High-low pressure dual-purpose rectifying tower plate structure

Abstract

The invention relates to a high-low pressure dual-purpose rectifying tower plate structure, and relates to the technical field of rectifying towers, the high-low pressure dual-purpose rectifying tower plate structure comprises a liquid receiving plate, an overflow assembly, a hole changing assembly and a driving assembly, the overflow assembly comprises an overflow part, a power cylinder and an adjusting part, and the overflow part comprises a first overflow plate, a second overflow plate, a first adjusting plate and a second adjusting plate; the adjusting part comprises a power block, a first sliding rod, a first adjusting rod, a second sliding rod, a second adjusting rod and an adjusting connecting rod, the hole changing assembly comprises a low-pressure hole plate and a high-pressure hole plate, the driving assembly comprises a power ring, a low-pressure driving part, a high-pressure driving part and a transmission part, and the low-pressure driving part comprises a push plate, a driving rod, an overturning rack and an overturning gear. The high-pressure driving part comprises a push block, a driving shaft and an overturning block, the transmission part comprises a connecting rod, a push rod, a transmission rack and a transmission gear ring, and the tower plate can switch a rectification mode by adjusting the diameters of an overflow structure and a gas phase opening. The tower plate has the effect that the tower plate can be switched between the high-pressure rectification mode and the low-pressure rectification mode.

Description

Technical Field

[0001] This application relates to the technical field of distillation columns, and in particular to a distillation column tray structure suitable for both high and low pressure applications. Background Technology

[0002] A distillation column is a distillation device that can transfer light components from the liquid phase to the gas phase. It is a widely used mass and heat transfer device. In order to distill azeotropes or near-boiling point mixtures, special distillation methods such as partial pressure distillation are usually used.

[0003] Partial pressure distillation uses a series of high-pressure and low-pressure distillation columns to distill a mixture sequentially. Due to the difference in gas density and flow rate, high-pressure distillation columns typically use valve trays with small pore sizes and high overflow heights. Low-pressure distillation columns typically use sieve trays with large pore sizes and low overflow heights. Because of the significant structural differences between valve trays and sieve trays, it is difficult for a single distillation column to perform both high-pressure and low-pressure distillation in order to reduce the cost of the distillation column.

[0004] Existing solutions typically involve setting the trays to be detachable, allowing a single column to perform both high-pressure and low-pressure distillation by replacing the trays. While this achieves dual functionality, it is time-consuming and labor-intensive, hindering the rapid commencement of distillation operations. Therefore, there is an urgent need for a tray structure that can switch between high-pressure and low-pressure distillation modes. Summary of the Invention

[0005] In order to enable the tray to switch between high-pressure distillation mode and low-pressure distillation mode, so as to realize the dual use of one column, this application provides a high- and low-pressure dual-purpose distillation tray structure.

[0006] This application provides a dual-purpose (high and low pressure) distillation tray structure, which adopts the following technical solution: A high- and low-pressure dual-purpose distillation column tray structure includes a liquid receiving plate, an overflow assembly, a changing hole assembly, and a driving assembly. The liquid receiving plate is connected to the inner wall of the column body, and a rectangular downcomer is left between one side of the liquid receiving plate and the inner wall of the column body. The overflow assembly includes an overflow section, a power cylinder, and an adjustment section. The overflow section includes a first overflow plate, a second overflow plate, a first adjustment plate, and a second adjustment plate. Both the first overflow plate and the second overflow plate are located at the liquid discharge port. The first overflow plate is connected to the liquid receiving plate, and the second overflow plate is located on the side of the first overflow plate away from the liquid receiving plate. An overflow channel is formed between the second overflow plate and the inner wall of the tower body. The power cylinder is connected to the tower body, and the movable end of the power cylinder is connected to the second overflow plate. The first adjusting plate is located between the first overflow plate and the second overflow plate. The first adjusting plate is slidably mounted on the first overflow plate. The second adjusting plate is hinged to the first adjusting plate. The adjusting part is connected to the second overflow plate, the first adjusting plate and the second adjusting plate respectively. The adjusting part is used to drive the first adjusting plate and the second adjusting plate to move when the second overflow plate moves. During the process of the second overflow plate coming into contact with the first adjusting plate, the adjusting part causes the first adjusting plate to slide down and the second adjusting plate to swing up. During the process of the second overflow plate moving away from the first overflow plate, the adjusting part causes the first adjusting plate to slide down and the second adjusting plate to swing down and rest on the second overflow plate. The liquid receiving plate has multiple conversion holes, and multiple sets of conversion hole assemblies are provided, which are correspondingly set at the conversion holes. The conversion hole assembly includes a low-pressure orifice plate and a high-pressure orifice plate. Multiple low-pressure orifice plates are arranged around the central axis of the conversion hole. One side of the low-pressure orifice plate is hinged to the top surface of the liquid receiving plate, and the other side is provided with a hole-forming notch. When all the low-pressure orifice plates are flipped to the conversion hole, all the low-pressure orifice plates together close the conversion hole, and all the hole-forming notches together form a low-pressure gas phase port. Multiple high-pressure orifice plates are arranged around the central axis of the conversion hole. One side of the high-pressure orifice plate is hinged to the bottom surface of the liquid receiving plate. Each high-pressure orifice plate is equipped with a high-pressure gas pipe, and a float valve is slidably installed on the high-pressure gas pipe. The high-pressure gas pipe forms a high-pressure gas phase port. When all the high-pressure orifice plates are flipped to the conversion hole, all the high-pressure orifice plates together close the conversion hole. The drive assembly is mounted on the liquid receiving plate. The drive assembly is used to drive the high pressure orifice plate and low pressure orifice plate of all orifice changing assemblies to rotate synchronously with the power of the power cylinder. When the low pressure orifice plate rotates to the conversion hole, the high pressure orifice plate rotates away from the conversion hole.

