Gas-liquid separator

Abstract

The invention discloses a gas-liquid separator, and belongs to the field of gas-liquid separators. The invention discloses a gas-liquid separator which comprises a shell and a separation mechanism arranged in the shell, an air inlet pipe and an air outlet pipe are arranged on the outer wall of the shell; two baffles which are distributed in parallel are arranged in the shell; the separating mechanism comprises two sliding plates which are arranged in parallel and slide between the two baffles in a sealed mode, and two adjusting plates installed between the two sliding plates. The two adjusting plates are rotationally connected together; one adjusting plate is rotationally connected with one sliding plate; a wire mesh demister is arranged on the adjusting plate; a separation cavity communicated with the air outlet pipe is formed above the baffle plate, the sliding plate and the adjusting plate; a through opening is formed below the baffle, the sliding plate and the adjusting plate. When the flow rate of gas flowing into the shell through the gas inlet pipe is too large or too small, the flow rate of the gas at the position of the through opening is changed by adjusting the size of the through opening.

Description

Technical Field

[0001] The invention belongs to the field of gas-liquid separators, and more specifically, relates to a gas-liquid separator. Background Art

[0002] The gas-liquid separator uses the principle of wire mesh filtration to achieve liquid removal. It is generally installed in front of the drying device to achieve coarse filtration to remove part of the moisture in the air to reduce the workload of the drying device. The wire mesh filtration refers to the wire mesh demister installed in the gas-liquid separator.

[0003] The wire mesh demister can not only filter out larger liquid foam suspended in the airflow, but also filter out smaller and tiny liquid foam. When the gas with mist foam rises through the wire mesh at a certain speed, due to the inertia of the rising mist foam, the mist foam collides with the wire mesh filaments and is attached to the surface of the filaments. The diffusion of the mist foam on the surface of the filaments and the gravity sedimentation of the mist foam cause the mist foam to form larger droplets that flow along the filaments to the intersection of the two filaments. The wettability of the filaments, the surface tension of the liquid and the capillary action of the filaments make the droplets larger and larger until the aggregated droplets are so large that the gravity generated by themselves exceeds the combined force of the rising force of the gas and the surface tension of the liquid, and the droplets separate and fall from the filaments.

[0004] However, the wire mesh demister has certain requirements for the gas flow rate. If the gas flow rate is low, the inertia of the mist rising is small, and it is difficult to quickly separate the gas and the mist. If the gas flow rate is fast, the impact of the mist on the wire mesh demister is large, which increases the loss of the wire mesh demister and reduces its service life. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a gas-liquid separator which can automatically change the gas flow rate acting on the wire mesh demister according to the gas flow rate entering the gas-liquid separator.

[0006] A gas-liquid separator of the present invention comprises a shell and a separation mechanism arranged in the shell; an air inlet pipe and an air outlet pipe are arranged on the outer wall of the shell; two parallel baffles are arranged inside the shell; the separation mechanism comprises two parallel sliding plates that are sealed and slide between the two baffles, and two adjustment plates installed between the two slides; the two adjustment plates are rotatably connected together; one adjustment plate is rotatably connected to one slide; a wire mesh demister is arranged on the adjustment plate; a separation chamber connected to the air outlet pipe is formed above the baffle, the slide and the adjustment plate; a through opening is formed below the baffle, the slide and the adjustment plate; when the slide moves, the size of the through opening changes.

[0007] As a further improvement of the present invention, a screw is provided on the slide; the axis of the screw is parallel to the sliding direction of the slide; the separation mechanism also includes a threaded sleeve rotatably connected to the screw in the separation chamber, and a motor driving the threaded sleeve to rotate.

[0008] As a further improvement of the present invention, a guide table is rotatably connected to the shell below the separation mechanism; the guide table is in a truncated cone shape, and the rotating shaft is vertically arranged; water dripping from the wire mesh demister flows through the side wall of the guide table to the bottom of the guide table; the guide table is provided with radially distributed spray ports; and a pump body is installed at the bottom of the shell.

