Polyaluminum chloride drying equipment for phosphorus oxychloride production

Abstract

The invention relates to the technical field of polyaluminum chloride drying equipment, in particular to polyaluminum chloride drying equipment for phosphorus oxychloride production, which at least comprises a spray tower body and an air sweeping assembly rotatably arranged in the spray tower body. The air sweeping assembly at least comprises a middle shaft assembly rotationally arranged in the center of the bottom of the tower body shell, air sweeping swing arms evenly distributed at the upper end of the middle shaft assembly in the circumferential direction and communicated with the middle shaft assembly, and an adjusting assembly arranged in the middle shaft assembly and used for adjusting the ventilation capacity of the air sweeping swing arms. The outer edges of the three air sweeping swing arms are tightly attached to the inner wall of the tower body shell. According to the polyaluminum chloride drying equipment, the three air sweeping swing arms are arranged to conduct air injection cleaning on the inner wall of the tower body shell, the center shaft assembly conducts air injection cleaning on the inner wall of the tower body shell three times every time the center shaft assembly rotates by a circle, and the air injection frequency and the cleaning effect are greatly improved; according to the polyaluminum chloride drying equipment, the respective air output of the upper subareas and the lower subareas of the three air sweeping swing arms can be synchronously adjusted.

Description

Technical Field

[0001] This application relates to the technical field of polyaluminum drying equipment, and particularly to a polyaluminum drying equipment for the production of phosphorus oxychloride. Background Art

[0002] The waste materials (such as phosphorus-containing wastewater) generated in the production process of phosphorus oxychloride need to be treated with polyaluminum powder. The production process of polyaluminum powder relies on a spray drying tower, which can dry the liquid polyaluminum chloride solution to obtain polyaluminum solid powder that is convenient for transportation and storage. The spray drying tower is a commonly used polyaluminum drying equipment, which at least includes a drying tower body, a feeding device, an atomizing device, a hot air device, etc. During daily operation, the most influential problem affecting the operation efficiency of the equipment is material adhesion, that is, the spray generated by the atomizing device falls on the inner wall of the tower body shell before being completely dried, and then adheres into blocks. Therefore, one or more air sweeping devices that fit the inner wall of the tower body shell and rotate in a circle are usually arranged in the inner cavity of the tower body shell. However, the existing air sweeping devices have the following problems: It is impossible to achieve the air outlet mode of the upper and lower partitions of the air sweeping device, and it is even more impossible to adjust the air outlet volume of each of the upper and lower partitions of multiple air sweeping devices. The conical section of the lower half of the tower body shell is more likely to have material adhesion than the straight cylinder section of the upper half. Therefore, it is necessary to ensure that the air outlet volume of the lower half area of the air sweeping device is greater than that of the upper half area; further, adjusting the air outlet volume of each of the upper and lower partitions will also necessarily change their relative ratio, and different cleaning effects can be achieved. Summary of the Invention

[0003] A polyaluminum drying equipment for the production of phosphorus oxychloride at least includes a spray tower body and an air sweeping assembly rotatably arranged in the spray tower body. The spray tower body at least includes an external support and a tower body shell. The air sweeping assembly at least includes a central axis assembly rotatably arranged at the center of the bottom of the tower body shell, air sweeping swing arms circumferentially and evenly distributed at the upper end of the central axis assembly and communicated with the central axis assembly, and an adjustment assembly arranged in the central axis assembly for adjusting the air ventilation volume of the air sweeping swing arms.

[0004] The central axis assembly includes a lower transmission pipe penetrating the bottom of the tower body shell and an upper sealing cylinder communicated above the lower transmission pipe. Three guiding slide rails are circumferentially and evenly distributed on the inner wall of the upper sealing cylinder. Each guiding slide rail is respectively provided with an upper air outlet hole and a lower air outlet hole. A valve rod perforation is provided at the lower end of the lower transmission pipe. A hollow disk body is also provided at the lower end of the lower transmission pipe. A side cut is formed by cutting one side of the hollow disk body; as a further implementation, both the upper air outlet hole and the lower air outlet hole are rectangular holes with a height greater than the width.

