thereof.The pneumatic ash conveying feeding and discharging device comprises a pre-storage assembly, a bin pump assembly is fixedly connected to the bottom end of the pre-storage assembly, a rotary sealing assembly is installed on the inner side of the bin pump assembly, and a filtering assembly is installed on the inner side of the rotary sealing assembly; a base assembly is installed at the bottom end of the rotary sealing assembly, a sweeping assembly is installed on the inner side of the base assembly, the bin pump assembly comprises a bin shell, a built-in cylinder is fixedly connected to the inner side of the bin shell, a limiting ring is fixedly connected to the outer side of the built-in cylinder, the rotary sealing assembly comprises an annular plate, a first sealing ring is fixedly connected to the outer side of the annular plate, and a second sealing ring is fixedly connected to the inner side of the annular plate. According to the device, dust on the inner wall is rapidly removed, accumulation and electrostatic agglomeration are prevented, the stability of the circulation sectional area is guaranteed, the airflow resistance and energy consumption are reduced, dust is discharged along with airflow, the maintenance working frequency is reduced, and stable operation of the system is guaranteed.

Description

Technical Field

[0001] This invention relates to the technical field of ash conveying and discharging devices, specifically to a pneumatic ash conveying and discharging device for preventing dust adhesion and its usage method. Background Technology

[0002] The pneumatic ash conveying inlet and outlet device is the core connecting equipment of the pneumatic conveying system. It integrates the inlet sealing valve, buffer bin, flow regulation component and the outlet separation dust removal device, unloader and other structures. It can realize the quantitative feeding, directional unloading and dust recovery of powder materials. It is compatible with various conveying systems such as positive pressure and negative pressure. It is widely used in thermal power, metallurgy and other industries. It has the characteristics of high conveying efficiency, good sealing performance and small footprint. It can effectively avoid the problems of pipe blockage, material accumulation and dust emission, and ensure the continuous and stable operation of the system.

[0003] During pneumatic conveying, the collision and friction between dust particles and the inner wall of the pipe, as well as between particles themselves, can trigger an electrostatic effect, causing the particle surface to carry the same or opposite charges. Particles with opposite charges are easily attracted by the pipe wall, while particles with the same charge will agglomerate due to electrostatic discharge, forming large particle clumps that then adhere to the inner wall of the pipe. As charged particles continue to accumulate, a hard electrostatic adhesion layer gradually forms on the pipe wall, reducing the effective flow cross-sectional area of ​​the pipe and significantly increasing the airflow resistance. To ensure the rated conveying capacity, the fan or air compressor needs to increase its operating power to overcome the increased resistance, ultimately leading to an increase in system energy consumption. Therefore, this paper proposes a pneumatic ash conveying device and its usage method to prevent dust adhesion. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic ash conveying and discharging device for preventing dust adhesion and its usage method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pneumatic ash conveying and discharging device for preventing dust adhesion includes a pre-storage assembly. A silo pump assembly is fixedly connected to the bottom of the pre-storage assembly. A rotary sealing assembly and a filter assembly are installed inside the silo pump assembly. A base assembly is installed at the bottom of the rotary sealing assembly, and a cleaning assembly is installed inside the base assembly. The silo pump assembly includes a silo shell, with an inner cylinder fixedly connected to the inner side of the silo shell. A limit ring is fixedly connected to the outer side of the inner cylinder. The rotary sealing assembly includes a ring plate, with a first sealing ring fixedly connected to the outer side of the ring plate and a second sealing ring fixedly connected to the inner side of the ring plate. A rotating groove is formed in the inner circumference of the ring plate, and the ring plate is rotatably connected to the limit ring fixedly connected to the inner cylinder via the rotating groove. The base assembly includes a rail plate, with a rail groove and a spiral groove formed on the inner side of the rail plate. A first permanent magnet block is fixedly connected to the inner side of the rail groove, and a second permanent magnet block, including the cleaning assembly, is slidably installed inside the rail groove. A folded plate is fixedly connected to the bottom of the second permanent magnet block, and a cotton pad is fixedly connected to the side of the folded plate.

[0007] As a further optimization of the present invention, the pre-storage component includes a pre-storage cylinder, the outer side of which is fixedly connected to the housing of a drive motor, a valve flap is fixedly connected to the end of the drive motor spindle, the valve flap is embedded inside the pre-storage cylinder, and the bottom end of the pre-storage cylinder is fixedly connected to the top end of the silo shell.