[0009] As a further improvement of the present invention, one of the slide plates is rotatably connected to an impeller driven by airflow; the impeller is transmission-connected to the guide platform.

[0010] As a further improvement of the present invention, a guide shell is fixedly connected to the slide plate; the impeller is rotatably connected in the guide shell; an air inlet facing the air inlet pipe is provided on the guide shell; when the two slide plates move to the extreme positions away from each other, the air inlet is plugged and connected to the air inlet pipe.

[0011] As a further improvement of the present invention, a drain pipe is provided on the side wall of the shell; the pump body includes a pump casing and a piston body sealingly and slidingly connected in the pump casing; a water inlet pipe and a diversion chamber are provided on the side wall of the pump casing; a cleaning pipe connected to the spray port and a water outlet pipe connected to the drain pipe are provided on the side wall of the diversion chamber.

[0012] As a further improvement of the present invention, a cam is coaxially arranged at the lower end of the guide platform; the cam includes a first abutment surface and a second abutment surface that are alternately arranged; the first abutment surface is higher than the second abutment surface; a abutment rod that slides along the cam surface is arranged on the piston body; a spring that drives the abutment rod to abut the cam is arranged between the piston body and the pump housing.

[0013] As a further improvement of the present invention, a water inlet check valve is fixedly connected in the water inlet pipe; a water outlet check valve is fixedly connected in the water outlet pipe; and a cleaning check valve and filter cotton are fixedly connected in the cleaning pipe.

[0014] As a further improvement of the present invention, a switching valve body is sealingly and slidably connected in the diversion cavity; at the same time, the switching valve body only closes one of the water outlet pipe and the cleaning pipe.

[0015] As a further improvement of the present invention, a swing frame is rotatably connected to the pump housing; a float is arranged at an eccentric position of the swing frame; a switching column extending to the outside of the diversion chamber is arranged at the upper end of the switching valve body; swing rods are respectively arranged on both sides of the switching column on the swing frame; when the liquid level in the pump body changes, the float moves synchronously, and the swing rod drives the switching valve body to move.

[0016] Compared with the prior art, the beneficial effect of the present invention is that the present invention changes the size of the opening by changing the spacing between the two slide plates. When the flow rate of the gas flowing into the housing through the air inlet pipe is too large or too small, the gas flow rate at the position of the opening is changed by adjusting the size of the opening, so that the gas flow rate acting on the wire mesh demister is always within an appropriate range, thereby extending the service life of the wire mesh demister.

[0017] In this solution, the slide plate slides, and when the slide plate moves to the extreme position away from each other, the air inlet pipe is connected with the air inlet port, so that the airflow entering the air inlet pipe is not only used to cooperate with the wire mesh demister to separate the airflow, but also can drive the impeller to rotate and then drive the guide table to rotate.

[0018] In this solution, the guide table rotates so that the water sprayed from the spray port will be sprayed to various positions on the wire mesh demister to wash away the impurities attached to the wire mesh demister; the guide table can also drive the pump body to work through the cam.

[0019] In this solution, by changing the position of the switching valve body, when the pump body is working, the water pumped out by the pump body can be discharged to the outside through the water outlet pipe to reduce the water in the shell and avoid excessive water in the shell affecting the normal use of the gas-liquid separator; it can also enter the spray port through the cleaning pipe to make the spray port spray water.

[0020] This solution confirms the liquid level in the shell by setting a float. When the liquid level in the shell exceeds the set range, the water in the shell needs to be drained, and then the float moves the switching valve body to connect the outlet pipe with the inside of the pump shell to facilitate drainage. When the liquid level in the shell is within the set range, the float connects the cleaning pipe with the inside of the pump shell through the switching valve body, and uses the water in the shell to flush the wire mesh demister. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the wire mesh demister of the present invention when it is working; Figure 3 It is a structural schematic diagram of the air inlet and the air inlet pipe of the present invention when they are connected by plugging; Figure 4 It is a structural schematic diagram of the separation mechanism of the present invention; Figure 5 It is a schematic structural diagram of the pump body and the guide platform of the present invention.

