Powdery phosphorus pentoxide spiral conveying device

Abstract

The utility model discloses a powdery phosphorus pentoxide spiral conveying device which comprises a machine shell, a feeding port, a discharging port and a spiral conveying mechanism, the machine shell comprises a cylinder, a fixed end cover and a movable end cover, the fixed end cover is installed at the end, close to the feeding port, of the cylinder, and the movable end cover is installed at the end, close to the discharging port, of the cylinder. The movable end cover is movably installed at the position, close to the discharging port, of the end of the cylinder through a limiting assembly, a knocking mechanism is arranged above the outer side of the cylinder, a feeding anti-blocking mechanism is arranged in the feeding port, a feeding conical hopper is arranged above the feeding port, a discharging control mechanism is arranged in the feeding conical hopper, and a discharging anti-blocking mechanism is arranged on the discharging port. According to the device, the interior of the cylinder can be cleaned in time, and powdery phosphorus pentoxide is prevented from being attached to the inner wall of the cylinder or a spiral conveying mechanism; and in addition, the feeding port and the discharging port can be dredged, the blocking phenomenon is prevented, and the conveying efficiency can be remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of phosphorus chemical production technology, specifically relating to a screw conveyor for powdered phosphorus pentoxide. Background Technology

[0002] Phosphorus pentoxide is a commonly used raw material and reagent in the chemical industry, widely applied in various fields. High-quality phosphorus pentoxide can also be used to produce high-purity phosphoric acid of various concentrations, especially polyphosphoric acid. Currently, the industrial preparation of phosphorus pentoxide generally adopts the oxidative combustion method: using yellow phosphorus as raw material, the yellow phosphorus is heated and melted and then added to a combustion furnace. Dry air is introduced into the combustion furnace to react and burn with the yellow phosphorus, generating phosphorus pentoxide flue gas. The phosphorus pentoxide flue gas is then cooled and settled to produce finished phosphorus pentoxide. The produced phosphorus pentoxide product is in granular form. To meet customer needs, the granular phosphorus pentoxide needs to be made into powder. In the aforementioned production system, the powdered phosphorus pentoxide, after grinding, is hygroscopic and rapidly absorbs moisture from the air upon exposure, causing it to deliquesce. Therefore, a screw conveyor is required for transporting the powdered phosphorus pentoxide during packaging. However, existing screw conveyors have the following drawbacks: First, both ends of the casing are fixed and cannot be opened, hindering internal cleaning and leading to blockages after prolonged use, thus affecting the normal transport of phosphorus pentoxide. Second, the existing inlet and outlet structures are simple, causing blockages during transport and preventing continuous, normal transport of phosphorus pentoxide within the casing, severely impacting efficiency. Therefore, developing a screw conveyor for powdered phosphorus pentoxide with a reasonable structure, capable of timely internal cleaning, and ensuring efficient operation is essential. Summary of the Invention

[0003] The purpose of this invention is to provide a screw conveyor for powdered phosphorus pentoxide that has a reasonable structure, can clean its interior in a timely manner, and can ensure efficient operation.

[0004] The purpose of this utility model is achieved as follows: it includes a housing, a feed inlet, a discharge outlet, and a screw conveyor mechanism. The housing includes a cylindrical body, a fixed end cover, and a movable end cover. The fixed end cover is installed at the end of the cylindrical body near the feed inlet, and the movable end cover is movably installed at the end of the cylindrical body near the discharge outlet via a limiting component. A striking mechanism is provided on the upper outer side of the cylindrical body. A feed anti-blocking mechanism is provided inside the feed inlet. A feed cone is provided above the feed inlet. A discharge control mechanism is provided inside the feed cone. A discharge anti-blocking mechanism is provided on the discharge outlet.

