Powder bin and baking soda conveying system with same

Abstract

The utility model provides a powder bin and a baking soda conveying system with the powder bin, the powder bin comprises a stirring device and a bin body, the stirring device comprises a driving assembly arranged at the top of the bin body and a stirring assembly connected with the driving assembly and arranged in the bin body; the stock bin body and the stirring assembly are both in an inverted cone shape, and the stirring assembly does not make contact with the inner wall of the stock bin body. According to the powder bin and the baking soda conveying system with the powder bin, the bin body is arranged to be in the inverted cone shape, powder can automatically flow into the discharging opening through gravity, backward flowing and blocking of the powder can be avoided, and the storage efficiency and the conveying efficiency of the powder are improved; the stirring assembly is arranged to be in the inverted cone shape, powder in the inverted-cone-shaped stock bin body can be fully stirred, and therefore the caking rate of the powder in the stock bin body can be reduced, equipment such as a discharging pipeline and a valve can be prevented from being blocked, and the maintenance cost of the equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, and particularly relates to a powder bin and a baking soda conveying system having the same. Background Art

[0002] The SDS sodium-based desulfurization technology is realized by uniformly spraying ultrafine powder of baking soda (NaHCO₃) into a reactor. When these baking soda powders come into contact with high-temperature flue gas with a temperature exceeding 140 °C, they will be activated and form a microporous structure on their surfaces, increasing the specific surface area of the baking soda powders. This can ensure sufficient contact between the baking soda powders and the flue gas, and then a chemical reaction occurs, enabling acidic gases such as SO₂ in the flue gas to be absorbed and purified, and at the same time generating solid powder by-products.

[0003] The sodium-based desulfurizing agent baking soda is transported to a raw material bin for storage by a ton bag. The main component of baking soda is sodium bicarbonate (NaHCO₃), which has a certain hygroscopicity. There are voids in the crystal structure of sodium bicarbonate powder, which can accommodate water molecules. Inside the raw material bin, sodium bicarbonate comes into contact with water molecules in the air, and the water molecules will enter the voids in the crystal structure of sodium bicarbonate, resulting in the dissolution and recrystallization of sodium bicarbonate. Crystal bridges are formed between the crystals, causing the crystals to adhere to each other, thus forming lumps. After lumping, the fluidity of the sodium bicarbonate powder becomes poor, easily causing blockages in downstream pipelines, valves and other equipment, thereby affecting the normal operation of the desulfurization system, and the pipeline equipment needs to be cleaned and maintained regularly, increasing the maintenance cost. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a powder bin and a baking soda conveying system having the same, so as to solve one or more of the problems existing in the prior art, such as the powder in the baking soda raw material bin lumps and blocks pipelines, valves and other equipment, affecting the normal operation of the desulfurization system and increasing the maintenance cost.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: A powder bin includes a stirring device and a bin body. The stirring device includes a driving component arranged at the top of the bin body and a stirring component connected to the driving component and arranged inside the bin body; both the bin body and the stirring component are in an inverted conical shape, and the stirring component does not contact the inner wall of the bin body.

[0006] Optionally, the driving component includes a motor mounting seat fixedly installed at the top of the bin body and a driving motor fixedly installed on the motor mounting seat. The driving end of the driving motor is connected to the stirring component.

[0007] Optionally, the stirring assembly includes a rotating shaft, a first propeller blade, a second propeller blade, and a plurality of connecting rods; the first end of the rotating shaft is connected to the driving assembly, and the second end of the rotating shaft extends to the discharge end of the silo body; the first propeller blade is spirally fixed to the outer side wall of the rotating shaft in a clockwise / counterclockwise direction, and the second propeller blade is spirally arranged in a counterclockwise / clockwise direction and is fixedly connected to the first propeller blade or the rotating shaft through a plurality of the connecting rods; in the direction from the first end of the rotating shaft to the second end of the rotating shaft, the diameter of the second propeller blade gradually decreases, so that the second propeller blade is in an inverted conical shape.

[0008] Optionally, the silo body includes a cylindrical body and a conical body connected to the bottom of the cylindrical body; a support frame is arranged on the outer side wall of the cylindrical body, and a discharge port is arranged at the bottom of the conical body.

[0009] Optionally, a level gauge is arranged on the outer side wall of the cylindrical body, and a vibrator is arranged on the outer side wall of the conical body.