[0022] Description of the numbers in the figure: 1. Shell; 11. Air inlet pipe; 12. Air outlet pipe; 13. Drain pipe; 14. Baffle; 15. Separation chamber; 16. Through port; 17. Gap; 2. Separation mechanism; 21. Slide plate; 211. Screw; 22. Adjustment plate; 23. Wire mesh demister; 24. Guide shell; 241. Air inlet; 242. Flow channel; 25. Impeller; 251. Face gear; 26. Motor; 27. Threaded sleeve; 28. Synchronous belt; 3. Pump body; 31. Pump casing; 3 2. Water inlet pipe; 33. Diversion chamber; 34. Water outlet pipe; 35. Cleaning pipe; 36. Switching valve body; 361. Switching column; 37. Float; 371. Swing rod; 372. Swing frame; 38. Piston body; 381. Push rod; 39. Spring; 4. Guide platform; 41. Spray port; 42. External gear; 43. Cam; 431. First push surface; 432. Second push surface; 44. Rotating pipe; 5. Transmission shaft; 51. Lower gear; 52. Upper gear. DETAILED DESCRIPTION

[0023] Specific embodiment 1: Please refer to Figure 1-Figure 5 A gas-liquid separator, comprising a shell 1, a separation mechanism 2 arranged in the shell 1; an air inlet pipe 11 and an air outlet pipe 12 are arranged on the outer wall of the shell 1; two parallel baffles 14 are arranged inside the shell 1; the separation mechanism 2 comprises two parallel slide plates 21 sealingly sliding between the two baffles 14, and two adjustment plates 22 installed between the two slide plates 21; the two adjustment plates 22 are rotatably connected together; one adjustment plate 22 is rotatably connected to one slide plate 21; a wire mesh demister 23 is arranged on the adjustment plate 22; a separation chamber 15 connected to the air outlet pipe 12 is formed above the baffle 14, the slide plate 21 and the adjustment plate 22; a through opening 16 is formed below the baffle 14, the slide plate 21 and the adjustment plate 22; when the slide plate 21 moves, the size of the through opening 16 changes.

[0024] If the gas flow rate in the air intake pipe 11 is low, the area of ​​the through-port 16 is reduced, and the gas flow rate through the through-port 16 is increased. On the contrary, if the gas flow rate in the air intake pipe 11 is high, the area of ​​the through-port 16 is increased, and the gas flow rate through the through-port 16 is reduced. Then, according to the gas flow rate in the air intake pipe 11, the size of the through-port 16 is adjusted so that the gas flow rate through the wire mesh demister 23 is within a suitable range.

[0025] The slide plate 21 is provided with a screw rod 211; the axis of the screw rod 211 is parallel to the sliding direction of the slide plate 21; the separation mechanism 2 also includes a threaded sleeve 27 rotatably connected to the screw rod 211 in the separation chamber 15, and a motor 26 driving the threaded sleeve 27 to rotate.

[0026] The motor 26 is connected to the threaded sleeve 27 via a synchronous belt 28; the two screws 211 are connected to the threaded sleeve 27 in opposite directions, and the two slides 21 move in opposite directions. A motor cavity for accommodating the motor 26 is provided at the top of the separation chamber 15; the motor cavity is closed to prevent airflow from affecting the motor 26.

[0027] A guide platform 4 is rotatably connected to the shell 1 below the separation mechanism 2; the guide platform 4 is truncated cone-shaped, and the rotating shaft is vertically arranged; the water dripping from the wire mesh demister 23 flows through the side wall of the guide platform 4 to the bottom of the guide platform 4; the guide platform 4 is provided with spray ports 41 distributed along the radial direction; a pump body 3 is installed at the bottom of the shell 1.

[0028] A gap 17 for water to flow through is formed between the guide platform 4 and the housing 1 ; the guide platform 4 effectively blocks the airflow from entering the bottom of the guide platform 4 ; the airflow flows toward the opening 16 after encountering the guide platform 4 .

