Float valve structure of rectifying tower and air supply structure of float valve structure

Abstract

The utility model belongs to the technical field of rectifying towers, and particularly discloses a rectifying tower float valve structure which comprises a valve bonnet, a valve plate arranged below the valve bonnet, an abutting piece and a sealing piece, a plurality of installation notches are formed in the outer circumferential surface of the valve bonnet, supporting feet are arranged in the installation notches, the valve plate is arranged among the supporting feet in a sliding mode, and the supporting feet are arranged on the valve bonnet. The abutting piece is arranged between the valve bonnet and the valve plate. The abutting piece comprises a fixed piece and a sliding piece, a hollow cavity arranged in the axial direction in a penetrating mode is formed in the fixed piece, and the sliding piece is arranged in the hollow cavity of the fixed piece in a sliding mode. According to the utility model, the length-adjustable contact piece is arranged, the contact position between the bottom of the contact piece and the valve plate is adjusted, the distance between the valve plate and the tower tray is further adjusted, and the amount of gas flowing out from the gaps of the support legs is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of distillation column technology, and in particular to a distillation column float valve structure and its gas supply structure. Background Technology

[0002] The float valve structure of a distillation column is a highly efficient gas-liquid contact device, widely used in petrochemical, chemical separation, and other fields. Its core design involves adjusting the cross-sectional area of ​​the gas passage by raising and lowering the float valve, thereby achieving efficient mass and heat transfer between the gas and liquid phases.

[0003] Float valves are divided into three types: F1 type float valve (circular float valve), V type float valve (strip float valve), and guided float valve. Among them, the F1 type float valve (circular float valve) is the standard float valve. The valve cap is circular and has three feet on the edge to limit the maximum opening.

[0004] The working principle of the float valve is as follows: gas rises from the lower tray and pushes the float valve upward as it passes through the float valve orifice. The opening of the float valve is automatically adjusted according to the gas flow rate.

[0005] However, due to the lack of guidance and intervention in the up-and-down movement of the valve cap, the gas flow rate in the support gap becomes uncontrollable, meaning that the float valve of the distillation column cannot adjust the outflow rate.

[0006] In summary, the existing floating valve structure has the problem of being unable to control the outflow rate through the support gap, which limits the operational flexibility and separation efficiency of the distillation column. Utility Model Content

[0007] This invention provides a floating valve structure for a distillation column, which can solve the problem that the amount of gas flowing out from the support gap in the existing floating valve structure cannot be controlled.

[0008] In a first aspect, this utility model provides a distillation column float valve structure, including a valve cap, a valve plate disposed below the valve cap, an abutment and a sealing element. The outer circumferential surface of the valve cap is provided with multiple mounting notches, and the mounting notches are provided with support feet. The valve plate is slidably disposed between the multiple support feet, and the abutment is disposed between the valve cap and the valve plate.

[0009] The abutting member includes a fixing member and a sliding member. The fixing member has a hollow cavity that extends through the axis, and the sliding member is slidably disposed within the hollow cavity of the fixing member.

[0010] The sealing element includes a fixed seat, a spring slide rod, a connecting plate, and a sealing protrusion arranged sequentially from bottom to top. A spring is fitted on the outside of the spring slide rod, and the two ends of the spring are respectively connected to the fixed seat and the connecting plate. The fixed seat is located in the hollow cavity of the sealing element, and a sliding hole is opened in the center of the top surface of the fixed seat. The spring slide rod is slidably disposed in the sliding hole.

[0011] The valve cap has an air inlet at the position corresponding to the sealing protrusion, which matches the sealing protrusion.

[0012] Furthermore, a recessed groove is provided at the bottom of the valve cap corresponding to the position of the connecting plate, and the outer diameter of the connecting plate is larger than the inner diameter of the recessed groove;

[0013] The sinking trough is connected to the air supply port.

[0014] Furthermore, the depth of the sinking trough is less than the depth of the air inlet.

[0015] Furthermore, a sealing layer is also provided on the top surface of the connecting plate.