[0007] Optionally, the adjustment unit includes a power block, a first slide rod, and a first adjusting rod. The power block is connected to the second overflow plate and slides through the first overflow plate. A power groove is provided on the power block. The first slide rod is slidably disposed in a lifting groove inclinedly opened on the groove wall of the power groove. The first slide rod is connected to one end of the first adjusting rod, and the other end of the first adjusting rod is connected to the first adjusting plate. When the second overflow plate approaches the first overflow plate, the groove wall of the lifting groove pushes the first adjusting plate to slide upward.

[0008] Optionally, the adjustment unit further includes a second slide rod, a second adjusting rod, and an adjusting connecting rod. The second slide rod is slidably disposed in a tilting slide groove inclinedly opened on the wall of the power groove. The tilting slide groove is located below the lifting slide groove, and the tilt angle of the tilting slide groove is less than the tilt angle of the lifting slide groove. One end of the second slide rod is connected to one end of the second adjusting rod. The second adjusting rod slides through the first adjusting rod and the first adjusting plate, and extends out of the first adjusting plate. One end of the adjusting connecting rod is hinged to the second adjusting rod, and the other end is hinged to the second adjusting plate. When the second overflow plate approaches the first overflow plate, the wall of the tilting slide groove drives the second adjusting plate to swing up.

[0009] Optionally, the drive assembly includes a power ring, a low-pressure drive unit, and a high-pressure drive unit. Multiple power rings are provided, each corresponding to a conversion hole. The power rings are rotatably mounted in a drive groove on the bottom surface of the receiving plate and are coaxial with the conversion hole. Multiple low-pressure drive units are provided, each corresponding to a low-pressure orifice plate. The low-pressure drive units are connected to the power rings and are used to drive the low-pressure orifice plates to rotate when the power rings rotate. Multiple high-pressure drive units are provided, each corresponding to a high-pressure orifice plate. The high-pressure drive units are connected to the power rings and are used to drive the high-pressure orifice plates to rotate when the power rings rotate.

[0010] Optionally, the low-pressure orifice plate is connected to a first hinge shaft, which is rotatably connected to the liquid receiving plate. The low-pressure drive unit includes a push plate, a drive rod, a rotating rack, and a rotating gear. The push plate is slidably disposed in a low-pressure groove opened on the drive groove wall. The push plate is connected to the inner wall of the power ring and has a pushing inclined surface. One end of the drive rod is connected to a drive head, which is slidably disposed in a pushing groove opened on the pushing inclined surface. The other end of the drive rod is connected to the rotating rack, which is slidably disposed in a clearance groove opened on the top surface of the liquid receiving plate. The rotating rack meshes with the rotating gear, which is connected to the first hinge shaft.

[0011] Optionally, the high-pressure orifice plate is connected to a second hinge shaft, which is rotatably connected to the liquid receiving plate. The high-pressure drive unit includes a push block, a drive shaft, and a tilting block. There are two push blocks, which are located at both ends of the axis of the second hinge shaft and are connected to the inner wall of the power ring. There are two drive shafts, which correspond one-to-one with the push blocks. The drive shafts are inserted into the tilting holes opened at the ends of the second hinge shafts and are connected to the cylindrical sleeve pairs of the second hinge shafts. A support block is slidably sleeved on the drive shaft and is connected to the bottom surface of the liquid receiving plate. There are two tilting blocks, which correspond one-to-one with the drive shafts and are connected to the drive shafts. They are slidably disposed in the tilting spiral grooves opened on the wall of the tilting holes. The tilting spiral grooves at both ends of the second hinge shaft have the same rotation direction. The push block is used to push the drive shaft into the tilting hole.

[0012] Optionally, a sliding block is connected to the support block, and the sliding block is slidably disposed in a sliding groove opened on the drive shaft.

[0013] Optionally, the drive assembly further includes a transmission unit that drives the power block and all the power rings, and the transmission unit is used to drive all the power rings to rotate by means of the driving force generated by the sliding of the power block.

[0014] Optionally, the conversion holes are arranged in a matrix. The transmission part includes a connecting rod, a push rod, a transmission rack, and a transmission gear ring. The connecting rod is connected to the power block. Multiple push rods and transmission racks are provided, and they correspond one-to-one. The push rod is connected to the connecting rod and the transmission rack respectively. Multiple transmission racks correspond one-to-one with multiple rows of conversion holes along the sliding direction of the power block. Multiple transmission gear rings are provided, and they are fitted onto the power ring one-to-one. Each transmission rack meshes with all the transmission gear rings in its corresponding row.

[0015] Optionally, a sealing strip is provided between the sides of two adjacent low-pressure orifice plates that are close to each other, and between the sides of two adjacent high-pressure orifice plates that are close to each other.

[0016] In summary, this application includes at least one of the following beneficial technical effects: This application discloses a dual-purpose high- and low-pressure distillation tray structure, comprising a receiving plate, an overflow assembly, a perforation switching assembly, and a driving assembly. By driving a second overflow plate closer to or further away from a first overflow plate, the size of the overflow channel can be adjusted to suit either high-pressure or low-pressure distillation. A power block drives a first adjusting rod and a second adjusting rod to slide. Due to the different sliding distances of the first and second adjusting rods, the first adjusting rod drives a first adjusting plate to slide, and the second adjusting rod drives a second adjusting plate to swing, thereby adjusting the overflow height to suit either high-pressure or low-pressure distillation. The power block drives all power rings to rotate, and each power ring drives its corresponding high-pressure and low-pressure perforated plates to flip, thereby adjusting the diameter of the gas inlet to suit either high-pressure or low-pressure distillation. Thus, the tray structure of this application can switch between high-pressure and low-pressure distillation modes, facilitating dual-purpose distillation. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a structural schematic diagram of the high-pressure orifice plate and the transmission unit; Figure 3 This is a schematic diagram of the overflow component; Figure 4 This is a structural schematic diagram of the low-voltage drive unit; Figure 5 This is a structural schematic diagram of the high-voltage drive unit; Figure 6This is a structural diagram showing the assembly relationship between the drive shaft, the flipping block, the flipping hole, and the flipping spiral groove. Figure 7 It is a structural diagram of the push plate, the pushing inclined plane, the pushing slide and the drive head.