[0008] As a further optimization of the present invention, a material conveying valve pipe is fixedly connected to the lower end of the silo shell, and a support frame is fixedly connected to the outer side of the silo shell.

[0009] As a further optimization of the present invention, wherein: an extension shell is fixedly connected to the top of the silo shell, a vent pipe is fixedly connected to the inner side of the silo shell, the inner side of the vent pipe is connected to the inner side of the silo shell, and the vent pipe is located at the top of the ring plate.

[0010] As a further optimization of the present invention, a servo motor is fixedly connected to the outside of the inner cylinder, and a gear is fixedly connected to the end of the main shaft of the servo motor. The gear is located at the top of the ring plate, and the ring plate is rotatably connected to the limiting ring fixedly connected to the inner cylinder through a rotating groove.

[0011] As a further optimization of the present invention, wherein: the outer side of the gear meshes with the outer side of the gear ring, the bottom end of the gear ring is fixedly connected to the top end of the ring plate, the ring plate and the gear ring are both sleeved on the outer side of the inner cylinder, the inner side of the second sealing ring is in contact with the outer side of the inner cylinder, and the outer side of the first sealing ring is in contact with the inner side of the housing.

[0012] As a further optimization of the present invention, the top end of the track plate is fixedly connected to the bottom end of the ring plate, the first permanent magnet block and the second permanent magnet block are magnetically attracted to each other, a screw is threadedly connected to the inner side of the spiral groove, and a gap is provided between the screw and the second permanent magnet block.

[0013] As a further optimization of the present invention, the inner side of the ring plate is provided with a plurality of screw holes, and the plurality of screw holes are offset from the base assembly.

[0014] As a further optimization of the present invention, wherein: the inner side of the screw hole is threadedly connected to the external threaded shell of the filter assembly, the bottom end of the external threaded shell is fixedly connected to a rubber pad, the top end of the rubber pad is in contact with the bottom end of the ring plate, and ventilation holes are provided on the inner sides of both the external threaded shell and the rubber pad, and a filter plate is fixedly connected to the inner side of the ventilation hole.

[0015] A method of using a pneumatic ash conveying and discharging device to prevent dust adhesion;

[0016] Step 1: When in use, fill the pre-storage cylinder with powder material, start the drive motor to rotate the valve, and the powder material inside the pre-storage cylinder falls into the silo shell through the extended shell and the inner cylinder. The vent pipe is connected to the port of the external positive and negative pressure conveying system. The positive and negative pressure conveying system draws air from the inside of the silo shell, and at the same time, the valve port at the left end of the conveying valve pipe is closed, so that negative pressure is generated inside the silo shell. The first sealing ring and the second sealing ring seal the silo shell, the ring plate and the inner cylinder. The air inside the silo shell comes into contact with the filter plate through the vent hole. After being filtered by the filter plate, it enters the space formed by the inner cylinder, the silo shell and the ring plate, and is then discharged through the vent pipe. When the powder material inside the pre-storage cylinder is discharged, the drive motor controls the valve to seal the inside of the pre-storage cylinder. At this time, the valve port at the left end of the conveying valve pipe opens, and the positive and negative pressure conveying system delivers air into the silo shell through the vent pipe and the vent hole. The air pressure inside the silo shell expands, and the powder material inside enters the conveying valve pipe with the gas.

[0017] Step 2: When cleaning the dust adhering to the inner wall of the silo, start the servo motor. The servo motor drives the gear to rotate. The gear meshes with the gear ring, which drives the ring plate to rotate through the gear ring. The ring plate is rotatably connected to the limit ring through the rotating groove, which limits the rotation of the rotary sealing assembly. When the ring plate rotates, it drives the rail plate to rotate. Since the rail plate is slidably connected to the second permanent magnet block, the folded plate and the cotton pad rotate at the same time. The cotton pad contacts the inner wall of the silo and cleans the dust adhering to the inner wall of the silo during rotation. At the same time, the positive and negative pressure conveying system continues to work, and the valve flap seals the inside of the pre-storage cylinder. The cleaned dust is discharged with the air through the conveying valve pipe.