[0016] Furthermore, a second sealing layer is provided on the outer wall of the sealing protrusion.

[0017] Furthermore, the support leg is L-shaped.

[0018] Furthermore, the number of the support legs is no less than two.

[0019] Furthermore, the outer circumferential surface of the valve plate is provided with a plurality of slide protrusions corresponding to the position of the support foot, and the support foot is provided with a slide track that cooperates with the slide protrusions;

[0020] The slide block protrusion is slidably disposed within the slide rail.

[0021] Furthermore, the outer wall of the sliding member is provided with a sealing layer three.

[0022] Secondly, this utility model also provides a gas replenishment structure for evacuating or replenishing gas into a distillation column float valve structure provided in the first aspect of this utility model, comprising:

[0023] Gas supply seat;

[0024] A trigger gas supply head is provided on a gas supply base. The trigger gas supply head is connected to the gas supply end of the gas supply base and cooperates with the gas replenishment port.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This invention uses an adjustable-length abutment to adjust the contact position between the bottom of the abutment and the valve plate, thereby further adjusting the distance between the valve plate and the tray and regulating the amount of gas flowing out from the gaps between each support leg. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 A schematic diagram of the structure of the distillation column float valve provided by this utility model;

[0029] Figure 2 A cross-sectional view of the distillation column float valve structure and gas replenishment structure provided by this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Valve cap; 10. Air inlet; 11. Mounting notch; 12. Sinking groove; 2. Support leg; 21. Slide rail; 22. Support leg body; 23. Extension support leg; 3. Valve plate; 4. Contact element; 40. Fixing element; 41. Sliding element; 5. Sealing element; 50. Sealing protrusion; 51. Connecting plate; 52. Fixing seat; 53. Spring slide rod; 54. Spring; 6. Trigger air supply head; 7. L-shaped air supply channel; 71. Vertical air supply channel; 72. Horizontal air supply channel; 8. Air supply seat. Detailed Implementation

[0031] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0032] Firstly, such as Figures 1 to 2 As shown, this utility model provides a distillation column float valve structure, including a valve cap 1, a valve plate 3 disposed below the valve cap 1, an abutment 4 and a sealing member 5. The outer circumferential surface of the valve cap 1 is provided with multiple mounting notches 11, and a support leg 2 is provided in the mounting notch 11. The valve plate 3 is slidably disposed between the multiple support legs 2, and the abutment 4 is disposed between the valve cap 1 and the valve plate 3.

[0033] Among them, the support leg 2 can be fixedly installed in the installation notch 11, and the multiple support legs 2 form an adjustment area with the bottom of the valve cap 1. The valve plate 3 is located in the adjustment area and is slidably arranged between the multiple support legs 2. The abutment 4 is arranged between the valve cap 1 and the valve plate 3, and the top of the abutment 4 is connected to the bottom of the valve cap 1. In addition, the sealing member 5 is arranged in the abutment 4.

[0034] Specifically, the abutment 4 includes a fixing member 40 and a sliding member 41. The fixing member 40 has a hollow cavity that runs through it along the axial direction. The sliding member 41 is slidably disposed in the hollow cavity of the fixing member 40. The fixing member 40 has an annular structure, and its top can be fixedly connected to the bottom of the valve cap 1. The sliding member 41 is fitted into the hollow cavity of the fixing member 40 and can slide up and down in the hollow cavity of the fixing member 40.

[0035] The sealing element 5 includes a fixed seat 52, a spring slide rod 53, a connecting plate 51 and a sealing protrusion 50 arranged sequentially from bottom to top. A spring 54 is fitted on the outside of the spring slide rod 53. The two ends of the spring 54 are connected to the fixed seat 52 and the connecting plate 51 respectively. The fixed seat 52 is located in the hollow cavity of the fixing element 40. A sliding hole is opened in the center of the top surface of the fixed seat 52, and the spring slide rod 53 is slidably disposed in the sliding hole.