[0018] Explanation of reference numerals in the attached figures: 1. Tower body; 2. Receiving plate; 21. Downcomer; 22. Conversion hole; 23. Drive groove; 24. Low-pressure chute; 25. Clearance groove; 3. Overflow assembly; 31. Overflow section; 311. First overflow plate; 312. Second overflow plate; 313. First adjusting plate; 314. Second adjusting plate; 32. Power cylinder; 33. Adjusting section; 331. Power block; 3311. Power groove; 3312. Lifting chute; 3313. Tilting chute; 332. First sliding rod; 333. First adjusting rod; 334. Second sliding rod; 335. Second adjusting rod; 336. Adjusting connecting rod; 4. Hole changing assembly; 41. Low-pressure orifice plate; 411. Hole forming notch; 412. First hinge shaft; 42. High pressure 421. Orifice plate; 422. High-pressure air pipe; 423. Float valve; 423. Second hinge shaft; 4231. Flip hole; 4232. Flip spiral groove; 43. Sealing strip; 5. Drive assembly; 51. Power ring; 52. Low-pressure drive unit; 521. Push plate; 5211. Pushing inclined surface; 5212. Pushing slide; 522. Drive rod; 5221. Drive head; 523. Flip rack; 524. Flip gear; 53. High-pressure drive unit; 531. Push block; 532. Drive shaft; 5321. Support block; 5322. Sliding block; 5323. Sliding groove; 533. Flip block; 54. Transmission unit; 541. Connecting rod; 542. Push rod; 543. Transmission rack; 544. Transmission gear ring. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0020] This application discloses a dual-purpose high- and low-pressure distillation tray structure. (Refer to...) Figure 1 and Figure 2 A high- and low-pressure dual-purpose distillation tray structure is installed on the inner wall of the column body 1, and includes a liquid receiving plate 2, an overflow assembly 3, a changing hole assembly 4, and a driving assembly 5.

[0021] Reference Figure 1 The liquid receiving plate 2 is fixed to the inner wall of the tower body 1. A rectangular liquid discharge port 21 is left between one side of the liquid receiving plate 2 and the inner wall of the tower body 1, which provides space for the overflow of liquid phase.

[0022] Reference Figure 1 and Figure 2The overflow assembly 3 includes an overflow section 31, a power cylinder 32, and an adjustment section 33. The overflow section 31 includes a first overflow plate 311, a second overflow plate 312, a first adjustment plate 313, and a second adjustment plate 314.

[0023] Reference Figure 1 Both the first overflow plate 311 and the second overflow plate 312 are located at the downcomer 21 and are vertically arranged. One side of the first overflow plate 311 is fixed to the receiving plate 2. The second overflow plate 312 is located on the side of the first overflow plate 311 away from the receiving plate 2, and an overflow channel is formed between the second overflow plate 312 and the inner wall of the tower body 1 for liquid phase overflow. A power cylinder 32 is fixed to the outer wall of the tower body 1, and the movable end of the power cylinder 32 slides into the tower body 1 and is fixed to the second overflow plate 312. The power cylinder 32 is used to drive the second overflow plate 312 to move closer to or away from the first overflow plate 311. The power cylinder 32 can be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0024] Reference Figure 3 The first adjusting plate 313 is vertically arranged and located between the first overflow plate 311 and the second overflow plate 312. The first adjusting plate 313 is slidably mounted on the first overflow plate 311 in a vertical direction. The second adjusting plate 314 is hinged to the top of the first adjusting plate 313. The adjusting part 33 is connected to the second overflow plate 312, the first adjusting plate 313, and the second adjusting plate 314 respectively. The adjusting part 33 is used to drive the first adjusting plate 313 and the second adjusting plate 314 to move when the second overflow plate 312 moves.

[0025] During the process of the second overflow plate 312 abutting against the first adjusting plate 313, the adjusting part 33 causes the first adjusting plate 313 to slide upward and the second adjusting plate 314 to swing upward. In this application, the second adjusting plate 314 can swing upward to a position coplanar with the first adjusting plate 313. The first adjusting plate 313 and the second adjusting plate 314 can increase the overflow height to meet the overflow weir height requirements of high-pressure distillation. During the process of the second overflow plate 312 moving away from the first overflow plate 311, the adjusting part 33 causes the first adjusting plate 313 to slide downward and the second adjusting plate 314 to swing downward and rest on the second overflow plate 312. The second adjusting plate 314 can close the space between the first overflow plate 311 and the second overflow plate 312. The first adjusting plate 313 and the second adjusting plate 314 can reduce the overflow height to meet the overflow weir height requirements of low-pressure distillation.

[0026] Reference Figure 1 and Figure 2 The receiving plate 2 has multiple conversion holes 22, and the conversion hole assembly 4 has multiple sets, which are correspondingly set at the conversion holes 22. The conversion hole assembly 4 includes a low-pressure orifice plate 41 and a high-pressure orifice plate 42.

