An energy-saving fractionating column

Abstract

The present invention relates to the technical field of fractionating towers. The present invention provides an energy-saving fractionating tower, which includes a tower barrel, and a packing member is arranged inside the tower barrel; a first baffle is arranged inside the tower barrel and is located below the packing member. The outer peripheral wall of the first baffle is slidably matched with the inner wall of the tower barrel. The first baffle has a plurality of first through holes arranged at intervals; a second baffle is slidably arranged along the axial direction of the tower barrel inside the tower barrel and is located above the first baffle. The second baffle has a plurality of second through holes arranged at intervals. The second baffle can also move downward relative to the first baffle to block the second through holes by means of the first baffle, and a water storage space for soaking and cleaning the packing member is formed above the second baffle inside the tower barrel. The first through holes and the second through holes on the first baffle and the second baffle can ensure gas-liquid contact during normal fractionation and do not affect the normal operation of the fractionating tower. During cleaning, a water storage space can be formed by switching, realizing the combination of the fractionation and cleaning functions and improving the practicability of the fractionating tower.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of fractionating towers, and specifically, to an energy-saving fractionating tower. Background Art

[0002] In many industrial fields such as chemical engineering and metallurgy, an air separation fractionating tower is the core equipment for realizing the separation of air components. After long-term operation, various impurities and dirt will accumulate inside the fractionating tower, affecting the separation performance and even causing equipment failures. Therefore, it needs to be cleaned regularly. Currently, spray cleaning, immersion cleaning, and disassembly cleaning are the mainstream cleaning methods. Spray cleaning is not thorough, and disassembly cleaning has a high cost. To reduce the waste of cleaning liquid and cost investment, many enterprises choose immersion cleaning or circulating immersion cleaning processes. By recycling and filtering the cleaning liquid, the amount of cleaning liquid used is reduced to a certain extent. However, this method has some defects: during the circulation process, it is difficult for the cleaning liquid to fully penetrate into the packing inside the fractionating tower, and the flow and scouring effect of the cleaning liquid are limited, resulting in dirt residue. Summary of the Invention

[0003] To overcome the above defects, embodiments of the present invention provide an energy-saving fractionating tower, which solves the technical problems of incomplete cleaning or high cleaning cost investment of the fractionating tower in the prior art.

[0004] According to one aspect, at least one embodiment of the present invention provides an energy-saving fractionating tower, including:

[0005] A tower barrel;

[0006] A packing member, arranged inside the tower barrel;

[0007] A first baffle, arranged inside the tower barrel and located below the packing member. The outer peripheral wall of the first baffle is slidably matched with the inner wall of the tower barrel, and the first baffle has a plurality of first through holes arranged at intervals;

[0008] A second baffle, slidably arranged along the axial direction of the tower barrel inside the tower barrel and located above the first baffle. The second baffle has a plurality of second through holes arranged at intervals. The second baffle can move upward relative to the first baffle to communicate the first through holes and the second through holes, and the second baffle can also move downward relative to the first baffle to block the second through holes by means of the first baffle. A water storage space for soaking and cleaning the packing member is formed above the second baffle inside the tower barrel.

[0009] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, it further includes:

[0010] The first rotating shaft is rotatably arranged below the packing member along the axial direction of the tower barrel. The first baffle has a first avoidance hole for the first rotating shaft to penetrate through. The first rotating shaft penetrates through the second baffle and is rotatably engaged with the second baffle. On the inner peripheral wall of the first avoidance hole, there is a first clamping post extending towards the axis side. On the outer peripheral wall of the first rotating shaft, there is a spiral guiding groove that slidably cooperates with the first clamping post. The first baffle is configured to be able to move up and down along the first rotating shaft under the combined action of the spiral guiding groove and the first clamping post.

[0011] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, the bottom of the second baffle has a number of plug heads arranged at intervals. After the second baffle descends and approaches the first baffle, the plug heads can be inserted into the first through holes one by one to block the first through holes.

[0012] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, it further includes:

[0013] The second rotating shaft is rotatably arranged below the packing member. The second rotating shaft has a guiding groove. The second baffle has a second avoidance hole. The second rotating shaft is arranged in the second avoidance hole, and the second rotating shaft penetrates through the first baffle and is rotatably engaged with the first baffle. On the inner peripheral wall of the second avoidance hole, there is an axially extending second clamping post. The second clamping post is configured to be movable along the guiding groove. After the second rotating shaft rotates, it can drive the second baffle to move up and down relative to the first baffle through the guiding groove.

[0014] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, it further includes:

[0015] The installation chassis is arranged inside the tower barrel;

[0016] The driving gear is rotatably arranged above the installation chassis. The first rotating shaft has a first gear, and the first gear meshes with the driving gear.