[0005] Compared with existing technologies, the advantages of this device are as follows: First, the device optimizes the structure of the casing. The movable end cover is installed on the cylindrical body using a limiting component. This allows the movable end cover to be opened after a period of use, facilitating timely cleaning of the inside of the cylindrical body and preventing powdered phosphorus pentoxide from adhering to the inner wall of the cylindrical body or the screw conveyor mechanism, thus effectively improving the conveying efficiency of powdered phosphorus pentoxide. Second, the feed anti-blocking mechanism disperses and discharges the powdered phosphorus pentoxide in the feed inlet, preventing blockage. The discharge anti-blocking mechanism also clears the discharge of powdered phosphorus pentoxide. To prevent powdered phosphorus pentoxide from clogging the discharge port, this design ensures continuous and efficient conveying of the powdered phosphorus pentoxide within the cylinder. Simultaneously, the feeding control mechanism within the feed cone regulates the amount of material entering the feed port, ensuring uniform feeding within the cylinder and further improving conveying efficiency. Additionally, the included tapping mechanism intermittently taps the outer wall of the cylinder to prevent material adhesion to the inner wall, reducing the difficulty of subsequent cleaning. This design guarantees long-term, efficient conveying of powdered phosphorus pentoxide, offering advantages such as reasonable structural design, high conveying efficiency, and good performance, making it easy to promote and use. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0007] Figure 2 This is an enlarged schematic diagram of the discharge anti-blocking mechanism in this utility model;

[0008] Figure 3 This is an enlarged schematic diagram of the limiting component 7 in this utility model;

[0009] In the diagram: 1-Feed inlet, 11-Rotating rod, 12-Driving pulley, 13-Driven pulley, 14-Transmission belt, 15-Discharging rod, 2-Discharge outlet, 21-Moving rod, 22-First motor, 23-First cam, 24-Moving plate, 25-First spring, 26-First shaft, 3-Screw feeding mechanism, 4-Fixed end cover, 5-Cylinder body, 51-Second motor, 52-Upper lifting plate, 53-Lower lifting plate, 54-Positioning plate, 5 5-Second rotating shaft, 56-Fixing plate, 57-Lifting rod, 58-Second spring, 59-Striking block, 6-Modible end cap, 7-Limiting assembly, 71-Limiting block, 72-Limiting rod, 73-Reset spring, 74-Connecting flange, 75-Interlocking groove, 76-Connecting groove, 77-Limiting groove, 78-Interlocking block, 79-Positioning groove, 710-Limiting plate, 8-Feeding cone, 81-Lifting cylinder, 82-Adjusting cone cap, 9-Ceramic layer. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0011] like Figures 1-3 As shown, this utility model includes a housing, a feed inlet 1, a discharge outlet 2, and a screw conveyor mechanism 3. The housing includes a cylindrical body 5, a fixed end cover 4, and a movable end cover 6. The fixed end cover 4 is installed at the end of the cylindrical body 5 near the feed inlet 1. The movable end cover 6 is movably installed at the end of the cylindrical body 5 near the discharge outlet 2 via a limiting component 7. A striking mechanism is provided above the outer side of the cylindrical body 5. A feed anti-blocking mechanism is provided inside the feed inlet 1. A feed cone 8 is provided above the feed inlet 1. A discharge control mechanism is provided inside the feed cone 8. A discharge anti-blocking mechanism is provided on the discharge outlet 2.

[0012] The working process of this utility model is as follows: Processed powdered phosphorus pentoxide enters the cylindrical body 5 through the feed inlet 1. An anti-blocking mechanism is installed inside the feed inlet 1 to disperse the powdered phosphorus pentoxide and prevent blockage. A feeding mechanism controls the amount of phosphorus pentoxide fed into the feed inlet 1 to avoid excessive feeding and blockage. After the powdered phosphorus pentoxide enters the feed inlet, the screw conveyor mechanism 3 is activated. The screw conveyor structure 3 then conveys the powdered phosphorus pentoxide into the cylindrical body 5. The powdered phosphorus pentoxide is uniformly and continuously conveyed towards the discharge port 2. When the powdered phosphorus pentoxide enters the discharge port 2, the discharge anti-blocking mechanism will loosen the powdered phosphorus pentoxide and discharge it, preventing it from clogging at the discharge port 2. At the same time, during the conveying process of the powdered phosphorus pentoxide in the cylinder 5, the set knocking mechanism can intermittently knock the outer wall of the cylinder 5 to prevent the powdered phosphorus pentoxide from sticking to the inner wall of the cylinder 5. This can reduce the difficulty of subsequent cleaning of the inner wall of the cylinder 5 and improve the conveying efficiency of the powdered phosphorus pentoxide.