[0010] Optionally, a maintenance opening is formed on the outer side wall of the conical body.

[0011] Optionally, a flap valve is arranged on the discharge pipeline near the discharge port.

[0012] Optionally, the stirring device is coaxially arranged with the silo body.

[0013] To achieve the above object, the present invention further provides a baking soda conveying system, including the powder silo according to any one of the above, a first feeding device connected to the discharge pipeline of the powder silo, a grinding device connected to the first feeding device, and a second feeding device connected to the grinding device; the first feeding device is configured to convey the powder in the powder silo to the grinding device; the grinding device is configured to grind the received powder; the second feeding device is configured to convey the ground powder to a desulfurization tower.

[0014] Optionally, the first feeding device includes a stirring feed bin connected to the discharge pipeline and a feeder connected to the stirring feed bin; the second feeding device includes a conveying fan connected to the grinding device.

[0015] Compared with the prior art, the powder silo provided by the present invention and the baking soda conveying system having the same have the following beneficial effects:

[0016] The powder bin provided by the utility model includes a stirring device and a bin body. The stirring device includes a driving component arranged at the top of the bin body and a stirring component connected to the driving component and arranged inside the bin body. Both the bin body and the stirring component are in an inverted conical shape, and the stirring component does not contact the inner wall of the bin body. Thus, for the powder bin provided by the utility model, by setting the bin body in an inverted conical shape, the powder in the bin body can automatically flow into the discharge port by gravity, which can avoid the situation of powder backflow and material jamming, and can improve the storage efficiency and conveying efficiency of the powder. By arranging the driving component at the top of the bin body, the stirring component can be driven to rotate, laying a good foundation for reducing the caking rate of the powder in the bin body. By setting the stirring component in an inverted conical shape, the powder in the inverted conical bin body can be fully stirred, so that the caking rate of the powder in the bin body can be reduced, and thus the blockage of equipment such as the discharge pipeline and valve can be avoided, and the maintenance cost of the equipment can be reduced. By making the stirring component not contact the inner wall of the bin body, the wear of the inner wall of the bin body can be reduced, the bin body can be protected from damage, and thus its service life can be extended.

[0017] Further, the stirring component includes a rotating shaft, a first propeller blade, a second propeller blade and a plurality of connecting rods. The first end of the rotating shaft is connected to the driving component, and the second end of the rotating shaft extends to the discharge end of the bin body. The first propeller blade is spirally fixed to the outer side wall of the rotating shaft in a clockwise / counterclockwise direction, and the second propeller blade is spirally arranged in a counterclockwise / clockwise direction and is fixedly connected to the first propeller blade or the rotating shaft through a plurality of the connecting rods. From the direction of the first end of the rotating shaft to the second end of the rotating shaft, the diameter of the second propeller blade decreases in sequence, so that the second propeller blade is in an inverted conical shape. Thus, for the powder bin provided by the utility model, by connecting the first end of the rotating shaft to the driving component, the driving component can drive the rotating shaft to rotate. By extending the second end of the rotating shaft to the discharge end of the bin body, the powder at the discharge port can be stirred to avoid the accumulation of powder at the discharge port, and thus the discharge smoothness of the powder bin can be improved. By fixedly connecting the first propeller blade and the second propeller blade with opposite spiral directions on the rotating shaft, the powder can be driven to circulate in the bin body, avoiding the caking of the powder in the bin body, and thus the fluidity and stability of the discharge pipeline can be improved. Further, by making the diameter of the second propeller blade decrease in sequence from the first end of the rotating shaft to the second end of the rotating shaft, so that the second propeller blade is in an inverted conical shape, the powder in each area of the bin body can be fully stirred, and thus the caking rate of the powder in the bin body can be further reduced.

