A high-low pressure dual-purpose rectifying column plate structure

Abstract

The application relates to a high-low pressure dual-purpose rectifying column plate structure and relates to the technical field of rectifying columns, which 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, 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, the low-pressure driving part comprises a push plate, a driving rod, a turnover rack and a turnover gear, the high-pressure driving part comprises a push block, a driving shaft and a turnover block, and the transmission part comprises a connecting rod, a push rod, a transmission rack and a transmission gear wheel, the rectifying mode of the column plate can be switched through adjustment of the overflow structure and the diameter of the gas phase port. The application has the effect that the column plate can switch the high-pressure rectifying mode and the low-pressure rectifying 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:

[0007] 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.

[0008] 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.

[0009] 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.

[0010] The first adjusting plate is located between the first overflow plate and the second overflow plate, is slidingly arranged on the first overflow plate, and is hingedly connected to the second adjusting plate. The adjusting part is connected to the second overflow plate, the first adjusting plate and the second adjusting plate respectively, and is used to drive the first adjusting plate and the second adjusting plate to move when the second overflow plate moves.

[0011] During the process that the second overflow plate abuts against the first adjusting plate, the adjusting part makes the first adjusting plate slide up and the second adjusting plate swing up. During the process that the second overflow plate moves farthest away from the first overflow plate, the adjusting part makes the first adjusting plate slide down and the second adjusting plate swing down and rest on the second overflow plate.

[0012] The liquid receiving plate is provided with a plurality of conversion holes, and a plurality of conversion hole assemblies are arranged at the conversion holes one by one. The conversion hole assembly comprises a low-pressure hole plate and a high-pressure hole plate.

[0013] The low-pressure hole plate is provided around the central axis of the conversion hole. One side of the low-pressure hole plate is hingedly connected 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 hole plates are flipped to the conversion hole, all the low-pressure hole plates collectively close the conversion hole, and all the hole-forming notches collectively form a low-pressure gas phase port.

[0014] The high-pressure hole plate is provided around the central axis of the conversion hole. One side of the high-pressure hole plate is hingedly connected to the bottom surface of the liquid receiving plate, and a high-pressure gas pipe is arranged on each high-pressure hole plate. A float valve is slidingly arranged on the high-pressure gas pipe. The high-pressure gas pipe forms a high-pressure gas phase port. When all the high-pressure hole plates are flipped to the conversion hole, all the high-pressure hole plates collectively close the conversion hole.

[0015] The driving assembly is arranged on the liquid receiving plate. The driving assembly is used to drive all the high-pressure hole plates and low-pressure hole plates of the conversion hole assembly to flip synchronously by the power of the power cylinder. When the low-pressure hole plate is flipped to the conversion hole, the high-pressure hole plate is flipped away from the conversion hole.

[0016] Optionally, the adjusting part comprises a power block, a first sliding rod and a first adjusting rod. The power block is connected to the second overflow plate and slidingly arranged on the first overflow plate. The power block is provided with a power groove. The first sliding rod is slidingly arranged in the inclined lifting sliding groove on the groove wall of the power groove. The first sliding rod is connected to one end of the first adjusting rod. 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 sliding groove pushes the first adjusting plate to slide up.

[0017] Optionally, the adjusting part further comprises a second sliding rod, a second adjusting rod and an adjusting connecting rod, the second sliding rod is slidingly arranged in an inclined turnover sliding groove formed in the wall of the power groove, the turnover sliding groove is located below the lifting sliding groove, and the inclination angle of the turnover sliding groove is smaller than the inclination angle of the lifting sliding groove, the second sliding rod is connected with one end of the second adjusting rod, the second adjusting rod is slidingly arranged through the first adjusting rod and the first adjusting plate and out of the first adjusting plate, one end of the adjusting connecting rod is hingedly connected with the second adjusting rod, and the other end is hingedly connected with the second adjusting plate, when the second overflow plate approaches the first overflow plate, the wall of the turnover sliding groove drives the second adjusting plate to swing upward.