[0005] There are three air-sweeping swing arms, and the outer edges of the air-sweeping swing arms are closely attached to the inner wall of the tower shell; the air-sweeping swing arms include a horizontal connecting pipe communicated with the upper air outlet hole, a vertical spray pipe communicated and arranged above the distal end of the horizontal connecting pipe, an inclined connecting pipe communicated with the lower air outlet hole, and an inclined spray pipe communicated and arranged at the distal end of the inclined connecting pipe. The sides of the vertical spray pipe and the inclined spray pipe close to the inner wall of the tower shell are densely provided with cleaning air holes. The lower end of the vertical spray pipe is fixedly connected to the upper end of the inclined spray pipe but not communicated with each other; further, the air-sweeping swing arm further includes an upper transition pipe connecting the horizontal connecting pipe and the upper air outlet hole, and a lower transition pipe connecting the inclined connecting pipe and the lower air outlet hole; further, the air-sweeping swing arm further includes a sliding roller arranged above the vertical spray pipe for abutting against the inner wall of the tower shell.

[0006] The adjustment assembly includes a lifting valve rod, a partition air valve, a synchronous thread ring, and an individual regulator; The lifting valve rod is slidably arranged in the central axis assembly. The lifting valve rod includes a cylindrical rod body passing through the valve rod perforation and the hollow disc body, and three air valve slots circumferentially and uniformly arranged on the upper half of the outer wall of the cylindrical rod body. Each air valve slot is respectively provided with a through longitudinal hole at the lower end, and each through longitudinal hole is respectively provided with a limit ring groove. The lower end of the outer wall of the cylindrical rod body is provided with a rod body thread; There are three partition air valves. The partition air valve includes an air valve housing in a hollow arc shape. The lower end of the air valve housing is open and the upper end is closed. The partition air valve further includes a guiding groove formed on the outer arc surface of the air valve housing and slidably matched with the guiding slide rail, an adjustment air hole arranged on the guiding groove, and an internal thread sleeve arranged on the inner arc surface of the air valve housing and inserted and matched with the air valve slot; The synchronous thread ring is rotatably arranged in the hollow disc body and screwed with the rod body thread. The side surface of the synchronous thread ring is exposed from the side cut; There are three individual regulators. The individual regulator includes an adjustment core column rotatably arranged in the through longitudinal hole, a limit convex ring formed on the outer wall of the adjustment core column and rotatably matched with the limit ring groove, and an adjustment thread arranged on the upper edge of the outer wall of the adjustment core column and meshed with the internal thread sleeve.

[0007] As a further implementation: The air-sweeping assembly further includes a rotating air delivery assembly arranged at the lower end of the tower shell. The rotating air delivery assembly includes a tower body component and a central axis component; The tower body component includes a cylindrical base arranged at the lower end of the tower shell. The inner wall of the cylindrical base is sequentially provided with a transmission circular cavity, a bearing circular cavity, and a ventilation circular cavity from top to bottom. The side wall of the transmission circular cavity is further provided with a transmission side port, and the side wall of the ventilation circular cavity is further provided with an air inlet pipeline; The central axis assembly includes a driven pulley provided on the outer wall of the lower transmission pipe and located within the transmission circular cavity, a bearing assembly provided on the outer wall of the lower transmission pipe and located within the bearing circular cavity, and a rotating air disc provided on the outer wall of the lower transmission pipe and located within the ventilation circular cavity. The rotating air disc is circumferentially and uniformly provided with air disc side holes. The driven pulley is connected to a synchronous belt disposed through the transmission side port, and the synchronous belt is drivingly connected to a power device.

[0008] The beneficial effects that the above technical solution can achieve are as follows: In a polyaluminum drying device described in this case, three air-sweeping swing arms are provided to blow air and clean the inner wall of the tower body shell. Each time the central axis assembly rotates one week, the inner wall of the tower body shell is blown and cleaned three times, greatly increasing the air-blowing frequency and cleaning effect. Moreover, the three air-sweeping swing arms are distributed in a triangular shape within the plane, effectively increasing the overall structural strength of the air-sweeping swing arms.