[0018] Step 3: During maintenance, after opening the valve disc, the pre-storage cylinder connects to the inside of the housing. By operating the screw, the screw is disengaged from the spiral groove, releasing the blockage of the second permanent magnet block. Pull the folding plate to move it. With the sliding fit between the second permanent magnet block and the rail groove, the distance between the second permanent magnet block and the screw, and the magnetic attraction between the first and second permanent magnet blocks, the cleaning assembly is removed, leaving room for movement to adjust the position of the worn cotton pad. At the same time, rotate the rubber pad, which drives the external threaded shell to rotate, releasing the blockage of the screw hole and allowing the external threaded shell to disengage from the screw hole, thus replacing the filter assembly.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, through the set filter components, the device can intercept dust from entering the core component area, build a comprehensive and reliable protective barrier for key protective components, fundamentally avoid problems such as component wear and failure caused by dust pollution, and ensure the long-term stable operation of core components;

[0021] 2. In this invention, through the gears, ring plates, rail plates and cleaning components, the device can quickly remove dust adhering to the inner wall of the device, preventing dust accumulation and electrostatic agglomeration into large particle clumps from the source. This ensures the stability of the effective flow cross-sectional area inside the device, avoids increased airflow resistance due to narrowing of the channel, and eliminates the need to increase the operating power of equipment such as air compressors, effectively reducing system energy consumption. At the same time, the cleaned dust can be discharged synchronously with the airflow without additional cleaning procedures, reducing maintenance workload and ensuring long-term stable operation of the ash conveying system.

[0022] 3. In this invention, the screw holes, external threaded shell, rail groove and second permanent magnet block make it easy to quickly adjust the position of the cleaning parts after they wear out, ensuring that they are always in close contact with the inner wall of the device, improving the service life of the cleaning parts, reducing the cost of replacing parts, and at the same time, making it easy and quick to disassemble and replace the filter components, reducing maintenance time and difficulty. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall exploded structure of the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of the silo pump assembly of the present invention;

[0026] Figure 4 This is a schematic diagram of the shell structure of the present invention;

[0027] Figure 5 For the present invention Figure 4A schematic diagram of the structure at point A;

[0028] Figure 6 This is one of the cross-sectional structural schematic diagrams of the rotary sealing assembly of the present invention;

[0029] Figure 7 This is a second cross-sectional structural schematic diagram of the rotary sealing assembly of the present invention;

[0030] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point B;

[0031] Figure 9 This is a schematic diagram of the ring plate structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the toothed ring structure of the present invention;

[0033] Figure 11 For the present invention Figure 10 A schematic diagram of the structure at point C;

[0034] Figure 12 This is a cross-sectional structural diagram of the filter assembly of the present invention;

[0035] In the diagram: 1. Pre-storage assembly; 11. Pre-storage cylinder; 12. Drive motor; 13. Valve disc;

[0036] 2. Silo pump assembly; 21. Silo shell; 22. Extension shell; 23. Vent pipe; 24. Internal cylinder; 25. Servo motor; 26. Gear; 27. Limit ring;

[0037] 3. Support frame; 4. Material conveying valve pipe;

[0038] 5. Rotary sealing assembly; 51. Ring plate; 52. First sealing ring; 53. Second sealing ring; 54. Rotary groove; 55. Toothed ring; 56. Screw hole;

[0039] 6. Filter assembly; 61. Rubber pad; 62. External threaded housing; 63. Vent hole; 64. Filter plate;

[0040] 7. Base assembly; 71. Rail plate; 72. First permanent magnet block; 73. Rail groove; 74. Spiral groove; 75. Screw;

[0041] 8. Cleaning assembly; 81. Folding plate; 82. Cotton pad; 83. Second permanent magnet block. Detailed Implementation

[0042] 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.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Please see Figures 1-12 The present invention provides a technical solution:

