A multi-stage gas-liquid separator

Abstract

The present invention relates to the field of separation technology, and specifically discloses a multi-stage gas-liquid separator, including a shell and an inertial collision separation unit, a defoaming separation unit and a condensation separation unit arranged in the shell; the spiral collision plate in the inertial collision separation unit periodically changes the width of the inertial collision flow channel through up and down reciprocating motion, forming a pulsed variable-diameter spiral channel, thereby improving the separation effect of high-viscosity reaction by-product droplets, and the inertial collision flow channel and the floating flow channel form a two-way fluid path to avoid inter-stage back mixing; the outer wire mesh and the inner wire mesh in the defoaming separation unit form a gradient interception barrier, combined with the directional backblowing of the inverted cone backblowing part, to promote the effective separation of aerosol and gas, while reducing the wire mesh clogging rate; the first annular fin and the second annular fin in the condensation separation unit adopt a staggered distribution topology structure to break the laminar boundary layer, so that the gas forms turbulent disturbance in the condensation separation unit, thereby increasing the aggregation rate of condensed droplets.

Description

Technical Field

[0001] The present invention relates to the field of separation technology, and more particularly to a multi-stage gas-liquid separator. Background Art

[0002] In the chemical and pharmaceutical industries, reaction exhaust often contains high concentrations of volatile organic compounds (VOCs) and sticky byproduct droplets (such as colloids generated by polymerization reactions), which require gas-liquid separation to meet environmental emission and solvent recovery requirements;

[0003] The fixed flow guide structure in traditional separation equipment cannot adapt to the shear crushing requirements of high-viscosity droplets, the capture rate of viscous droplets with a particle size greater than 50μm is insufficient, and the pressure loss is easily increased due to flow channel blockage; when separating VOCs aerosols, it is easy to cause aerosol adhesion and foam accumulation, and frequent shutdowns are required to clean the blocked areas; in addition, the traditional axial flow condenser has a high droplet escape rate, and the independent setting of the drainage pipeline is prone to leakage or siphon disturbance, resulting in secondary pollution of the purified gas. Summary of the Invention

[0004] In order to overcome the above technical problems, the present invention proposes a multi-stage gas-liquid separator.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A multi-stage gas-liquid separator, comprising:

[0007] The shell has an inlet pipe in the middle, an exhaust pipe at the top and a drain pipe at the bottom;

[0008] An inertial collision separation unit is disposed within the shell and directly above the liquid discharge pipe, comprising a partition tube coaxially fixed within the shell, an inertial collision flow channel formed between the partition tube and the shell, the upper end of the inertial collision flow channel being connected to the input pipe, a spiral collision plate being movably disposed within the inertial collision flow channel, and an upward floating flow channel formed within the partition tube and connected to the lower end of the inertial collision flow channel;

[0009] The defoaming separation unit is arranged in the shell and located directly above the inertial collision separation unit, and includes a sealing cover coaxially fixed in the shell, the sealing cover is respectively provided with an inner wire mesh and an outer wire mesh, and an inverted cone-shaped backflush member adapted to the inner wire mesh and the outer wire mesh is also provided above the sealing cover;

[0010] The condensation separation unit is arranged in the shell and located directly above the defoaming separation unit, and includes an upper partition plate and a lower partition plate distributed in sequence from top to bottom, the upper partition plate is provided with a plurality of first annular fins, and the lower partition plate is provided with a plurality of second annular fins, and the first annular fins and the second annular fins are distributed alternately.

[0011] As a further solution of the present invention: a cylinder is vertically fixed on the top of the shell, and the output end of the cylinder is connected to a telescopic rod that vertically passes through the condensation separation unit, the defoaming separation unit and the inertial collision separation unit in sequence; the upper end of the spiral collision plate is fixed in the inertial collision flow channel, and the lower end of the spiral collision plate is suspended in the inertial collision flow channel. A plurality of push-pull rods are circumferentially arranged on the lower end of the spiral collision plate, and the push-pull rods are fixedly connected to the telescopic rod through a connecting rod.

[0012] As a further solution of the present invention: a flow guide cover is provided below the middle partition tube, a drainage hole connected to the drainage pipe is opened in the center of the flow guide cover, and a spoiler is provided above the drainage hole.