[0018] Optionally, the driving assembly comprises a power ring, a low-pressure driving part and a high-pressure driving part, the power ring is provided in plurality and corresponds to the conversion holes one by one, the power ring is rotationally arranged in a driving groove formed in the bottom surface of the liquid receiving plate, the power ring is coaxial with the conversion holes, the low-pressure driving part is provided in plurality and corresponds to the low-pressure hole plates one by one, the low-pressure driving part is connected with the power ring, and the low-pressure driving part is used to drive the low-pressure hole plates to overturn when the power ring rotates, the high-pressure driving part is provided in plurality and corresponds to the high-pressure hole plates one by one, the high-pressure driving part is connected with the power ring, and the high-pressure driving part is used to drive the high-pressure hole plates to overturn when the power ring rotates.

[0019] Optionally, the low-pressure hole plate is connected with a first hinged shaft, the first hinged shaft is rotationally connected with the liquid receiving plate, the low-pressure driving part comprises a push plate, a driving rod, a turnover rack and a turnover gear, the push plate is slidingly arranged in a low-pressure sliding groove formed in the wall of the driving groove, the push plate is connected with the inner wall of the power ring, a pushing slope is formed on the push plate, one end of the driving rod is connected with a driving head, the driving head is slidingly arranged in a pushing sliding groove formed in the pushing slope, the other end of the driving rod is connected with the turnover rack, the turnover rack is slidingly arranged in a giving-up groove formed in the top surface of the liquid receiving plate, the turnover rack is engaged with the turnover gear, and the turnover gear is connected with the first hinged shaft.

[0020] Optionally, the high-pressure hole plate is connected with a second hinged shaft, the second hinged shaft is rotationally connected with the liquid receiving plate, the high-pressure driving part comprises a push block, a driving shaft and a turnover block, the push block is provided in two, the two push blocks are respectively located at the two ends in the axial direction of the second hinged shaft, the push block is connected with the inner wall of the power ring, the driving shaft is provided in two and corresponds to the push block one by one, the driving shaft is inserted into a turnover hole formed in the shaft end of the second hinged shaft, the driving shaft is connected with the cylindrical sleeve pair of the second hinged shaft, a supporting block is slidingly arranged on the driving shaft, the supporting block is connected with the bottom surface of the liquid receiving plate, the turnover block is provided in two and corresponds to the driving shaft one by one, the turnover block is connected with the driving shaft and slidingly arranged in a turnover helical groove formed in the hole wall of the turnover hole, the rotation directions of the turnover helical grooves at the two ends of the second hinged shaft are consistent, and the push block is used to push and press the driving shaft to slide into the turnover hole.

[0021] Optionally, the supporting block is connected with a sliding block, and the sliding block is slidingly arranged in a sliding groove formed in the driving shaft.

[0022] Optionally, the driving assembly further comprises a transmission part, the transmission part being in transmission connection with the power block and all the power rings, and the transmission part being used for driving all the power rings to rotate by means of the driving force formed by the sliding of the power block.

[0023] Optionally, the conversion holes are arranged in a matrix, the transmission part comprises connecting rods, push rods, transmission racks and transmission gear rings, the connecting rods are connected to the power block, the push rods and the transmission racks are both provided with a plurality of ones and are in one-to-one correspondence, the push rods are respectively connected to the connecting rods and the transmission racks, the plurality of transmission racks are in one-to-one correspondence with the plurality of columns of conversion holes along the sliding direction of the power block, the transmission gear rings are provided with a plurality of ones and are in one-to-one correspondence with the power rings, and each transmission rack is in meshing with all the transmission gear rings corresponding to the column of the transmission rack.

