Gas-liquid separation device

Abstract

The invention relates to a gas-liquid separation device, and belongs to the technical field of gas-liquid separation. The top end of the barrel is provided with a mixture inlet used for allowing a gas-liquid mixture to enter, the bottom end of the barrel is provided with a liquid outlet, the top of the side wall of the barrel is further provided with a gas outlet, the barrel is internally provided with a first cylinder, a second cylinder and a third cylinder which are coaxially arranged in a sleeved mode from inside to outside, and the outer diameter of the third cylinder is smaller than that of a vertical cylinder; a rotatable central shaft is coaxially arranged in the cylinder I in a penetrating manner, a channel I is formed in an area between the central shaft and the cylinder I, a channel II is formed in an area between the cylinder I and the cylinder II, a channel III is formed in an area between the cylinder II and the cylinder III, the top end of the channel I is communicated with the mixture inlet, and the bottom end of the channel I is communicated with the bottom end of the channel II; the top end of the second channel is communicated with the top end of the third channel, the bottom end of the third channel is communicated with the liquid outlet, and the bottom of the second cylinder is provided with a liquid drainage part communicated with the liquid outlet. The gas-liquid separator can enhance the gas-liquid separation effect and is easy to clean.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-liquid separation, and particularly to a gas-liquid separation device. Background Art

[0002] A vacuum pump is a mechanical device used to extract gas molecules from a closed container or system, thereby establishing, maintaining, or improving a vacuum environment. It is the core equipment of vacuum technology and is widely used in industries such as industry, scientific research, medical treatment, semiconductors, and food packaging. In systems involving steam, solvents, or high-humidity environments, the gas often contains tiny liquids. Due to the incompressibility of liquids, if these tiny liquids enter the vacuum pump, they will cause hydraulic shock to the precision mechanical components inside the vacuum pump, resulting in severe vibration of the vacuum pump, damaging the impeller or bearing. Therefore, a gas-liquid separation device is usually installed at the inlet of the vacuum pump, and the gas-liquid separation device can effectively separate the liquid from the gas-liquid mixture to ensure the safe and reliable operation of the vacuum pump.

[0003] A common gas-liquid separation method is centrifugal separation, which means making the gas-liquid mixture rotate at a high speed to generate a strong centrifugal force, so that the heavier liquid droplets are thrown towards the wall and fall along the wall. For example, a gas-liquid separation device disclosed in a patent with the authorized announcement number CN115475452B includes a first separation cylinder, a second separation cylinder, an inner conical cylinder, an input pipeline, a shunt assembly, a liquid output pipeline, and a gas output pipeline; a first spiral plate is arranged between the first separation cylinder and the second separation cylinder; a second spiral plate is arranged between the second separation cylinder and the inner conical cylinder; the spiral directions of the first spiral plate and the second spiral plate are opposite; the input pipeline sequentially penetrates through the first separation cylinder and the second separation cylinder; the shunt assembly is arranged inside the input pipeline; the liquid output pipeline and the gas output pipeline are arranged at the bottom end and the top end of the first separation cylinder.

[0004] When this gas-liquid separation device is in use, the gas-liquid mixture is input through the input pipeline and flows spirally through the first spiral plate and the second spiral plate, and gas-liquid separation is carried out during the flow. However, in this device, the gas-liquid mixture passes through the first spiral plate and the second spiral plate transiently, with a short centrifugation time and poor gas-liquid separation effect. Moreover, the interiors of the first spiral plate, the second spiral plate, the first separation cylinder, and the second separation cylinder in this device are difficult to clean, and impurities are likely to accumulate after long-term use, affecting the purity of the separated gas and liquid. Summary of the Invention

[0005] The present invention provides a gas-liquid separation device to solve the technical problems of the weak separation effect and difficult internal cleaning of the existing gas-liquid separation devices.

[0006] To solve the above problems, a gas-liquid separation device provided by the present invention adopts the following technical solutions: A gas-liquid separation device includes a cylinder, a mixture inlet for supplying a gas-liquid mixture to the top of the cylinder, a liquid outlet at the bottom, and a gas outlet at the top of the side wall of the cylinder. Cylinders 1, 2, and 3 are coaxially arranged from the inside to the outside of the cylinder, the outer diameter of the cylinder 3 is smaller than the outer diameter of the vertical cylinder, a rotatable central shaft is coaxially passed through the cylinder 1, the area between the central shaft and the cylinder 1 forms a channel 1, the area between the cylinder 1 and the cylinder 2 forms a channel 2, and the area between the cylinder 2 and the cylinder 3 forms a channel 3. The top of the channel 1 is connected to the mixture inlet. The bottom end of channel one is connected with the bottom end of channel two, the top end of channel two is connected with the top end of channel three, the bottom end of channel three is connected with the liquid outlet, and the bottom of cylinder two is provided with a drainage portion connected with the liquid outlet; spiral blade one, spiral blade two and spiral blade three are respectively provided in channel one, channel two and channel three, spiral blade one is fixedly sleeved on the outside of the central axis, and the outer end contacts the inner wall of cylinder one, spiral blade two is rotatably sleeved on the outside of cylinder one, and the outer end contacts the inner wall of cylinder two, spiral blade three is rotatably sleeved on the outside of cylinder two, and the outer end contacts the inner wall of cylinder three.