[0018] The baking soda conveying system provided by the present utility model includes the powder bin described in any one of the above, a first feeding device connected to the discharge pipeline of the powder bin, a grinding device connected to the first feeding device, and a second feeding device connected to the grinding device; the first feeding device is configured to convey the powder in the powder bin to the grinding device; the grinding device is configured to grind the received powder; the second feeding device is configured to convey the ground powder to a desulfurization tower. Thus, the baking soda conveying system provided by the present utility model can reduce the caking rate of baking soda by using the powder bin provided by the present utility model to store baking soda. By using the first feeding device to convey the baking soda in the powder bin to the grinding device, the continuity and efficiency of the grinding process can be ensured. By grinding the baking soda with the grinding device, the utilization efficiency of baking soda and the desulfurization effect can be improved. By using the second feeding device, the ground baking soda can be conveyed to the desulfurization tower, thereby achieving the desulfurization effect. In addition, since the baking soda conveying system provided by the present utility model includes the powder bin provided by the present utility model, the baking soda conveying system provided by the present utility model has at least all the advantages of the powder bin provided by the present utility model. For the advantages of the baking soda conveying system provided by the present utility model, please refer to the relevant description of the beneficial effects of the powder bin provided by the present utility model, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 6 is a schematic structural diagram of a powder bin provided in Embodiment 1 of the present utility model;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the shown stirring assembly;

[0021] Figure 3 FIG. 16 is a schematic structural diagram of a baking soda conveying system provided in Embodiment 2 of the present utility model;

[0022] The reference numerals are explained as follows:

[0023] 1 - Powder silo, 11 - Stirring device, 111 - Driving component, 1111 - Motor mounting base, 1112 - Driving motor, 112 - Agitating component, 1121 - Rotating shaft, 1122 - First propeller blade, 1123 - Second propeller blade, 1124 - Connecting rod, 12 - Silo body, 121 - Cylinder, 1211 - Support frame, 1212 - Level gauge, 122 - Cone, 1221 - Discharge port, 12211 - Discharge pipeline, 12212 - Plug valve, 1222 - Vibrator, 1223 - Inspection opening, 2 - First feeding device, 21 - Stirring feed bin, 211 - Make-up valve, 22 - Feeder, 23 - Air supply device, 231 - Silencer, 3 - Grinding device, 4 - Second feeding device, 41 - Conveyor fan, 411 - Sampling valve, 412 - Discharge valve. Detailed implementation mode

[0024] The following further elaborates in detail on the powder silo and the baking soda conveying system having the same proposed by the present utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the accompanying drawings all adopt very simplified forms and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present utility model. In order to make the purpose, features, and advantages of the present utility model more obvious and understandable, please refer to the accompanying drawings. It should be known that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Any modification of the structure, change in the proportional relationship, or adjustment of the size, in the case of being the same or similar to the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. The specific design features of the present utility model disclosed herein, such as specific dimensions, directions, positions, and shapes, will be partially determined by the specific application and usage environment. Also, in the following described embodiments, sometimes the same reference numerals are used commonly between different drawings to represent the same part or parts having the same function, and the repeated description thereof is omitted.

[0025] Embodiment 1

[0026] This embodiment provides a powder silo. Specifically, please refer to Figure 1 and Figure 2 , Figure 1 is the structural schematic diagram of the powder silo provided by this embodiment; Figure 2 is Figure 1 the structural schematic diagram of the agitating component shown. From Figure 1 and Figure 2It can be seen that the powder bin 1 includes a stirring device 11 and a bin body 12. The stirring device 11 includes a driving component 111 arranged at the top of the bin body 12 and a stirring component 112 connected to the driving component 111 and arranged inside the bin body 12. Both the bin body 12 and the stirring component 112 are inverted conical, and the stirring component 112 does not contact the inner wall of the bin body 12. Thus, in the powder bin 1 provided in this embodiment, by setting the bin body 12 as an inverted cone, the powder in the bin body 12 can automatically flow into the discharge port 1221 by gravity, which can avoid the situation of powder backflow and material jamming, and can improve the storage efficiency and conveying efficiency of the powder. By arranging the driving component 111 at the top of the bin body 12, the stirring component 112 can be driven to rotate, laying a good foundation for reducing the caking rate of the powder in the bin body 12. By setting the stirring component 112 as an inverted cone, the powder in the inverted conical bin body 12 can be fully stirred, thereby reducing the caking rate of the powder in the bin body 12, and further avoiding blocking equipment such as the discharge pipeline 12211 and the valve, and reducing the maintenance cost of the equipment. By making the stirring component 112 not contact the inner wall of the bin body 12, the wear of the inner wall of the bin body 12 can be reduced, protecting the bin body 12 from damage, and thus extending its service life.