[0009] In a polyaluminum drying device described in this case, the air output of each of the upper and lower zones of the three air-sweeping swing arms can be synchronously adjusted: The lower the position of the partition air valve, the greater the coincidence degree between the adjustment air hole and the lower air outlet hole, and the more air flow enters the inclined spray pipe through the inclined connecting pipe, relatively increasing the cleaning effect on the conical section of the lower half of the inner wall of the tower body shell. At the same time, the coincidence degree between the adjustment air hole and the upper air outlet hole becomes smaller, and the air flow entering the vertical spray pipe through the horizontal connecting pipe becomes smaller, relatively reducing the cleaning effect on the straight cylinder section of the upper half of the inner wall of the tower body shell.

[0010] In a polyaluminum drying device described in this case, the air output of each of the upper and lower zones of any air-sweeping swing arm can also be individually adjusted: Rotate the adjustment core column, the limit convex ring, and the adjustment thread; the adjustment thread rotates and acts on the corresponding internal thread sleeve, thereby driving the corresponding partition air valve to move up and down relative to the lifting valve rod, and then individually adjusting the air output of each of the upper and lower zones of the corresponding air-sweeping swing arm. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic diagram of an embodiment of the polyaluminum drying device described in this case.

[0013] Figure 2 It is a cross-sectional view of an embodiment of the polyaluminum drying device described in this case.

[0014] Figure 3It is a schematic diagram of an embodiment of the air-sweeping assembly.

[0015] Figure 4 It is a schematic diagram of the first state of the central shaft assembly and the adjustment assembly.

[0016] Figure 5 It is a schematic diagram of the second state of the central shaft assembly and the adjustment assembly.

[0017] Figure 6 It is a schematic diagram of an embodiment of the central shaft assembly.

[0018] Figure 7 It is a cross-sectional view of an embodiment of the central shaft assembly.

[0019] Figure 8 It is a schematic diagram of an embodiment of the air-sweeping swing arm.

[0020] Figure 9 It is a schematic diagram of an embodiment of the adjustment assembly.

[0021] Figure 10 It is an isometric cross-sectional view (cross-section) of an embodiment of the adjustment assembly.

[0022] Figure 11 It is an isometric cross-sectional view (longitudinal section) of an embodiment of the adjustment assembly.

[0023] Figure 12 It is an isometric cross-sectional view (cross-section) of an embodiment of the lifting valve stem.

[0024] Figure 13 It is an isometric cross-sectional view (longitudinal section) of an embodiment of the lifting valve stem.

[0025] Figure 14 It is an isometric cross-sectional view of an embodiment of the partition air valve.

[0026] Figure 15 It is Figure 2 An enlarged schematic diagram of part A in the figure.

[0027] In the figure: 9. Spray tower body, 91. External bracket, 92. Tower body shell; 8. Air-sweeping assembly; 1. Central shaft assembly, 11. Lower transmission pipe, 12. Upper sealing cylinder, 13. Guide rail, 14. Upper air outlet hole, 15. Lower air outlet hole, 16. Valve stem perforation, 17. Hollow disc body, 18. Side cut; 2. Air-sweeping swing arm, 21. Horizontal connecting pipe, 22. Vertically arranged spray pipe, 23. Oblique connecting pipe, 24. Obliquely arranged spray pipe, 25. Upper transition pipe, 26. Lower transition pipe, 27. Sliding roller; 3. Adjustment assembly; 31. Lifting valve rod, 311. Cylindrical rod body, 312. Air valve slot, 313. Through longitudinal hole, 314. Limit ring groove, 315. Rod body thread, 316. Axial air groove; 32. Partition air valve, 321. Air valve housing, 322. Guide groove, 323. Adjustment air hole, 324. Internal thread sleeve; 33. Synchronous thread ring; 34. Separate regulator, 341. Adjustment core column, 342. Limit convex ring, 343. Adjustment thread; 4. Rotating air delivery assembly; 41. Tower body assembly, 411. Cylindrical base, 412. Transmission circular cavity, 413. Bearing circular cavity, 414. Ventilation circular cavity, 415. Transmission side port, 416. Inlet pipeline; 42. Central axis assembly, 421. Driven pulley, 422. Bearing assembly, 423. Rotating air disc, 424. Air disc side hole. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of the embodiments.