[0013] As a further solution of the present invention: the spoiler includes a separating plate fixed on the air guide cover, and the separating plate is provided with a guide cone surface and a flexible spoiler bag from the inside to the outside. The separating plates on the inner and outer sides of the flexible spoiler bag are respectively provided with a first drain port and a second drain port; the top of the flexible spoiler bag is fixedly connected to the push-pull rod.

[0014] As a further solution of the present invention: the defoaming and separation unit also includes an air bin fixed to the upper end surface of the isolation cover, a piston disc is movably arranged in the air bin, the piston disc is fixedly sleeved on the telescopic rod, the lower end of the air bin is in one-way communication with the inverted cone-shaped back-blowing part, a one-way valve is installed on the piston disc, and the isolation cover is provided with a drainage groove adapted to the inner wire mesh.

[0015] As a further solution of the present invention: the inverted cone back-blowing part includes a back-blowing hood fixed to the outside of the air bin, an air duct connected to the bottom of the air bin is opened in the back-blowing hood, a plurality of blowing ports connected to the air duct are opened circumferentially on the outside of the back-blowing hood, and a flexible one-way sealing plate is movably provided at the connection between the back-blowing hood and the air bin, and the flexible one-way sealing plate only allows the gas in the air bin to flow into the air duct in one direction.

[0016] As a further solution of the present invention: the defoaming and separation unit further includes a vibrating ring adapted to the outer wire mesh, the vibrating ring is located below the outer wire mesh and fixedly connected to the telescopic rod via a connecting frame.

[0017] As a further solution of the present invention: an S-shaped condensation flow channel extending radially is formed between the first annular fin and the second annular fin, the radially outward end of the S-shaped condensation flow channel is the flow channel inlet, the radially inward end of the S-shaped condensation flow channel is the flow channel outlet, and a plurality of drainage grooves are circumferentially opened at the bottom of each group of second annular fins.

[0018] As a further solution of the present invention: a hollow drainage channel connected to the drainage pipe is axially opened in the telescopic rod, and a plurality of communication ports connected to the flow channel outlet are circumferentially opened at the upper end of the hollow drainage channel;

[0019] When the telescopic rod is lowered into place, the lower end of the communication port is just connected with the lower partition plate; when the telescopic rod is raised into place, the communication port and the lower partition plate are staggered.

[0020] As a further solution of the present invention: a condensation top plate is provided above the upper partition plate, the height of the condensation top plate gradually decreases radially inward, and a condensation chamber connected to the exhaust pipe is formed between the condensation top plate and the upper partition plate.

[0021] Beneficial effects of the present invention:

[0022] The spiral collision plate in the inertial collision separation unit periodically changes the width of the inertial collision flow channel through up and down reciprocating motion, forming a pulsed variable-diameter spiral channel, enhancing the probability of droplet collision and kinetic energy dissipation, and improving the separation effect of high-viscosity reaction by-product droplets. The inertial collision flow channel (spiral downward) and the floating flow channel (returning upward) form a two-way fluid path, and the flow field is partitioned by the middle partition tube to avoid inter-stage back mixing; the outer wire mesh and the inner wire mesh in the defoaming separation unit form a gradient interception barrier (external resistance to large particles / internal capture of VOCs aerosols), combined with the directional backflushing of the inverted cone backflushing piece, to achieve defoaming self-cleaning, promote the effective separation of aerosols and gases, and reduce the wire mesh clogging rate; the first annular fin and the second annular fin in the condensation separation unit adopt a staggered distribution topology structure to break the laminar boundary layer, so that the gas forms turbulent disturbances in the condensation separation unit, thereby increasing the aggregation rate of condensed droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the inertial collision separation unit in the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 Schematic diagram of the structure of the defoaming separation unit in the present invention;

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 Schematic diagram of the structure of the condensation separation unit in the present invention;

[0031] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0032] In the picture:

[0033] 100, housing; 110, inlet pipe; 120, exhaust pipe; 130, drain pipe; 140, cylinder; 150, telescopic rod; 151, hollow drain channel; 152, connecting port;

[0034] 200, inertial collision separation unit; 210, middle partition; 220, inertial collision flow channel; 230, floating flow channel; 240, flow deflector; 241, drainage hole; 250, spiral collision plate; 251, push-pull rod; 252, connecting rod; 260, spoiler; 261, separation plate; 262, guide cone; 263, flexible spoiler capsule; 264, first drainage port; 265, second drainage port;