[0029] An impeller 25 driven by airflow is rotatably connected to one of the slide plates 21 ; the impeller 25 is transmission-connected to the guide platform 4 .

[0030] The rotation axis of the impeller 25 is perpendicular to the slide plate 21 .

[0031] The slide plate 21 is fixedly connected to a guide shell 24; the impeller 25 is rotatably connected in the guide shell 24; the guide shell 24 is provided with an air inlet 241 facing the air inlet pipe 11; when the two slide plates 21 move to the extreme positions away from each other, the air inlet 241 is plugged and connected to the air inlet pipe 11.

[0032] A transmission shaft 5 is rotatably connected inside the housing 1; an external gear 42 is coaxially arranged on the guide platform 4; a lower gear 51 meshing with the external gear 42 is coaxially arranged on the transmission shaft 5; an end gear 251 is coaxially arranged on the impeller 25; an upper gear 52 capable of meshing with the end gear 251 is coaxially arranged on the transmission shaft 5.

[0033] The guide shell 24 is provided with a flow channel 242 tangent to the impeller 25 ; the upper end of the flow channel 242 is communicated with the air inlet 241 , and the lower end is communicated with the interior of the housing 1 .

[0034] A drain pipe 13 is provided on the side wall of the shell 1; the pump body 3 includes a pump shell 31 and a piston body 38 sealingly and slidingly connected in the pump shell 31; a water inlet pipe 32 and a diversion chamber 33 are provided on the side wall of the pump shell 31; a cleaning pipe 35 connected to the spray port 41 and a water outlet pipe 34 connected to the drain pipe 13 are provided on the side wall of the diversion chamber 33.

[0035] A cam 43 is coaxially arranged at the lower end of the guide platform 4; the cam 43 includes a first abutment surface 431 and a second abutment surface 432 which are alternately arranged; the first abutment surface 431 is higher than the second abutment surface 432; a abutment rod 381 which slides along the surface of the cam 43 is arranged on the piston body 38; a spring 39 which drives the abutment rod 381 to abut against the cam 43 is arranged between the piston body 38 and the pump housing 31.

[0036] The piston body 38 only slides in the pump housing 31 along the longitudinal direction; when the guide platform 4 rotates, the abutment rod 381 moves between the first abutment surface 431 and the second abutment surface 432, and then the cam 43 drives the piston body 38 to reciprocate.

[0037] The water inlet pipe 32 is fixedly connected with a water inlet check valve; the water outlet pipe 34 is fixedly connected with a water outlet check valve; the cleaning pipe 35 is fixedly connected with a cleaning check valve and filter cotton.

[0038] By setting the water inlet check valve, the water outlet check valve and the cleaning check valve, when the piston body 38 reciprocates, the water inside the shell 1 enters the pump housing 31 through the water inlet check valve and leaves the pump housing 31 through the water outlet check valve or the cleaning check valve.

[0039] The filter cotton separates the water in the pump housing 31, so that the water entering the spray port 41 through the cleaning check valve does not contain fine impurities. The fine impurities can be discharged to the outside through the water outlet check valve and the drain pipe 13.

[0040] A switching valve body 36 is sealingly and slidably connected in the diversion chamber 33 ; at the same time, the switching valve body 36 only closes one of the water outlet pipe 34 and the cleaning pipe 35 .

[0041] The pump housing 31 is rotatably connected with a swing frame 372; a float 37 is arranged at an eccentric position of the swing frame 372; a switching column 361 extending to the outside of the diversion chamber 33 is arranged at the upper end of the switching valve body 36; swing rods 371 are respectively arranged on both sides of the switching column 361 on the swing frame 372; when the liquid level in the pump body 3 changes, the float 37 moves synchronously, and the swing rod 371 drives the switching valve body 36 to move.

[0042] A rotating tube 44 is fixedly connected in the shell 1 and is coaxially rotatably connected to the guide platform 4 ; one end of the rotating tube 44 is connected to each spray port 41 , and the other end is connected to the cleaning tube 35 .