[0017] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, the lower end of the second rotating shaft has a second gear that can mesh with the driving gear. The second gear is a semi-gear. The guiding groove includes an axially extending horizontal portion and a vertical portion connected to the horizontal portion. The second rotating shaft is rotatably arranged on the packing member through a torsion spring. The second rotating shaft can be driven by the driving gear to rotate, so as to drive the second baffle to move downwards and approach the first baffle by means of the cooperation between the second clamping post and the guiding groove.

[0018] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, the horizontal projections of the first through holes and the plugs are staggered.

[0019] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, the mounting chassis has an annular accommodating space for receiving and accommodating impurities. An overflow hole is provided on the inner sidewall of the accommodating space, and the overflow hole is used to discharge the liquid in the accommodating space.

[0020] For example, in an energy-saving fractionating tower provided by at least one embodiment of the present invention, a conical guiding platform is provided on the upper end surface of the driving gear. The driving gear has a third through hole penetrating through the guiding platform, and a filter screen is covered on the guiding platform. The filter screen is used to filter impurities and guide the impurities into the accommodating space.

[0021] For example, an energy-saving fractionating tower provided by at least one embodiment of the present invention further includes:

[0022] An elastic member, one end of which is arranged on the first baffle and the other end is arranged on the second baffle. The elastic member is used to elastically lift the second baffle upward so that the second baffle is away from the first baffle.

[0023] The beneficial effects of the embodiments of the present invention are as follows:

[0024] In the present invention, a water storage space is formed through the cooperation of the first baffle and the second baffle, and the soaking and cleaning of the packing member can be realized. Compared with the traditional method of soaking and cleaning the entire fractionating tower, this design only needs to inject an appropriate amount of cleaning liquid into the water storage space to achieve the cleaning purpose, greatly reducing the usage amount of the cleaning liquid and the cleaning cost. Moreover, the cleaning liquid can be more fully in contact with the packing member, improving the cleaning effect and solving the problem of incomplete cleaning in the prior art. The first through holes and the second through holes on the first baffle and the second baffle can ensure gas-liquid contact during normal fractionation, without affecting the normal operation of the fractionating tower, and can be switched to form a water storage space during cleaning, realizing the combination of the fractionation and cleaning functions and improving the practicability of the fractionating tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0026] Figure 1 It is a schematic structural diagram of an energy-saving fractionating tower in an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the second baffle in the embodiment of Figure 1 ;

[0028] Figure 3 Schematic diagram of the structure of the installation chassis in the embodiment of Figure 1 ;

[0029] Figure 4 Schematic diagram of the partial structure of the plug in the embodiment of Figure 1 ;

[0030] Figure 5 Schematic diagram of the partial structure of the spiral guiding groove and the guiding groove in the embodiment of Figure 1 ;

[0031] Figure 6 Schematic diagram of the structure of the first clamping post in the embodiment of Figure 1 ;

[0032] Figure 7 Schematic diagram of the structure of the second clamping post in the embodiment of Figure 1 ;

[0033] Figure 8 Schematic diagram of the structure of the horizontal part in the embodiment of Figure 1 ;

[0034] Figure 9 Schematic diagram of the structure of the tower barrel in the embodiment of Figure 1 ;

[0035] In the figure: 1, tower barrel; 2, packing piece; 3, first baffle; 31, first through hole; 4, second baffle; 41, second through hole; 5, first rotating shaft; 32, first avoiding hole; 33, first clamping post; 51, spiral guiding groove; 42, plug; 6, second rotating shaft; 61, guiding groove; 43, second avoiding hole; 44, second clamping post; 7, installation chassis; 8, driving gear; 52, first gear; 62, second gear; 611, horizontal part; 612, vertical part; 613, inclined guiding surface; 71, accommodating space; 72, overflow hole; 81, guiding platform; 82, third through hole; 9, filter screen; 10, elastic member. Detailed implementation manners

[0036] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0037] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product as a whole. Additionally, for the sake of simplicity and ease of understanding of the drawings, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled. In this document, "one" not only means "only this one", but also can mean "more than one", and "several" includes "two" and "more than two".

