External-pollution-preventing energy-saving rectifying tower for producing electronic-grade hydrofluoric acid

Abstract

The utility model discloses an energy-saving rectifying tower for producing electronic grade hydrofluoric acid and capable of preventing external pollution, and particularly relates to the technical field of rectifying towers, the energy-saving rectifying tower comprises a tower drum, a tower plate and air holes, the top end of the tower drum is provided with a leakage-proof discharging assembly and a discharging pipe, the top end of the discharging pipe is provided with an external pipe, and the external pipe is provided with an air inlet and an air outlet. And a sealing cover is arranged on the outer side of the discharging pipe, a purifying box is installed on one side of the sealing cover, and an activated carbon filter plate is installed on one side in the purifying box. The sealing cover and the purifying box are arranged, the sealing cover covers the outer side of the discharging pipe, the side end of the sealing cover is communicated with the purifying box, the draught fan in the purifying box is started, gas in the sealing cover can be assisted to enter the purifying box, if materials leak, the activated carbon filter plate can be used for assisting purification treatment, and then the materials are discharged after treatment; and the leakage pollution prevention of the rectifying tower in use is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to an energy-saving distillation tower for producing electronic-grade hydrofluoric acid and preventing external pollution. Background Art

[0002] At present, the commonly used purification technologies for preparing electronic-grade hydrofluoric acid at home and abroad include rectification, distillation, sub-boiling distillation, vacuum distillation, gas absorption and other technologies. These purification technologies have their own characteristics and strengths. For example, sub-boiling distillation technology can only be used to prepare small quantities of products, and gas absorption technology can be used for large-scale production. This device is an energy-saving distillation tower for the production of electronic-grade hydrofluoric acid;

[0003] When the distillation tower is in use, the distilled product is discharged through the discharge pipe at the top and processed in the next step. If leakage occurs at the connection, it is easy to pollute the surrounding environment;

[0004] Therefore, an energy-saving distillation tower for producing electronic-grade hydrofluoric acid that is resistant to external pollution is needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an energy-saving distillation tower for producing electronic-grade hydrofluoric acid which is resistant to external pollution, so as to solve the problem in the background technology that leakage at the discharge point of the distillation tower is likely to pollute the surrounding environment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving distillation tower for the production of electronic-grade hydrofluoric acid that is resistant to external pollution, comprising a tower barrel, a tower plate and an air hole, a leak-proof discharge assembly is provided at the top of the tower barrel, a discharge pipe is installed at the top of the tower barrel, an external pipe is installed at the top of the discharge pipe, a sealing cover is provided on the outside of the discharge pipe, a purification box is installed on one side of the sealing cover, an activated carbon filter plate is installed on one side of the interior of the purification box, a fan is installed inside the purification box, and an isolation net is installed on the other side of the interior of the purification box.

[0007] Furthermore, a positioning platform is installed at the center position of the bottom end of the tower, a rotating shaft is movably installed at the top of the positioning platform, a first bevel gear is installed at the top of the rotating shaft, a second bevel gear is arranged on one side of the first bevel gear, an extension rod is installed on one side of the second bevel gear, and a motor is installed on one side of the extension rod.

[0008] Preferably, the first bevel gear and the second bevel gear are vertically distributed, and the first bevel gear and the second bevel gear are meshed.

[0009] Preferably, a mounting ring is provided on the outer side of the rotating shaft, a fixing bolt is provided on one side of the mounting ring, a scraper is installed on the other side of the mounting ring, and a cleaning brush is installed on the bottom end of the scraper.

[0010] Furthermore, a tower plate is installed inside the tower tube, and air holes are arranged on the surface of the tower plate.

[0011] Preferably, a plurality of the tower plates are installed inside the tower, and the plurality of the tower plates are distributed in parallel.

[0012] Furthermore, a feed pipe is installed on one side of the tower, a sewage pipe is installed at the bottom end of one side of the tower, and an air intake pipe is installed at the bottom end of the other side of the tower.