[0035] 300, defoaming and separation unit; 310, isolation cover; 311, drainage notch; 320, inner screen; 330, outer screen; 340, air chamber; 350, piston disc; 351, one-way valve; 360, inverted cone-shaped blowback element; 361, blowback cover; 362, air duct; 363, blow port; 364, flexible one-way sealing plate; 370, vibrating ring; 371, connecting frame;

[0036] 400, condensation separation unit; 410, upper partition plate; 420, lower partition plate; 430, first annular fin; 440, second annular fin; 441, drainage channel; 450, S-shaped condensation channel; 451, channel inlet; 452, channel outlet; 460, condensation top plate; 470, condensation chamber. DETAILED DESCRIPTION

[0037] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0038] See also Figure 1 and Figure 2 The present invention discloses a multi-stage gas-liquid separator, comprising a shell 100, an inertial collision separation unit 200, a defoaming separation unit 300, and a condensation separation unit 400. An inlet pipe 110 is provided in the middle of the shell 100, an exhaust pipe 120 is provided at the top of the shell 100, and a drain pipe 130 is provided at the bottom of the shell 100.

[0039] See also Figure 3 The inertial collision separation unit 200 is disposed in the shell 100 and is located directly above the discharge pipe 130. It includes a middle partition tube 210 coaxially fixed in the shell 100. An inertial collision flow channel 220 is formed between the middle partition tube 210 and the shell 100. The upper end of the inertial collision flow channel 220 is connected to the input pipe 110. A spiral collision plate 250 is movably provided in the inertial collision flow channel 220. An upward floating flow channel 230 is formed in the middle partition tube 210 and is connected to the lower end of the inertial collision flow channel 220.

[0040] See also Figure 5 The defoaming separation unit 300 is arranged in the shell 100 and is located directly above the inertial collision separation unit 200. It includes a sealing cover 310 coaxially fixed in the shell 100. The sealing cover 310 is respectively provided with an inner screen 320 and an outer screen 330. An inverted cone-shaped backflush member 360 adapted to the inner screen 320 and the outer screen 330 is also provided above the sealing cover 310;

[0041] See also Figure 7 The condensation separation unit 400 is disposed in the housing 100 and is located directly above the defoaming separation unit 300. It includes an upper partition plate 410 and a lower partition plate 420 that are sequentially distributed from top to bottom. The upper partition plate 410 is provided with a plurality of first annular fins 430, and the lower partition plate 420 is provided with a plurality of second annular fins 440. The first annular fins 430 and the second annular fins 440 are staggered.

[0042] Specifically, a mixture of volatile organic compounds and reaction by-product droplets is introduced into the housing 100 through the input pipe 110. The spiral channel formed by the inertial collision channel 220 and the spiral collision plate 250 restricts the spiral downward movement of the mixture. The spiral collision plate 250 reciprocates up and down, periodically changing the width of the spiral channel, thereby periodically colliding the mixture in the spiral channel, promoting the separation of the droplets and the gas. The droplets flow downward along the spiral collision plate 250 and are discharged into the drain pipe 130, while the gas returns upward through the upward floating channel 230 and flows into the defoaming separation unit 300.

[0043] The outer screen 330 in the defoaming and separation unit 300 intercepts small droplets of liquid in the gas, and the inner screen 320 captures the entrained VOCs aerosol. The inner and outer screens 320 and 330 are back-flushed by the inverted conical back-flushing member 360 to remove foam. The removed droplets drip downward into the upper floating channel 230 and slide downward along the inner wall of the upper floating channel 230 into the drain pipe 130. The gas after defoaming continues to flow upward into the condensation separation unit 400.

[0044] The gas passes through the staggered first annular fins 430 and the second annular fins 440 in sequence, and the gas is condensed and heat-exchanged by the first annular fins 430 and the second annular fins 440, further promoting the condensation and liquefaction of moisture in the gas. The liquid droplets are then discharged downward along the lower partition plate 420, and the purified gas passes upward through the upper partition plate 410 and is discharged from the exhaust pipe 120.