[0007] The above technical solution is adopted, by arranging coaxially sleeved cylinders 1, 2, and 3 in the vertical cylinder, separating channels 1, 2, and 3, and arranging spiral blades in each channel, so that the gas-liquid mixture can flow in a spiral through channels 1, 2, and 3, which is equivalent to extending the flow path of the gas-liquid mixture without changing the height of the equipment, and can enhance the gas-liquid separation effect. At the same time, the spiral blades can rotate. When the equipment needs to be cleaned after long-term use, the liquid outlet at the bottom of the vertical cylinder can be blocked, and cleaning liquid can be injected into the vertical cylinder through the mixture inlet. Then, the spiral blades can be rotated. The rotating spiral blades can scrape impurities on the side walls of the cylindrical cylinder. At the same time, the rotating spiral blades and the cleaning liquid collide with each other, which can achieve self-cleaning of the spiral blades. Compared with the existing technology, it is more convenient to clean the interior of the equipment.

[0008] Furthermore, a rotary drive mechanism is installed on the top of the cylinder, which is connected to the central shaft for driving the central shaft to rotate. The bottom end of the central shaft is connected to the bottom end of spiral blade two by connecting piece one, and the top end of spiral blade two is connected to the top end of spiral blade three by connecting piece two. When the central shaft is driven to rotate, it can drive spiral blade one, spiral blade two and spiral blade three to rotate synchronously.

[0009] By adopting the above technical solution, the rotary drive mechanism can simultaneously drive spiral blade one, spiral blade two and spiral blade three to rotate, without having to set up a separate drive structure for driving each spiral blade to rotate. There are fewer power elements and the structure is simpler.

[0010] Further, the liquid discharging part includes a liquid collecting hopper and a horizontal circular plate. The liquid collecting hopper is in an inverted conical shape and is connected to the bottom of the second cylinder. A liquid discharging pipeline is connected to the bottom end of the liquid collecting hopper, and a first valve is installed in the liquid discharging pipeline. The horizontal circular plate is arranged in the liquid collecting hopper, and its periphery can be pressed against the inner side wall of the liquid collecting hopper. A liquid discharging hole penetrating up and down is provided in the middle of the horizontal circular plate.

[0011] With the above technical solution, the liquid separated in the first channel and the second channel falls into the liquid collecting hopper through the liquid discharging holes on the horizontal circular plate. Due to the shielding of the horizontal circular plate, the liquid in the liquid collecting hopper will not directly contact a large amount of the gas-liquid mixture flowing from the first channel to the second channel, avoiding affecting the gas-liquid separation effect. A first valve is installed in the liquid discharging pipeline. The first valve can block the liquid discharging pipeline to prevent the gas-liquid mixture from flowing out through the liquid discharging pipeline. The first valve can be opened when the liquid in the liquid collecting hopper reaches a set amount to achieve regular liquid discharging.

[0012] Further, a liquid baffle cover is also installed on the horizontal circular plate. The liquid baffle cover covers the upper part of the liquid discharging hole, and there is a gap for the liquid to flow in between the liquid baffle cover and the horizontal circular plate. A liquid collecting column in an inverted conical shape is installed on the inner side wall of the top of the liquid baffle cover, and the bottom end of the liquid collecting column is arranged directly above the liquid discharging hole facing the liquid discharging hole.

[0013] With the above technical solution, the liquid baffle cover shields the liquid discharging hole and blocks the liquid in the liquid collecting hopper from moving upward by the flowing gas-liquid mixture through the liquid discharging hole, avoiding some liquid from being remixed into the gas-liquid mixture and affecting the gas-liquid separation effect. The liquid collecting column can recollect the carried-out liquid, causing the liquid to converge at the bottom and flow towards the liquid discharging hole.

[0014] Further, the horizontal circular plate is installed in the liquid collecting hopper in a vertically guided and sliding manner. The outer diameter of the horizontal circular plate is smaller than the outer diameter of the second cylinder. A connecting plate is connected above the liquid baffle cover. A through hole is provided on the connecting plate, and inserting blocks are provided on the hole wall of the through hole. The bottom end of the central shaft is coaxially connected with a threaded shaft section. Thread grooves are provided on the outer side wall of the threaded shaft section, and an annular groove located at the top end of the thread groove and communicating with the thread groove is also provided. The connecting plate is sleeved outside the threaded shaft section through the through hole, and the inserting blocks are inserted into the thread grooves.

[0015] With the above technical solution, during the cleaning process of the equipment, the rotation of the central shaft can drive the rotation of the threaded shaft section. When the threaded shaft section rotates, it can drive the connecting plate and the horizontal circular plate connected below the connecting plate to move upward. After the horizontal circular plate moves upward, a gap is formed between its outer periphery and the inner side wall of the liquid collecting hopper, which can allow the impurities scraped off by the spiral blades to pass through, avoiding the problem that the impurities can only pass through the liquid discharging hole and easily cause blockage. The annular groove is provided at the top of the thread groove because the central shaft needs to rotate for a long time. After the connecting plate is driven by the thread groove to move upward, the inserting blocks are inserted into the annular groove and continuously rotate in the annular groove to avoid getting stuck.