[0027] Three low-pressure orifice plates 41 are arranged around the central axis of the conversion hole 22. One side of the low-pressure orifice plate 41 is hinged to the top surface of the liquid receiving plate 2, and the other side is provided with a hole-forming notch 411. When all the low-pressure orifice plates 41 are flipped to the conversion hole 22, all the low-pressure orifice plates 41 together close the conversion hole 22, and all the hole-forming notches 411 together form a low-pressure gas phase port, which is used to flow low-pressure gas phase.

[0028] Reference Figure 2 Three high-pressure orifice plates 42 are arranged around the central axis of the conversion hole 22. One side of the high-pressure orifice plate 42 is hinged to the bottom surface of the liquid receiving plate 2. Each high-pressure orifice plate 42 is fixedly provided with a high-pressure gas pipe 421. A float valve 422 is slidably arranged on the high-pressure gas pipe 421. The high-pressure gas pipe 421 forms a high-pressure gas phase port, which is used to flow high-pressure gas phase. The diameter of the high-pressure gas phase port is less than half the diameter of the low-pressure gas phase port. When all the high-pressure orifice plates 42 are flipped to the conversion hole 22, all the high-pressure orifice plates 42 together close the conversion hole 22.

[0029] Reference Figure 1 and Figure 2 The drive assembly 5 is mounted on the liquid receiving plate 2. The drive assembly 5 is used to drive the high pressure orifice plate 42 and the low pressure orifice plate 41 of all the orifice changing assemblies 4 to rotate synchronously with the power of the power cylinder 32. When the low pressure orifice plate 41 rotates to the conversion hole 22, the high pressure orifice plate 42 rotates away from the conversion hole 22 and is in a vertical state. When the high pressure orifice plate 42 rotates to the conversion hole 22, the low pressure orifice plate 41 rotates away from the conversion hole 22 and is attached to the top surface of the liquid receiving plate 2.

[0030] In use, when high-pressure distillation is required, the power cylinder 32 drives the second overflow plate 312 to approach the first overflow plate 311 and abut against the first adjusting plate 313. The adjusting part 33 drives the first adjusting plate 313 to slide upward and drives the second adjusting plate 314 to swing upward until the second adjusting plate 314 is coplanar with the first adjusting plate 313. The first adjusting plate 313 and the second adjusting plate 314 increase the overflow height, and the second overflow plate 312 widens the overflow channel, meeting the requirements of high-pressure distillation for the overflow weir height. The drive assembly 5 is driven by the power cylinder. The power of 32 can drive the high-pressure orifice plate 42 and the low-pressure orifice plate 41 to rotate synchronously, so that the high-pressure orifice plate 42 rotates to the conversion hole 22, and the low-pressure orifice plate 41 rotates and adheres to the top surface of the liquid receiving plate 2. The high-pressure orifice plate 42 closes the conversion hole 22. The high-pressure gas pipe 421, together with the float valve 422, serves as a high-pressure gas phase inlet to supply high-pressure gas phase flow, reducing the diameter of the gas phase inlet and meeting the requirements of high-pressure distillation for the diameter of the gas phase inlet. Thus, after the overflow component 3 and the orifice changing component 4 have completed the adjustment, the tray structure can be used for high-pressure distillation operations.

[0031] When low-pressure distillation is required, the power cylinder 32 drives the second overflow plate 312 away from the first overflow plate 311, the adjusting unit 33 drives the first adjusting plate 313 to slide down, and drives the second adjusting plate 314 to swing down until the second adjusting plate 314 abuts against the second overflow plate 312. The first adjusting plate 313 and the second adjusting plate 314 reduce the overflow height, and the second overflow plate 312 narrows the overflow channel, meeting the overflow weir height requirements of low-pressure distillation; at the same time, the drive assembly 5, with the help of the power cylinder 32 The power can drive the high-pressure orifice plate 42 and the low-pressure orifice plate 41 to rotate synchronously, so that the low-pressure orifice plate 41 rotates to the conversion hole 22, and the high-pressure orifice plate 42 rotates away from the conversion hole 22. The low-pressure orifice plate 41 closes the conversion hole 22, and all the holes 411 form low-pressure gas phase ports for low-pressure gas phase flow, increasing the diameter of the gas phase ports and meeting the requirements of low-pressure distillation for the diameter of the gas phase ports. Thus, after the overflow component 3 and the orifice changing component 4 have completed the adjustment, the tray structure can be used for low-pressure distillation operations.

[0032] Based on the above analysis, the weir height can be adjusted by the second overflow plate 312, the first regulating plate 313 and the second regulating plate 314, and the gas phase port can be adjusted by the high pressure orifice plate 42 and the low pressure orifice plate 41. Thus, the tray structure of this application can easily switch between high pressure distillation mode and low pressure distillation mode, realizing the dual use of one tower.

[0033] Reference Figure 4 and Figure 5 In order to improve the sealing performance of the low-pressure orifice plate 41 and the high-pressure orifice plate 42 on the conversion hole 22, a sealing strip 43 is fixed between the sides of two adjacent low-pressure orifice plates 41 that are close to each other and between the sides of two adjacent high-pressure orifice plates 42 that are close to each other. When the low-pressure orifice plate 41 or the high-pressure orifice plate 42 closes the conversion hole 22, the sealing strip 43 can improve the sealing effect of the low-pressure orifice plate 41 or the high-pressure orifice plate 42 to prevent liquid or gas leakage.

[0034] Specifically, refer to Figure 3 The adjustment unit 33 includes a power block 331, a first slide bar 332, and a first adjustment rod 333.