[0027] Preferably, the driving component 111 includes a motor mounting seat 1111 fixedly installed at the top of the bin body 12 and a driving motor 1112 fixedly installed on the motor mounting seat 1111. The driving end of the driving motor 1112 is connected to the stirring component 112. Thus, by supporting and fixing the driving motor 1112 through the motor mounting seat 1111, the working stability of the driving motor 1112 can be improved. By connecting the driving end of the driving motor 1112 to the stirring component 112, the stirring component 112 can be driven to rotate, so that the stirring component 112 can stir the powder in the bin body 12.

[0028] Furthermore, a speed reducer (not shown in the figure) is arranged on the driving motor 1112. By adjusting the speed reducer, the rotation speed of the driving motor 1112 can be controlled, thereby regulating the mixing and discharging speed to avoid powder caking.

[0029] Preferably, the stirring assembly 112 includes a rotating shaft 1121, a first propeller blade 1122, a second propeller blade 1123, and a plurality of connecting rods 1124; the first end of the rotating shaft 1121 is connected to the driving assembly 111, and the second end of the rotating shaft 1121 extends to the discharge end of the silo body 12; the first propeller blade 1122 is spirally fixed to the outer side wall of the rotating shaft 1121 in a clockwise / counterclockwise direction, and the second propeller blade 1123 is spirally arranged in a counterclockwise / clockwise direction and is fixedly connected to the first propeller blade 1122 or the rotating shaft 1121 through a plurality of the connecting rods 1124; in the direction from the first end of the rotating shaft 1121 to the second end of the rotating shaft 1121, the diameter of the second propeller blade 1123 gradually decreases, so that the second propeller blade 1123 is in an inverted conical shape. Thus, by connecting the first end of the rotating shaft 1121 to the driving assembly 111, the driving assembly 111 can drive the rotating shaft 1121 to rotate; by extending the second end of the rotating shaft 1121 to the discharge end of the silo body 12, the powder at the discharge port 1221 can be stirred to prevent the powder from accumulating at the discharge port 1221, thereby improving the discharging smoothness of the powder silo 1. By fixedly connecting the first propeller blade 1122 and the second propeller blade 1123 with opposite spiral directions on the rotating shaft 1121, the powder can be driven to circulate in the silo body 12 to prevent the powder in the silo body 12 from caking, thereby improving the fluidity and stability of the discharge pipeline 12211. Further, by gradually decreasing the diameter of the second propeller blade 1123 in the direction from the first end of the rotating shaft 1121 to the second end of the rotating shaft 1121, so that the second propeller blade 1123 is in an inverted conical shape, the powder in each area of the silo body 12 can be fully stirred, thereby further reducing the caking rate of the powder in the silo body 12.

[0030] Exemplarily, in some exemplary embodiments, when the rotating shaft 1121 is set to rotate clockwise, the first propeller blade 1122 is spirally fixed to the outer side wall of the rotating shaft 1121 in a clockwise direction, the second propeller blade 1123 is spirally wound around the first propeller blade 1122 in a counterclockwise direction, and the second propeller blade 1123 is fixedly connected to the first propeller blade 1122 through a plurality of connecting rods 1124. The diameter of the second propeller blade 1123 decreases sequentially from top to bottom ( Figure 2 the direction shown), so that the second propeller blade 1123 is in an inverted conical shape. Thus, there is a fluid backflow distance between the first propeller blade 1122 and the second propeller blade 1123, so that the first propeller blade 1122 and the second propeller blade 1123 can effectively generate thrust when rotating. The first propeller blade 1122 can guide the powder to flow downward, and the second propeller blade 1123 can guide the powder to flow upward, thereby efficiently stirring the powder in the silo body 12.

[0031] It should be noted that, as can be understood by those skilled in the art, in some other embodiments, the rotating shaft 1121 can also be set to rotate counterclockwise. At this time, the first propeller blade 1122 is spirally fixed on the outer sidewall of the rotating shaft 1121 in the counterclockwise direction, the second propeller blade 1123 is spirally wound around the periphery of the first propeller blade 1122 in the clockwise direction, and the second propeller blade 1123 is fixedly connected to the rotating shaft 1121 through a plurality of connecting rods 1124. The diameter of the second propeller blade 1123 ([ Figure 2 in the direction shown) decreases sequentially from top to bottom, so that the second propeller blade 1123 is in an inverted conical shape.