[0045] A pneumatic ash conveying and discharging device for preventing dust adhesion and its method of use, comprising a pre-storage assembly 1, a silo pump assembly 2 fixedly connected to the bottom of the pre-storage assembly 1, a rotary seal assembly 5 installed inside the silo pump assembly 2, a filter assembly 6 installed inside the rotary seal assembly 5, a base assembly 7 installed at the bottom of the rotary seal assembly 5, a cleaning assembly 8 installed inside the base assembly 7, the silo pump assembly 2 including a silo shell 21, an inner cylinder 24 fixedly connected inside the silo shell 21, a limit ring 27 fixedly connected outside the inner cylinder 24, and the rotary seal assembly 5 including a ring plate 51, the outer side of the ring plate 51 being fixedly connected... A first sealing ring 52 is connected, and a second sealing ring 53 is fixedly connected to the inner side of the ring plate 51. A rotating groove 54 is opened in the inner circumference of the ring plate 51. The ring plate 51 is rotatably connected to the limiting ring 27 fixedly connected to the inner cylinder 24 through the rotating groove 54. The base assembly 7 includes a rail plate 71. A rail groove 73 and a spiral groove 74 are opened in the inner side of the rail plate 71. A first permanent magnet block 72 is fixedly connected to the inner side of the rail groove 73. A second permanent magnet block 83, including the cleaning assembly 8, is slidably installed in the inner side of the rail groove 73. A folded plate 81 is fixedly connected to the bottom end of the second permanent magnet block 83. A cotton pad 82 is fixedly connected to the side of the folded plate 81.

[0046] As a further implementation of this solution, the pre-storage component 1 includes a pre-storage cylinder 11. The outer side of the pre-storage cylinder 11 is fixedly connected to the housing of the drive motor 12. A valve disc 13 is fixedly connected to the end of the main shaft of the drive motor 12. The valve disc 13 is embedded inside the pre-storage cylinder 11. The bottom end of the pre-storage cylinder 11 is fixedly connected to the top end of the hopper shell 21. Through the above settings, the fixed connection between the pre-storage cylinder 11 and the housing of the drive motor 12 can ensure the installation stability of the drive motor 12 during operation and avoid vibration causing component displacement. The assembly method of the valve disc 13 being embedded inside the pre-storage cylinder 11, combined with the fixed connection of the main shaft of the drive motor 12, can ensure that the drive motor 12 drives the valve disc 13 to rotate precisely, realize reliable sealing and smooth feeding of the material inside the pre-storage cylinder 11, effectively prevent material leakage or feeding blockage. At the same time, the fixed connection between the pre-storage cylinder 11 and the hopper shell 21 ensures the sealing and continuity of the feeding channel, laying a structural foundation for subsequent negative pressure feeding and stable ash conveying.

[0047] As a further implementation of this solution, a conveying valve pipe 4 is fixedly connected to the lower end of the silo shell 21, and a support frame 3 is fixedly connected to the outside of the silo shell 21. Through the above settings, the fixed connection between the silo shell 21 and the conveying valve pipe 4 establishes a stable ash conveying channel, ensuring that the cleaned dust and materials can smoothly enter the conveying valve pipe 4 for discharge, avoiding material accumulation and pipe blockage at the connection. The fixed connection between the outside of the silo shell 21 and the support frame 3 can enhance the structural strength of the silo shell 21, resist the stress generated by airflow impact and material collision during ash conveying, prevent the silo shell 21 from deforming, ensure the stability of its internal effective flow cross-sectional area, thereby avoiding abnormal increase in airflow conveying resistance and reducing system energy consumption.

[0048] As a further implementation of this solution, an extension shell 22 is fixedly connected to the top of the silo shell 21, and a vent pipe 23 is fixedly connected to the inside of the silo shell 21. The inside of the vent pipe 23 is connected to the inside of the silo shell 21. The vent pipe 23 is located at the top of the ring plate 51. Through the above settings, the fixed connection between the silo shell 21 and the extension shell 22 can achieve precise docking between the pre-storage cylinder 11 and the silo shell 21, guiding the material to fall into the silo shell 21 in a directional manner, avoiding material spillage and accumulation. The fixed connection and connection design between the vent pipe 23 and the silo shell 21 ensures that the vent pipe 23 can be stably connected to the external positive and negative pressure conveying system. On the one hand, the negative pressure can accelerate the feeding speed and prevent blockage. On the other hand, it can smoothly discharge the mixture of material and air during the ash conveying stage. At the same time, its layout at the top of the ring plate 51 can avoid interference with the movement of the cleaning components and ensure the coordinated operation of the cleaning and ash conveying functions.