[0038] In this document, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "join" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0041] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0042] Such as Figures 1 to 9As shown, it shows an energy-saving fractionating column in an embodiment of the present invention. The energy-saving fractionating column mainly consists of a tower barrel 1, a packing member 2, a first baffle 3 and a second baffle 4. The packing member 2 is arranged inside the tower barrel 1, and its function is to increase the gas-liquid contact area and improve the fractionation efficiency. The first baffle 3 is installed inside the tower barrel 1 and is located below the packing member 2. The outer peripheral wall of the first baffle 3 is slidably matched with the inner wall of the tower barrel 1. There are several first through holes 31 arranged at intervals on the first baffle 3, and these first through holes 31 can allow gas-liquid contact for heat exchange during the normal fractionation process. The second baffle 4 is arranged to be lifted and lowered above the first baffle 3, and there are also several second through holes 41 arranged at intervals on it. The first through holes 31 and the second through holes 41 are arranged in a staggered manner. When it is necessary to soak and clean the packing member 2, by lowering the second baffle 4, the first baffle 3 and the second baffle 4 are made to fit together, so that the first through holes 31 and the second through holes 41 are not connected. At this time, the first baffle 3, the second baffle 4 and the inner wall of the tower barrel 1 jointly form a water storage space, and injecting a cleaning liquid into the water storage space can soak and clean the packing member 2. During normal fractionation operation, the second baffle 4 is lifted, so that the second baffle 4 rises relative to the first baffle 3, making the first through holes 31 and the second through holes 41 communicate, and gas-liquid can pass through the first through holes 31 and the second through holes 41.

[0043] By cooperating the first baffle 3 and the second baffle 4 to form a water storage space, the soaking and cleaning of the packing member 2 can be realized. Compared with the traditional method of soaking and cleaning the entire fractionating column, this design only needs to inject an appropriate amount of cleaning liquid into the water storage space to achieve the cleaning purpose, greatly reducing the usage amount of the cleaning liquid and lowering the cleaning cost. Moreover, it can make the cleaning liquid contact the packing member 2 more fully, improve the cleaning effect, and solve the problem of incomplete cleaning in the prior art. The first through holes 31 and the second through holes 41 on the first baffle 3 and the second baffle 4 can ensure gas-liquid contact during normal fractionation, without affecting the normal operation of the fractionating column, and can be switched to form a water storage space during cleaning, realizing the combination of the fractionation and cleaning functions and improving the practicability of the fractionating column.

[0044] As Figure 1 、 Figure 9As shown, a first baffle 3 is provided below the packing member 2. The outer peripheral wall of the first baffle 3 is attached to the inner wall of the tower barrel 1, and first through holes 31 are distributed and arranged at intervals thereon. There are two first rotating shafts 5, which can limit the first baffle 3 to only move up and down. The first rotating shafts 5 are rotatably arranged on the packing member 2 and below it. The first baffle 3 is provided with a first avoidance hole 32 for the first rotating shaft 5 to pass through. A fixed first clamping post 33 is provided in the first avoidance hole 32, and a spiral guiding groove 51 is provided on the first rotating shaft 5 to cooperate with the first clamping post 33. The first clamping post 33 is embedded in the spiral guiding groove 51. After the first rotating shaft 5 rotates, through the limitation of the first avoidance hole 32 and the spiral guiding groove 51, it can drive the first baffle 3 and the second baffle 4 to synchronously move up and down in the tower barrel 1. After the movement, the water storage space can be located at different positions to clean different positions on the inner wall of the tower barrel 1. The first baffle 3 can only move up and down along the tower barrel 1. The first rotating shaft 5 simultaneously passes through the mounting holes on the second baffle 4. When the first baffle 3 moves up and down along the axis of the first rotating shaft 5, the second baffle 4 moves up and down synchronously, and the first rotating shaft 5 also rotates relative to the mounting holes on the second baffle 4.

[0045] During the rotation of the first rotating shaft 5, relative movement occurs between the groove wall of the spiral guiding groove 51 and the first clamping post 33, causing the first clamping post 33 to move along the trajectory of the spiral guiding groove 51. The trajectory design of the spiral guiding groove 51 enables the first clamping post 33 to be affected by the acting force of the groove wall of the spiral guiding groove 51 when the first rotating shaft 5 rotates, thereby driving the lifting of the first baffle 3.

[0046] In addition, a mounting chassis 7 is provided on the inner wall of the tower barrel 1. A driving gear 8 is rotatably arranged on the mounting chassis 7, and a first gear 52 meshing with the driving gear 8 is provided on the first rotating shaft 5. When it is necessary to drive the first rotating shaft 5 to rotate, the driving gear 8 can be driven to rotate by an external force (the external force is that a motor is arranged outside the tower barrel 1, a gear is connected through a rotating shaft, the rotating shaft drives the gear to rotate, and the gear drives the driving gear 8 to rotate through a linkage member. The rotating shaft and the wall of the tower barrel 1 are rotationally and sealingly connected). The driving gear 8 transmits the power to the first rotating shaft 5 through the meshing relationship with the first gear 52, realizes the rotation of the first rotating shaft 5, and further completes the lifting operation of the first baffle 3.

[0047] The cooperative design of the first rotating shaft 5, the first clamping post 33, and the spiral guiding groove 51 forms a transmission mechanism that converts rotational motion into linear motion. Compared with the complex lifting structures in the prior art, this design is simple and compact. By rotating the first rotating shaft 5, the lifting position of the first baffle 3 can be controlled, which is convenient for the operator to flexibly adjust the position of the water storage space according to the actual cleaning requirements.