[0024] Optionally, a sealing strip is arranged between the sides of the two adjacent low-pressure hole plates close to each other and between the sides of the two adjacent high-pressure hole plates close to each other.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] The high-low pressure dual-purpose rectification tray structure comprises a liquid receiving plate, an overflow assembly, a hole conversion assembly and a driving assembly. By driving the second overflow plate to be close to or away from the first overflow plate, the size of the overflow channel can be adjusted, so that the overflow channel can be suitable for high-pressure rectification or low-pressure rectification. The power block can drive the first adjusting rod and the second adjusting rod to slide. Since the sliding distances of the first adjusting rod and the second adjusting rod are inconsistent, the first adjusting rod can drive the first adjusting plate to slide, and the second adjusting rod can drive the second adjusting plate to swing, so that the overflow height can be adjusted, and the overflow height can be suitable for high-pressure rectification or low-pressure rectification. The power block can drive all the power rings to rotate, and the power rings can drive all the high-pressure hole plates and low-pressure hole plates corresponding to the power rings to flip, so that the diameter of the gas phase port can be adjusted, and the gas phase port can be suitable for high-pressure rectification or low-pressure rectification. Therefore, the tray structure of the present application can switch between high-pressure rectification mode and low-pressure rectification mode, and is convenient for realizing one tower with two purposes. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0028] Figure 2 is a structural schematic diagram of a high-pressure hole plate and a transmission part;

[0029] Figure 3 is a structural schematic diagram of an overflow assembly;

[0030] Figure 4 is a structural schematic diagram of a low-pressure driving part;

[0031] Figure 5 is a structural schematic diagram of the high-pressure driving part;

[0032] Figure 6 is a structural schematic diagram of the driving shaft, the overturning block, the overturning hole and the overturning helical groove assembly relationship;

[0033] Figure 7 is a structural schematic diagram of the push plate, the pushing slope, the pushing sliding groove and the driving head.

[0034] Legend:

[0035] 1, tower body; 2, liquid receiving plate; 21, liquid downcomer; 22, conversion hole; 23, driving groove; 24, low-pressure sliding groove; 25, let-in slot; 3, overflow assembly; 31, overflow part; 311, first overflow plate; 312, second overflow plate; 313, first adjusting plate; 314, second adjusting plate; 32, power cylinder; 33, adjusting part; 331, power block; 3311, power groove; 3312, lifting sliding groove; 3313, overturning sliding groove; 332, first sliding rod; 333, first adjusting rod; 334, second sliding rod; 335, second adjusting rod; 336, adjusting connecting rod; 4, hole conversion assembly; 41, low-pressure hole plate; 411, hole forming notch; 412, first hinged shaft; 42, high-pressure hole plate; 421, high-pressure air pipe; 422, float valve; 423, second hinged shaft; 4231, overturning hole; 4232, overturning helical groove; 43, sealing strip; 5, driving assembly; 51, power ring; 52, low-pressure driving part; 521, push plate; 5211, pushing slope; 5212, pushing sliding groove; 522, driving rod; 5221, driving head; 523, overturning rack; 524, overturning gear; 53, high-pressure driving part; 531, push block; 532, driving shaft; 5321, supporting block; 5322, sliding block; 5323, sliding groove; 533, overturning block; 54, transmission part; 541, connecting rod; 542, push rod; 543, transmission rack; 544, transmission gear ring. DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The application is further described in detail.

[0037] The application discloses a high-low pressure dual-purpose rectifying tower plate structure. Figure 1 and Figure 2 A high-low pressure dual-purpose rectifying tower plate structure is arranged on the inner wall of the tower body 1, and comprises a liquid receiving plate 2, an overflow assembly 3, a hole conversion assembly 4 and a driving assembly 5.

[0038] Referring to Figure 1 The liquid receiving plate 2 is fixedly connected to the inner wall of the tower body 1, and a rectangular liquid downcomer 21 is left between one side of the liquid receiving plate 2 and the inner wall of the tower body 1, so as to provide space for the overflow of the liquid phase.