[0036] An air inlet 10 is provided on the valve cap 1 at the position corresponding to the sealing protrusion 50, which is in conjunction with the sealing protrusion 50;

[0037] In the sealing element 5, the fixing seat 52 is located in the hollow cavity of the fixing element 40. Specifically, both ends of the fixing seat 52 extend to the inner wall of the hollow cavity of the fixing element 40, so that both ends of the fixing seat 52 can be fixedly installed in the hollow cavity of the fixing element 40. A sliding hole is provided in the center of the top of the fixing seat 53 to accommodate the spring slide rod 53. The spring slide rod 53 is slidably installed in the sliding hole, that is, the spring slide rod 53 can rise and fall in the sliding hole. The top of the spring slide rod 53 can be fixedly connected to the connecting plate 51, and the sealing protrusion 50 is fixedly provided on the top of the connecting plate 51. In addition, both ends of the spring 54 are respectively connected to the fixing seat 52 and the connecting plate 51. Under the action of the spring 54, the top of the connecting plate 51 is tightly attached to the bottom of the valve cap 1 to block the air inlet 10.

[0038] In addition, the sealing protrusion 50 is fixedly disposed on the top of the connecting plate 51, and this fixing method can be welding or integral molding.

[0039] Because of the presence of the contact element 4, which is located between the valve cap 1 and the valve plate 3, when the valve plate 3 is lifted, the top of the valve plate 3 can contact the bottom of the contact element 4. After adjusting the length of the contact element 4, the contact distance between the bottom of the contact element 4 and the valve plate 3 can be adjusted.

[0040] In actual installation, the distillation column float valve structure can be installed on the tray at the position corresponding to the float valve hole. In the initial state, since the valve plate 3 can slide vertically on the support 2, under the action of gravity, the valve plate 3 can fall on the top of the float valve hole, thus blocking the float valve hole. When the gas flow passes through, it lifts the valve plate 3. Compared with the prior art, which installs the float valve in the float valve hole on the tray, the distillation column float valve structure provided by this utility model is installed on the top of the tray at the position corresponding to the float valve hole, so that in the initial state, the valve plate 3 can fall on the top of the float valve hole, thus blocking the float valve hole.

[0041] Based on the structural arrangement of the fixed member 40 and the sliding member 41, the final position of the sliding member 41 can be adjusted to control the position of the valve plate 3 after it abuts against the sliding member 41.

[0042] like Figures 1 to 2As shown, in some embodiments of this utility model, an outer edge sliding seat is provided at the upper end of the outer wall of the sliding member 41, and a mounting ring seat is provided at the bottom of the inner wall of the fixing member 40; wherein, the outer diameter of the outer edge sliding seat is adapted to the inner diameter of the fixing member 40, and the inner diameter of the mounting ring seat is adapted to the outer diameter of the sliding member 41. With this arrangement, the sliding member 41 and the fixing member 40 will not separate. That is, when the top of the sliding member 41 falls to the bottom of the fixing member 40, due to the restriction of the outer edge sliding seat and the mounting ring seat, the outer edge sliding seat will fall to the top of the mounting ring seat, thereby ensuring that the sliding member 41 and the fixing member 40 will not separate, that is, preventing the sliding member 41 from sliding away from the fixing member 40.

[0043] like Figures 1 to 2 As shown, in some embodiments of this utility model, the outer wall of the sliding member 41 is provided with a sealing layer three;

[0044] To ensure sealing during sliding, the outer wall of the sliding member 41 is provided with a sealing layer three. Specifically, the sealing layer three is provided on the outer wall of the outer edge ring slide seat.

[0045] The third sealing layer can be a rubber sealing layer.

[0046] like Figures 1 to 2 As shown, in some embodiments of this utility model, a recessed groove 12 is provided at the bottom of the valve cap 1 corresponding to the position of the connecting plate 51, and the outer diameter of the connecting plate 51 is larger than the inner diameter of the recessed groove 12.