[0045] It should be noted that the spiral collision plate 250 in the inertial collision separation unit 200 periodically changes the width of the inertial collision flow channel 220 through up and down reciprocating motion, forming a pulsed variable diameter spiral channel, enhancing the probability of droplet collision and kinetic energy dissipation, and improving the separation effect of high-viscosity reaction by-product droplets. The inertial collision flow channel 220 (spiral downward) and the floating flow channel 230 (return upward) form a two-way fluid path, and the flow field is partitioned by the middle partition tube 210 to avoid inter-stage back mixing; the outer screen 3 in the defoaming separation unit 300 30 and the inner screen 320 form a gradient interception barrier (external resistance to large particles / internal capture of VOCs aerosols), combined with the directional backflushing of the inverted cone backflushing piece 360, to achieve foam removal and self-cleaning, promote the effective separation of aerosol and gas, and reduce the blockage rate of the screen; the first annular fin 430 and the second annular fin 440 in the condensation separation unit 400 adopt a staggered distribution topology structure, which breaks the laminar boundary layer and causes the gas to form turbulent disturbance in the condensation separation unit 400, thereby improving the heat transfer coefficient and increasing the aggregation rate of condensed droplets.

[0046] In one embodiment, see Figure 2 and Figure 3 A cylinder 140 is vertically fixed to the top of the shell 100, and the output end of the cylinder 140 is connected to a telescopic rod 150 that vertically passes through the condensation separation unit 400, the defoaming separation unit 300 and the inertial collision separation unit 200 in sequence; the upper end of the spiral collision plate 250 is fixed in the inertial collision flow channel 220, and the lower end of the spiral collision plate 250 is suspended in the inertial collision flow channel 220. A plurality of push-pull rods 251 are circumferentially arranged on the lower end of the spiral collision plate 250, and the push-pull rods 251 are fixedly connected to the telescopic rod 150 through a connecting rod 252;

[0047] Specifically, by driving the telescopic rod 150 to move back and forth by the cylinder 140, the push-pull rods 251 can be synchronously driven to move up and down, thereby pushing and pulling the lower end of the spiral collision plate 250 back and forth in the vertical direction, and then periodically changing the width of the inertial collision channel 220. The droplets in the mixture are collided by the up and down oscillating spiral collision plate 250, effectively improving the separation effect of high-viscosity reaction by-product droplets.

[0048] It is worth noting that the cylinder 140 drives the telescopic rod 150 to drive the push-pull rod 251 to move back and forth, causing the lower end of the spiral collision plate 250 to produce periodic oscillations in the vertical direction, periodically changing the channel width of the inertial collision channel 220, forming a pulsed variable diameter flow field, and producing a shearing and crushing effect on high-viscosity droplets, thereby improving the separation efficiency; the spiral collision plate 250 vibrates up and down, forcing the droplets to undergo inertial collision and secondary rebound capture with the plate surface, effectively improving the removal rate of large-particle size, high-viscosity droplets; in addition, the spiral collision plate 250 can automatically scrape the inner wall of the inertial collision channel 220 during oscillation, remove attached sediment, and avoid a surge in pressure loss caused by channel narrowing.

[0049] Further, see Figure 3 A flow guide cover 240 is provided below the middle partition tube 210 , a drainage hole 241 communicating with the drainage pipe 130 is provided in the center of the flow guide cover 240 , and a spoiler 260 is provided above the drainage hole 241 ;

[0050] See also Figure 4 The spoiler 260 includes a separation plate 261 fixed to the deflector 240. The separation plate 261 is provided with a guide cone 262 and a flexible spoiler flap 263 from the inside to the outside. The separation plate 261 on the inner and outer sides of the flexible spoiler flap 263 is respectively provided with a first drain port 264 and a second drain port 265. The top of the flexible spoiler flap 263 is fixedly connected to the push-pull rod 251.

[0051] Specifically, when the telescopic rod 150 drives the spiral collision plate 250 to oscillate up and down, the push-pull rod 251 can drive the flexible spoiler flap 263 to periodically stretch upward and compress and fold downward, thereby utilizing the periodic elastic deformation of the flexible spoiler flap 263 to disturb the mixed airflow above the separation plate 261, thereby promoting further separation of the droplets and the gas, and at the same time periodically pushing the gas upward into the floating flow channel 230; during the flow disturbance process, the separated droplets can slide down the inclined surface of the separation plate 261 and the flexible spoiler flap 263 to the first drain port 264 and the second drain port 265, and finally be discharged into the drain pipe 130 through the drainage hole 241 on the guide cover 240.