[0032] Furthermore, the silo body 12 includes a cylindrical body 121 and a conical body 122 connected to the bottom of the cylindrical body 121; a support frame 1211 is provided on the outer sidewall of the cylindrical body 121, and a discharge port 1221 is provided at the bottom of the conical body 122. Thus, by combining the use of the cylindrical body 121 and the conical body 122, the caking rate of the powder can be reduced, blockage during discharging can be avoided, and the smoothness of discharging can be improved. By providing the support frame 1211 on the outer sidewall of the cylindrical body 121, the powder silo 1 is supported.

[0033] Exemplarily, the cylindrical body 121 and the conical body 122 are integrally formed, and a feed port (not marked in the figure) is provided at the top of the cylindrical body 121 to facilitate the transportation of the powder into the silo body 12. Three support frames 1211 are evenly distributed on the outer sidewall of the cylindrical body 121, and a universal wheel (not shown in the figure) is provided at the bottom of each support frame 1211 to facilitate the movement and adjustment of the position of the powder silo 1.

[0034] Preferably, a level gauge 1212 is provided on the outer sidewall of the cylindrical body 121, and a vibrator 1222 is provided on the outer sidewall of the conical body 122. Thus, the height of the powder in the powder silo 1 can be monitored through the level gauge 1212, ensuring the continuity and stability of the production process. By providing the vibrator 1222 on the outer sidewall of the conical body 122, the caking rate of the powder in the silo body 12 can be further reduced.

[0035] Furthermore, a maintenance opening 1223 is provided on the outer sidewall of the conical body 122 to facilitate the staff to clean the blocked part in time and avoid affecting production.

[0036] Preferably, a knife gate valve 12212 is provided on the discharge pipeline 12211 near the discharge port 1221, which is convenient for controlling the discharge of the powder silo 1 and closing the powder in the powder silo 1. It should be noted that, as can be understood by those skilled in the art, the present invention does not impose excessive limitations on the type of the knife gate valve 12212. Exemplarily, in some embodiments, the knife gate valve 12212 can be a manual knife gate valve; in other embodiments, the knife gate valve 12212 can also be an electric knife gate valve.

[0037] Preferably, the stirring device 11 is coaxially arranged with the silo body 12. Thus, the powder in the silo body 12 can be evenly stirred.

[0038] Embodiment 2

[0039] This embodiment provides a baking soda conveying system. Specifically, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the baking soda conveying system provided in this embodiment. As can be seen from Figure 3 , the baking soda conveying system includes the powder silo 1 described in any of the above embodiments, a first feeding device 2 connected to the discharge pipeline 12211 of the powder silo 1, a grinding device 3 connected to the first feeding device 2, and a second feeding device 4 connected to the grinding device 3; the first feeding device 2 is configured to convey the powder in the powder silo 1 to the grinding device 3; the grinding device 3 is configured to grind the received powder; the second feeding device 4 is configured to convey the ground powder to a desulfurization tower (not shown in the figure). Thus, the baking soda conveying system provided in this embodiment can reduce the caking rate of baking soda by using the powder silo 1 provided in the above embodiments to store baking soda. By using the first feeding device 2 to convey the baking soda in the powder silo 1 to the grinding device 3, the continuity and efficiency of the grinding process can be ensured. By grinding the baking soda with the grinding device 3, the utilization efficiency and desulfurization effect of baking soda can be improved. By using the second feeding device 4, the ground baking soda can be conveyed to the desulfurization tower, so as to achieve the desulfurization effect. In addition, since the baking soda conveying system provided in this embodiment includes the powder silo 1 provided in the above embodiments, the baking soda conveying system provided in this embodiment has at least all the advantages of the powder silo 1 provided in the above embodiments. For the advantages of the baking soda conveying system provided in this embodiment, please refer to the relevant descriptions of the beneficial effects of the powder silo 1 provided in the above embodiments, and will not be elaborated here.