[0013] Furthermore, a support platform is installed inside the tower, an adjustment plate is provided at the top of the support platform, a through hole is provided on the surface of the adjustment plate, a slide groove is provided at the center position of the surface of the adjustment plate, and an electric push rod is installed on one side of the adjustment plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by providing a sealing cover and a purification box, the sealing cover is covered on the outside of the discharge pipe, and the side end is connected to the purification box, and the fan inside the purification box is started to assist the gas inside the sealing cover to enter the purification box. If there is material leakage, it can be purified with the help of an activated carbon filter plate, and then discharged after treatment, thereby achieving the anti-leakage and pollution performance of the distillation tower when in use;

[0015] By providing a cleaning brush, the bottom side of the cleaning brush contacts the surface of the tower plate, and when the motor is started, the first bevel gear and the second bevel gear cooperate to drive the rotating shaft to rotate, and the cleaning brush installed on the outer side of the rotating shaft can rotate together with it. With the help of the rotating cleaning brush, the pores on the surface of the tower plate can be assisted to clean, thereby achieving the cleanliness of the tower plate of the distillation tower;

[0016] An adjustment plate is provided, which is located between the tower plate and the support platform. The positions of the surface through holes and the air holes on the tower plate surface correspond one to one. By starting the electric push rod, the adjustment plate can be driven to move. As the adjustment plate moves, the positions of the through holes and the air holes are staggered, thereby reducing the size of the holes when steam passes through in the later stage, thereby realizing the adjustability of the size of the air holes on the tower plate surface of the distillation tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the front cross-sectional structure of the cleaning brush of the utility model;

[0021] Figure 5 This is a schematic diagram of the front cross-sectional structure of the adjustment plate of the utility model;

[0022] Figure 6 It is a schematic diagram of the front cross-sectional structure of the sealing cover and the purification box of the utility model.

[0023] In the figure: 1. tower; 2. positioning platform; 3. rotating shaft; 4. first bevel gear; 5. second bevel gear; 6. extension rod; 7. motor; 8. mounting ring; 9. fixing bolt; 10. scraper; 11. cleaning brush; 12. tower plate; 13. air hole; 14. feed pipe; 15. drain pipe; 16. air inlet pipe; 17. support platform; 18. adjustment plate; 19. through hole; 20. slide; 21. electric push rod; 22. discharge pipe; 23. external pipe; 24. sealing cover; 25. purification box; 26. activated carbon filter plate; 27. fan; 28. isolation net. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6 , the utility model provides an embodiment: an energy-saving distillation tower for electronic-grade hydrofluoric acid production that prevents external pollution, comprising a tower 1, a tower plate 12 and an air hole 13, a positioning platform 2 is installed at the center position of the bottom end of the tower 1, a rotating shaft 3 is movably installed on the top of the positioning platform 2, a first bevel gear 4 is installed on the top of the rotating shaft 3, a second bevel gear 5 is arranged on one side of the first bevel gear 4, the first bevel gear 4 and the second bevel gear 5 are vertically distributed, the first bevel gear 4 and the second bevel gear 5 are meshed, an extension rod 6 is installed on one side of the second bevel gear 5, a motor 7 is installed on one side of the extension rod 6, a mounting ring 8 is arranged on the outside of the rotating shaft 3, a fixing bolt 9 is arranged on one side of the mounting ring 8, a scraper 10 is installed on the other side of the mounting ring 8, a cleaning brush 11 is installed on the bottom end of the scraper 10, a tower plate 12 is installed inside the tower 1, a plurality of tower plates 12 are installed inside the tower 1, a plurality of tower plates 12 are distributed in parallel, and an air hole 13 is arranged on the surface of the tower plate 12;

[0026] Specifically, Figure 1 and Figure 4As shown, when in use, the mounting ring 8 is mounted on the rotating shaft 3 with the assistance of the fixing bolt 9, and the bottom side of the cleaning brush 11 at the side end contacts the surface of the tower plate 12. When the motor 7 is started, the first bevel gear 4 cooperates with the second bevel gear 5 to drive the rotating shaft 3 to rotate, and the cleaning brush 11 rotates together with it, and the tower plate 12 and the air holes 13 on the surface can be cleaned with the help of the cleaning brush 11;

[0027] A feed pipe 14 is installed on one side of the tower 1, a sewage pipe 15 is installed at the bottom end of one side of the tower 1, an air intake pipe 16 is installed at the bottom end of the other side of the tower 1, a support platform 17 is installed inside the tower 1, an adjustment plate 18 is arranged on the top of the support platform 17, a through hole 19 is arranged on the surface of the adjustment plate 18, a slide groove 20 is arranged at the center position of the surface of the adjustment plate 18, and an electric push rod 21 is installed on one side of the adjustment plate 18;

[0028] Specifically, Figure 1 and Figure 5 As shown, when in use, the adjustment plate 18 is located at the bottom side of the tower plate 12, and the through holes 19 on the surface correspond to the positions of the air holes 13 for steam to pass through. The electric push rod 21 is started to drive the adjustment plate 18 to move, and the adjustment plate 18 and the air holes 13 are staggered to change the size of the holes for steam to pass through;