[0052] It should be noted that the push-pull rod 251 drives the flexible spoiler flap 263 to periodically stretch or compress, forming a high-frequency elastic disturbance flow field, destroying the laminar state of the airflow, promoting the secondary separation of droplets and gas, and improving the capture efficiency of large-particle-size, high-viscosity droplets; the guide cone 262 radially disperses the airflow, and the force generated by the deformation of the flexible spoiler flap 263 throws the droplets to the inclined surface of the separation disk 261, and is discharged in stages through the first drainage port 264 (large droplets in the center) and the second drainage port 265 (small droplets on the edge), to avoid droplet aggregation and clogging of the drainage hole 241.

[0053] In yet another embodiment, see Figure 5 and Figure 6 The defoaming and separation unit 300 further includes an air chamber 340 fixed to the upper end surface of the isolation cover 310, a piston disc 350 is movably provided in the air chamber 340, the piston disc 350 is fixedly sleeved on the telescopic rod 150, the lower end of the air chamber 340 is in one-way communication with the inverted conical back-blowing member 360, a one-way valve 351 is installed on the piston disc 350, and a drainage notch 311 adapted to the inner screen 320 is opened on the isolation cover 310;

[0054] Specifically, when the telescopic rod 150 moves upward, it drives the piston disc 350 to slide upward synchronously along the air bin 340. At this time, the one-way valve 351 opens, and the lower end of the air bin 340 and the channel of the inverted conical back-blowing piece 360 ​​are blocked, so that the air on the upper layer of the piston disc 350 is transferred to the bottom of the piston disc 350; then the telescopic rod 150 moves downward, driving the piston disc 350 to slide downward synchronously. At this time, the one-way valve 351 is closed, and the lower end of the air bin 340 and the channel of the inverted conical back-blowing piece 360 ​​are connected, and the piston disc 350 can be used to squeeze the air in the air bin 340 into the inverted conical back-blowing piece 360, so that the airflow ejected from the inverted conical back-blowing piece 360 ​​is used to back-blow and remove foam from the inner screen 320 and the outer screen 330.

[0055] Further, see Figure 6 The inverted conical back-blowing member 360 includes a back-blowing cover 361 fixed to the outside of the gas bin 340, an air channel 362 communicating with the bottom of the gas bin 340 is opened in the back-blowing cover 361, a plurality of blowing ports 363 communicating with the air channel 362 are opened circumferentially on the outside of the back-blowing cover 361, and a flexible one-way sealing plate 364 is movably provided at the connection between the back-blowing cover 361 and the gas bin 340, and the flexible one-way sealing plate 364 only allows the gas in the gas bin 340 to flow into the air channel 362 in one direction;

[0056] Specifically, when the piston disc 350 moves upward, the flexible one-way sealing plate 364 blocks the passage between the gas chamber 340 and the air duct 362; when the piston disc 350 moves downward, the air pressure in the gas chamber 340 increases, and the flexible one-way sealing plate 364 flips upward under the action of the pressure difference, thereby opening the passage between the gas chamber 340 and the air duct 362 to press the gas in the gas chamber 340 into the air duct 362, and then the gas is ejected toward the inner screen 320 and the outer screen 330 through the blowing ports 363, thereby backblowing the liquid foam adhering to the inner screen 320 and the outer screen 330, causing the foam to separate from the inner screen 320 and the outer screen 330, wherein the foam blown off the inner screen 320 can be discharged downward through the drainage slot 311 on the isolation cover 310.

[0057] It is worth noting that the telescopic rod 150 drives the piston disc 350 to move up and down, and the inverted cone-shaped back-blowing part 360 is used for directional blowing, and the back-blowing function can be achieved without an external air source; when the piston disc 350 moves downward, a high-pressure pulse airflow is formed and ejected from the blowing port 363, which produces a shearing and peeling effect on the foam adhering to the inner screen 320 and the outer screen 330, thereby improving the back-blowing efficiency; the flexible one-way sealing plate 364 only allows the air chamber 340 to pass unidirectionally toward the airway 362, and automatically closes when the piston disc 350 returns, avoiding reverse leakage of the airflow and improving the utilization rate of the back-blowing airflow; the blown-away foam flows down along the inclined surface of the isolation cover 310 through the drainage groove 311, and is discharged through the drainage pipe 130 after merging with the droplets in the inertial collision section. The liquid-gas separation path is completely isolated, and the back-blowing droplets are prevented from entering the purified airflow for the second time.