[0047] The sink trough 12 is connected to the air inlet 10;

[0048] This structure creates an effective double seal. Specifically, the sealing protrusion 50, with its precise fit with the air supply port 10, forms the core sealing interface, effectively preventing gas leakage in non-air supply states. Furthermore, the outer diameter of the connecting plate 51 is larger than the inner diameter of the sinking groove 12. When the top of the connecting plate 51 is tightly fitted against the bottom surface of the valve cap 1, its surface can completely cover and seal the opening of the sinking groove 12. This forms an additional, larger sealing barrier, significantly enhancing the overall sealing reliability, especially providing extra protection when there are internal pressure fluctuations or slight wear on the sealing protrusion 50.

[0049] A recessed groove 12 is provided. After the sealing protrusion 50 is disengaged from the air inlet 10 and located in the recessed groove 12, the air inlet 10 is connected to the hollow cavity of the fixing member 40 to facilitate the inflow of gas.

[0050] If the outer diameter of the connecting plate 51 is larger than the inner diameter of the sinking groove 12, then when the top of the connecting plate 51 is in contact with the bottom surface of the valve cap 1, the connecting plate 51 will block the sinking groove, further ensuring the sealing performance.

[0051] This design employs a double-sealing system: a precise fit between the sealing protrusion and the air inlet, along with a connecting plate covering the recessed groove. This provides exceptional sealing performance in the closed state, effectively preventing gas leakage. Simultaneously, the recessed groove 12 serves as a crucial transition channel connecting the air inlet 10 and the fixing element 40 within the hollow cavity. When the connecting plate 51 moves downwards, it naturally releases the seal on the recessed groove 12, ensuring a smooth, direct, and efficient gas flow path in the open state. The design of the connecting plate 51 having an outer diameter larger than the inner diameter of the recessed groove 12 is key to ensuring reliable sealing of the recessed groove 12 in the sealed state. The overall structure is ingenious and simple, with clear and reliable state switching, significantly improving its performance in sealing and controllable air inlet.

[0052] like Figures 1 to 2 As shown, in some embodiments of this utility model, the depth of the sink trough 12 is less than the depth of the air inlet 10.

[0053] The depth of the recessed groove 12 is less than the depth of the air inlet 10, which facilitates the communication between the gas and the hollow cavity inside the fixing member 40 through the recessed groove 12. Specifically, the shallow depth of the recessed groove 12 means that when the sealing protrusion 50 leaves the air inlet 10 and enters the recessed groove 12, the gas only needs a very short stroke to diffuse from the air inlet 10 to the entire space of the recessed groove 12. The shallow groove structure makes the cross-sectional area of ​​the recessed groove 12 closer to the opening area of ​​the air inlet 10, avoiding the "bottleneck effect" caused by the deep groove. That is, when replenishing gas, the gas can quickly fill the recessed groove 12 and smoothly enter the hollow cavity of the fixing member 40 through its side wall / bottom gap.

[0054] like Figures 1 to 2 As shown, in some embodiments of this utility model, the top surface of the connecting plate 51 is also provided with a sealing layer; to further enhance the sealing performance when the connecting plate 51 is in contact with the valve cap 1.

[0055] The sealing layer can be a rubber sealing layer; the rubber sealing layer has elastic deformation characteristics, which can adaptively fill the micro-processing textures or uneven areas between the top surface of the connecting disc 51 and the bottom surface of the valve cap 1, and completely eliminate the micro-leakage channels that are difficult to avoid with hard seals.

[0056] When the connecting disc 51 is pressed upward, the rubber sealing layer undergoes greater deformation, achieving an adaptive sealing effect of "the more it is pressed, the tighter it becomes";

[0057] In addition, the rubber sealing layer absorbs mechanical vibration energy, preventing the connecting disc 51 from momentarily separating from the bottom surface of the valve cap 1 due to high-frequency vibration.

[0058] like Figures 1 to 2 As shown, in some embodiments of this utility model, a second sealing layer is provided on the outer wall of the sealing protrusion 50; to ensure the sealing between the sealing protrusion 50 and the air inlet 10 after the sealing protrusion 50 is placed inside the air inlet 10.

[0059] The second sealing layer can be a rubber sealing layer.