[0016] Further, the bottom of the cylinder body is a collecting section in an inverted conical shape. The liquid outlet is arranged at the bottom end of the collecting section. A liquid discharge pipe is connected to the liquid outlet. A second valve is installed in the liquid discharge pipe. The bottom end of the liquid discharge channel is connected to a liquid blocking ring plate in an umbrella shape. There is a gap between the outer periphery of the liquid blocking ring plate and the inner side wall of the collecting section for the liquid to flow towards the liquid outlet.

[0017] With the above technical solution, a second valve is installed at the liquid outlet. The second valve is in a closed state during the gas-liquid separation process to prevent the gas-liquid mixture from being discharged from the liquid outlet. By regularly opening the second valve, the liquid accumulated in the collecting section can be discharged from the liquid outlet. The liquid blocking ring plate can block the liquid accumulated at the bottom of the collecting section to prevent the flowing gas-liquid mixture from directly contacting the liquid at the bottom of the collecting section.

[0018] Further, there is an annular wire mesh demisting mechanism between the top of the cylinder body and the top of the third cylinder. The wire mesh demisting mechanism is located below the gas outlet and can be detachably installed in the vertical cylinder.

[0019] With the above technical solution, after the gas-liquid mixture is separated by the first channel, the second channel and the third channel, the obtained gas still contains a small amount of liquid. During the upward movement of this part of the gas, passing through the wire mesh demisting mechanism, the liquid can be separated from the gas, and finally the clean gas is discharged from the gas outlet, achieving better gas-liquid separation effect. The wire mesh demisting structure is detachable, which is convenient for cleaning or replacement.

[0020] Further, the wire mesh demisting mechanism includes two semi-circular wire mesh demisters. The wire mesh demisters are connected with plug-ins. There is an annular slot on the outer side wall of the third cylinder. The plug-ins on the two wire mesh demisters are inserted into the slot. There is an insertion opening on the outer side wall of the vertical cylinder. One end of the insertion opening is provided with a positioning plate. The positioning plate is located inside the vertical cylinder and is clamped between the ends where one side of the two wire mesh demisters is joined. There is a sealing component on the outer side of the cylinder body, and the sealing component can seal the insertion opening.

[0021] With the above technical solution, when installing the wire mesh demisting mechanism, first insert one section of the wire mesh demister through the insertion opening between the vertical cylinder and the third cylinder, and insert the plug-in into the slot to realize the positioning of the wire mesh demister in the vertical direction. Then, the wire mesh demister can be rotated until it contacts the positioning plate. Then, insert the other wire mesh demister through the insertion opening between the vertical cylinder and the third cylinder, and at the same time insert the plug-in into the slot. At this time, the two wire mesh demisters have formed a ring and are sleeved on the outer side of the third cylinder. Due to the setting of the positioning plate, the two wire mesh demisters will not rotate, and during the subsequent gas-liquid separation process, the wire mesh demisters will not generate large vibrations, which is beneficial to maintaining the structural stability of the wire mesh demisters.

[0022] Further, the plugging assembly includes a first plugging member and a second plugging member. The first plugging member includes a first arc-shaped plugging plate and two ear plates connected to both ends of the first arc-shaped plugging plate. The second plugging member includes a second arc-shaped plugging plate and two ear plates connected to both ends of the second arc-shaped plugging plate. The first arc-shaped plugging plate and the second arc-shaped plugging plate are oppositely buckled on the outer side of the vertical cylinder and cover the insertion port. There is a gap between the ear plates of the first plugging member and the ear plates of the second plugging member, and they are connected by connecting bolts, so that the first arc-shaped plugging plate and the second arc-shaped plugging plate are pressed tightly on the vertical cylinder.

[0023] Further, the first arc-shaped plugging plate faces the insertion port, and an arc-shaped cushion block is connected to the inner side of the first arc-shaped plugging plate. The arc-shaped cushion block can pass through the insertion port and press tightly on the wire mesh demister.

[0024] With the above technical solution, the arc-shaped cushion block presses tightly on the wire mesh demister, so that the wire mesh demister presses tightly on the vertical cylinder, further enhancing the positioning effect of the wire mesh demister and preventing the wire mesh demister from shaking.