[0039] Referring to Figure 1 and Figure 2 , the overflow assembly 3 comprises an overflow part 31, a power cylinder 32 and an adjusting part 33, the overflow part 31 comprises a first overflow plate 311, a second overflow plate 312, a first adjusting plate 313 and a second adjusting plate 314.

[0040] Referring to Figure 1 , the first overflow plate 311 and the second overflow plate 312 are both arranged at the downcomer 21 and are both arranged vertically. One side of the first overflow plate 311 is fixedly connected to the liquid receiving plate 2. The second overflow plate 312 is located at the side of the first overflow plate 311 away from the liquid receiving plate 2, and an overflow channel is formed between the second overflow plate 312 and the inner wall of the column body 1, which is used for overflow of the liquid phase. The power cylinder 32 is fixedly connected to the outer wall of the column body 1, the movable end of the power cylinder 32 slides into the column body 1 and is fixedly connected to the second overflow plate 312, and the power cylinder 32 is used to drive the second overflow plate 312 to move close 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.

[0041] Referring to Figure 3 , the first adjusting plate 313 is arranged vertically, the first adjusting plate 313 is located between the first overflow plate 311 and the second overflow plate 312, and the first adjusting plate 313 is arranged on the first overflow plate 311 in a vertical direction. The second adjusting plate 314 is hinged to the top end 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, and is used to drive the first adjusting plate 313 and the second adjusting plate 314 to move when the second overflow plate 312 moves.

[0042] In the process that the second overflow plate 312 abuts against the first adjusting plate 313, the adjusting part 33 makes the first adjusting plate 313 slide upward and the second adjusting plate 314 swing upward. In the present application, the second adjusting plate 314 can swing to a position coplanar with the first adjusting plate 313, and the first adjusting plate 313 and the second adjusting plate 314 can increase the overflow height to meet the weir height requirement of the overflow weir of high-pressure rectification; in the process that the second overflow plate 312 moves farthest away from the first overflow plate 311, the adjusting part 33 makes the first adjusting plate 313 slide downward and the second adjusting plate 314 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, and the first adjusting plate 313 and the second adjusting plate 314 can reduce the overflow height to meet the weir height requirement of the overflow weir of low-pressure rectification.

[0043] Referring to Figure 1 and Figure 2, the liquid receiving plate 2 is provided with a plurality of conversion holes 22, the conversion hole assembly 4 is provided with a plurality of groups and is arranged at the conversion holes 22 one by one, and the conversion hole assembly 4 comprises a low-pressure hole plate 41 and a high-pressure hole plate 42.

[0044] The low-pressure hole plate 41 is provided with three around the central axis of the conversion hole 22, one side of the low-pressure hole 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 hole plates 41 are turned to the conversion hole 22, all the low-pressure hole plates 41 jointly close the conversion hole 22, and all the hole forming notches 411 jointly form a low-pressure gas phase port, and the low-pressure gas phase port is used for flowing a low-pressure gas phase.

[0045] Referring to Figure 2 The high-pressure hole plate 42 is provided with three around the central axis of the conversion hole 22, one side of the high-pressure hole plate 42 is hinged to the bottom surface of the liquid receiving plate 2, and a high-pressure gas pipe 421 is fixedly arranged on each high-pressure hole plate 42, 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, the high-pressure gas phase port is used for flowing a high-pressure gas phase, the diameter of the high-pressure gas phase port is less than half of the diameter of the low-pressure gas phase port, and when all the high-pressure hole plates 42 are turned to the conversion hole 22, all the high-pressure hole plates 42 jointly close the conversion hole 22.

[0046] Referring to Figure 1 and Figure 2 The driving assembly 5 is arranged on the liquid receiving plate 2, and is used for driving the high-pressure hole plates 42 and the low-pressure hole plates 41 of all the conversion hole assemblies 4 to be synchronously turned by the power of the power cylinder 32; when the low-pressure hole plate 41 is turned to the conversion hole 22, the high-pressure hole plate 42 is turned away from the conversion hole 22 and is in a vertical state; and when the high-pressure hole plate 42 is turned to the conversion hole 22, the low-pressure hole plate 41 is turned away from the conversion hole 22 and is attached to the top surface of the liquid receiving plate 2.