[0049] As a further implementation of this solution, a servo motor 25 is fixedly connected to the outside of the inner cylinder 24, and a gear 26 is fixedly connected to the end of the main shaft of the servo motor 25. The gear 26 is located at the top of the ring plate 51. The ring plate 51 is rotatably connected to the limiting ring 27 fixedly connected to the inner cylinder 24 through the rotating groove 54. Through the above settings, the fixed connection between the inner cylinder 24 and the servo motor 25 ensures the installation stability of the servo motor 25 and avoids vibration and displacement during operation. The fixed connection between the main shaft of the servo motor 25 and the gear 26 ensures that the power of the servo motor 25 is accurately transmitted to the gear 26. The meshing of the gear 26 and the gear ring 55 drives the ring plate 51 to rotate, thereby driving the subsequent cleaning components to operate, achieving efficient cleaning of dust on the inner wall of the chamber shell 21. This prevents dust accumulation and electrostatic agglomeration from forming large particle agglomerates, ensuring the stability of the effective flow cross-sectional area inside the chamber shell 21, avoiding increased airflow resistance, and reducing system energy consumption.

[0050] As a further implementation of this solution, the outer side of gear 26 meshes with the outer side of gear ring 55. The bottom end of gear ring 55 is fixedly connected to the top end of ring plate 51. Both ring plate 51 and gear ring 55 are fitted onto the outer side of inner cylinder 24. The inner side of second sealing ring 53 is in contact with the outer side of inner cylinder 24, and the outer side of first sealing ring 52 is in contact with the inner side of housing 21. Through the above arrangement, the meshing of gear 26 and gear ring 55 and the fixed connection of gear ring 55 and ring plate 51 achieve stable power transmission, ensuring that ring plate 51 can rotate smoothly, thus providing power for the cleaning assembly. Provides reliable power support. The layout of the ring plate 51 and toothed ring 55 sleeved on the outside of the inner cylinder 24 can make full use of space, making the structure more compact and reducing the area occupied by the device. The fit between the second sealing ring 53 and the inner cylinder 24 and the fit between the first sealing ring 52 and the housing 21 form a double sealing structure, which can effectively prevent dust from entering the space formed by the inner cylinder 24, the housing 21 and the ring plate 51, avoid dust contamination of core drive components such as the servo motor 25, prevent component wear and failure, and ensure long-term stable operation of core components.

[0051] As a further implementation of this solution, the top of the track plate 71 is fixedly connected to the bottom of the ring plate 51. The first permanent magnet block 72 and the second permanent magnet block 83 are magnetically attracted to each other. The inner side of the spiral groove 74 is threaded with a screw 75. A gap is set between the screw 75 and the second permanent magnet block 83. Through the above settings, the fixed connection between the track plate 71 and the ring plate 51 can accurately transmit the rotational power of the ring plate 51 to the cleaning component, ensuring the synchronous and stable operation of the cleaning component and guaranteeing the cleaning effect. The magnetic attraction between the first permanent magnet block 72 and the second permanent magnet block 83, combined with the threaded connection between the spiral groove 74 and the screw 75, can achieve reliable positioning of the cleaning component on the one hand, and on the other hand, after loosening the screw 75 to release the blockage of the second permanent magnet block 83, the magnetic separability and the gap between the screw 75 and the second permanent magnet block 83 can be used to facilitate quick and easy removal of the cleaning component. At the same time, it reserves space for the cleaning component to move, which is convenient for position adjustment after the cleaning component is worn, ensuring that it is always in close contact with the inner wall of the housing 21, improving the service life of the cleaning component and reducing replacement costs.

[0052] As a further implementation of this solution, multiple screw holes 56 are provided through the inner side of the ring plate 51. These screw holes 56 are offset from the base assembly 7. Through the above-mentioned arrangement, the design of multiple screw holes 56 on the inner side of the ring plate 51 provides a reasonable layout space for the installation of the filter assembly. At the same time, the arrangement of multiple screw holes 56 can improve the comprehensiveness of filtration protection. The offset layout of the screw holes 56 from the base assembly 7 can avoid interference between the two during operation, ensuring the stable realization of the functions of the filter assembly and the cleaning assembly, ensuring that the filtration and dust prevention functions and the inner wall cleaning functions work together, and further improving the operational stability of the device.