[0035] A power block 331 is fixedly connected to the second overflow plate 312 and slidably passes through the first overflow plate 311. A power groove 3311 is formed on the power block 331. A first sliding rod 332 is slidably disposed within a lifting groove 3312 inclinedly formed on the wall of the power groove 3311. The first sliding rod 332 is fixedly connected to one end of a first adjusting rod 333, and the other end of the first adjusting rod 333 is fixedly connected to a first adjusting plate 313. When the second overflow plate 312 approaches the first overflow plate 311, the groove wall of the lifting groove 3312 pushes the first adjusting plate 313 upwards. When the second overflow plate 312 moves away from the first overflow plate 311, the groove wall of the lifting groove 3312 pushes the first adjusting plate 313 downwards.

[0036] The power block 331 can move with the second overflow plate 312. Since the first adjusting rod 333 and the first sliding rod 332 slide with the first adjusting plate 313, the first adjusting rod 333 and the first sliding rod 332 are difficult to move in the sliding direction of the power block 331. Furthermore, since the lifting slide 3312 is inclined, the wall of the lifting slide 3312 can push the first adjusting rod 333 to slide via the first sliding rod 332, making it easy to adjust the height of the first adjusting plate 313.

[0037] Reference Figure 3 In order to enable the second adjustment plate 314 to swing synchronously when the first adjustment plate 313 slides, the adjustment part 33 also includes a second slide bar 334, a second adjustment rod 335 and an adjustment connecting rod 336.

[0038] The second slide rod 334 is slidably disposed within a tilting slide groove 3313 inclinedly opened on the wall of the power groove 3311. The tilting slide groove 3313 is located below the lifting slide groove 3312, and the tilt angle of the tilting slide groove 3313 is less than that of the lifting slide groove 3312. One end of the second slide rod 334 is fixedly connected to the second adjusting rod 335. The second adjusting rod 335 slides through the first adjusting rod 333 and the first adjusting plate 313, and extends out of the first adjusting plate 313. One end of the adjusting connecting rod 336 is hinged to the second adjusting rod 335, and the other end is hinged to the second adjusting plate 314. When the second overflow plate 312 approaches the first overflow plate 311, the wall of the tilting slide groove 3313 drives the second adjusting plate 314 to swing upward. When the second overflow plate 312 moves away from the first overflow plate 311, the wall of the tilting slide groove 3313 drives the second adjusting plate 314 to swing downward.

[0039] Since the second adjusting rod 335 passes through the first adjusting rod 333, the second adjusting rod 335 can move with the first adjusting rod 333. The inclined flipping slide 3313 can push the second adjusting rod 335 to slide. Since the inclination angle of the flipping slide 3313 is smaller than the inclination angle of the lifting slide 3312, the sliding distance of the second adjusting rod 335 is smaller than the sliding distance of the first adjusting rod 333. Thus, the second adjusting rod 335 can slide relative to the first adjusting rod 333. When the second adjusting rod 335 slides relative to the first adjusting rod 333, it can drive the adjusting linkage 336 to swing, thereby driving the second adjusting plate 314 to swing relative to the first adjusting plate 313. In turn, the second adjusting plate 314 can swing when the first adjusting plate 313 slides.

[0040] Specifically, refer to Figure 4 and Figure 5 The drive assembly 5 includes a power ring 51, a low-voltage drive unit 52, and a high-voltage drive unit 53.

[0041] Multiple power rings 51 are provided, each corresponding to a conversion hole 22. The power rings 51 are rotatably mounted within a drive groove 23 on the bottom surface of the receiving plate 2, and their rotation axis is coaxial with the central axis of the conversion hole 22. Multiple low-pressure drive units 52 are provided, each corresponding to a low-pressure orifice plate 41. The low-pressure drive units 52 are connected to the power rings 51 and are used to drive the low-pressure orifice plates 41 to rotate when the power rings 51 rotate. Multiple high-pressure drive units 53 are provided, each corresponding to a high-pressure orifice plate 42. The high-pressure drive units 53 are connected to the power rings 51 and are used to drive the high-pressure orifice plates 42 to rotate when the power rings 51 rotate.

[0042] By rotating the power ring 51, all the low-pressure orifice plates 41 and high-pressure orifice plates 42 at a conversion hole 22 can be driven to flip synchronously. On the one hand, the synchronous driving of the low-pressure orifice plates 41 and high-pressure orifice plates 42 is realized, and on the other hand, the three low-pressure orifice plates 41 and three high-pressure orifice plates 42 can be driven to move with one driving component.

[0043] Specifically, refer to Figure 4 The low-pressure drive unit 52 includes a push plate 521, a drive rod 522, a tilting rack 523, and a tilting gear 524.

[0044] The low-pressure orifice plate 41 is fixedly connected to a first hinge shaft 412, which is rotatably connected to the liquid receiving plate 2. The first hinge shaft 412 forms a hinge structure between the low-pressure orifice plate 41 and the liquid receiving plate 2.

[0045] Reference Figure 4 and Figure 7 The push plate 521 is slidably disposed within a low-pressure groove 24 opened on the wall of the drive groove 23. The push plate 521 is fixedly connected to the inner wall of the power ring 51, and a pushing inclined surface 5211 is provided on the push plate 521. One end of the drive rod 522 is fixedly connected to a drive head 5221, which is slidably disposed within a pushing groove 5212 opened on the pushing inclined surface 5211. The other end of the drive rod 522 is fixedly connected to a rotating rack 523. The rotating rack 523 is slidably disposed within a clearance groove 25 opened on the top surface of the liquid receiving plate 2. The clearance groove 25 communicates with the low-pressure groove 24. The rotating rack 523 meshes with a rotating gear 524, which is fixedly connected to the first hinge shaft 412.