[0048] Through the meshing drive between the driving gear 8 and the first gear 52, the rotation of the first rotating shaft 5 can be remotely operated, which is convenient for controlling the first baffle 3 inside the fractionating tower outside the tower, avoiding operators entering the tower for operation, and improving the safety and convenience of operation. At the same time, this transmission method can achieve a large transmission ratio, and the first rotating shaft 5 can be rotated with a small external force, reducing the operation difficulty, and ensuring the stability of the rotation of the first rotating shaft 5, thereby ensuring the precise control of the lifting of the first baffle 3.

[0049] As Figure 2 shown, the second baffle 4 is located above the first baffle 3 and can move up and down on the first baffle 3. There are second through holes 41 and plugs 42 arranged at intervals on the second baffle 4, and the plugs 42 correspond to the first through holes 31 one by one. When the fractionating tower is working normally, the second baffle 4 is in the raised state, the plugs 42 are not inserted into the first through holes 31, and the first through holes 31 and the second through holes 41 are connected, and normal fractionation operation is carried out in the tower barrel 1. When it is necessary to soak and clean the packing member 2, the second baffle 4 is driven to descend. As the second baffle 4 descends, the plugs 42 gradually approach the first through holes 31 and finally are inserted into the first through holes 31 one by one, so that the first through holes 31 and the second through holes 41 are no longer connected. At this time, the first baffle 3, the second baffle 4 and the inner wall of the tower barrel 1 form a water storage space. Then, cleaning liquid is injected into the water storage space, and the cleaning liquid can soak and clean the packing member 2. After the cleaning is completed, the second baffle 4 is driven to rise, the plugs 42 are pulled out from the first through holes 31, and the first through holes 31 and the second through holes 41 are restored to be connected, and the fractionating tower can continue to carry out normal fractionation work.

[0050] For the lifting drive of the second baffle 4, multiple parallel technical solutions can be adopted. One is through a mechanical transmission device, such as a lead screw nut mechanism, where the lead screw is connected to the second baffle 4, and rotating the lead screw can make the second baffle 4 lift and lower along the axial direction of the lead screw; another can adopt a hydraulic or pneumatic device, and the second baffle 4 is driven to lift and lower by the expansion and contraction of a hydraulic cylinder or a pneumatic cylinder.

[0051] The matching design between the plugs 42 on the second baffle 4 and the first through holes 31 enables the fractionating tower to switch between two working modes of fractionation and cleaning. In the fractionation mode, the first through holes 31 and the second through holes 41 are connected, ensuring the flow of gas and liquid and not affecting the normal working efficiency of the fractionating tower. In the cleaning mode, the plugs 42 are inserted into the first through holes 31 to form a closed water storage space, which can effectively prevent the leakage of the cleaning liquid, ensure that the cleaning liquid is concentrated in the water storage space to soak and clean the packing member 2, improve the utilization rate of the cleaning liquid, reduce the waste of the cleaning liquid, and reduce the cleaning cost.

[0052] The structure in which the second baffle 4 can be lifted and lowered makes the formation and release processes of the water storage space simple and direct. By controlling the lifting and lowering of the second baffle 4, the state of the water storage space can be adjusted according to actual cleaning requirements, avoiding the problem of incomplete cleaning caused by uneven distribution or leakage of the cleaning liquid in the traditional cleaning method and improving the cleaning effect.

[0053] As Figure 2 shown, there can also be two second rotating shafts 6, and the second rotating shafts 6 are used to control the lifting and lowering of the second baffle 4. The second rotating shafts 6 are rotatably arranged on the packing member 2 and are located below the packing member 2. There is a second avoidance hole 43 on the second baffle 4, and the second rotating shafts 6 are inserted into the second avoidance hole 43. A second clamping column 44 is arranged in the second avoidance hole 43, a guiding groove 61 is formed on the second rotating shaft 6, and the second clamping column 44 is embedded in the guiding groove 61 and can move along the guiding groove 61. When the second rotating shaft 6 rotates, the groove wall of the guiding groove 61 interacts with the second clamping column 44. Since the second clamping column 44 is fixed in the second avoidance hole 43, as the second rotating shaft 6 rotates, the second clamping column 44 will move along the track of the guiding groove 61. The shape design of the guiding groove 61 enables the movement of the second clamping column 44 to drive the second baffle 4 to move up and down relative to the first baffle 3. The second rotating shafts 6 simultaneously pass through the mounting holes on the first baffle 3. When the second baffle 4 moves up and down along the axis of the second rotating shaft 6, the first baffle 3 moves up and down synchronously, and the second rotating shafts 6 also rotate relative to the mounting holes on the first baffle 3.