[0040] Preferably, the first feeding device 2 includes a stirring and feeding bin 21 connected to the discharge pipeline 12211 and a feeder 22 connected to the stirring and feeding bin 21; the second feeding device 4 includes a conveying fan 41 connected to the grinding device 3. Thus, by storing and stirring the baking soda powder to be conveyed to the grinding device 3 in the stirring and feeding bin 21, the uniformity and stability of the feeding of the grinding device 3 can be improved; through the feeder 22, the baking soda powder can be evenly, regularly and continuously supplied into the grinding device 3, so that the stability and working efficiency of the grinding device 3 can be improved. Through the conveying fan 41, the ground baking soda powder can be conveyed to the desulfurization tower to react with the flue gas. It should be noted that the feeder 22 may include, but is not limited to, a weighing screw feeder, which can convey and accurately measure the baking soda powder.

[0041] Exemplarily, in some exemplary embodiments, a replenishing valve 211 is provided on the inlet pipeline of the stirring and feeding bin 21, a gas supply device 23 is connected to the pipeline between the feeder 22 and the grinding device 3, and a silencer 231 is provided at the air inlet of the gas supply device 23; an outlet valve 412 is provided on the outlet pipeline of the conveying fan 41, and a sampling pipeline (not shown in the figure) is connected to the pipeline between the conveying fan 41 and the outlet valve 412, and a sampling valve 411 is provided on the sampling pipeline. Thus, the feeding amount and feeding speed of the stirring and feeding bin 21 can be accurately controlled through the replenishing valve 211, so that the stirring uniformity of the stirring and feeding bin 21 can be improved. By providing air through the gas supply device 23, it helps to push the baking soda powder into the grinding device 3; the intake noise can be reduced through the silencer 231. By providing a sampling valve 411 on the sampling pipeline, the baking soda can be sampled and detected, and then the baking soda can be output to the desulfurization tower through the outlet valve 412, so that the desulfurization effect of the baking soda can be improved.

[0042] Preferably, the baking soda conveying system further includes an electric hoist (not shown in the figure) and a ton bag unloader (not shown in the figure). The electric hoist is used to convey the ton bag filled with baking soda into the ton bag unloader, and the ton bag unloader is connected to the inlet of the powder bin 1 through a pipeline. Thus, the automatic and dust-free feeding of baking soda can be realized.

[0043] In summary, the powder bin and the baking soda conveying system having the same provided by the present utility model have the following advantages: The powder bin provided by the present utility model includes a stirring device and a bin body. The stirring device includes a driving component arranged at the top of the bin body and a stirring component connected to the driving component and arranged inside the bin body; both the bin body and the stirring component are in an inverted conical shape, and the stirring component does not contact the inner wall of the bin body. Thus, in the powder bin provided by the present utility model, by setting the bin body to an inverted conical shape, the powder in the bin body can automatically flow into the discharge port by gravity, which can avoid the situation of powder backflow and jamming, and can improve the storage efficiency and conveying efficiency of the powder. By arranging the driving component at the top of the bin body, the stirring component can be driven to rotate, which lays a good foundation for reducing the caking rate of the powder in the bin body; by setting the stirring component to an inverted conical shape, the powder in the inverted conical bin body can be fully stirred, thereby reducing the caking rate of the powder in the bin body, and further avoiding blocking equipment such as the discharge pipeline and valves, and reducing the maintenance cost of the equipment. By making the stirring component not contact the inner wall of the bin body, the wear of the inner wall of the bin body can be reduced, protecting the bin body from damage, and thus prolonging its service life.

[0044] Further, the stirring component includes a rotating shaft, a first propeller blade, a second propeller blade and a plurality of connecting rods; the first end of the rotating shaft is connected to the driving component, and the second end of the rotating shaft extends to the discharge end of the bin body; the first propeller blade is spirally fixed on the outer side wall of the rotating shaft in a clockwise / counterclockwise direction, and the second propeller blade is spirally arranged in a counterclockwise / clockwise direction and is fixedly connected to the first propeller blade or the rotating shaft through a plurality of the connecting rods; in the direction from the first end of the rotating shaft to the second end of the rotating shaft, the diameter of the second propeller blade decreases in sequence, so that the second propeller blade is in an inverted conical shape. Thus, in the powder bin provided by the present utility model, by connecting the first end of the rotating shaft to the driving component, the driving component can drive the rotating shaft to rotate; by extending the second end of the rotating shaft to the discharge end of the bin body, the powder at the discharge port can be stirred to avoid the powder from accumulating at the discharge port, thereby improving the discharge smoothness of the powder bin. By fixedly connecting the first propeller blade and the second propeller blade with opposite spiral directions on the rotating shaft, the powder can be driven to circulate in the bin body, avoiding the caking of the powder in the bin body, and thus improving the fluidity and stability of the discharge pipeline. Further, by making the diameter of the second propeller blade decrease in sequence in the direction from the first end of the rotating shaft to the second end of the rotating shaft, so that the second propeller blade is in an inverted conical shape, the powder in each area of the bin body can be fully stirred, thereby further reducing the caking rate of the powder in the bin body.