[0029] A polyaluminum drying device for the production of phosphorus oxychloride includes at least a spray tower body 9 and an air sweeping assembly 8 rotatably arranged in the spray tower body 9. The spray tower body 9 at least includes an external support 91 and a tower body housing 92; The air sweeping assembly 8 at least includes a central axis assembly 1 rotatably arranged at the center of the bottom of the tower body housing 92, air sweeping swing arms 2 circumferentially and evenly distributed at the upper end of the central axis assembly 1 and communicated with the central axis assembly 1, and an adjustment assembly 3 arranged in the central axis assembly 1 for adjusting the air volume of the air sweeping swing arms 2.

[0030] The central axis assembly 1 includes a lower transmission pipe 11 penetrating through the bottom of the tower body housing 92 and an upper sealing cylinder 12 communicatively arranged above the lower transmission pipe 11. Three guiding slide rails 13 are circumferentially and evenly distributed on the inner wall of the upper sealing cylinder 12. Each guiding slide rail 13 is respectively provided with an upper air outlet 14 and a lower air outlet 15. A valve rod perforation 16 is provided at the lower end of the lower transmission pipe 11. A hollow disc body 17 is further provided at the lower end of the lower transmission pipe 11. A side cut 18 is formed by cutting one side of the hollow disc body 17; As a further implementation solution, both the upper air outlet 14 and the lower air outlet 15 are rectangular holes with a height greater than the width.

[0031] There are three air-sweeping swing arms 2, and the outer edge of the air-sweeping swing arm 2 is closely arranged along the inner wall of the tower shell 92; the air-sweeping swing arm 2 includes a horizontal connecting pipe 21 communicated with the upper air outlet 14, a vertically arranged spray pipe 22 communicated and arranged above the far end of the horizontal connecting pipe 21, an inclined connecting pipe 23 communicated with the lower air outlet 15, and an inclined spray pipe 24 communicated and arranged at the far end of the inclined connecting pipe 23. The side of the vertically arranged spray pipe 22 and the inclined spray pipe 24 close to the inner wall of the tower shell 92 is densely provided with cleaning air holes. The lower end of the vertically arranged spray pipe 22 is fixedly connected to the upper end of the inclined spray pipe 24 but they are not communicated with each other; further, the air-sweeping swing arm 2 further includes an upper transition pipe 25 connecting the horizontal connecting pipe 21 and the upper air outlet 14, and a lower transition pipe 26 connecting the inclined connecting pipe 23 and the lower air outlet 15; further, the air-sweeping swing arm 2 further includes a sliding roller 27 arranged above the vertically arranged spray pipe 22 for abutting against the inner wall of the tower shell 92.

[0032] The adjustment assembly 3 includes a lifting valve rod 31, a partition air valve 32, a synchronous thread ring 33, and an individual regulator 34; The lifting valve rod 31 is slidably arranged in the central shaft assembly 1. The lifting valve rod 31 includes a cylindrical rod body 311 penetrating through the valve rod perforation 16 and the hollow disk body 17, three air valve slots 312 circumferentially and uniformly distributed on the upper half of the outer wall of the cylindrical rod body 311. Each lower end of each air valve slot 312 is respectively provided with a through longitudinal hole 313, and each through longitudinal hole 313 is respectively provided with a limit ring groove 314. The lower end of the outer wall of the cylindrical rod body 311 is provided with a rod body thread 315; There are three partition air valves 32. The partition air valve 32 includes an air valve housing 321 in the shape of a hollow arc. The lower end of the air valve housing 321 is open and the upper end is closed. The partition air valve 32 further includes a guiding groove 322 formed on the outer arc surface of the air valve housing 321 and slidably matched with the guiding slide rail 13, an adjustment air hole 323 arranged on the guiding groove 322, and an internal thread sleeve 324 arranged on the inner arc surface of the air valve housing 321 and inserted and matched with the air valve slot 312; The synchronous thread ring 33 is rotatably arranged in the hollow disk body 17 and is screwed with the rod body thread 315. The side surface of the synchronous thread ring 33 is exposed from the side cut 18; There are three individual regulators 34. The individual regulator 34 includes an adjustment core column 341 rotatably arranged in the through longitudinal hole 313, a limit convex ring 342 formed on the outer wall of the adjustment core column 341 and rotatably matched with the limit ring groove 314, and an adjustment thread 343 arranged on the upper edge of the outer wall of the adjustment core column 341 and meshed with the internal thread sleeve 324.