[0054] During normal fractionation operation, the second baffle 4 is away from the first baffle 3, and the first through hole 31 and the second through hole 41 are communicated. When soaking cleaning is required, the second rotating shaft 6 is rotated. Through the cooperation of the guiding groove 61 and the second clamping column 44, the second baffle 4 descends and approaches the first baffle 3. At this time, the plug 42 on the second baffle 4 is inserted into the first through hole 31, and the first through hole 31 and the second through hole 41 are not communicated. The first baffle 3, the second baffle 4 and the inner wall of the tower barrel 1 form a water storage space for soaking and cleaning the packing member 2. After the cleaning is completed, the second rotating shaft 6 is rotated in the reverse direction to make the second baffle 4 rise, the plug 42 is pulled out from the first through hole 31, the first through hole 31 and the second through hole 41 are restored to be communicated, and the fractionating tower resumes normal fractionation operation.

[0055] The arrangement of the second rotating shafts 6, the guiding grooves 61 and the second clamping columns 44 drives the lifting and lowering of the second baffle 4. By rotating the second rotating shafts 6, the rotational motion can be converted into the linear lifting and lowering motion of the second baffle 4, facilitating the operator to control the position of the second baffle 4 according to actual requirements. During the cleaning process, the non-communication state of the first through hole 31 and the second through hole 41 is ensured, the sealing performance of the water storage space is guaranteed, the utilization rate of the cleaning liquid is improved, and the waste of the cleaning liquid is reduced. During the fractionation operation, the communication between the first through hole 31 and the second through hole 41 can be quickly restored.

[0056] As Figure 2, Figure 3 As shown in the figure, the mounting chassis 7 is arranged on the inner wall of the tower barrel 1, and the driving gear 8 is rotatably arranged on the mounting chassis 7. A first gear 52 is provided on the first rotating shaft 5, and the first gear 52 meshes with the driving gear 8. When it is necessary to drive the first rotating shaft 5 to rotate to realize the lifting of the first baffle 3, the driving gear 8 can be rotated by an external force. Since the driving gear 8 and the first gear 52 mesh with each other, the rotation of the driving gear 8 will drive the first gear 52 to rotate, and then the first rotating shaft 5 will rotate accordingly. When the first rotating shaft 5 rotates, the spiral guiding groove 51 on its outer peripheral wall cooperates with the first clamping post 33 in the first avoidance hole 32 of the first baffle 3, converting the rotation of the first rotating shaft 5 into the lifting movement of the first baffle 3. In actual operation, it can be in an electric manner, or a motor can be connected to the driving gear 8, and the driving gear 8 is driven to rotate by the rotation of the motor.

[0057] Through the meshing transmission between the driving gear 8 and the first gear 52, the external force can be transmitted to the first rotating shaft 5. Compared with the way of directly rotating the first rotating shaft 5, this transmission structure can be operated outside the tower barrel 1, avoiding the operator from directly contacting the first rotating shaft 5 inside the tower.

[0058] The transmission cooperation between the driving gear 8 and the first gear 52 can realize the amplification or reduction of force. By selecting an appropriate gear transmission ratio according to actual needs, the operation difficulty is reduced. This transmission method can also realize remote operation.

[0059] As Figure 2 shown in the figure, a second gear 62 is arranged on the second rotating shaft 6. The second gear 62 is a semi-gear structure. When the toothed part of the second gear 62 meshes with the driving gear 8, the driving gear 8 drives the second rotating shaft 6 to rotate. When the toothed part of the second gear 62 does not mesh with the driving gear 8, the driving gear 8 cannot drive the second rotating shaft 6 to rotate. The second rotating shaft 6 is rotatably arranged on the packing member 2 through a torsion spring. A guiding groove 61 is opened on the second rotating shaft 6. A second clamping post 44 is arranged in the second avoidance hole 43 of the second baffle 4, and the second clamping post 44 is embedded in the guiding groove 61 and can move along it. When the second clamping post 44 is located at the horizontal part 611, the second gear 62 meshes with the driving gear 8. After the driving gear 8 rotates, it drives the second clamping post 44 to move along the horizontal part 611. When the second clamping post 44 moves to the vertical part 612, the second gear 62 and the driving gear 8 are not meshed, but the driving gear 8 continues to rotate, and the second rotating shaft 6 shows a state of continuous swinging. During the swinging process, the vertical part 612 and the second clamping post 44 will not interfere, and subsequently the second baffle 4 and the first baffle 3 are lifted and lowered synchronously.