[0045] The baking soda conveying system provided by the present utility model includes the powder bin described in any one of the above, a first feeding device connected to the discharge pipeline of the powder bin, a grinding device connected to the first feeding device, and a second feeding device connected to the grinding device; the first feeding device is configured to convey the powder in the powder bin to the grinding device; the grinding device is configured to grind the received powder; the second feeding device is configured to convey the ground powder to a desulfurization tower. Thus, for the baking soda conveying system provided by the present utility model, by using the powder bin provided by the present utility model to store baking soda, the caking rate of baking soda can be reduced. By using the first feeding device to convey the baking soda in the powder bin to the grinding device, the continuity and efficiency of the grinding process can be ensured. By grinding the baking soda with the grinding device, the utilization efficiency of baking soda and the desulfurization effect can be improved. By using the second feeding device, the ground baking soda can be conveyed to the desulfurization tower, thereby achieving the desulfurization effect. In addition, since the baking soda conveying system provided by the present utility model includes the powder bin provided by the present utility model, therefore, the baking soda conveying system provided by the present utility model has at least all the advantages of the powder bin provided by the present utility model. For the advantages of the baking soda conveying system provided by the present utility model, please refer to the relevant description of the beneficial effects of the powder bin provided by the present utility model, and will not be elaborated here.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A powder bin, characterized in that, It includes a stirring device and a silo body. The stirring device includes a driving component arranged at the top of the silo body and a stirring component connected to the driving component and arranged inside the silo body; both the silo body and the stirring component are in an inverted conical shape, and the stirring component does not contact the inner wall of the silo body.

2. The powder bin according to claim 1, characterized in that, The driving component includes a motor mounting seat fixedly installed at the top of the silo body and a driving motor fixedly installed on the motor mounting seat. The driving end of the driving motor is connected to the stirring component.

3. The powder bin according to claim 1, characterized in that, The stirring component includes a rotating shaft, a first propeller blade, a second propeller blade, and several connecting rods; The first end of the rotating shaft is connected to the driving component, and the second end of the rotating shaft extends to the discharge end of the silo body; The first propeller blade is spirally fixed clockwise / counterclockwise on the outer sidewall of the rotating shaft. The second propeller blade is spirally arranged counterclockwise / clockwise and is fixedly connected to the first propeller blade or the rotating shaft through several connecting rods; in the direction from the first end of the rotating shaft to the second end of the rotating shaft, the diameter of the second propeller blade decreases in sequence, so that the second propeller blade is in an inverted conical shape.

4. The powder bin according to claim 1, wherein The silo body includes a cylinder body and a cone body connected to the bottom of the cylinder body; a support frame is arranged on the outer sidewall of the cylinder body, and a discharge port is arranged at the bottom of the cone body.

5. The powder bin according to claim 4, wherein, A level gauge is arranged on the outer sidewall of the cylinder body, and a vibrator is arranged on the outer sidewall of the cone body.

6. The powder silo according to claim 4, wherein An inspection opening is arranged on the outer sidewall of the cone body.

7. The powder silo according to claim 4, characterized in that, A knife gate valve is arranged on the discharge pipeline near the discharge port.

8. The powder bin according to claim 1, characterized in that, The stirring device and the silo body are coaxially arranged.

9. A baking soda delivery system, characterized in that, It includes a powder silo according to any one of claims 1 to 8, a first feeding device connected to the discharge pipeline of the powder silo, a grinding device connected to the first feeding device, and a second feeding device connected to the grinding device; The first feeding device is configured to convey the powder in the powder silo to the grinding device; The grinding device is configured to grind the received powder; The second feeding device is configured to convey the ground powder to a desulfurization tower.

10. The baking soda delivery system according to claim 9, characterized in that, The first feeding device includes a stirring feed bin connected to the discharge pipeline and a feeder connected to the stirring feed bin; the second feeding device includes a conveying fan connected to the grinding device.

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