[0047] When high-pressure rectification is needed, the power cylinder 32 drives the second overflow plate 312 to approach the first overflow plate 311 and abut on the first adjusting plate 313, the adjusting part 33 drives the first adjusting plate 313 to slide up and drives the second adjusting plate 314 to swing up 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, the second overflow plate 312 widens the overflow channel, which meets the requirement of high-pressure rectification on the weir height; the driving assembly 5 can drive the high-pressure hole plate 42 and the low-pressure hole plate 41 to flip synchronously by the power of the power cylinder 32, so that the high-pressure hole plate 42 is flipped to the conversion hole 22 and the low-pressure hole plate 41 is flipped and adheres to the top surface of the liquid receiving plate 2, the high-pressure hole plate 42 closes the conversion hole 22, the high-pressure gas pipe 421 cooperates with the float valve 422 as the high-pressure gas phase port for high-pressure gas phase flow, which reduces the diameter of the gas phase port and meets the requirement of high-pressure rectification on the diameter of the gas phase port, so that the tray structure can be suitable for high-pressure rectification operation after the overflow assembly 3 and the hole conversion assembly 4 are adjusted.

[0048] When low-pressure rectification is needed, the power cylinder 32 drives the second overflow plate 312 to move away from the first overflow plate 311, the adjusting part 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 on the second overflow plate 312, the first adjusting plate 313 and the second adjusting plate 314 reduce the overflow height, the second overflow plate 312 narrows the overflow channel, which meets the requirement of low-pressure rectification on the weir height; at the same time, the driving assembly 5 can drive the high-pressure hole plate 42 and the low-pressure hole plate 41 to flip synchronously by the power of the power cylinder 32, so that the low-pressure hole plate 41 is flipped to the conversion hole 22 and the high-pressure hole plate 42 moves away from the conversion hole 22, the low-pressure hole plate 41 closes the conversion hole 22, all the low-pressure gas phase ports formed by the hole notches 411 are used for low-pressure gas phase flow, which increases the diameter of the gas phase port and meets the requirement of low-pressure rectification on the diameter of the gas phase port, so that the tray structure can be suitable for low-pressure rectification operation after the overflow assembly 3 and the hole conversion assembly 4 are adjusted.

[0049] Based on the above analysis, the weir height can be adjusted by the second overflow plate 312, the first adjusting plate 313 and the second adjusting plate 314, and the gas phase port can be adjusted by the high-pressure hole plate 42 and the low-pressure hole plate 41, so that the tray structure of the present application can conveniently switch between high-pressure rectification mode and low-pressure rectification mode, and realizes one tower for two purposes.

[0050] Referring to Figure 4 and Figure 5In order to improve the sealing performance of the low-pressure hole plate 41 and the high-pressure hole plate 42 on the conversion hole 22, a sealing strip 43 is arranged between the sides of the two adjacent low-pressure hole plates 41 and the sides of the two adjacent high-pressure hole plates 42. When the low-pressure hole plate 41 or the high-pressure hole plate 42 seals the conversion hole 22, the sealing strip 43 can improve the sealing effect of the low-pressure hole plate 41 or the high-pressure hole plate 42, so as to prevent the liquid or gas leakage.

[0051] Specifically, referring to Figure 3 The adjusting part 33 comprises a power block 331, a first sliding rod 332 and a first adjusting rod 333.

[0052] The power block 331 is fixedly connected to the second overflow plate 312 and slidably arranged on the first overflow plate 311. The power block 331 is provided with a power groove 3311. The first sliding rod 332 is slidably arranged in an inclined lifting sliding groove 3312 on the groove wall of the power groove 3311. One end of the first adjusting rod 333 is fixedly connected to the first sliding rod 332, and the other end of the first adjusting rod 333 is fixedly 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 sliding groove 3312 pushes the first adjusting plate 313 to slide upwards. When the second overflow plate 312 moves away from the first overflow plate 311, the groove wall of the lifting sliding groove 3312 pushes the first adjusting plate 313 to slide downwards.