[0053] As a further implementation of this solution, the threaded connection inside the screw hole 56 is to the external threaded shell 62 of the filter assembly 6. A rubber pad 61 is fixedly connected to the bottom end of the external threaded shell 62, and the top end of the rubber pad 61 is in contact with the bottom end of the ring plate 51. Ventilation holes 63 are provided inside both the external threaded shell 62 and the rubber pad 61. A filter plate 64 is fixedly connected inside the ventilation hole 63. Through the above arrangement, the threaded connection between the screw hole 56 and the external threaded shell 62, combined with the fit design between the rubber pad 61 and the ring plate 51, achieves reliable fixation of the filter assembly. At the same time, the threaded connection is easy to disassemble. By rotating the rubber pad 61, the external threaded shell 62 can be driven out of the screw hole 56, quickly releasing the blockage and facilitating the replacement of the filter assembly 6, reducing maintenance operation time and difficulty. The opening of the ventilation hole 63 and the fixed connection of the filter plate 64 allow air to enter the internal space after being filtered by the filter plate 64, effectively intercepting dust from entering the core component area, building a comprehensive and reliable protective barrier for the core protective components, avoiding component wear and failure caused by dust pollution, and ensuring the long-term stable operation of the device.

[0054] Workflow: During use, powder material is filled into the pre-storage cylinder 11. At this time, valve 13 seals the inside of the pre-storage cylinder 11, and the powder material concentrates at the upper end of valve 13. When discharging, the drive motor 12 is started to drive valve 13 to rotate. At this time, the powder material inside the pre-storage cylinder 11 falls into the inside of the hopper shell 21 through the extension shell 22 and the inner cylinder 24. The vent pipe 23 is connected to the port of the external positive and negative pressure conveying system. The positive and negative pressure conveying system evacuates air from the inside of the hopper shell 21. The valve port at the left end of the previous conveying valve pipe 4 is closed, creating negative pressure inside the hopper shell 21. This can speed up the discharging speed and prevent blockage. During this process, the first sealing ring 52 and the second sealing ring 53 seal the hopper shell 21, the ring plate 51, and the inner cylinder 24. In this way, the air inside the silo shell 21 will come into contact with the filter plate 64 through the vent 63. After being filtered by the filter plate 64, the air enters the space formed by the inner cylinder 24, the silo shell 21 and the ring plate 51, preventing dust from entering and thus protecting the servo motor 25. The air is then discharged through the vent pipe 23. After the powder material inside the pre-storage cylinder 11 has been fed, the valve flap 13 is controlled by the drive motor 12 to seal the inside of the pre-storage cylinder 11. At this time, the valve port at the left end of the conveying valve pipe 4 opens, and the positive and negative pressure conveying system delivers air to the inside of the silo shell 21 through the vent pipe 23 and the vent 63. At this time, the air pressure inside the silo shell 21 expands, and the powder material inside the silo shell 21 will enter the inside of the conveying valve pipe 4 with the gas, thereby achieving the effect of ash conveying.

[0055] When cleaning the dust adhering to the inner wall of the housing 21, the servo motor 25 is started. The servo motor 25 drives the gear 26 to rotate. Under the action of meshing with the gear ring 55, the gear 26 drives the ring plate 51 to rotate through the gear ring 55. The ring plate 51 is rotatably connected to the limiting ring 27 through the rotating groove 54, which plays a role in limiting the rotation of the rotary sealing assembly 5. When the ring plate 51 rotates, it drives the rail plate 71 to rotate. Since the rail plate 71 is slidably connected to the second permanent magnet block 83, the folded plate 81 and the cotton pad 82 rotate at the same time. The cotton pad 82 is in contact with the inner wall of the housing 21. When the cotton pad 82 rotates, it cleans the dust adhering to the inner wall of the hopper 21. The dust floats inside the hopper 21. At the same time, the positive and negative pressure conveying system is also working. The valve 13 seals the inside of the pre-storage cylinder 11. In this way, the cleaned dust is discharged through the conveying valve pipe 4 along with the air, thereby achieving the effect of cleaning the inside of the hopper 21, preventing dust from adhering and accumulating, and thus preventing the formation of large-diameter particle clumps. This ensures that the effective flow cross-sectional area will not decrease and avoids increased energy consumption due to the load on the air compressor of the positive and negative pressure conveying system.