[0025] The beneficial effects of the gas-liquid separation device provided by the present invention are as follows: By providing a first channel, a second channel, and a third channel that are sequentially connected and arranging spiral blades in each channel to perform centrifugal separation on the gas-liquid mixture, the flow path of the gas-liquid mixture is extended, enhancing the gas-liquid separation effect. By driving the rotation of each spiral blade, it is convenient to clean the inside of the vertical cylinder. By adding a wire mesh demisting mechanism, the liquid substances in the discharged gas can be better removed. The wire mesh demisting mechanism is arranged in a structure of two semi-circular wire mesh demisters spliced together, which is convenient for installing and disassembling the wire mesh demisting mechanism to clean the wire mesh demisting mechanism regularly. Description of the Drawings

[0026] Figure 1 Is the front view of a gas-liquid separation device provided by the present invention; Figure 2 Is the left view of a gas-liquid separation device provided by the present invention; Figure 3 Is Figure 2 The cross-sectional view after removing the structure inside the third cylinder at the A-A position in Figure 4 Is the cross-sectional view of a gas-liquid separation device provided by the present invention; Figure 5 Is Figure 4 The enlarged schematic view of the structure at position B in Figure 6 Is the three-dimensional cross-sectional view of a gas-liquid separation device provided by the present invention; Figure 7 Is Figure 6 The enlarged schematic view of the structure at position C in Figure 8 Is the front view of the vertical cylinder in a gas-liquid separation device provided by the present invention; Figure 9 The left view of the vertical cylinder in a gas-liquid separation device provided by the present invention; Figure 10 The front view of the third cylinder and the wire mesh demisting mechanism in a gas-liquid separation device provided by the present invention.

[0027] Explanation of the reference numerals: 1. Driving motor; 2. Support frame; 201. Support plate; 3. Inlet cylinder; 4. Inlet pipe; 5. Outlet pipe; 6. Vertical cylinder; 601. Straight cylinder section; 602. Collection section; 603. Insertion port; 7. Sealing member one; 701. Ear plate one; 702. Arc-shaped cushion block; 8. Sealing member two; 801. Ear plate two; 9. Connecting bolt; 10. Drainage pipe; 11. Central shaft; 12. First spiral blade; 13. First cylinder; 14. Second spiral blade; 15. Second cylinder; 16. Third spiral blade; 17. Third cylinder; 18. Second connecting member; 19. First connecting member; 20. Third connecting member; 21. Threaded shaft section; 211. Threaded groove; 212. Annular groove; 22. Horizontal circular plate; 221. Drainage hole; 23. Guide rod; 24. Liquid collecting hopper; 25. Liquid collecting column; 26. Liquid blocking cover; 27. Vertical rod; 28. Connecting plate; 29. Connecting rod; 30. Drainage channel; 31. First valve; 32. Positioning plate; 33. Wire mesh demister; 34. Plug-in part; 341. Insertion plate; 35. Annular plate; 36. Liquid blocking annular plate; 37. Annular guiding plate; 38. First top sleeve; 39. First bottom sleeve; 40. Second top sleeve. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0029] The following is one of the embodiments of a gas-liquid separation device provided by the present invention: As Figures 1 - 10 shown, a gas-liquid separation device includes a vertical cylinder 6, a first cylinder 13, a second cylinder 15, a third cylinder 17, a first spiral blade 12, a second spiral blade 14, a third spiral blade 16, a wire mesh demisting mechanism and a rotary driving mechanism.

[0030] As Figure 1 、 Figure 2As shown in the figure, the vertical cylinder 6 is arranged vertically. The vertical cylinder 6 includes a straight cylinder section 601 and a collection section 602 arranged in sequence from top to bottom. The top of the straight cylinder section 601 is provided with a top plate, and the middle of the top plate is connected with an inlet cylinder 3 with a closed top. A mixture inlet is opened on the side wall of the inlet cylinder 3, and an inlet pipe 4 is connected to the mixture inlet.

[0031] A support frame 2 is also installed on the top plate. The support frame 2 includes a support plate 201, and the support plate 201 straddles the inlet cylinder 3 and is arranged above the inlet cylinder 3.

[0032] As Figure 1 , Figure 2 , Figure 8 , Figure 9 As shown in the figure, an insertion port 603 and a gas outlet are also opened at the top of the side wall of the straight cylinder section 601. The gas outlet is located above the insertion port 603, and an outlet pipe 5 is connected to the gas outlet. The insertion port 603 extends along the circumferential direction of the straight cylinder section 601 and covers half of the outer side wall of the straight cylinder section 601. A vertically extending positioning plate 32 is connected to one end of the insertion port 603 inside the straight cylinder section 601.

[0033] The collection section 602 is in an inverted conical shape. The bottom end of the collection section 602 is provided with a liquid outlet, and a drain pipe 10 is connected to the liquid outlet. A second valve is installed in the drain pipe 10. An inverted conical annular guide plate 37 is also provided on the inner side wall of the collection section 602.

[0034] As Figure 4 , Figure 6 As shown in the figure, a first cylinder 13 is located inside the vertical cylinder 6. The first cylinder 13 is coaxial with the vertical cylinder 6. The top end of the first cylinder 13 is fixedly connected to the top plate. The inner diameter of the first cylinder 13 is larger than the inner diameter of the inlet cylinder 3. A central shaft 11 is coaxially inserted into the first cylinder 13. The top end of the central shaft 11 passes through the inlet cylinder 3 and extends to the outside of the inlet cylinder 3. A first channel is formed in the region between the first cylinder 13 and the central shaft 11.