[0053] 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. Since the lifting sliding groove 3312 is arranged in an inclined manner, the groove wall of the lifting sliding groove 3312 can push the first adjusting rod 333 to slide through the first sliding rod 332, so that the height of the first adjusting plate 313 can be adjusted conveniently.

[0054] Referring to Figure 3 In order to make the second adjusting plate 314 swing synchronously when the first adjusting plate 313 slides, the adjusting part 33 further comprises a second sliding rod 334, a second adjusting rod 335 and an adjusting connecting rod 336.

[0055] The second slide rod 334 is slidingly arranged in the overturning sliding groove 3313 obliquely arranged on the groove wall of the power groove 3311, the overturning sliding groove 3313 is below the lifting sliding groove 3312, and the inclination angle of the overturning sliding groove 3313 is smaller than that of the lifting sliding groove 3312. The second slide rod 334 is fixedly connected with one end of the second adjusting rod 335, the second adjusting rod 335 slidingly penetrates the first adjusting rod 333 and the first adjusting plate 313 and penetrates out of the first adjusting plate 313. One end of the adjusting connecting rod 336 is hingedly connected with the second adjusting rod 335, and the other end is hingedly connected with the second adjusting plate 314. When the second overflow plate 312 is close to the first overflow plate 311, the groove wall of the overturning sliding groove 3313 drives the second adjusting plate 314 to swing upward, and when the second overflow plate 312 is away from the first overflow plate 311, the groove wall of the overturning sliding groove 3313 drives the second adjusting plate 314 to swing downward.

[0056] Since the second adjusting rod 335 penetrates the first adjusting rod 333, the second adjusting rod 335 can move with the first adjusting rod 333, the inclined overturning sliding groove 3313 can push the second adjusting rod 335 to slide, and since the inclination angle of the overturning sliding groove 3313 is smaller than that of the lifting sliding groove 3312, the sliding distance of the second adjusting rod 335 is smaller than that of the first adjusting rod 333, so that 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, the adjusting connecting rod 336 can be driven to swing to drive the second adjusting plate 314 to swing relative to the first adjusting plate 313, so that the second adjusting plate 314 can swing when the first adjusting plate 313 slides.

[0057] Specifically, referring to Figure 4 and Figure 5 , the driving assembly 5 includes a power ring 51, a low-pressure driving part 52, and a high-pressure driving part 53.

[0058] The power ring 51 is provided in plurality and corresponds to the conversion hole 22 one by one, the power ring 51 is rotationally arranged in the driving groove 23 arranged on the bottom surface of the liquid receiving plate 2, and the rotation axis of the power ring 51 is coaxial with the central axis of the conversion hole 22. The low-pressure driving part 52 is provided in plurality and corresponds to the low-pressure hole plate 41 one by one, the low-pressure driving part 52 is connected to the power ring 51, and the low-pressure driving part 52 is used to drive the low-pressure hole plate 41 to overturn when the power ring 51 rotates. The high-pressure driving part 53 is provided in plurality and corresponds to the high-pressure hole plate 42 one by one, the high-pressure driving part 53 is connected to the power ring 51, and the high-pressure driving part 53 is used to drive the high-pressure hole plate 42 to overturn when the power ring 51 rotates.

[0059] By rotating the power ring 51, all low-pressure hole plates 41 and high-pressure hole plates 42 at the conversion hole 22 can be synchronously driven to flip over, which realizes the synchronous driving of the low-pressure hole plates 41 and the high-pressure hole plates 42 and enables one driving member to drive three low-pressure hole plates 41 and three high-pressure hole plates 42 to act.