[0060] like Figures 1 to 2 As shown, in some embodiments of this utility model, the support leg 2 is L-shaped;

[0061] Specifically, the support leg 2 includes a support body 22 and an extension leg 23, wherein the support body 22 and the extension leg 23 are perpendicular to each other, that is, the support body 22 and the extension leg 23 are vertically connected to form an L-shape. Specifically, one end of the support body 22 is located in the mounting notch 11, and the other end of the support body 22 is connected to the extension leg 23; and the extension leg 23 is located on the side of the support body 22 away from the valve plate 3.

[0062] The distillation column is equipped with L-shaped support legs 2 to facilitate the installation of the floating valve structure.

[0063] like Figures 1 to 2 As shown, in some embodiments of this utility model, the number of legs 2 is not less than two;

[0064] The number of legs 2 can be designed according to the actual working conditions, and the preferred number of legs 2 is 6.

[0065] like Figures 1 to 2 As shown, in some embodiments of this utility model, the outer circumferential surface of the valve plate 3 is provided with a plurality of slide protrusions corresponding to the position of the support leg 2, and the support leg 2 is provided with a slide track 21 that cooperates with the slide protrusions.

[0066] The slide block protrudes and is slidably disposed within the slide rail 21;

[0067] The sliding seat protrusion and the slide 21 are designed to cooperate to ensure that the valve plate 3 slides vertically on the support leg 2. At the same time, in the initial state, the valve plate 3 falls on the top of the float valve hole under the action of gravity. When the airflow passes through, it lifts the valve plate 3.

[0068] like Figures 1 to 2 As shown, this utility model also provides a gas replenishment structure for evacuating or replenishing gas into a distillation column float valve structure provided in the first aspect of this utility model. Specifically, it connects external gas to the hollow cavity inside the fixed member 40, adjusts the gas volume within the hollow cavity of the fixed member 40, and controls the maximum upward movement distance of the sliding member 41, thereby controlling the position of the valve plate 3 after it contacts the sliding member 41. This gas replenishment structure includes:

[0069] The gas supply base 8 and a plurality of trigger gas supply heads 6 disposed on the gas supply base 8, specifically, the trigger gas supply heads 6 are connected to the gas supply end of the gas supply base 8;

[0070] In addition, an L-shaped air supply channel 7 is provided inside the trigger air supply head 6. The L-shaped air supply channel 7 includes a vertical air supply channel 71 and a horizontal air supply channel 72 that are perpendicular to each other. The vertical air supply channel 71 and the horizontal air supply channel 72 are connected and arranged in a manner. The end of the vertical air supply channel 71 that is away from the horizontal air supply channel 72 is connected to the air supply seat 8. In addition, the end of the horizontal air supply channel 72 that is away from the vertical air supply channel 71 is located on the side of the trigger air supply head 6. Specifically, the end of the horizontal air supply channel 72 that is away from the vertical air supply channel 71 is located on the side of the trigger air supply head 6 that is close to the outer side of the air supply seat 8.

[0071] The air inlet of the air supply seat 8 is connected to an external suction device. Specifically, the air inlet of the air supply seat 8 is connected to an external suction device through an external air supply pipe, wherein the suction device is preferably an air pump.

[0072] The working principle of the air supply structure is as follows: When the trigger air supply head 6 touches the sealing protrusion 50, it continues to press down. By pressing down the trigger air supply head 6, the sealing protrusion 50 is disengaged from the air supply port 10 until the trigger air supply head 6 is located inside the air supply port 10. The outer diameter of the trigger air supply head 6 is matched with the inner diameter of the air supply port 10, and the length of the trigger air supply head 6 is greater than the length of the air supply port 10. The horizontal air supply end (i.e., the transverse air supply channel 72) of the L-shaped air supply channel 7 is aligned with the sinker 12. In this way, the external suction device of the air supply seat 8 controls the amount of gas in the hollow cavity inside the fixed part 40 through the L-shaped air supply channel 7, controls the maximum distance of the sliding part 41 to move up or down, and thus controls the position of the valve plate 3 after it touches the sliding part 41.