[0035] As Figure 6 , Figure 7 As shown in the figure, the bottom end of the central shaft 11 is coaxially connected with a vertically extending threaded shaft section. Thread grooves 211 are provided on the outer periphery of the threaded shaft section 21, and an annular groove 212 communicating with the thread grooves 211 is provided at the top of the thread grooves 211.

[0036] A second cylinder 15 is located inside the vertical cylinder 6 and is coaxially sleeved outside the first cylinder 13. There is a gap between the top end of the second cylinder 15 and the top plate. The bottom end of the second cylinder 15 is lower than the first cylinder 13. A second channel is formed in the region between the second cylinder 15 and the first cylinder 13.

[0037] A liquid collecting hopper 24 in an inverted conical shape is connected to the bottom end of the second cylinder 15. A liquid discharge channel 30 is connected to the bottom end of the liquid collecting hopper 24. The liquid discharge channel 30 is located within the collection section 602 and above the liquid outlet. A first valve 31 is installed within the liquid discharge channel 30. The bottom end of the liquid discharge channel 30 is connected to a liquid blocking ring plate 36 in an umbrella shape. A gap for the liquid to pass through is provided between the outer periphery of the liquid blocking ring plate 36 and the inner sidewall of the collection section 602.

[0038] As Figure 4 , Figure 5 shown, two vertically extending guide rods 23 are installed inside the liquid collecting hopper 24. A horizontal circular plate 22 is slidably sleeved on the guide rods 23. The outer diameter dimension of the horizontal circular plate 22 is smaller than the inner diameter dimension of the first cylinder 13. A circular liquid discharge hole 221 is provided at the center of the horizontal circular plate 22. The liquid collecting hopper 24, the horizontal circular plate 22, and the liquid discharge channel 30 form a liquid discharge part.

[0039] A liquid blocking cover 26 in a cylindrical shape is also installed above the horizontal circular plate 22. The top end of the liquid blocking cover 26 is closed and the bottom end is open. The liquid blocking cover 26 is connected to the horizontal circular plate 22 through a plurality of vertical rods 27 spaced apart along the circumference of the liquid discharge hole 221. A gap for the liquid to flow into the liquid discharge hole 221 is provided between the bottom end of the liquid blocking cover 26 and the horizontal circular plate 22. A liquid collecting column 25 is connected to the inner sidewall of the top of the liquid blocking cover 26. The liquid collecting column 25 is in an inverted conical shape, and the bottom end of the liquid collecting column 25 is located directly above the liquid discharge hole 221.

[0040] Two vertically arranged connecting rods 29 are connected to the top of the liquid blocking cover 26. The top ends of the connecting rods 29 are connected to a horizontally arranged connecting plate 28. A through hole penetrating up and down is provided in the middle of the connecting plate 28, and an inserting block is provided on the hole wall of the through hole. The connecting plate 28 is sleeved on the above-mentioned threaded shaft section 21 through the through hole, and the inserting block is inserted into the threaded groove 211.

[0041] When the threaded shaft section 21 rotates forward, it can drive the connecting plate 28 and the horizontal circular plate 22 below to move upward through the cooperation of the inserting block and the threaded groove 211. When the inserting block moves to the top end of the threaded groove 211, it is inserted into the annular groove 212. At this time, the inserting block rotates within the annular groove 212 and no longer drives the connecting plate 28 and the horizontal circular plate 22 to move upward. When the threaded shaft section 21 rotates reversely, due to the gravitational action of structures such as the connecting plate 28 and the horizontal circular plate 22, the inserting block can move from the annular groove 212 to the threaded groove 211, thereby driving the connecting plate 28 and the horizontal circular plate to move downward through the cooperation of the inserting block and the threaded groove 211, so that the horizontal circular plate 22 moves to the initial state of contacting the inner sidewall of the collection section 602.

[0042] The cylinder three 17 is located inside the vertical cylinder 6 and coaxially sleeved outside the cylinder two 15. The top end of the cylinder three 17 is fixedly connected to the inner side wall of the top of the vertical cylinder 6. The area between the cylinder three 17 and the cylinder two 15 forms a passage three. A circular slideway is provided at the top of the outer side wall of the cylinder three 17. The slideway includes two annular plates 35 arranged parallel up and down. The space between the two annular plates 35 forms an annular slot.

[0043] A connecting piece three 20 is connected between the bottom end of the cylinder three 17 and the bottom end of the cylinder two 15. The connecting piece three 20 fixes the cylinder two 15 to the cylinder three 17, thereby realizing the relative fixation between the cylinder two 15 and the vertical cylinder 6.

[0044] As Figure 4 、 Figure 6 shown, the spiral blade one 12 is located in the passage one and fixedly sleeved on the central shaft 11. The outer end of the spiral blade one 12 contacts the inner side wall of the cylinder one 13.