[0058] For further information, see Figure 5 The defoaming and separation unit 300 further includes a vibrating ring 370 adapted to the outer screen 330 , the vibrating ring 370 is located below the outer screen 330 and is fixedly connected to the telescopic rod 150 through a connecting frame 371 ;

[0059] Specifically, when the telescopic rod 150 telescopes, it can synchronously drive the vibrating ring 370 to vibrate and strike the outer screen 330 , thereby further promoting the separation of large foam droplets adhering to the outer screen 330 .

[0060] It is worth noting that the telescopic rod 150 rigidly drives the vibrating ring 370 through the connecting frame 371, causing the outer screen 330 to generate high-frequency micro-amplitude vibrations, thereby improving the efficiency of removing large-particle foam droplets adhering to the surface of the outer screen 330; the vibrating knocking (vibrating ring 370) and the airflow backblowing (inverted cone-shaped backblowing member 360) form a mechanical-pneumatic composite cleaning mechanism, achieving three-dimensional cleaning of the screen surface (axial vibration + radial airflow flushing), effectively improving the cleaning coverage rate.

[0061] In further embodiments, see Figure 7 An S-shaped condensation channel 450 extending radially is formed between the first annular fin 430 and the second annular fin 440. The radially outward end of the S-shaped condensation channel 450 is a channel inlet 451, and the radially inward end of the S-shaped condensation channel 450 is a channel outlet 452. A plurality of drainage grooves 441 are circumferentially formed at the bottom of each group of second annular fins 440.

[0062] Specifically, the gas discharged from the defoaming and separation unit 300 enters the S-shaped condensation flow channel 450 from the flow channel inlet 451. During the radial flow of the gas in the S-shaped condensation flow channel 450, the gas is subjected to heat exchange and condensation treatment through the staggered first annular fins 430 and the second annular fins 440, thereby promoting the condensation and liquefaction of moisture in the gas. Subsequently, the droplets produced by the liquefaction are discharged from the flow channel outlet 452 through the drainage groove 441 at the bottom of each second annular fin 440. The purified gas after condensation and separation is discharged from the flow channel outlet 452, passes vertically upward through the upper partition plate 410, and is finally discharged from the exhaust pipe 120.

[0063] It should be noted that the S-shaped condensation flow channel 450 is designed with a radially extending serpentine path to delay the gas flow path, forcing the gas to fully contact the first annular fin 430 and the second annular fin 440, thereby improving the heat exchange efficiency; the first annular fin 430 and the second annular fin 440 are staggered to form a periodic flow channel mutation, destroying the laminar boundary layer, inducing the gas to generate local vortexes, prompting the condensation droplets to quickly aggregate, and increasing the droplet condensation and sedimentation rate; the drainage grooves 441 are evenly distributed along the circumference of the bottom of the second annular fin 440, and the condensation droplets preferentially converge to the grooves under the action of surface tension, thereby reducing the droplet escape rate and avoiding secondary contamination of the purified gas.

[0064] Further, see Figure 8 In order to allow the condensed and focused droplets to be discharged smoothly, a hollow drainage channel 151 communicating with the drainage pipe 130 is axially opened in the telescopic rod 150, and a plurality of communication ports 152 communicating with the flow channel outlet 452 are circumferentially opened at the upper end of the hollow drainage channel 151;

[0065] When the telescopic rod 150 is lowered into place, the lower end of the communication port 152 is just connected to the lower partition plate 420; when the telescopic rod 150 is raised into place, the communication port 152 and the lower partition plate 420 are staggered;

[0066] Specifically, the liquid generated by condensation in the S-shaped condensation channel 450 converges to the channel outlet 452 through each drainage groove 441. When the telescopic rod 150 drops into place, the liquid droplets can enter the hollow drainage channel 151 through the connecting port 152, and then be discharged into the drainage pipe 130 through the hollow drainage channel 151.