[0033] Further, the outer wall of the cylindrical rod body 311 is also circumferentially and uniformly provided with axial air grooves 316 staggered with the through longitudinal holes 313.

[0034] Furthermore, the air valve slot 312 is a groove with a wider inner cross-section and a narrower outer cross-section.

[0035] Furthermore, the outer arc surfaces of the three air valve housings 321 form a complete circumference.

[0036] As a further implementation: The air-sweeping assembly 8 further includes a rotating gas transmission assembly 4 provided at the lower end of the tower body housing 92. The rotating gas transmission assembly 4 includes a tower body assembly 41 and a central shaft assembly 42; The tower body assembly 41 includes a cylindrical base 411 provided at the lower end of the tower body housing 92. The inner wall of the cylindrical base 411 is successively provided with a transmission circular cavity 412, a bearing circular cavity 413, and a ventilation circular cavity 414 from top to bottom. The side wall of the transmission circular cavity 412 is further provided with a transmission side port 415, and the side wall of the ventilation circular cavity 414 is further provided with an intake pipeline 416; The central shaft assembly 42 includes a driven pulley 421 provided on the outer wall of the lower transmission pipe 11 and located in the transmission circular cavity 412, a bearing assembly 422 provided on the outer wall of the lower transmission pipe 11 and located in the bearing circular cavity 413, and a rotating air disk 423 provided on the outer wall of the lower transmission pipe 11 and located in the ventilation circular cavity 414. The rotating air disk 423 is circumferentially and uniformly provided with air disk side holes 424. The driven pulley 421 is connected with a synchronous belt passing through the transmission side port 415, and the synchronous belt is drivingly connected with a power device.

[0037] It should be noted that a sealing cushion layer is provided on the part of the outer wall of the guiding groove 322 except the adjusting air holes 323 to prevent air flow from leaking through the gap between the guiding groove 322 and the guiding slide rail 13 to the upper air outlet 14 and the lower air outlet 15.

[0038] It should be noted that sealing cushion layers are respectively provided on the upper and lower ends of the rotating air disk 423 and are in contact with the upper and lower walls of the ventilation circular cavity 414, so that gas can enter the rotating air disk 423 and the central shaft assembly 1 through the air disk side holes 424 as much as possible to avoid leakage.

[0039] In the polyaluminum drying equipment described in this case, the liquid material is sprayed into mist by the spraying equipment at the center of the upper end surface of the tower body housing 92. Under the action of the hot air distributor, the mist is quickly dried to form tiny particles, and the particles fall on the inner wall of the tower body housing 92 and slide down under the action of gravity.

[0040] The rotating gas transmission assembly 4 described in this case can enable the central shaft assembly 1 and the air-sweeping swing arm 2 to spray gas while rotating: Rotating action: The output shaft of the power device (driving motor) is provided with a driving pulley. The driving pulley rotates and drives the driven pulley 421 to rotate through the synchronous belt, realizing the rotation of the central shaft assembly 42, the central shaft assembly 1, and the air-sweeping swing arm 2.

[0041] Jetting action: The intake pipeline 416 is connected to a positive pressure air source. The air flow enters the lower drive pipe 11 and the upper sealing cylinder 12 via the intake pipeline 416 and the side holes 424 of the air disc, and then enters the inside of the air valve housing 321 through the lower opening of the air valve housing 321. The gas in the air valve housing 321 flows out in two paths: One path flows into the upper transition pipe 25, the horizontal connecting pipe 21, and the vertically arranged nozzle 22 via the adjustment air hole 323 and the upper air outlet hole 14, and jets and cleans the straight section of the upper half of the inner wall of the tower shell 92 through the vertically arranged nozzle 22; The other path flows into the lower transition pipe 26, the inclined connecting pipe 23, and the inclined nozzle 24 via the adjustment air hole 323 and the lower air outlet hole 15, and jets and cleans the conical section of the lower half of the inner wall of the tower shell 92 through the inclined nozzle 24.