[0046] The power ring 51 can drive the push plate 521 to slide. The push plate 521 can reciprocate to drive the drive rod 522 to move by pushing the slide groove 5212 and the drive head 5221. The drive rod 522 can drive the rotating rack 523 to slide. The rotating rack 523 can drive the rotating gear 524 to rotate. The rotating gear 524 can drive the first hinge shaft 412 to rotate, so that the power ring 51 can drive the low pressure orifice plate 41 to rotate when it rotates.

[0047] Specifically, refer to Figure 5 and Figure 6 The high-voltage drive unit 53 includes a push block 531, a drive shaft 532, and a tilting block 533.

[0048] The high-pressure orifice plate 42 is fixedly connected to a second hinge shaft 423, which is rotatably connected to the liquid receiving plate 2. The second hinge shaft 423 forms a hinge structure between the high-pressure orifice plate 42 and the liquid receiving plate 2.

[0049] Two push blocks 531 are provided, located at opposite ends of the second hinge shaft 423 along its axial direction, and fixedly connected to the inner wall of the power ring 51. Two drive shafts 532 are provided, corresponding one-to-one with the push blocks 531, located at opposite ends of the second hinge shaft 423, and inserted into the flip holes 4231 opened at the ends of the second hinge shaft 423. The drive shafts 532 are connected to the cylindrical sleeve pair of the second hinge shaft 423. A support block 5321 is slidably sleeved on the drive shaft 532, and the support block 5321 is fixedly connected to the bottom surface of the liquid receiving plate 2. Two flipping blocks 533 are provided, and they correspond one-to-one with the drive shaft 532. The flipping blocks 533 are fixedly connected to the drive shaft 532 and are slidably disposed in the flipping spiral groove 4232 opened on the wall of the flipping hole 4231. The rotation directions of the flipping spiral grooves 4232 at both ends of the second hinge shaft 423 are the same. The push block 531 is used to push the drive shaft 532 into the flipping hole 4231.

[0050] Reference Figure 6 Since the rotation directions of the flipping spiral grooves 4232 at both ends of the second hinge shaft 423 are the same, the drive shaft 532 at one end of the second hinge shaft 423 can drive the second hinge shaft 423 to rotate forward when it is pushed, and the drive shaft 532 at the other end of the second hinge shaft 423 can drive the second hinge shaft 423 to rotate in reverse when it is pushed.

[0051] The power ring 51 can drive the push block 531 to rotate. When the push block 531 rotates, it can push the drive shaft 532 to slide into the flip hole 4231. The drive shaft 532, supported by the support block 5321, can drive the flip block 533 to move along the axis of the second hinge shaft 423. Since the flip block 533 is slidably set in the flip spiral groove 4232, the linearly moving flip block 533 can drive the second hinge shaft 423 to rotate by pushing the groove wall of the flip spiral groove 4232, so that the power ring 51 can drive the high pressure orifice plate 42 to flip when it rotates.

[0052] Specifically, refer to Figure 6A sliding block 5322 is fixedly connected to the support block 5321. The sliding block 5322 is slidably disposed in the sliding groove 5323 opened on the drive shaft 532. The sliding block 5322 and the sliding groove 5323 form a sliding connection structure between the support block 5321 and the drive shaft 532, so that the drive shaft 532 is difficult to rotate relative to the support block 5321.

[0053] Reference Figure 2 In order to enable the movement of the power ring 51 to be driven by the driving force generated by the sliding of the power block 331, the drive assembly 5 also includes a transmission part 54. The transmission part 54 is connected to the power block 331 and all the power rings 51. The transmission part 54 is used to drive all the power rings 51 to rotate by the driving force generated by the sliding of the power block 331. On the one hand, there is no need for an additional drive source to drive the power rings 51, which reduces the weight of the tray and reduces the manufacturing cost. On the other hand, it can drive all the power rings 51 to move synchronously.

[0054] Specifically, refer to Figure 2 The transmission unit 54 includes a connecting rod 541, a push rod 542, a transmission rack 543, and a transmission gear ring 544.

[0055] The conversion holes 22 are arranged in a matrix. The connecting rod 541 is fixedly connected to the power block 331. Multiple push rods 542 and transmission racks 543 are provided, and they correspond one-to-one. The push rods 542 are fixedly connected to the connecting rods 541 and the transmission racks 543 respectively. Multiple transmission racks 543 correspond one-to-one with multiple rows of conversion holes 22 along the sliding direction of the power block 331. Multiple transmission gear rings 544 are provided, and they are fixedly sleeved on the power ring 51 one-to-one. Each transmission rack 543 meshes with all the transmission gear rings 544 in its corresponding row.

[0056] Since the connecting rod 541 can move with the power block 331, the power of the power cylinder 32 can be transmitted to the connecting rod 541. The connecting rod 541 can drive the push rod 542 to move, the push rod 542 can drive all the transmission racks 543 to move, the transmission racks 543 can drive all the transmission gear rings 544 that are meshed with them to rotate, and the transmission gear rings 544 can drive the power ring 51 to rotate, so that the low-pressure orifice plate 41 and the high-pressure orifice plate 42 can be flipped with the help of the power cylinder 32.

[0057] The implementation principle of a high- and low-pressure dual-purpose distillation tray structure in this application embodiment is as follows: In use, when high-pressure distillation is required, the power cylinder 32 drives the second overflow plate 312 to approach the first overflow plate 311 and abut against the first adjusting plate 313. The power block 331 drives the first adjusting plate 313 to slide upward and drives the second adjusting plate 314 to swing upward, so as to increase the overflow height and expand the overflow channel. The power block 331 drives all the power rings 51 to rotate. The power rings 51 drive all the corresponding high-pressure orifice plates 42 and low-pressure orifice plates 41 to flip, so that the high-pressure orifice plate 42 can flip to the conversion hole 22. The high-pressure orifice plate 42 closes the conversion hole 22, and the high-pressure gas pipe 421 and the float valve 422 serve as the gas phase port, so that the tray structure can be used for high-pressure distillation.