[0029] The top of the tower 1 is provided with a leak-proof discharge assembly, a discharge pipe 22 is installed at the top of the tower 1, an external pipe 23 is installed at the top of the discharge pipe 22, a sealing cover 24 is installed on the outside of the discharge pipe 22, a purification box 25 is installed on one side of the sealing cover 24, an activated carbon filter plate 26 is installed on one side of the purification box 25, a fan 27 is installed inside the purification box 25, and an isolation net 28 is installed on the other side of the purification box 25;

[0030] Specifically, Figure 1 , Figure 3 and Figure 6 As shown, when in use, the fan 27 inside the purification box 25 is started to assist the air inside the sealing cover 24 to enter. If there is material leakage, after entering the purification box 25, the activated carbon filter plate 26 inside the purification box 25 can assist in purification.

[0031] Working principle: When in use, steam enters the tower 1 through the air inlet pipe 16, and the material is fed into the tower 1 through the feed pipe 14. The steam moves upward through the through hole 19 and the air hole 13, and the material moves downward in the opposite direction. If the electric push rod 21 is started, the adjustment plate 18 at the bottom of the air hole 13 can be driven to move. The through hole 19 and the air hole 13 are staggered to change the size of the hole to avoid the hole being too large in the initial state and the steam being insufficient, so that too much material falls into the bottom side of the tower 1. The material after distillation moves upward and is discharged through the discharge pipe 22 and the external pipe 23. If any material leaks through the connection, the fan 27 in the purification box 25 can assist the air and material inside the sealing cover 24 to enter the purification box 25, and the activated carbon filter plate 26 inside the purification box 25 can assist in purification. Periodically, the operator can start the motor 7, the first bevel gear 4 cooperates with the second bevel gear 5, the shaft 3 rotates, the outer mounting ring 8 can drive the cleaning brush 11 to rotate, the bottom side of the cleaning brush 11 contacts the surface of the tower plate 12, and the rotating cleaning brush 11 can clean the tower plate 12 and the pores 13 on the surface.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An energy-saving distillation tower for producing electronic-grade hydrofluoric acid and preventing external pollution, comprising a tower barrel (1), a tower plate (12) and air holes (13), characterized in that: The top of the tower (1) is provided with a leak-proof discharge assembly; A discharge pipe (22) is installed at the top of the tower (1), an external pipe (23) is installed at the top of the discharge pipe (22), a sealing cover (24) is arranged on the outside of the discharge pipe (22), a purification box (25) is installed on one side of the sealing cover (24), an activated carbon filter plate (26) is installed on one side of the purification box (25), a fan (27) is installed inside the purification box (25), and an isolation net (28) is installed on the other side of the purification box (25).

2. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 1, characterized in that: A positioning platform (2) is installed at the center position of the bottom end of the tower (1), a rotating shaft (3) is movably installed at the top of the positioning platform (2), a first bevel gear (4) is installed at the top of the rotating shaft (3), a second bevel gear (5) is arranged on one side of the first bevel gear (4), an extension rod (6) is installed on one side of the second bevel gear (5), and a motor (7) is installed on one side of the extension rod (6).

3. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with an anti-external pollution feature according to claim 2, wherein: The first bevel gear (4) and the second bevel gear (5) are vertically distributed, and the first bevel gear (4) and the second bevel gear (5) are meshed.

4. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 2, characterized in that: A mounting ring (8) is arranged on the outer side of the rotating shaft (3), a fixing bolt (9) is arranged on one side of the mounting ring (8), a scraper (10) is arranged on the other side of the mounting ring (8), and a cleaning brush (11) is arranged at the bottom end of the scraper (10).

5. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 1, characterized in that: A tower plate (12) is installed inside the tower cylinder (1), and air holes (13) are arranged on the surface of the tower plate (12).

6. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 5, characterized in that: A plurality of the tower plates (12) are installed inside the tower barrel (1), and the plurality of the tower plates (12) are distributed in parallel.

7. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 1, characterized in that: A feed pipe (14) is installed on one side of the tower (1), a sewage pipe (15) is installed at the bottom end of one side of the tower (1), and an air intake pipe (16) is installed at the bottom end of the other side of the tower (1).

8. The energy-saving distillation tower for producing electronic-grade hydrofluoric acid with external pollution prevention according to claim 1, characterized in that: A support platform (17) is installed inside the tower (1), an adjustment plate (18) is arranged at the top of the support platform (17), a through hole (19) is arranged on the surface of the adjustment plate (18), a slide groove (20) is arranged at the center position of the surface of the adjustment plate (18), and an electric push rod (21) is installed on one side of the adjustment plate (18).

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