[0056] During maintenance, after opening valve disc 13, the pre-storage cylinder 11 is connected to the interior of the housing 21. By operating screw 75, screw 75 is disengaged from the spiral groove 74, releasing the blockage of the second permanent magnet block 83. When the folding plate 81 is pulled, the sliding engagement between the second permanent magnet block 83 and the rail groove 73, as well as the distance between the second permanent magnet block 83 and screw 75, and the magnetic attraction between the first permanent magnet block 72 and the second permanent magnet block 83, not only facilitates the removal of the cleaning assembly 8, but also leaves room for the cleaning assembly 8 to move, ensuring that the cotton pad 82 can be adjusted after wear, keeping the cotton pad 82 in contact with the housing 21, and improving the service life of the cotton pad 82. At the same time, rotating the rubber pad 61 causes the external threaded shell 62 to rotate, releasing the rubber pad 61 from the screw hole 56, and the external threaded shell 62 disengages from the screw hole 56, thus facilitating the replacement of the filter assembly 6.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic ash conveying and discharging device for preventing dust adhesion, comprising a pre-storage assembly (1), characterized in that: The pre-storage assembly (1) is fixedly connected to the bottom of the silo pump assembly (2). A rotary sealing assembly (5) is installed inside the silo pump assembly (2). A filter assembly (6) is installed inside the rotary sealing assembly (5). A base assembly (7) is installed at the bottom of the rotary sealing assembly (5). A cleaning assembly (8) is installed inside the base assembly (7). The silo pump assembly (2) includes a silo shell (21). An inner cylinder (24) is fixedly connected inside the silo shell (21). A limit ring (27) is fixedly connected outside the inner cylinder (24). The rotary sealing assembly (5) includes a ring plate (51). A limit ring (27) is fixed outside the ring plate (51). A first sealing ring (52) is connected, and a second sealing ring (53) is fixedly connected to the inner side of the ring plate (51). A rotating groove (54) is opened in the inner circumference of the ring plate (51). The base assembly (7) includes a rail plate (71). A rail groove (73) and a spiral groove (74) are opened in the inner side of the rail plate (71). A first permanent magnet block (72) is fixedly connected to the inner side of the rail groove (73). A second permanent magnet block (83) including the cleaning assembly (8) is slidably installed in the inner side of the rail groove (73). A folded plate (81) is fixedly connected to the bottom end of the second permanent magnet block (83). A cotton pad (82) is fixedly connected to the side of the folded plate (81).

2. The pneumatic conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: The pre-storage assembly (1) includes a pre-storage cylinder (11), the outer side of which is fixedly connected to the housing of the drive motor (12), and a valve disc (13) is fixedly connected to the end of the main shaft of the drive motor (12). The valve disc (13) is embedded in the pre-storage cylinder (11), and the bottom end of the pre-storage cylinder (11) is fixedly connected to the top end of the silo shell (21).

3. The pneumatic ash conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: The lower end of the silo shell (21) is fixedly connected to a material conveying valve pipe (4), and the outer side of the silo shell (21) is fixedly connected to a support frame (3).

4. The pneumatic conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: An extension shell (22) is fixedly connected to the top of the silo shell (21), and a vent pipe (23) is fixedly connected to the inner side of the silo shell (21). The inner side of the vent pipe (23) is connected to the inner side of the silo shell (21), and the vent pipe (23) is located at the top of the ring plate (51).

5. A pneumatic conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: A servo motor (25) is fixedly connected to the outside of the inner tube (24). A gear (26) is fixedly connected to the end of the main shaft of the servo motor (25). The gear (26) is located at the top of the ring plate (51). The ring plate (51) is rotatably connected to the inner tube (24) through a rotating groove (54) and a limiting ring (27) fixedly connected to the inner tube (24).

6. A pneumatic conveying and discharging device for preventing dust adhesion according to claim 5, characterized in that: The gear (26) meshes with the outer side of the toothed ring (55). The bottom end of the toothed ring (55) is fixedly connected to the top end of the ring plate (51). The ring plate (51) and the toothed ring (55) are both sleeved on the outer side of the inner cylinder (24). The inner side of the second sealing ring (53) is in contact with the outer side of the inner cylinder (24). The outer side of the first sealing ring (52) is in contact with the inner side of the housing (21).

7. A pneumatic ash conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: The top end of the track plate (71) is fixedly connected to the bottom end of the ring plate (51). The first permanent magnet block (72) and the second permanent magnet block (83) are magnetically attracted. The inner side of the spiral groove (74) is threaded with a screw (75). There is a gap between the screw (75) and the second permanent magnet block (83).