[0060] When it is necessary to move the first baffle 3 closer to the second baffle 4 to form a water storage space, a counterclockwise force is applied to the driving gear 8, driving the second rotating shaft 6 to rotate counterclockwise. At this time, the first rotating shaft 5 also rotates counterclockwise, and the first baffle 3 and the second baffle 4 move relative to the first rotating shaft 5 and the second rotating shaft 6. During the rotation of the second rotating shaft 6, the groove wall of the guiding groove 61 interacts with the second engaging post 44. Since the second engaging post 44 is fixed in the second avoiding hole 43, as the second rotating shaft 6 rotates, the second engaging post 44 moves along the guiding groove 61, driving the second baffle 4 to descend and approach the first baffle 3.

[0061] After the cleaning is completed, the driving gear 8 is rotated in the reverse direction. Due to the release of the elastic force of the torsion spring, the second rotating shaft 6 can be driven to rotate in the reverse direction, causing the second baffle 4 to rise, and the plug 42 to be pulled out from the first through hole 31. The first through hole 31 and the second through hole 41 are restored to communication, and the fractionating tower resumes its normal fractionation working state.

[0062] The second rotating shaft 6 adopts a semi-gear structure and is rotationally arranged through a torsion spring. It can be realized that when the first rotating shaft 5 and the second rotating shaft 6 are continuously driven to rotate by the driving gear 8, the first baffle 3 and the second baffle 4 can continuously form a water storage space. Therefore, after the second baffle 4 approaches the first baffle 3, the second baffle 4 will not be able to continue descending. The second rotating shaft 6 rotates driven by the driving gear 8. When the semi-gear cannot mesh with the driving gear 8, the second rotating shaft 6 stops rotating, and the second baffle 4 will also stop descending. When the driving gear 8 rotates in reverse, due to the action of the torsion spring, the semi-gear meshes with the driving gear 8, and the second rotating shaft 6 rotates in the reverse direction driven by the driving gear 8, causing the second baffle 4 to rise away from the first baffle 3.

[0063] As Figures 5 to 8 shown, the guiding groove 61 on the second rotating shaft 6 has a horizontal portion 611 and a vertical portion 612, and the horizontal portion 611 is provided with an inclined guiding surface 613. A second engaging post 44 is arranged in the second avoiding hole 43 on the second baffle 4. The second engaging post 44 is embedded in the guiding groove 61 and can move relative to it.

[0064] When it is necessary to make the second baffle 4 descend and approach the first baffle 3, the second rotating shaft 6 is rotated. In the initial stage, the second engaging post 44 is located in the vertical portion 612 of the guiding groove 61. As the second rotating shaft 6 rotates counterclockwise, when the second engaging post 44 is guided by the inclined guiding surface 613 and moves into the horizontal portion 611, it drives the second baffle 4 to descend. After the second baffle 4 completes its descent and approaches the first baffle 3, the plug 42 on the second baffle 4 is inserted into the first through hole 31 of the first baffle 3. The first baffle 3, the second baffle 4 and the inner wall of the tower barrel 1 form a water storage space for soaking and cleaning the packing member 2.

[0065] After the cleaning is completed, the second rotating shaft 6 is rotated in the reverse direction, and the second clamping post 44 moves reversely along the vertical portion 612 and the horizontal portion 611. The second baffle 4 rises under the corresponding acting force, and the plug 42 is pulled out from the first through hole 31. The first through hole 31 and the second through hole 41 are restored to communication, and the fractionating tower resumes normal fractionation operation.

[0066] The structural design of the horizontal portion 611, the vertical portion 612 and the inclined guiding surface 613 of the guiding groove 61 converts the rotation of the second rotating shaft 6 into the lifting motion of the second baffle 4. This makes the lifting operation of the second baffle 4 more controllable. During the process of rotating the second rotating shaft 6, the operator can predict the motion state of the second baffle 4 through the trajectory of the guiding groove 61 to avoid operation errors. At the same time, this structure reduces the dependence on complex transmission mechanisms. The lifting of the second baffle 4 can be achieved by simply rotating the second rotating shaft 6, reducing the complexity and manufacturing cost of the equipment. When switching between the cleaning mode and the normal working mode of the fractionating tower, the cooperation between the guiding groove 61 and the second clamping post 44 can quickly and reliably adjust the position of the second baffle 4, ensuring both the cleaning effect, reducing the waste of cleaning liquid, and not affecting the normal operation efficiency of the fractionating tower, effectively solving the problems of incomplete cleaning and high cleaning cost in the prior art.

[0067] As Figure 3 shown, the installation chassis 7 is provided with an annular accommodation space 71, and an overflow hole 72 is opened on its inner wall. The accommodation space 71 surrounds the driving gear 8, and the driving gear 8 is rotatably installed in the accommodation space 71 of the installation chassis 7. During the cleaning operation of the fractionating tower, the cleaning liquid may carry impurities into the accommodation space 71; as the liquid accumulates in the accommodation space 71, when the liquid level height exceeds the position of the overflow hole 72, the liquid is discharged into the tower barrel 1 through the overflow hole 72, while the impurities are retained in the accommodation space 71.