[0058] When low-pressure distillation is required, the power cylinder 32 drives the second overflow plate 312 away from the first overflow plate 311. The power block 331 drives the first adjusting plate 313 to slide down and drives the second adjusting plate 314 to swing down and rest on the second overflow plate 312 to reduce the overflow height and narrow the overflow channel. The power block 331 drives all the power rings 51 to rotate in the opposite direction. The power rings 51 drive all the corresponding high-pressure orifice plates 42 and low-pressure orifice plates 41 to flip in the opposite direction, so that the low-pressure orifice plate 41 can flip to the conversion hole 22. The low-pressure orifice plate 41 closes the conversion hole 22, and the channel formed by the hole notch 411 serves as the gas phase port, so that the tray structure can be used for low-pressure distillation. This allows the tray to switch between high-pressure distillation mode and low-pressure distillation mode, making it easy to achieve two uses for one tower.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high- and low-pressure dual-purpose distillation tray structure, disposed on the inner wall of a column body (1), characterized in that: It includes a liquid receiving plate (2), an overflow assembly (3), a changing hole assembly (4) and a drive assembly (5). The liquid receiving plate (2) is connected to the inner wall of the tower body (1), and a rectangular liquid discharge port (21) is left between one side of the liquid receiving plate (2) and the inner wall of the tower body (1). The overflow assembly (3) includes an overflow section (31), a power cylinder (32), and an adjustment section (33). The overflow section (31) includes a first overflow plate (311), a second overflow plate (312), a first adjustment plate (313), and a second adjustment plate (314). The first overflow plate (311) and the second overflow plate (312) are both located at the liquid outlet (21). The first overflow plate (311) is connected to the liquid receiving plate (2). The second overflow plate (312) is located on the side of the first overflow plate (311) away from the liquid receiving plate (2). An overflow channel is formed between the second overflow plate (312) and the inner wall of the tower body (1). The power cylinder (32) is connected to the tower body (1). The movable end of the power cylinder (32) is connected to the second overflow plate (312). The first adjusting plate (313) is located between the first overflow plate (311) and the second overflow plate (312). The first adjusting plate (313) is slidably mounted on the first overflow plate (311). The second adjusting plate (314) is hinged to the first adjusting plate (313). The adjusting part (33) is connected to the second overflow plate (312), the first adjusting plate (313), and the second adjusting plate (314) respectively. The adjusting part (33) is used to drive the first adjusting plate (313) and the second adjusting plate (314) to move when the second overflow plate (312) moves. During the process of the second overflow plate (312) coming into contact with the first adjusting plate (313), the adjusting part (33) causes the first adjusting plate (313) to slide upward and the second adjusting plate (314) to swing upward. During the process of the second overflow plate (312) moving to the furthest point from the first overflow plate (311), the adjusting part (33) causes the first adjusting plate (313) to slide downward and the second adjusting plate (314) to swing downward and rest on the second overflow plate (312). The receiving plate (2) has multiple conversion holes (22), and the hole changing assembly (4) is provided in multiple sets, and is provided at the conversion holes (22) in a corresponding manner. The hole changing assembly (4) includes a low-pressure orifice plate (41) and a high-pressure orifice plate (42). Multiple low-pressure orifice plates (41) are arranged around the central axis of the conversion hole (22). One side of the low-pressure orifice plate (41) is hinged to the top surface of the liquid receiving plate (2), and the other side is provided with a hole-forming notch (411). When all the low-pressure orifice plates (41) are flipped to the conversion hole (22), all the low-pressure orifice plates (41) together close the conversion hole (22), and all the hole-forming notches (411) together form a low-pressure gas phase port. Multiple high-pressure orifice plates (42) are arranged around the central axis of the conversion hole (22). One side of the high-pressure orifice plate (42) is hinged to the bottom surface of the liquid receiving plate (2). Each high-pressure orifice plate (42) is provided with a high-pressure gas pipe (421). A float valve (422) is slidably arranged on the high-pressure gas pipe (421). The high-pressure gas pipe (421) forms a high-pressure gas phase port. When all the high-pressure orifice plates (42) are flipped to the conversion hole (22), all the high-pressure orifice plates (42) jointly close the conversion hole (22). The drive assembly (5) is set on the liquid receiving plate (2). The drive assembly (5) is used to drive the high pressure plate (42) and low pressure plate (41) of all the hole changing assemblies (4) to rotate synchronously with the power of the power cylinder (32). When the low pressure plate (41) rotates to the conversion hole (22), the high pressure plate (42) rotates away from the conversion hole (22).

2. The high- and low-pressure dual-purpose distillation tray structure according to claim 1, characterized in that: The adjustment unit (33) includes a power block (331), a first slide rod (332) and a first adjusting rod (333). The power block (331) is connected to the second overflow plate (312) and slides through the first overflow plate (311). A power groove (3311) is provided on the power block (3311). The first slide rod (332) is slidably disposed in the lifting groove (3312) inclinedly opened on the groove wall of the power groove (3311). The first slide rod (332) is connected to one end of the first adjusting rod (333), and the other end of the first adjusting rod (333) is connected to the first adjusting plate (313). When the second overflow plate (312) approaches the first overflow plate (311), the groove wall of the lifting groove (3312) pushes the first adjusting plate (313) to slide upward.