[0067] When the telescopic rod 150 is lowered to its proper position, the communication port 152 is connected to the lower partition plate 420 , and the condensate is quickly discharged through the flow channel outlet 452 → the communication port 152 → the hollow drainage channel 151 → the drainage pipe 130 ;

[0068] When the telescopic rod 150 rises to its proper position, the communication port 152 is offset from the lower partition plate 420, completely blocking the droplet leakage path and achieving zero-leakage periodic drainage;

[0069] The hollow drainage channel 151 is integrated into the telescopic rod 150, eliminating the need for additional drainage pipes and saving space.

[0070] The connecting ports 152 are evenly distributed around the circumference, ensuring that the condensate at the flow channel outlet 452 is fully covered and diverted, thereby improving drainage efficiency; the connecting ports 152 are always located above the lower partition plate 420, utilizing the liquid level difference to form gravity drainage, thereby avoiding airflow disturbances caused by the siphon effect; when the telescopic rod 150 reciprocates, a periodic shear flow is generated on the inner wall of the hollow drainage channel 151, thereby effectively removing scale on the inner wall of the channel.

[0071] It is worth noting that the position of the connecting port 152 is always located above the lower partition plate 420. In this way, during the up and down movement of the telescopic rod 150, the gathered droplets can be discharged periodically without causing the droplets above the lower partition plate 420 to leak.

[0072] For further information, see Figure 7 A condensation top plate 460 is provided above the upper partition plate 410 , and the height of the condensation top plate 460 gradually decreases radially inwardly, and a condensation chamber 470 communicating with the exhaust pipe 120 is formed between the condensation top plate 460 and the upper partition plate 410 ;

[0073] Specifically, the purified gas passes through the upper partition plate 410 and enters the condensation chamber 470, and the gas is further condensed by heat exchange through the condensation top plate 460, so that the residual moisture in the gas is further condensed and liquefied, and then the liquefied droplets return to the center along the gradually inclined lower end surface of the condensation top plate 460, and then the liquid falls vertically to the lower flow channel outlet 452, thereby following the condensed and liquefied droplets through the S-shaped condensation flow channel 450 to gather together and discharge into the hollow drainage channel 151.

[0074] It is worth noting that the condensation top plate 460 and the upper partition plate 410 form a condensation chamber 470, which performs terminal deep condensation on the gas preliminarily purified by the S-shaped condensation flow channel 450, thereby improving the residual moisture removal rate and the ultra-fine droplet capture efficiency; the condensation top plate 460 gradually decreases in height radially inward (slope 3°-5°), and uses the synergistic effect of surface tension and gravity to make the droplets automatically converge to the center along the slope; the droplets in the condensation chamber 470 → fall from the center to the flow channel outlet 452 → hollow drainage channel 151 → drainage pipe 130, forming a fully enclosed drainage circuit, completely isolating the contact path between the purified gas and the droplets.

[0075] The above describes the specific embodiments of the present invention, but the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can also make many forms, all of which are protected by the present invention.

Claims

1. A multi-stage gas-liquid separator, characterized in that: include: A housing (100) is provided with an inlet pipe (110) in the middle thereof, an exhaust pipe (120) is provided at the top of the housing (100), and a liquid discharge pipe (130) is provided at the bottom of the housing (100); An inertial collision separation unit (200) is arranged in the shell (100) and is located directly above the discharge pipe (130), comprising a middle partition cylinder (210) coaxially fixed in the shell (100), an inertial collision flow channel (220) being formed between the middle partition cylinder (210) and the shell (100), the upper end of the inertial collision flow channel (220) being connected to the input pipe (110), a spiral collision plate (250) being movably provided in the inertial collision flow channel (220), and an upward floating flow channel (230) being formed in the middle partition cylinder (210) and being connected to the lower end of the inertial collision flow channel (220); A defoaming separation unit (300) is arranged in the shell (100) and located directly above the inertial collision separation unit (200), comprising a sealing cover (310) coaxially fixed in the shell (100), an inner wire mesh (320) and an outer wire mesh (330) being respectively provided on the sealing cover (310), and an inverted conical backflush member (360) adapted to the inner wire mesh (320) and the outer wire mesh (330) being further provided above the sealing cover (310); A condensation separation unit (400) is arranged in the housing (100) and is located directly above the defoaming separation unit (300), comprising an upper partition plate (410) and a lower partition plate (420) sequentially distributed from top to bottom, wherein the upper partition plate (410) is provided with a plurality of first annular fins (430), and the lower partition plate (420) is provided with a plurality of second annular fins (440), and the first annular fins (430) and the second annular fins (440) are distributed in an alternating manner; A cylinder (140) is vertically fixed to the top of the shell (100), and an output end of the cylinder (140) is connected to a telescopic rod (150) that vertically passes through the condensation separation unit (400), the defoaming separation unit (300), and the inertial collision separation unit (200) in sequence; The upper end of the spiral collision plate (250) is fixed in the inertial collision channel (220), and the lower end of the spiral collision plate (250) is suspended in the inertial collision channel (220). A plurality of push-pull rods (251) are circumferentially provided at the lower end of the spiral collision plate (250), and the push-pull rods (251) are fixedly connected to the telescopic rod (150) via a connecting rod (252); A flow guide cover (240) is provided below the middle partition cylinder (210), a drainage hole (241) communicating with the drainage pipe (130) is provided at the center of the flow guide cover (240), and a spoiler (260) is provided above the drainage hole (241); The spoiler (260) includes a separation plate (261) fixed on the deflector cover (240), and a guide cone (262) and a flexible spoiler flap (263) are sequentially provided on the separation plate (261) from the inside to the outside. The separation plates (261) on the inner and outer sides of the flexible spoiler flap (263) are respectively provided with a first liquid discharge port (264) and a second liquid discharge port (265); the top of the flexible spoiler flap (263) is fixedly connected to the push-pull rod (251).