[0060] Specifically, referring to Figure 4 , the low-pressure driving part 52 includes a push plate 521, a driving rod 522, a flipper rack 523, and a flipper gear 524.

[0061] The low-pressure hole plate 41 is fixedly connected with a first hinged shaft 412, the first hinged shaft 412 is rotationally connected to the liquid receiving plate 2, and the first hinged shaft 412 forms a hinged structure of the low-pressure hole plate 41 and the liquid receiving plate 2.

[0062] Referring to Figure 4 and Figure 7 , the push plate 521 is slidingly arranged in a low-pressure sliding groove 24 formed in the slot wall of the driving slot 23, the push plate 521 is fixedly connected to the inner wall of the power ring 51, and the push plate 521 is provided with a push inclined surface 5211. One end of the driving rod 522 is fixedly connected with a driving head 5221, the driving head 5221 is slidingly arranged in a push sliding groove 5212 formed in the push inclined surface 5211, and the other end of the driving rod 522 is fixedly connected with the flipper rack 523. The flipper rack 523 is slidingly arranged in a let-in slot 25 formed in the top surface of the liquid receiving plate 2, the let-in slot 25 is communicated with the low-pressure sliding groove 24, the flipper rack 523 is engaged with the flipper gear 524, and the flipper gear 524 is fixedly connected to the first hinged shaft 412.

[0063] The power ring 51 can drive the push plate 521 to slide, the push plate 521 can reciprocatingly drive the driving rod 522 to move through the push sliding groove 5212 and the driving head 5221, the driving rod 522 can drive the flipper rack 523 to slide, the flipper rack 523 can drive the flipper gear 524 to rotate, and the flipper gear 524 can drive the first hinged shaft 412 to rotate, so that the power ring 51 can drive the low-pressure hole plate 41 to flip over when rotating.

[0064] Specifically, referring to Figure 5 and Figure 6 , the high-pressure driving part 53 includes a push block 531, a driving shaft 532, and a flipper block 533.

[0065] The high-pressure hole plate 42 is fixedly connected with a second hinged shaft 423, the second hinged shaft 423 is rotationally connected to the liquid receiving plate 2, and the second hinged shaft 423 forms a hinged structure of the high-pressure hole plate 42 and the liquid receiving plate 2.

[0066] The push block 531 is provided with two, and the two push blocks 531 are located at both ends of the second hinge shaft 423 in the axial direction, and the push block 531 is fixedly connected to the inner wall of the power ring 51. The drive shaft 532 is provided with two, and one-to-one corresponds to the push block 531, and the two drive shafts 532 are located at both ends of the second hinge shaft 423, and the drive shaft 532 is inserted into the turnover hole 4231 opened at the shaft end of the second hinge shaft 423, and the drive shaft 532 is connected with the cylindrical sleeve pair of the second hinge shaft 423. The support block 5321 is slidably arranged on the drive shaft 532, and the support block 5321 is fixedly connected to the bottom surface of the liquid receiving plate 2. The turnover block 533 is provided with two, and one-to-one corresponds to the drive shaft 532, and the turnover block 533 is fixedly connected to the drive shaft 532, and is slidably arranged in the turnover spiral groove 4232 opened in the hole wall of the turnover hole 4231, and the rotation directions of the turnover spiral grooves 4232 at both ends of the second hinge shaft 423 are consistent, and the push block 531 is used to push the drive shaft 532 to slide into the turnover hole 4231.

[0067] Referring to Figure 6 Because the rotation directions of the turnover spiral grooves 4232 at both ends of the second hinge shaft 423 are consistent, the drive shaft 532 located at one end of the second hinge shaft 423 can drive the second hinge shaft 423 to rotate forward when being pushed, and the drive shaft 532 located at the other end of the second hinge shaft 423 can drive the second hinge shaft 423 to rotate reversely when being pushed.