[0013] Furthermore, the feed anti-blocking mechanism includes a rotating rod 11, a driving pulley 12, a driven pulley 13, and a transmission belt 14. The rotating rod 11 is rotatably mounted on the feed inlet 1. A material unloading rod 15 is mounted on the rotating rod 11 located inside the feed inlet 1. The driven pulley 13 is mounted on the rotating rod 11 located outside the feed inlet 1. The driving pulley 12 is mounted on the screw conveyor mechanism 3. The transmission belt 14 is wound between the driving pulley 12 and the driven pulley 13. The screw conveyor mechanism 3 is a conventional method. The structure mainly includes a drive motor and a conveying auger connected to the drive motor. The drive pulley 12 is installed at one end of the conveying auger. When the drive motor drives the conveying auger to rotate, it drives the drive pulley 12 to rotate. The rotation of the drive pulley 12 will drive the driven pulley 13 to rotate through the transmission belt 14, which in turn drives the rotating rod 11 and the material unloading rod 15 to rotate. The rotating material unloading rod 15 will disperse and loosen the powdered phosphorus pentoxide in the feed inlet 1, so as to avoid the accumulation in the feed inlet and cause the feed inlet 1 to be blocked.

[0014] Furthermore, the feeding control mechanism includes a lifting cylinder 81 and an adjusting cone cap 82. The lifting cylinder 81 is a structure used in the prior art, and finished products can be directly purchased according to parameters such as operating pressure and stroke size. A support frame is installed inside the feeding cone 8, and the fixed end of the lifting cylinder 81 is installed on the support frame. The adjusting cone cap 82 is located above the lifting cylinder 81 and is fixedly connected to the movable end of the lifting cylinder 81. In use, the movable end of the lifting cylinder 81 is extended or retracted. The extension or retraction of the movable end can drive the adjusting cone cap 82 to rise or fall. During the rising or falling of the adjusting cone cap 82, the gap between it and the feeding cone 8 can be adjusted, thereby realizing the adjustment of the feeding amount.

[0015] Furthermore, the discharge anti-blocking mechanism includes a movable rod 21, a first motor 22, and a first cam 23. The first motor 22 is a structure used in the prior art, and a finished product can be directly purchased according to the power required. Multiple through holes are machined on one side of the discharge port 2. The movable rod 21 slides through these through holes. A movable plate 24 is installed at the end of the movable rod located outside the discharge port 2. A first spring 25 is installed on the movable rod 21 between the movable plate 24 and the discharge port 2. The first motor 22 is installed at the bottom of the cylindrical body 5. A first rotating shaft 26 is installed on the output shaft of the first motor 22. The first cam 23 is installed on the first rotating shaft 26 and makes movable contact with the movable plate 24. In use, the first cam 23 is activated. A motor 22 drives a first cam 23 to rotate. During the rotation, the first cam 23 intermittently slides into contact with the movable plate 24. When the first cam 23 contacts the movable plate 24, it pushes the movable plate 24 to move, compressing the first spring 25. The length of the movable rod 21 in the discharge port 2 is extended. When the first cam 23 is no longer in contact with the movable plate 24, the first spring 25 returns to its original position, which drives the movable rod 21 and the movable plate 24 to move back to their original positions. Through this sliding contact, the movable rod 21 can slide back and forth in the discharge port 2, thereby achieving the discharge of powdered phosphorus pentoxide in the discharge port 2 and preventing the discharge port 2 from being blocked.

[0016] Furthermore, the striking mechanism includes a second motor 51, an upper lifting plate 52, and a lower lifting plate 53. The second motor 51 is a structure used in the prior art, and a finished product can be directly purchased according to the power required. Two positioning plates 54 are symmetrically arranged on the top of the outer side of the cylindrical body 5. A second rotating shaft 55 is rotatably mounted on the positioning plate 54. The second motor 51 is installed on the outer side of the positioning plate 54 and is connected to one end of the second rotating shaft 55. A fixing plate 56 is installed between the two positioning plates 54 below the second rotating shaft 55. The upper lifting plate 52 is arranged parallel above the fixing plate 56, and the lower lifting plate 53 is arranged parallel below the fixing plate 56. Multiple lifting rods 57 are slidably installed at equal intervals on the fixing plate 56. The upper end of the lifting rod 57 is fixedly connected to the upper lifting plate 52, and the lower end of the lifting rod 57 is fixedly connected to the lower lifting plate 53. A second spring 58 is installed on the lifting rod 57 between the fixing plate 56 and the lower lifting plate 53. Multiple striking blocks 59 are evenly distributed on the bottom surface of the lower lifting plate 53. Multiple second cams 510 are evenly spaced along the axial direction on the second rotating shaft 55. The second cams 510 slide in contact with the top surface of the upper lifting plate 52. In use, the second motor 51 is turned on, which drives the second rotating shaft 55 to rotate. During the rotation of the second rotating shaft 55, the multiple second cams 510 will rotate. When the second cams 510 rotate, they will slide in contact with the upper lifting plate 52. When the first cam 510 contacts the upper lifting plate 52, it will press the upper lifting plate. When 52 moves down, the second spring 58 is compressed, which will cause the lifting rod 57 and the lower lifting plate 53 to move down. When the lower lifting plate 53 moves down, the striking block 59 contacts the cylindrical body 5, which will knock the outer wall of the cylindrical body 5, thereby vibrating down the powdered phosphorus pentoxide adhering to the inner wall of the cylindrical body 5. When the second wheel cam 510 is no longer in contact with the upper lifting plate 57, the second spring 58 will return to its original position. Using the elasticity of the second spring 58, the upper lifting plate 52, the lifting rod 57 and the lower lifting plate 53 will be driven to move up and return to their original positions.