[0045] The spiral blade two 14 is located in the passage two and rotatably sleeved on the cylinder one 13. The outer end of the spiral blade two 14 contacts the inner side wall of the cylinder two 15. The top end of the spiral blade two 14 is connected with a top sleeve one 38. The top sleeve one 38 is rotatably sleeved outside the cylinder one 13. The bottom end of the spiral blade two 14 is connected with a bottom sleeve one 39. The bottom sleeve one 39 is rotatably sleeved outside the cylinder one 13. The bottom end of the bottom sleeve one 39 is lower than the bottom end of the cylinder one 13. A connecting piece one 19 is connected between the central shaft 11 and the bottom sleeve one 39. The connecting piece one 19 includes a coaxial inner ring one and outer ring one. The inner ring one is fixedly sleeved outside the central shaft 11. The outer ring one coaxially penetrates inside the bottom sleeve one 39 and is fixedly connected with the bottom sleeve one 39.

[0046] The spiral blade three 16 is located in the passage three and rotatably sleeved on the cylinder two 15. The outer end of the spiral blade three 16 contacts the inner side wall of the cylinder three 17. The top end of the spiral blade three 16 is connected with a top sleeve two 40. The top sleeve two 40 is rotatably sleeved outside the cylinder two 15. The top end of the top sleeve two 40 is higher than the top end of the cylinder two 15. A connecting piece two 18 is connected between the top sleeve two 40 and the top sleeve one 38. The connecting piece two 18 includes a coaxial inner ring two and outer ring two. The inner ring two is fixedly sleeved outside the top sleeve one 38. The outer ring two coaxially penetrates inside the top sleeve two 40 and is fixedly connected with the top sleeve two 40.

[0047] The spiral directions of the above-mentioned spiral blades are the same. When the central shaft 11 rotates forward, it can drive the spiral blades to rotate synchronously. When the spiral blades rotate, they can scrape the impurities on the side walls of the cylinders.

[0048] As Figure 3 、 Figure 10As shown, the wire mesh demister mechanism includes two semi-annular wire mesh demisters 33. The wire mesh demisters 33 are composed of multiple layers of fine wire mesh and a supporting structure. They achieve efficient removal of tiny droplets in the gas through the principles of physical interception and inertial sedimentation. The wire mesh demister 33 is an existing technology and can be customized into a semi-annular structure. Its structure will not be introduced in detail here.

[0049] The top of the wire mesh demister 33 is connected to a plurality of L-shaped plug-ins 34 distributed at intervals along the circumference of the wire mesh demister 33 . The plug-in 34 includes an insert plate 341 at the top. The insert plate 341 is inserted into the above-mentioned slideway.

[0050] like Figure 3 As shown, two wire mesh demisters 33 are arranged in a circular ring shape relative to each other and are sleeved on the outer side of the cylinder 17 , and the positioning plate 32 is clamped between the two wire mesh demisters 33 .

[0051] A sealing assembly is also provided on the outside of the straight section 601. The sealing assembly includes a sealing member 1 7 and a sealing member 2 8. The sealing member 1 7 includes an arcuate sealing plate 1 and two ear plates 1 701 connected to the ends of the arcuate sealing plate 1. The sealing member 7 also includes an arcuate spacer 702 connected to the inner side of the arcuate sealing plate 1. The shape of the arcuate spacer 702 matches the shape of the insertion port 603. The arcuate spacer 702 can be inserted into the insertion port 603 and pressed against the wire mesh demister 33. The sealing member 2 8 includes an arcuate sealing plate 2 and two ear plates 2 801 connected to the ends of the arcuate sealing plate 2. The arcuate sealing plate 1 is longer than the arcuate sealing plate 2.

[0052] Arc-shaped blocking plates 1 and 2 are oppositely fastened to the outside of cylinder 3 17 . Arc-shaped blocking plate 1 covers the outside of insertion port 603 . Arc-shaped pad 702 passes through insertion port 603 and presses against wire mesh demister 33 . Connecting bolts 9 are inserted through lug plate 1 701 and lug plate 2 801 on the same side. These bolts press sealing pieces 1 7 and 2 8 against the outside of cylinder 3 17 .

[0053] like Figure 1 、 Figure 2 As shown, the rotation driving mechanism is a driving motor 1 , which is mounted on the support plate 201 . The driving motor 1 is in transmission connection with the central shaft 11 for driving the central shaft 11 to rotate.

[0054] A negative pressure suction device is connected to outlet pipe 5. This device can assist the gas-liquid mixture in flowing along channels 1, 2, and 3 within vertical cylinder 6, thereby enhancing the flow dynamics of the gas-liquid mixture. The negative pressure suction device is prior art, and its structure will not be described in detail here.

[0055] The above-mentioned valve 1-31 and valve 2 are opened or closed electronically. When the valves are opened, they can allow relatively large solid impurities to pass through, and structures such as butterfly valves that can provide a relatively large flow area can be adopted.

[0056] When the present invention is in use, a gas-liquid mixture is introduced through the inlet pipe, and the gas-liquid mixture flows along passage 1, passage 2, and passage 3. Since spiral vanes are installed in each passage, the gas-liquid mixture will flow at a high speed in a spiral shape. During the flowing process, the heavier liquid is thrown out under the action of centrifugal force and thus flows downward along the side walls of each cylinder and the spiral vanes.