[0068] The power ring 51 can drive the push block 531 to rotate, and the push block 531 can push the drive shaft 532 to slide into the turnover hole 4231 when rotating, and the drive shaft 532 can drive the turnover block 533 to move along the axial direction of the second hinge shaft 423 with the support block 5321 as the support. Because the turnover block 533 is slidably arranged in the turnover spiral groove 4232, the linearly moving turnover block 533 can drive the second hinge shaft 423 to rotate by pushing the groove wall of the turnover spiral groove 4232, so that the power ring 51 can drive the high-pressure hole plate 42 to turn over when rotating.

[0069] In particular, referring to Figure 6 , the support block 5321 is fixedly connected with a sliding block 5322, and the sliding block 5322 is slidably arranged in the sliding groove 5323 opened in the drive shaft 532, and the sliding block 5322 and the sliding groove 5323 form a sliding connection structure of 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.

[0070] Referring to Figure 2, in order to enable the action of the power ring 51 to be driven by the driving force formed by the sliding of the power block 331, the driving assembly 5 further comprises a transmission part 54, which is in transmission connection with the power block 331 and all the power rings 51, and is used to drive all the power rings 51 to rotate by the driving force formed by the sliding of the power block 331, so that, on the one hand, the power rings 51 do not need to be driven by an additional driving source, the weight of the tray is reduced, and the manufacturing cost is lowered, and on the other hand, all the power rings 51 can be synchronously driven to act.

[0071] Specifically, referring to Figure 2 , the transmission part 54 comprises a connecting rod 541, a push rod 542, a transmission rack 543 and a transmission ring gear 544.

[0072] The conversion holes 22 are arranged in a matrix. The connecting rod 541 is fixedly connected to the power block 331. The push rod 542 and the transmission rack 543 are both provided with a plurality of ones, and are one-to-one corresponding, and the push rod 542 is fixedly connected to the connecting rod 541 and the transmission rack 543 respectively. The plurality of transmission racks 543 correspond to the plurality of columns of conversion holes 22 along the sliding direction of the power block 331 one-to-one. The transmission ring gear 544 is provided with a plurality of ones, and is fixedly sleeved on the power ring 51 one-to-one corresponding, and each transmission rack 543 is in meshing with all the transmission ring gears 544 corresponding to the column of the transmission rack 543.

[0073] Since the connecting rod 541 can move along 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 rack 543 can drive all the transmission ring gears 544 meshing therewith to rotate, and the transmission ring gear 544 can drive the power ring 51 to rotate, so that the low-pressure hole plate 41 and the high-pressure hole plate 42 can be turned over by the power of the power cylinder 32.

[0074] The implementation principle of the high-low pressure dual-purpose rectifying tray structure in the embodiment of the application is as follows: when high-pressure rectification is needed during use, the power cylinder 32 drives the second overflow plate 312 to be close to the first overflow plate 311 and abut on 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 ring 51 drives all the high-pressure hole plates 42 and low-pressure hole plates 41 corresponding thereto to turn over, so that the high-pressure hole plate 42 can be turned over to the conversion hole 22, the high-pressure hole plate 42 closes the conversion hole 22, and the high-pressure gas pipe 421 and the float valve 422 are used as the gas phase port, so that the tray structure can be suitable for high-pressure rectification.

[0075] When low-pressure rectification is needed, the power cylinder 32 drives the second overflow plate 312 to move 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, so as to reduce the overflow height and the overflow passage, the power block 331 drives all the power rings 51 to rotate reversely, the power ring 51 drives all the high-pressure hole plates 42 and low-pressure hole plates 41 corresponding to itself to flip reversely, so that the low-pressure hole plate 41 can be flipped to the conversion hole 22, the low-pressure hole plate 41 closes the conversion hole 22, and the passage surrounded by the hole gap 411 is used as the gas phase port, so that the tray plate structure can be suitable for low-pressure rectification, so that the tray plate can switch between high-pressure rectification mode and low-pressure rectification mode, and one tower can be used for two purposes.

[0076] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present 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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