8. A pneumatic ash conveying and discharging device for preventing dust adhesion according to claim 1, characterized in that: The inner side of the ring plate (51) is provided with a plurality of screw holes (56), and the plurality of screw holes (56) are offset from the base assembly (7).

9. A pneumatic conveying and discharging device for preventing dust adhesion according to claim 8, characterized in that: The screw hole (56) is threaded to the inner side of the filter assembly (6) including the external threaded shell (62). The bottom end of the external threaded shell (62) is fixedly connected to the rubber pad (61). The top end of the rubber pad (61) is attached to the bottom end of the ring plate (51). Ventilation holes (63) are opened on the inner side of both the external threaded shell (62) and the rubber pad (61). The filter plate (64) is fixedly connected to the inner side of the ventilation hole (63).

10. A method of using a pneumatic ash conveying and discharging device for preventing dust adhesion according to any one of claims 1-9, characterized in that: Step 1: When using, fill the pre-storage cylinder (11) with powder material, start the drive motor (12) to drive the valve (13) to rotate, and the powder material inside the pre-storage cylinder (11) falls into the silo shell (21) through the extension shell (22) and the inner cylinder (24). The vent pipe (23) is connected to the port of the external positive and negative pressure conveying system. The positive and negative pressure conveying system evacuates the silo shell (21), and at the same time, the valve port at the left end of the conveying valve pipe (4) is closed, so that negative pressure is generated inside the silo shell (21). The first sealing ring (52) and the second sealing ring (53) seal the silo shell (21), the ring plate (51) and the inner cylinder (24), and the silo shell (21) is sealed. Air comes into contact with the filter plate (64) through the vent (63). After being filtered by the filter plate (64), it enters the space formed by the inner cylinder (24), the silo shell (21) and the ring plate (51). The air is then discharged through the vent pipe (23). When the powder material inside the pre-storage cylinder (11) is discharged, the valve disc (13) is controlled by the drive motor (12) to seal the inside of the pre-storage cylinder (11). At this time, the valve port at the left end of the conveying valve pipe (4) is opened. The positive and negative pressure conveying system delivers air to the inside of the silo shell (21) through the vent pipe (23) and the vent (63). The air pressure inside the silo shell (21) expands, and the powder material inside enters the inside of the conveying valve pipe (4) with the gas. Step 2: When cleaning the dust adhering to the inner wall of the silo (21), start the servo motor (25). The servo motor (25) drives the gear (26) to rotate. Under the meshing action with the gear ring (55), the gear (26) drives the ring plate (51) to rotate through the gear ring (55). The ring plate (51) is connected to the limiting ring (27) through the rotating groove (54) to limit the rotation of the rotating sealing assembly (5). When the ring plate (51) rotates, it drives the rail plate (71) to rotate. Since the rail plate (71) is slidably connected to the second permanent magnet block (83), the folded plate (81) and the cotton pad (82) rotate at the same time. The cotton pad (82) contacts the inner wall of the silo (21). When rotating, it cleans the dust adhering to the inner wall of the silo (21). At the same time, the positive and negative pressure conveying system keeps working. The valve disc (13) seals the inside of the pre-storage cylinder (11). The cleaned dust is discharged with the air through the conveying valve pipe (4). Step 3: During maintenance, after opening the valve disc (13), the pre-storage cylinder (11) is connected to the inside of the housing (21). By operating the screw (75), the screw (75) is disengaged from the inside of the spiral groove (74), releasing the blockage of the second permanent magnet block (83). Pull the folding plate (81) to move. With the sliding cooperation between the second permanent magnet block (83) and the rail groove (73), the distance between the second permanent magnet block (83) and the screw (75), and the magnetic attraction between the first permanent magnet block (72) and the second permanent magnet block (83), the cleaning assembly (8) is removed and space is left for the cleaning assembly (8) to adjust the position of the worn cotton pad (82). At the same time, rotate the rubber pad (61), and the rubber pad (61) drives the external threaded shell (62) to rotate, releasing the blockage of the screw hole (56), so that the external threaded shell (62) is disengaged from the inside of the screw hole (56), and the filter assembly (6) is replaced.

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