2. A multi-stage gas-liquid separator according to claim 1, characterized in that: The defoaming and separation unit (300) further comprises an air bin (340) fixed to the upper end surface of the sealing cover (310), a piston disc (350) being movably provided in the air bin (340), the piston disc (350) being fixedly sleeved on the telescopic rod (150), the lower end of the air bin (340) being in one-way communication with the inverted cone-shaped back-blowing member (360), a one-way valve (351) being installed on the piston disc (350), and a drainage slot (311) adapted to the inner screen (320) being provided on the sealing cover (310).

3. A multi-stage gas-liquid separator according to claim 2, characterized in that: The inverted cone-shaped back-blowing component (360) includes a back-blowing cover (361) fixed to the outside of the gas bin (340), an air duct (362) connected to the bottom of the gas bin (340) is provided in the back-blowing cover (361), a plurality of blowing ports (363) connected to the air duct (362) are provided on the outer circumference of the back-blowing cover (361), and a flexible one-way sealing plate (364) is movably provided at the connection between the back-blowing cover (361) and the gas bin (340), and the flexible one-way sealing plate (364) only allows the gas in the gas bin (340) to flow into the air duct (362) in one direction.

4. The multi-stage gas-liquid separator according to claim 1, characterized in that: The defoaming and separation unit (300) further comprises a vibrating ring (370) adapted to the outer wire mesh (330); the vibrating ring (370) is located below the outer wire mesh (330) and is fixedly connected to the telescopic rod (150) via a connecting frame (371).

5. The multi-stage gas-liquid separator according to claim 1, characterized in that: An S-shaped condensation flow channel (450) extending radially is formed between the first annular fin (430) and the second annular fin (440), wherein the radially outward end of the S-shaped condensation flow channel (450) is a flow channel inlet (451), and the radially inward end of the S-shaped condensation flow channel (450) is a flow channel outlet (452), and a plurality of drainage grooves (441) are circumferentially formed at the bottom of each group of second annular fins (440).

6. The multi-stage gas-liquid separator according to claim 5, characterized in that: A hollow drainage channel (151) communicating with the drainage pipe (130) is axially provided in the telescopic rod (150), and a plurality of communication ports (152) communicating with the flow channel outlet (452) are circumferentially provided at the upper end of the hollow drainage channel (151); When the telescopic rod (150) is lowered into position, the lower end of the communication opening (152) is just connected to the lower partition plate (420); when the telescopic rod (150) is raised into position, the communication opening (152) and the lower partition plate (420) are staggered.

7. The multi-stage gas-liquid separator according to claim 5, characterized in that: A condensation top plate (460) is provided above the upper partition plate (410), and the height of the condensation top plate (460) gradually decreases radially inwardly. A condensation chamber (470) communicating with the exhaust pipe (120) is formed between the condensation top plate (460) and the upper partition plate (410).

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