[0043] The spray ports 41 are distributed radially along the guide platform 4, and the number is small. As the guide platform 4 rotates, the water sprayed from the spray ports 41 evenly impacts the wire mesh demister 23. Since the number of the spray ports 41 is small, the flow velocity of the water flow at the spray ports 41 is increased, and the impact force of the water flow on the wire mesh demister 23 is increased.

[0044] The through opening 16 is provided with a flow velocity sensor for detecting the flow velocity of the air flow.

[0045] During operation, external gas enters the housing 1 through the air inlet pipe 11. The gas contains liquid foam and fine impurities.

[0046] After passing through the guide platform 4, the gas moves toward the opening 16. Then, the gas passes through the wire mesh demister 23 to separate the liquid foam and fine impurities in the gas. The liquid foam and fine impurities will be retained on the wire mesh demister 23, and the dried gas enters the separation chamber 15 and finally flows out of the housing 1 from the outlet pipe 12.

[0047] When the flow sensor detects that the gas flow rate in the opening 16 is low, the motor 26 works to drive the threaded sleeve 27 to rotate through the synchronous belt 28. The two slide plates 21 approach each other, the area of ​​the opening 16 decreases, and the flow rate at the opening 16 is forced to increase.

[0048] Similarly, when the flow rate sensor detects that the gas flow rate in the opening 16 is relatively high, the motor 26 operates, the two slide plates 21 move away from each other, the area of ​​the opening 16 increases, and the flow rate at the opening 16 is forced to decrease.

[0049] As the gas-liquid separator continues to work, the water on the wire mesh demister 23 gradually increases, and then the water gathers into water droplets and drips onto the guide platform 4. Finally, the water will flow through the guide platform 4 to the bottom of the guide platform 4, and some impurities will be attached to the water droplets. The water below the guide platform 4 gradually increases.

[0050] When the amount of water below the guide platform 4 exceeds the set range, the buoyancy of the water drives the float 37 to move to the upper limit position, and the float 37 drives the swing frame 372 to rotate, so that the swing rod 371 drives the switching column 361 to move, and then the switching valve body 36 closes the cleaning pipe 35, and the water outlet pipe 34 is connected to the inside of the pump housing 31. At this time, the water in the housing 1 needs to be discharged.

[0051] When draining water, the motor 26 works, so that the two slide plates 21 move to the extreme positions away from each other, the air inlet 241 is plugged and connected with the air inlet pipe 11, and the end gear 251 is meshed with the upper gear 52.

[0052] After that, the gas entering the air inlet pipe 11 will enter the flow channel 242 through the air inlet 241, and the airflow in the flow channel 242 will drive the impeller 25 to rotate. After being transmitted by the transmission shaft 5, the impeller 25 drives the guide platform 4 to rotate.

[0053] As the guide platform 4 rotates, the cam 43 on the guide platform 4 drives the piston body 38 to reciprocate. The movement of the piston body 38 causes the water in the housing 1 to enter the pump housing 31 through the water inlet pipe 32, and then be discharged to the outside through the water outlet pipe 34 and the drain pipe 13. At the same time, the water will take away the impurities deposited in the housing 1.

[0054] As the water in the housing 1 is drained, the water level in the housing 1 gradually decreases. The height of the float 37 also decreases accordingly. The swing frame 372 drives the switching valve body 36 to move. Finally, when the water level drops to within the set range, the switching valve body 36 closes the water outlet pipe 34, and the cleaning pipe 35 is connected to the inside of the pump housing 31.

[0055] When the wire mesh demister 23 needs to be flushed, the motor 26 works, so that the two slide plates 21 move to the extreme positions away from each other, the air inlet 241 is plugged and connected with the air inlet pipe 11, and the end gear 251 is meshed with the upper gear 52. The gas in the air inlet pipe 11 drives the impeller 25 to rotate, and then the guide table 4 rotates synchronously.

[0056] The cam 43 on the guide platform 4 drives the piston body 38 to reciprocate, and the water at the bottom of the housing 1 will be sprayed out from the spray port 41 under the action of the pump body 3, and impact the wire mesh demister 23. At the same time, as the guide platform 4 rotates, the water sprayed from the spray port 41 will flush various positions of the wire mesh demister 23, and flush away the impurities attached to the wire mesh demister 23.