[0057] The liquid separated in passage 1 and passage 2 flows into the liquid collecting hopper 24 through the liquid discharge holes 221. When the liquid in the liquid collecting hopper 24 reaches a certain amount, valve 1-31 is opened to discharge the liquid in the liquid collecting hopper 24 into the collection section 602. Since the horizontal circular plate 22 is provided and the liquid retaining cover 26 is provided at the liquid discharge holes 221, when the gas-liquid mixture flows from passage 1 to passage 2, it will not directly contact a large amount of the liquid in the liquid collecting hopper 24, avoiding the liquid being mixed into the gas-liquid mixture again. After a small amount of the liquid in the liquid collecting hopper 24 is lifted by the gas-liquid mixture, it can be separated when passing through the liquid retaining column and thus accumulates at the bottom end of the liquid retaining column and drips into the liquid collecting hopper 24 through the liquid discharge holes 221.

[0058] The liquid separated in passage 3 flows downward into the collection section 602. When the liquid in the collection section 602 reaches the set value, valve 2 is opened to discharge the liquid in the collection section 602.

[0059] After the gas-liquid mixture passes through passage 1, passage 2, and passage 3, most of the liquid in it is separated. The remaining gas flows upward between cylinder 3-17 and the straight cylinder section 601 and is discharged through the outlet pipe 5 after passing through the wire mesh demisting mechanism. The wire mesh demisting mechanism can remove the tiny liquid droplets contained in the gas, thereby further enhancing the gas-liquid separation effect.

[0060] When the gas-liquid separation device has been used for a period of time, it needs to be cleaned internally. At this time, valve 1-31 and valve 2 can be closed first, and a cleaning liquid is injected into the vertical cylinder 6 through the inlet pipe. Then, the driving motor 1 is started, and the central shaft 11 rotates forward to drive each spiral vane to rotate. When the spiral vanes rotate, they can scrape the impurities on the side walls of each cylinder, and at the same time, the spiral vanes agitate the cleaning liquid, enhancing the cleaning effect on the spiral vanes themselves.

[0061] When the central shaft 11 rotates forward, the connecting plate 28 is driven by the threaded shaft section 21 to move upward, and the horizontal circular plate 22 is driven by the connecting plate 28 to move upward. The horizontal circular plate 22 is separated from the inner side wall of the liquid collecting hopper 24, forming a gap between the horizontal circular plate 22 and the inner side wall of the liquid collecting hopper 24, increasing the communication space between the second channel and the first channel and the inner cavity of the liquid collecting hopper 24. When it is necessary to scrape off the cleaning liquid and impurities in the vertical cylinder 6 after the cleaning is completed, it is convenient for the impurities to flow into the liquid collecting hopper 24 and be discharged from the liquid discharge channel 30, avoiding blockage caused by the small size of the liquid discharge hole 221.

[0062] After the cleaning is completed, the driving motor 1 drives the central shaft 11 to rotate reversely by a set number of turns, driving the connecting plate 28 to move downward to the initial position. At this time, the horizontal circular plate 22 returns to the initial state where the outer end is in contact with the inner side wall of the liquid collecting hopper 24.

[0063] The wire mesh demisting mechanism in the present invention also needs to be cleaned or replaced regularly. Therefore, it is necessary to regularly remove the wire mesh demisting mechanism from the equipment. When disassembling the wire mesh demisting mechanism, only need to remove the connecting bolt 9 first, and then remove the first plugging member 7 and the second plugging member 8 from the vertical cylinder 6, and then take out the two wire mesh demisters 33 in sequence. When installing the wire mesh demisting mechanism, first insert one of the wire mesh demisters 33 into the vertical cylinder 6 through the insertion port 603, so that the insertion plate 341 at the top of the wire mesh demister 33 is inserted into the slot, and then rotate the wire mesh demister 33 until it touches the positioning plate 32, and then insert the other wire mesh demister 33 into the vertical cylinder 6 through the insertion port 603 in the above manner.

Claims

1. A gas-liquid separation device, comprising a cylinder body, a mixture inlet for supplying a gas-liquid mixture is provided at the top end of the cylinder body, a liquid outlet is provided at the bottom end, and a gas outlet is further provided at the top of the side wall of the cylinder body, characterized in that, The cylinder body is provided with cylinder 1, cylinder 2 and cylinder 3 which are coaxially sleeved from the inside to the outside. The outer diameter of cylinder 3 is smaller than the outer diameter of the vertical cylinder. A rotatable central shaft is coaxially passed through cylinder 1. The area between the central shaft and cylinder 1 forms channel 1, the area between cylinder 1 and cylinder 2 forms channel 2, and the area between cylinder 2 and cylinder 3 forms channel 3. The top end of channel 1 is connected to the mixture inlet, the bottom end of channel 1 is connected to the bottom end of channel 2, the top end of channel 2 is connected to the top end of channel 3, and the bottom end of channel 3 is connected to the liquid outlet. The bottom of cylinder 2 is provided with a drainage part connected to the liquid outlet; spiral blade 1, spiral blade 2 and spiral blade 3 are respectively provided in channel 1, channel 2 and channel 3. Spiral blade 1 is fixedly sleeved on the outside of the central shaft, and its outer end contacts the inner wall of cylinder 1. Spiral blade 2 is rotatably sleeved on the outside of cylinder 1, and its outer end contacts the inner wall of cylinder 2. Spiral blade 3 is rotatably sleeved on the outside of cylinder 2, and its outer end contacts the inner wall of cylinder 3.