[0068] The setting of the annular accommodation space 71 and the overflow hole 72 on the installation chassis 7 provides a collection space for the impurities generated during the operation and cleaning of the fractionating tower. During the cleaning stage, it can prevent the cleaning liquid carrying impurities from flowing disorderly in the tower, preventing the impurities from adhering to the packing member 2 or other component surfaces again and affecting the cleaning effect; during the fractionation stage, it can timely collect the impurities falling in the tower, preventing the impurities from blocking the first through hole 31 and the second through hole 41 and ensuring the gas-liquid flow. The overflow hole 72 ensures that the liquid in the tower will not accumulate in the accommodation space 71, and at the same time enables the impurities to be stably retained in the accommodation space 71, facilitating centralized cleaning, reducing the cleaning difficulty and time cost during the maintenance of the fractionating tower.

[0069] As Figure 1As shown, the upper end surface of the driving gear 8 is provided with a conical guide platform 81, a third through hole 82 is provided on the guide platform 81, and a filter screen 9 is provided on the guide platform 81. During the operation of the fractionating tower, liquid and impurities may fall from above to the driving gear 8. The liquid and impurities first contact the filter screen 9, which filters them and intercepts the impurities. Since the guide platform 81 is a conical structure, the intercepted impurities will slide along the inclined surface of the conical guide platform 81 to the annular accommodation space 71 of the mounting chassis 7 under the action of gravity and the diversion of the liquid. The liquid filtered by the filter screen 9 flows to the bottom through the third through hole 82 on the guide platform 81. When cleaning the fractionating tower, the cleaning liquid carrying impurities will also pass through the filter screen 9, and the filter screen 9 will continue to play a filtering role, guiding the impurities to the accommodation space 71, ensuring that the impurities will not affect other components during the cleaning process.

[0070] The arrangement of the filter screen 9 and the conical guide platform 81 further optimizes the impurity handling function of the fractionation tower. The filter screen 9 can effectively filter impurities in the liquid and prevent the impurities from entering other parts of the fractionation tower as the liquid flows. The design of the conical guide platform 81 allows the impurities intercepted by the filter screen 9 to naturally slide into the accommodating space 71 of the mounting chassis 7, realizing the automatic collection and guidance of impurities, reducing the workload and frequency of manual cleaning, improving the efficiency of the fractionation tower in handling impurities, reducing the risk of equipment failure due to impurities, and extending the service life of the fractionation tower.

[0071] like Figure 4 As shown, an elastic member 10 is arranged between the first baffle plate 3 and the second baffle plate 4. One end of the elastic member 10 is connected to the first baffle plate 3, and the other end is connected to the second baffle plate 4, and the axial direction thereof is consistent with the lifting direction of the second baffle plate 4. In the normal working state of the fractionation tower (the second clamping column 44 is located behind the vertical portion 612), the elastic member 10 is in a naturally stretched state, pushing the second baffle plate 4 away from the first baffle plate 3, so that the second through hole 41 on the second baffle plate 4 is connected to the first through hole 31 on the first baffle plate 3.

[0072] When soaking and cleaning is required (after the second clamping column 44 is clamped into the horizontal part 611), the second baffle 4 is driven to overcome the elastic force of the elastic member 10 and descend until the plug 42 on the second baffle 4 is inserted into the first through hole 31 of the first baffle 3, and the elastic member 10 is compressed. After the cleaning is completed, the driving gear 8 is rotated in the reverse direction so that the second clamping column 44 is located at the vertical part 612, and the elastic member 10 releases the elastic potential energy, elastically lifts the second baffle 4 upward, and restores it to the initial position, the first through hole 31 and the second through hole 41 are reconnected, and the fractionation tower resumes normal fractionation function.

[0073] The setting of the elastic member 10 provides an automatic driving force for the reset of the second baffle 4, simplifying the operation process of the fractionating tower when switching between the cleaning and normal working modes. After the cleaning is completed, without the need for an additional driving mechanism or manual operation, the elastic member 10 can push the second baffle 4 upward to reset, reducing manual intervention and improving the automation degree and working efficiency of the fractionating tower operation.