[0042] The air sweeping assembly 8 described in this case can synchronously adjust the air output of the upper and lower partitions of the three air sweeping swing arms 2 respectively, so that the air output of the inclined nozzle 24 at the lower part of the air sweeping swing arm 2 is greater than that of the vertically arranged nozzle 22, and then jets and cleans the conical section of the lower half of the inner wall of the tower shell 92 with relatively higher intensity: When the central axis assembly 1 and the air sweeping swing arm 2 are in a stopped state, rotate the synchronous thread ring 33; The synchronous thread ring 33 rotates and acts on the rod thread 315, and then drives the lifting valve rod 31 and the three partition air valves 32 to lift; As shown in the attached Figures 4-5 instructions: The longitudinal position of the adjustment air hole 323 of the partition air valve 32 moves downward, and the overlapping part of the adjustment air hole 323 and the upper air outlet hole 14 gradually becomes smaller, so that the air output of the upper air outlet hole 14 becomes smaller. At the same time, the overlapping part of the adjustment air hole 323 and the lower air outlet hole 15 gradually becomes larger, so that the air output of the lower air outlet hole 15 becomes larger.

[0043] Furthermore, in this case, the air output of the upper and lower partitions of any air sweeping swing arm 2 can be adjusted separately: Rotate the adjustment core column 341, the limit convex ring 342, and the adjustment thread 343; The adjustment thread 343 rotates and acts on the corresponding internal thread sleeve 324, and then drives the corresponding partition air valve 32 to lift relative to the lifting valve rod 31, adjusts the overlapping area of the adjustment air hole 323 with the upper air outlet hole 14 and the lower air outlet hole 15, and finally adjusts the air output of the upper and lower partitions of the air sweeping swing arm 2 corresponding to the partition air valve 32 respectively.

Claims

1. A polyaluminum drying device for the production of phosphorus oxychloride, at least comprising a spray tower body (9) and a gas sweeping assembly (8) rotatably arranged in the spray tower body (9), characterized in that: The spray tower body (9) at least comprises an external support (91) and a tower body outer shell (92); The gas sweeping assembly (8) at least comprises a central shaft assembly (1) rotatably arranged at the center of the bottom of the tower body outer shell (92), gas sweeping swing arms (2) circumferentially and evenly arranged at the upper end of the central shaft assembly (1) and communicated with the central shaft assembly (1), and an adjustment assembly (3) arranged in the central shaft assembly (1) for adjusting the air volume of the gas sweeping swing arms (2); The central shaft assembly (1) comprises a lower transmission pipe (11) penetrating through the bottom of the tower body outer shell (92) and an upper sealing cylinder (12) communicated and arranged above the lower transmission pipe (11). Three guiding slide rails (13) are circumferentially and evenly arranged on the inner wall of the upper sealing cylinder (12). An upper air outlet hole (14) and a lower air outlet hole (15) are respectively arranged on each guiding slide rail (13). A valve rod perforation (16) is arranged at the lower end of the lower transmission pipe (11). A hollow disc body (17) is further arranged at the lower end of the lower transmission pipe (11). A side cut (18) is formed by cutting one side of the hollow disc body (17); There are three gas sweeping swing arms (2). The outer edge of the gas sweeping swing arm (2) is closely attached to the inner wall of the tower body outer shell (92). The gas sweeping swing arm (2) comprises a horizontal connecting pipe (21) communicated with the upper air outlet hole (14), a vertical spray pipe (22) communicated and arranged above the far end of the horizontal connecting pipe (21), an inclined connecting pipe (23) communicated with the lower air outlet hole (15), and an inclined spray pipe (24) communicated and arranged at the far end of the inclined connecting pipe (23). The side close to the inner wall of the tower body outer shell (92) of the vertical spray pipe (22) and the inclined spray pipe (24) is densely provided with cleaning air holes. The lower end of the vertical spray pipe (22) is fixedly connected to the upper end of the inclined spray pipe (24) but not communicated with each other; The adjustment assembly (3) comprises a lifting valve rod (31), a partition air valve (32), and a synchronous thread ring (33); The lifting valve rod (31) is slidably arranged in the central shaft assembly (1). The lifting valve rod (31) comprises a cylindrical rod body (311) penetrating through the valve rod perforation (16) and the hollow disc body (17), and three gas valve slots (312) circumferentially and evenly arranged on the upper half of the outer wall of the cylindrical rod body (311). A through hole (313) is respectively arranged at the lower end of each gas valve slot (312). A limit ring groove (314) is respectively arranged on each through hole (313). A rod body thread (315) is arranged at the lower end of the outer wall of the cylindrical rod body (311); Three partition air valves (32) are provided. The partition air valve (32) includes an air valve housing (321) in the shape of a hollow arc. The lower end of the air valve housing (321) is open and the upper end is closed. The partition air valve (32) further includes a guiding groove (322) formed on the outer arc surface of the air valve housing (321) and slidably engaged with the guiding slide rail (13), an adjusting air hole (323) provided on the guiding groove (322), and an internal thread sleeve (324) provided on the inner arc surface of the air valve housing (321) and plugged and engaged with the air valve slot (312). The synchronous thread ring (33) is rotatably provided in the hollow disc body (17) and screwed with the rod thread (315). The side surface of the synchronous thread ring (33) is exposed from the side cut (18).

2. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 1, wherein: The adjusting assembly (3) further includes three individual adjusters (34). The individual adjuster (34) includes an adjusting core column (341) rotatably provided in the through longitudinal hole (313), a limiting convex ring (342) formed on the outer wall of the adjusting core column (341) and rotatably engaged with the limiting ring groove (314), and an adjusting thread (343) provided on the outer wall edge of the adjusting core column (341) and meshed with the internal thread sleeve (324).

3. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 2, wherein: Both the upper air outlet (14) and the lower air outlet (15) are rectangular holes with a height greater than the width.

4. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 3, wherein: The air sweeping swing arm (2) further includes an upper transition pipe (25) connecting the horizontal connecting pipe (21) and the upper air outlet (14), and a lower transition pipe (26) connecting the inclined connecting pipe (23) and the lower air outlet (15).

5. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 4, wherein: The air sweeping swing arm (2) further includes a sliding roller (27) provided above the longitudinal spray pipe (22) for abutting against the inner wall of the tower body shell (92).

6. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 5, wherein: Axial air grooves (316) are circumferentially and evenly distributed on the outer wall of the cylindrical rod body (311) and are staggeredly distributed with the through longitudinal hole (313).

7. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 6, wherein: The air valve slot (312) is a groove body with a wider inner cross-section and a narrower outer cross-section.

8. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 7, wherein: The outer arc surfaces of the three air valve housings (321) form a complete circumference.

9. The polyaluminum drying equipment for phosphorus oxychloride production according to claim 8, wherein: The air sweeping assembly (8) further includes a rotating air transmission assembly (4) provided at the lower end of the tower body shell (92). The rotating air transmission assembly (4) includes a tower body assembly (41) and a central shaft assembly (42). The tower body assembly (41) includes a cylindrical foundation (411) provided at the lower end of the tower body housing (92). The inner wall of the cylindrical foundation (411) is successively provided with a transmission circular cavity (412), a bearing circular cavity (413), and a ventilation circular cavity (414) from top to bottom. A transmission side port (415) is further provided on the side wall of the transmission circular cavity (412), and an intake pipeline (416) is further provided on the side wall of the ventilation circular cavity (414). The central axis assembly (42) includes a driven pulley (421) provided on the outer wall of the lower transmission pipe (11) and located within the transmission circular cavity (412), a bearing assembly (422) provided on the outer wall of the lower transmission pipe (11) and located within the bearing circular cavity (413), and a rotating air disc (423) provided on the outer wall of the lower transmission pipe (11) and located within the ventilation circular cavity (414). Air disc side holes (424) are circumferentially and evenly distributed on the rotating air disc (423). The driven pulley (421) is connected to a synchronous belt arranged through the transmission side port (415), and the synchronous belt is drivingly connected to a power device.

Images