[0057] After a certain period of time, the flushing is completed, the motor 26 is operated, the two slide plates 21 are close to each other, and the air inlet 241 is separated from the air inlet pipe 11. The wire mesh demister 23 continues to separate the gas entering the air inlet pipe 11.

Claims

1. A gas-liquid separator, characterized in that: It includes a shell and a separation mechanism arranged in the shell; the outer wall of the shell is provided with an air inlet pipe and an air outlet pipe; two parallel baffles are arranged inside the shell; the separation mechanism includes two parallel sliding plates that are sealed and slide between the two baffles, and two adjustment plates installed between the two slides; the two adjustment plates are rotatably connected together; one adjustment plate is rotatably connected to one slide; a wire mesh demister is arranged on the adjustment plate; a separation chamber connected to the air outlet pipe is formed above the baffle, the slide and the adjustment plate; a through opening is formed below the baffle, the slide and the adjustment plate; when the slide moves, the size of the through opening changes.

2. A gas-liquid separator according to claim 1, characterized in that: The slide plate is provided with a screw rod; the axis of the screw rod is parallel to the sliding direction of the slide plate; the separation mechanism also includes a threaded sleeve rotatably connected to the separation chamber and connected to the screw rod, and a motor driving the threaded sleeve to rotate.

3. A gas-liquid separator according to claim 1, characterized in that: A guide platform is rotatably connected to the shell below the separation mechanism; the guide platform is in a truncated cone shape, and the rotating shaft is vertically arranged; water dripping from the wire mesh demister flows to the bottom of the guide platform through the side wall of the guide platform; the guide platform is provided with spray ports distributed in the radial direction; a pump body is installed at the bottom of the shell.

4. A gas-liquid separator according to claim 3, characterized in that: An impeller driven by airflow is rotatably connected to one of the slide plates; the impeller is transmission-connected to the guide platform.

5. A gas-liquid separator according to claim 4, characterized in that: The slide plate is fixedly connected with a guide shell; the impeller is rotatably connected in the guide shell; the guide shell is provided with an air inlet facing the air inlet pipe; when the two slide plates move to the extreme positions away from each other, the air inlet is plugged and connected with the air inlet pipe.

6. A gas-liquid separator according to claim 3, characterized in that: The shell side wall is provided with a drain pipe; the pump body includes a pump shell and a piston body sealingly and slidingly connected in the pump shell; the pump shell side wall is provided with a water inlet pipe and a diversion chamber; the diversion chamber side wall is provided with a cleaning pipe connected to the spray port and a water outlet pipe connected to the drain pipe.

7. A gas-liquid separator according to claim 6, characterized in that: A cam is coaxially arranged at the lower end of the guide platform; the cam includes a first abutment surface and a second abutment surface that are alternately arranged; the first abutment surface is higher than the second abutment surface; a abutment rod that slides along the cam surface is arranged on the piston body; a spring that drives the abutment rod to abut against the cam is arranged between the piston body and the pump housing.

8. A gas-liquid separator according to claim 6, characterized in that: A water inlet check valve is fixedly connected in the water inlet pipe; a water outlet check valve is fixedly connected in the water outlet pipe; and a cleaning check valve and filter cotton are fixedly connected in the cleaning pipe.

9. A gas-liquid separator according to claim 6, characterized in that: A switching valve body is sealingly and slidably connected in the diversion cavity; at the same time, the switching valve body only closes one of the water outlet pipe and the cleaning pipe.

10. A gas-liquid separator according to claim 9, characterized in that: A swing frame is rotatably connected to the pump housing; a float is arranged at an eccentric position of the swing frame; a switching column extending to the outside of the diversion chamber is arranged at the upper end of the switching valve body; swing rods are respectively arranged on both sides of the switching column on the swing frame; when the liquid level in the pump body changes, the float moves synchronously, and the swing rod drives the switching valve body to move.

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