[0074] The elastic member 10 can continuously provide an upward elastic force for the second baffle 4, ensuring that the second baffle 4 remains at a position away from the first baffle 3 in the normal working state, ensuring the communication state of the first through hole 31 and the second through hole 41, and preventing the normal operation of the fractionating tower from being affected by the accidental drop of the second baffle 4 due to external vibrations or other factors. There is a chamfer at the connection between the horizontal portion 611 and the vertical portion 612, and the chamfer is connected to the inclined guiding surface 613. When the second clamping post 44 is located in the vertical portion 612, it is also at the chamfer, which is also the natural elongation state of the elastic member 10. After the second rotating shaft 6 rotates reversely, the first baffle 3 and the second baffle 4 can be made to approach each other.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An energy-saving fractionating column, characterized in that, Comprising: Tower barrel (1); Packing member (2), arranged inside the tower barrel (1); First baffle (3), arranged inside the tower barrel (1) and located below the packing member (2), the outer peripheral wall of the first baffle (3) is in sliding fit with the inner wall of the tower barrel (1), and a plurality of first through holes (31) arranged at intervals are provided on the first baffle (3); Second baffle (4), slidably arranged along the axial direction of the tower barrel (1) inside the tower barrel (1) and located above the first baffle (3), a plurality of second through holes (41) arranged at intervals are provided on the second baffle (4), the second baffle (4) can move upward relative to the first baffle (3) to communicate the first through holes (31) and the second through holes (41), the second baffle (4) can also move downward relative to the first baffle (3) to block the second through holes (41) by means of the first baffle (3), and a water storage space for soaking and cleaning the packing member (2) is formed above the second baffle (4) inside the tower barrel (1); Installation chassis (7), arranged inside the tower barrel (1), the installation chassis (7) has an annular accommodation space (71) for receiving and accommodating impurities, and an overflow hole (72) is provided on the inner circumferential side wall of the accommodation space (71), and the overflow hole (72) is used for discharging the liquid in the accommodation space (71); Drive gear (8), rotatably arranged above the installation chassis (7), a conical guiding platform (81) is provided on the upper end surface of the drive gear (8), a third through hole (82) penetrating through the guiding platform (81) is provided on the drive gear (8), a filter screen (9) is covered on the guiding platform (81), and the filter screen (9) is used for filtering impurities and guiding the impurities into the accommodation space (71); 2. The energy-saving fractionating column according to claim 1, characterized in that, Further comprising: First rotating shaft (5), rotatably arranged along the axial direction of the tower barrel (1) below the packing member (2), a first avoidance hole (32) for the first rotating shaft (5) to penetrate through is provided on the first baffle (3), the first rotating shaft (5) penetrates through the second baffle (4) and is in rotational fit with the second baffle (4), a first clamping column (33) extending towards the axis side is provided on the inner circumferential wall of the first avoidance hole (32), and a spiral guiding groove (51) slidably matched with the first clamping column (33) is provided on the outer peripheral wall of the first rotating shaft (5), and the first baffle (3) is configured to be able to move up and down along the first rotating shaft (5) under the cooperation of the spiral guiding groove (51) and the first clamping column (33); 3. An energy-saving fractionating column according to claim 2, characterized in that, A plurality of plugs (42) arranged at intervals are provided at the bottom of the second baffle (4), and after the second baffle (4) descends and approaches the first baffle (3), the plugs (42) can be inserted into the first through holes (31) one by one to block the first through holes (31); 4. An energy-saving fractionating column according to claim 3, characterized in that, Further comprising: The second rotating shaft (6) is rotatably arranged below the packing member (2). The second rotating shaft (6) is provided with a guiding groove (61). The second baffle (4) is provided with a second avoiding hole (43). The second rotating shaft (6) is inserted into the second avoiding hole (43), and the second rotating shaft (6) penetrates through the first baffle (3) and is rotatably matched with the first baffle (3). An axially extending second clamping post (44) is provided on the inner peripheral wall of the second avoiding hole (43). The second clamping post (44) is configured to be movable along the guiding groove (61). After the second rotating shaft (6) rotates, it can drive the second baffle (4) to move up and down relative to the first baffle (3) through the guiding groove (61).

5. An energy-saving fractionating column according to claim 4, wherein, Further comprising: The first rotating shaft (5) is provided with a first gear (52), and the first gear (52) meshes with the driving gear (8).

6. An energy-saving fractionating column according to claim 5, characterized in that, The lower end of the second rotating shaft (6) is provided with a second gear (62) capable of meshing with the driving gear (8). The second gear (62) is a semi-gear. The guiding groove (61) includes an axially extending horizontal portion (611) and a vertical portion (612) connected to the horizontal portion (611). The second rotating shaft (6) is rotatably arranged on the packing member (2) through a torsion spring. The second rotating shaft (6) can be driven by the driving gear (8) to rotate, so as to drive the second baffle (4) to move downward close to the first baffle (3) by means of the cooperation between the second clamping post (44) and the guiding groove (61).

7. An energy-saving fractionating column according to claim 4, characterized in that, The horizontal projections of the first through hole (31) and the plug (42) are staggered.

8. An energy-saving fractionating column according to claim 6, characterized in that, Further comprising: An elastic member (10) has one end arranged on the first baffle (3) and the other end arranged on the second baffle (4). The elastic member (10) is used for elastically jacking up the second baffle (4) upward so that the second baffle (4) is away from the first baffle (3).

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