[0017] Furthermore, the limiting component 7 includes a limiting block 71, a limiting rod 72, and a return spring 73. A connecting flange 74 is fixedly installed on the outer wall of the cylindrical body 5. Multiple insertion slots 75 are evenly distributed on the connecting flange 74 near the movable end cover 6. Multiple communicating slots 76 corresponding to the insertion slots 75 are machined on the outer edge of the connecting flange 74. A limiting groove 77 communicating with the connecting flange between the communicating slot 76 and the insertion slot 75 is machined on the connecting flange. The size of the limiting groove 77 is larger than the diameter of the communicating slot 76. Multiple insertion blocks 78 corresponding to the insertion slots 75 are provided on one side of the movable end cover 6. The insertion blocks 78 are movably inserted into the insertion slots 75. Positioning slots 79 corresponding to the limiting grooves 77 are machined on the insertion blocks 78. The limiting block 71 is slidably installed in the limiting grooves 77 and the positioning slots 79. The limiting rod 72 is provided through the communicating slot 76. One end of the limiting rod 72 is connected to the limiting flange 73. The positioning block 71 is fixedly installed, and the other end of the limiting rod 72 is equipped with a limiting plate 710. The return spring 73 is installed on the limiting rod located in the limiting groove 77. When it is necessary to clean the inside of the cylindrical body 5, the limiting plate 710 can be pulled outward at the same time. The limiting plate 710 pulls the limiting rod 72 outward. During the outward movement of the limiting rod 72, the return spring 73 is compressed, which can pull the limiting block 71 out of the limiting groove 77 and the positioning groove 79. After releasing the limiting position of the plug-in block 78, the movable end cap 6 can be removed from one end of the cylindrical body 5 to clean the inside of the cylindrical body 5. After cleaning, the plug-in block 78 of the movable end cap 6 is inserted into the plug-in groove 75. Then, the limiting plate 710 is released, and the return spring 73 extends back to its original position. Using the elasticity of the return spring 73, the limiting block 71 can be moved into the limiting groove 77 and the positioning groove 79, thus limiting the plug-in block 78. Preferably, in order to ensure the stable operation of the screw conveyor mechanism 3 and prevent bending deformation, a boss is provided on the movable end cap 6 near the cylindrical body 5. The boss is movably installed inside the cylindrical body 5, and a rotating groove is machined at the center of the boss. One end of the screw conveyor mechanism 3 is rotatably installed in the rotating groove.

[0018] Furthermore, in order to reduce excessive adhesion of powdered phosphorus pentoxide to the inner wall of the cylinder and improve the conveying efficiency of powdered phosphorus pentoxide over a long period of time, a ceramic layer 9 is provided on the inner wall of the cylinder 5.

Claims

1. A screw conveyor for powdered phosphorus pentoxide, comprising a housing, an inlet (1), an outlet (2), and a screw conveying mechanism (3), characterized in that: The housing includes a cylindrical body (5), a fixed end cap (4), and a movable end cap (6). The fixed end cap (4) is installed at the end of the cylindrical body (5) near the feed inlet (1). The movable end cap (6) is movably installed at the end of the cylindrical body (5) near the discharge outlet (2) via a limiting component (7). A striking mechanism is provided above the outer side of the cylindrical body (5). A feed anti-blocking mechanism is provided inside the feed inlet (1). A feed cone (8) is provided above the feed inlet (1). A discharge control mechanism is provided inside the feed cone (8). A discharge anti-blocking mechanism is provided on the discharge outlet (2).

2. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: The feed anti-blocking mechanism includes a rotating rod (11), a driving pulley (12), a driven pulley (13), and a transmission belt (14). The rotating rod (11) is rotatably mounted on the feed inlet (1). A material unloading rod (15) is mounted on the rotating rod (11) located inside the feed inlet (1). The driven pulley (13) is mounted on the rotating rod (11) located outside the feed inlet (1). The driving pulley (12) is mounted on the screw conveyor mechanism (3). The transmission belt (14) is wound between the driving pulley (12) and the driven pulley (13).

3. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: The feeding control mechanism includes a lifting cylinder (81) and an adjusting cone cap (82). A support frame is installed inside the feeding cone hopper (8). The fixed end of the lifting cylinder (81) is installed on the support frame. The adjusting cone cap (82) is located above the lifting cylinder (81) and is fixedly connected to the movable end of the lifting cylinder (81).

4. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: The discharge anti-blocking mechanism includes a movable rod (21), a first motor (22), and a first cam (23). Multiple through holes are machined on one side of the discharge port (2). The movable rod (21) slides through the through holes. A movable plate (24) is installed at the end of the movable rod located outside the discharge port (2). A first spring (25) is installed on the movable rod (21) between the movable plate (24) and the discharge port (2). The first motor (22) is installed at the bottom of the cylindrical body (5). A first rotating shaft (26) is installed on the output shaft of the first motor (22). The first cam (23) is installed on the first rotating shaft (26) and makes movable contact with the movable plate (24).

5. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: The striking mechanism includes a second motor (51), an upper lifting plate (52), and a lower lifting plate (53). Two positioning plates (54) are symmetrically arranged on the top of the outer side of the cylindrical body (5). A second rotating shaft (55) is rotatably mounted on the positioning plate (54). The second motor (51) is installed on the outer side of the positioning plate (54) and is connected to one end of the second rotating shaft (55). A fixing plate (56) is installed between the two positioning plates (54) below the second rotating shaft (55). The upper lifting plate (52) is parallel to the upper surface of the fixing plate (56), and the lower lifting plate (53) is parallel to the lower surface of the fixing plate (56). Multiple lifting rods (57) are slidably installed at equal intervals on the fixed plate (56). The upper end of the lifting rod (57) is fixedly connected to the upper lifting plate (52), and the lower end of the lifting rod (57) is fixedly connected to the lower lifting plate (53). A second spring (58) is installed on the lifting rod (57) between the fixed plate (56) and the lower lifting plate (53). Multiple striking blocks (59) are evenly distributed on the bottom surface of the lower lifting plate (53). Multiple second cams (510) are installed at equal intervals along the axial direction on the second rotating shaft (55). The second cams (510) slide in contact with the top surface of the upper lifting plate (52).

6. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: The limiting component (7) includes a limiting block (71), a limiting rod (72), and a return spring (73). A connecting flange (74) is fixedly installed on the outer wall of the cylindrical body (5). Multiple insertion slots (75) are evenly distributed on the connecting flange (74) near the movable end cap (6). Multiple communicating slots (76) corresponding to the insertion slots (75) are processed on the outer edge of the connecting flange (74). A limiting groove (77) communicating with the connecting flange between the communicating slot (76) and the insertion slot (75) is processed. The size of the limiting groove (77) is larger than the diameter of the communicating groove (76). The movable end cap (6) On one side, there are multiple plug-in blocks (78) corresponding to the plug-in slot (75). The plug-in blocks (78) are movably inserted into the plug-in slot (75). The plug-in blocks (78) are machined with positioning slots (79) corresponding to the limiting slot (77). The limiting block (71) is slidably installed in the limiting slot (77) and the positioning slot (79). The limiting rod (72) is installed through the connecting slot (76). One end of the limiting rod (72) is fixedly installed with the limiting block (71). The other end of the limiting rod (72) is installed with a limiting plate (710). The reset spring (73) is installed on the limiting rod located in the limiting slot (77).

7. The screw conveyor for powdered phosphorus pentoxide according to claim 6, characterized in that: A boss is provided on the movable end cap (6) near the cylindrical body (5). The boss is movably installed inside the cylindrical body (5). A rotating groove is machined at the center of the boss. One end of the spiral conveying mechanism (3) is rotatably installed in the rotating groove.

8. The screw conveyor for powdered phosphorus pentoxide according to claim 1, characterized in that: A ceramic layer (9) is provided on the inner wall of the cylindrical body (5).

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