2. The gas-liquid separation device according to claim 1, characterized in that, A rotary drive mechanism is installed on the top of the cylinder, which is connected to the central shaft for driving the central shaft to rotate. The bottom end of the central shaft is connected to the bottom end of spiral blade two by connecting piece one, and the top end of spiral blade two is connected to the top end of spiral blade three by connecting piece two. When the central shaft is driven to rotate, it can drive spiral blade one, spiral blade two and spiral blade three to rotate synchronously.

3. The gas-liquid separation device according to claim 1, characterized in that, The drainage part includes a liquid collecting hopper and a horizontal circular plate. The liquid collecting hopper is in an inverted cone shape and is connected to the bottom of the cylinder 2. The bottom end of the liquid collecting hopper is connected to a drainage pipe. A valve 1 is installed in the drainage pipe. The horizontal circular plate is arranged in the liquid collecting hopper, and the periphery can be pressed on the inner wall of the liquid collecting hopper. A drainage hole is provided in the middle of the horizontal circular plate, which passes through the upper and lower parts.

4. The gas-liquid separation device according to claim 3, characterized in that, A liquid blocking cover is also installed on the horizontal circular plate. The liquid blocking cover is arranged above the drainage hole, and a gap is provided between the liquid blocking cover and the horizontal circular plate for liquid to flow in. An inverted cone-shaped liquid collecting column is installed on the top inner wall of the liquid blocking cover, and the bottom end of the liquid collecting column is arranged above the drainage hole opposite the drainage hole.

5. The gas-liquid separation device according to claim 4, characterized in that, The horizontal circular plate is installed in the liquid collecting bucket for upward and downward sliding guidance. The outer diameter of the horizontal circular plate is smaller than the outer diameter of the cylinder 2. A connecting plate is connected to the top of the liquid blocking cover. The connecting plate is provided with a through hole. An insert is provided on the wall of the through hole. The bottom end of the central axis is coaxially connected to a threaded shaft segment. A threaded groove is provided on the outer side wall of the threaded shaft segment. There is also an annular groove located at the top of the threaded groove and connected to the threaded groove. The connecting plate is sleeved on the outside of the threaded shaft segment through the through hole, and the insert is inserted in the threaded groove.

6. A gas-liquid separation device according to any one of claims 1-5, characterized in that, The bottom of the cylinder is an inverted cone-shaped collecting section, and the liquid outlet is provided at the bottom end of the collecting section. The liquid outlet is connected to a drainage pipe, and a valve 2 is installed in the drainage pipe. The bottom end of the drainage channel is connected to an umbrella-shaped liquid-blocking ring plate, and a gap is provided between the outer periphery of the liquid-blocking ring plate and the inner side wall of the collecting section for allowing liquid to flow to the liquid outlet.

7. A gas-liquid separation device according to any one of claims 1-5, characterized in that, An annular wire mesh defoaming mechanism is provided between the top of the cylinder body and the top of the cylinder three. The wire mesh defoaming mechanism is located below the gas outlet and can be detachably installed in the vertical cylinder.

8. An air-liquid separation device according to claim 7, characterized in that, The wire mesh demisting mechanism includes two semi-circular wire mesh demisters. Plug-ins are connected to the wire mesh demisters. An annular slot is provided on the outer side wall of the third cylinder. The plug-ins on the two wire mesh demisters are inserted into the slot. An insertion opening is formed on the outer side wall of the vertical cylinder. A positioning plate is provided at one end of the insertion opening. The positioning plate is located inside the vertical cylinder and is clamped between the ends where one side of the two wire mesh demisters meets. A sealing assembly is provided outside the cylinder body, and the sealing assembly can seal the insertion opening.

9. The gas-liquid separation device according to claim 8, wherein The sealing assembly includes a first sealing member and a second sealing member. The first sealing member includes a first arc-shaped sealing plate and two ear plates connected to both ends of the first arc-shaped sealing plate. The second sealing member includes a second arc-shaped sealing plate and two ear plates connected to both ends of the second arc-shaped sealing plate. The first arc-shaped sealing plate and the second arc-shaped sealing plate are oppositely buckled on the outside of the vertical cylinder and cover the insertion opening. There is a gap between the ear plates one and the ear plates two and they are connected by connecting bolts so that the first arc-shaped sealing plate and the second arc-shaped sealing plate are pressed tightly on the vertical cylinder.

10. A gas-liquid separation device according to claim 9, characterized in that, The first arc-shaped sealing plate faces the insertion opening, and an arc-shaped cushion block is connected to the inner side of the first arc-shaped sealing plate. The arc-shaped cushion block can pass through the insertion opening and press tightly on the wire mesh demister.

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