[0073] like Figures 1 to 2 As shown, in some embodiments of this utility model, the gas supply seat 8 can be installed near the floating valve structure of the distillation column. Specifically, the gas supply seat 8 can be installed on a mounting frame, that is, a mounting frame is set outside the gas supply seat 8, and a driving component is set below the mounting frame. The driving component drives the gas supply seat 8 to rise and fall, triggering the gas supply head 6 to move accordingly, thereby achieving the purpose of connecting or moving away from the gas supply structure and the floating valve structure of the distillation column.

[0074] In addition, the driving component can be an electrically driven component such as a cylinder. It should be noted that the specific model and specifications of the suction device and the electrically driven component need to be selected and determined according to the actual specifications of the gas replenishment structure and the floating valve structure of the distillation column. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0075] This utility model provides a distillation column float valve structure and its gas supply structure. By setting an adjustable-length abutment member, the contact position between the bottom of the abutment member and the valve plate can be adjusted, further adjusting the distance between the valve plate and the column tray, and adjusting the amount of gas flowing out from the gaps between each support.

[0076] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A distillation column float valve structure, characterized in that, The valve includes a valve cap (1), a valve plate (3) located below the valve cap (1), an abutment (4), and a seal (5). The outer circumferential surface of the valve cap (1) is provided with multiple mounting notches (11), and the mounting notches (11) are provided with support feet (2). The valve plate (3) is slidably disposed between the multiple support feet (2), and the abutment (4) is disposed between the valve cap (1) and the valve plate (3). The contacting member (4) includes a fixing member (40) and a sliding member (41). The fixing member (40) has a hollow cavity that runs through it along the axial direction. The sliding member (41) is slidably disposed in the hollow cavity of the fixing member (40). The sealing element (5) includes a fixed seat (52), a spring slide rod (53), a connecting plate (51), and a sealing protrusion (50) arranged sequentially from bottom to top. The spring slide rod (53) is fitted with a spring (54). The two ends of the spring (54) are respectively connected to the fixed seat (52) and the connecting plate (51). The fixed seat (52) is located in the hollow cavity of the fixing element (40). A sliding hole is provided in the center of the top surface of the fixed seat (52). The spring slide rod (53) is slidably disposed in the sliding hole. The valve cap (1) has an air inlet (10) at the position corresponding to the sealing protrusion (50) to cooperate with the sealing protrusion (50).

2. The distillation column float valve structure according to claim 1, characterized in that, The valve cap (1) has a recessed groove (12) at the bottom corresponding to the position of the connecting plate (51), and the outer diameter of the connecting plate (51) is larger than the inner diameter of the recessed groove (12); The sinking trough (12) is connected to the air supply port (10).

3. The distillation column float valve structure according to claim 2, characterized in that, The depth of the sinking trough (12) is less than the depth of the air inlet (10).

4. The distillation column float valve structure according to claim 1, characterized in that, The top surface of the connecting plate (51) is also provided with a sealing layer.

5. The distillation column float valve structure according to claim 1, characterized in that, A second sealing layer is provided on the outer wall of the sealing protrusion (50).

6. The distillation column float valve structure according to claim 1, characterized in that, The support leg (2) is L-shaped.

7. The distillation column float valve structure according to claim 1, characterized in that, The number of the support legs (2) shall not be less than two.

8. The distillation column float valve structure according to claim 1, characterized in that, The outer circumferential surface of the valve plate (3) is provided with multiple sliding protrusions corresponding to the position of the support leg (2), and the support leg (2) is provided with a slide (21) that cooperates with the sliding protrusions; The slide block protrusion is slidably disposed within the slide rail (21).

9. The distillation column float valve structure according to claim 1, characterized in that, The outer wall of the sliding member (41) is provided with a sealing layer three.

10. A gas-replenishing structure, characterized in that, For evacuating or replenishing gas into the distillation column float valve structure according to any one of claims 1-9, comprising: Gas supply seat (8); A trigger gas supply head (6) is provided on a gas supply seat (8). The trigger gas supply head (6) is connected to the gas supply end of the gas supply seat (8). The trigger gas supply head (6) is in conjunction with the gas replenishment port (10).

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