3. The high- and low-pressure dual-purpose distillation tray structure according to claim 2, characterized in that: The adjustment unit (33) further includes a second slide rod (334), a second adjustment rod (335), and an adjustment connecting rod (336). The second slide rod (334) is slidably disposed in a tilting slide groove (3313) inclinedly opened on the wall of the power groove (3311). The tilting slide groove (3313) is located below the lifting slide groove (3312), and the tilt angle of the tilting slide groove (3313) is smaller than the tilt angle of the lifting slide groove (3312). The second slide rod (334) and the second adjustment rod (336) are connected to the second adjustment rod (337). One end of the rod (335) is connected to the second adjusting rod (335), which slides through the first adjusting rod (333) and the first adjusting plate (313) and extends out of the first adjusting plate (313). One end of the adjusting connecting rod (336) is hinged to the second adjusting rod (335), and the other end is hinged to the second adjusting plate (314). When the second overflow plate (312) approaches the first overflow plate (311), the wall of the flipping chute (3313) drives the second adjusting plate (314) to swing upward.

4. The high- and low-pressure dual-purpose distillation tray structure according to claim 2, characterized in that: The drive assembly (5) includes a power ring (51), a low-pressure drive unit (52), and a high-pressure drive unit (53). Multiple power rings (51) are provided, each corresponding to a conversion hole (22). The power rings (51) are rotatably disposed in a drive groove (23) opened on the bottom surface of the liquid receiving plate (2). The power rings (51) are coaxial with the conversion hole (22). Multiple low-pressure drive units (52) are provided, each corresponding to a low-pressure orifice plate (41). The low-pressure drive units (52) are connected to the power rings (51). The low-pressure drive units (52) are used to drive the low-pressure orifice plate (41) to flip when the power rings (51) rotate. Multiple high-pressure drive units (53) are provided, each corresponding to a high-pressure orifice plate (42). The high-pressure drive units (53) are connected to the power rings (51). The high-pressure drive units (53) are used to drive the high-pressure orifice plate (42) to flip when the power rings (51) rotate.

5. The dual-purpose high and low pressure distillation tray structure according to claim 4, characterized in that: The low-pressure orifice plate (41) is connected to a first hinge shaft (412), which is rotatably connected to the liquid receiving plate (2). The low-pressure drive unit (52) includes a push plate (521), a drive rod (522), a rotating rack (523), and a rotating gear (524). The push plate (521) is slidably disposed in the low-pressure slide groove (24) opened on the groove wall of the drive groove (23). The push plate (521) is connected to the inner wall of the power ring (51). The push plate (521) is provided with a pushing inclined surface (521). 1) One end of the drive rod (522) is connected to the drive head (5221), the drive head (5221) is slidably disposed in the push groove (5212) opened on the push inclined surface (5211), the other end of the drive rod (522) is connected to the flip rack (523), the flip rack (523) is slidably disposed in the relief groove (25) opened on the top surface of the liquid receiving plate (2), the flip rack (523) meshes with the flip gear (524), and the flip gear (524) is connected to the first hinge shaft (412).

6. The high- and low-pressure dual-purpose distillation tray structure according to claim 4, characterized in that: The high-pressure orifice plate (42) is connected to a second hinge shaft (423), which is rotatably connected to the liquid receiving plate (2). The high-pressure drive unit (53) includes a push block (531), a drive shaft (532), and a flip block (533). There are two push blocks (531), which are located at opposite ends of the axis of the second hinge shaft (423). The push blocks (531) are connected to the inner wall of the power ring (51). There are two drive shafts (532), which correspond one-to-one with the push blocks (531). The drive shafts (532) are inserted into the flip holes (4231) opened at the shaft end of the second hinge shaft (423). The driving shaft (532) is connected to the cylindrical sleeve of the second hinge shaft (423). A support block (5321) is slidably sleeved on the driving shaft (532). The support block (5321) is connected to the bottom surface of the liquid receiving plate (2). There are two flipping blocks (533), which correspond one-to-one with the driving shaft (532). The flipping blocks (533) are connected to the driving shaft (532) and are slidably set in the flipping spiral groove (4232) opened on the wall of the flipping hole (4231). The flipping spiral grooves (4232) at both ends of the second hinge shaft (423) have the same rotation direction. The push block (531) is used to push the driving shaft (532) into the flipping hole (4231).

7. The high- and low-pressure dual-purpose distillation tray structure according to claim 6, characterized in that: A sliding block (5322) is connected to the support block (5321), and the sliding block (5322) is slidably disposed in the sliding groove (5323) opened on the drive shaft (532).

8. The high- and low-pressure dual-purpose distillation tray structure according to claim 4, characterized in that: The drive assembly (5) further includes a transmission part (54), which drives the power block (331) and all the power rings (51) to rotate by means of the driving force generated by the sliding of the power block (331).

9. The high- and low-pressure dual-purpose distillation tray structure according to claim 8, characterized in that: The conversion holes (22) are arranged in a matrix. The transmission part (54) includes a connecting rod (541), a push rod (542), a transmission rack (543), and a transmission gear ring (544). The connecting rod (541) is connected to the power block (331). Multiple push rods (542) and transmission racks (543) are provided and correspond one-to-one. The push rod (542) is connected to the connecting rod (541) and the transmission rack (543) respectively. Multiple transmission racks (543) correspond one-to-one with multiple rows of conversion holes (22) along the sliding direction of the power block (331). Multiple transmission gear rings (544) are provided and are fitted one-to-one with the power ring (51). Each transmission rack (543) meshes with all the transmission gear rings (544) in its corresponding row.

10. The high- and low-pressure dual-purpose distillation tray structure according to claim 1, characterized in that: A sealing strip (43) is provided between the sides of two adjacent low-pressure orifice plates (41) that are close to each other and between the sides of two adjacent high-pressure orifice plates (42) that are close to each other.

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