Net-shaped filtering mechanism for separating oil drop particulate matters in flue gas
Maintaining the filter temperature by heating and spraying mechanism, the problem of liquid oil droplets forming an oil film and solidification on the filter screen is solved, ensuring the stable operation of the equipment.
Patent Information
- Application Number
- CN202510828953.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2025-08-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Liquid oil droplets tend to deform when they pass through the filter pores, resulting in a decrease in separation efficiency. In the low-temperature environment, the oil membrane solidifies and blocks the filter screen, affecting the normal operation of the equipment.
The heating mechanism and temperature control mechanism are used to keep the filter temperature higher than the liquid oil droplet condenser point through the heating medium, and the filter is cleaned in combination with the spraying mechanism to prevent the formation and solidification of the oil film.
Effectively prevent the formation and solidification of the oil film, maintain the efficient separation performance of the filter, and avoid the sharp rise in the equipment pressure drop and blockage.
Smart Images
Figure CN120393638A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of flue gas separation, and particularly to a mesh filtering mechanism for separating oil droplet particles from flue gas. Background Art
[0002] Flue gas oil droplet particles refer to particulate matter containing oily droplets generated during industrial production or cooking processes, usually formed by the volatilization and condensation of unburned fuels, lubricating oils, organic solvents, etc. They are commonly found in metallurgy, chemical industry, marine diesel engine exhaust, and cooking fumes. Liquid oil droplets coexist with solid particulate matter and are prone to adhering to harmful substances such as polycyclic aromatic hydrocarbons. Generally, mechanical filters such as metal mesh filters and cyclone separators are used to intercept solid particulate matter. The solid particulate matter is directly intercepted because its particle size is larger than the pores of the filter mesh. For particles with a particle size > 1 μm, the interception efficiency is > 95%. The liquid oil droplets form permeate through the pores; However, during actual use, due to the easy deformation and coalescence of liquid oil droplets, they deform when passing through the pores, forming an oil film adhering to the filter mesh surface, which affects the separation efficiency and causes a sharp rise in pressure drop. At the same time, if the equipment is set in an outdoor environment in the north in winter or in polar / high altitude regions, where the environmental temperature is lower than the freezing point of the liquid oil droplets, the oil film adhering to the filter mesh surface quickly solidifies, forming a solid deposition layer that clogs the filter mesh and causes the engine back pressure to rise, forcing the shutdown for maintenance. Summary of the Invention
[0003] The purpose of the present invention is to solve the problems that liquid oil droplets deform when passing through the pores, forming an oil film adhering to the filter mesh surface, which affects the separation efficiency and causes a sharp rise in pressure drop. At the same time, if the environmental temperature is lower than the freezing point of the liquid oil droplets, the oil film adhering to the filter mesh surface quickly solidifies, forming a solid deposition layer that clogs the filter mesh, and to propose a mesh filtering mechanism for separating oil droplet particles from flue gas.
[0004] To achieve the above purpose, the present invention adopts the following technology for a mesh filtering mechanism for separating oil droplet particles from flue gas: It includes a cyclone filter, and the cyclone filter includes a flue gas outlet. A filtering mechanism for filtering oil droplet particles from the flue gas and a heating mechanism with a heating medium stored inside are installed on the flue gas outlet. The filtering mechanism includes a filter mesh and heat exchange fins arranged on the filter mesh; The heating mechanism includes an installation cavity sleeved on the surface of the flue gas outlet. A liquid inlet grid and a liquid outlet grid are respectively installed in two spaces separated by a baffle in the installation cavity; And a sleeve embedded in the flue gas outlet. Two rows of at least one hollow heat exchange tube extending towards the center of the sleeve are penetrated through the sleeve. The two rows of heat exchange tubes are communicated through a connection channel. The filter mesh is arranged inside the sleeve and the heat exchange fins are in contact with the heat exchange tubes; Two shunt holes are formed on the surface of the flue gas outlet. The heating medium flows out from the liquid inlet grid and enters the heat exchange tube through the shunt holes. The heat exchange tube exchanges heat with the heat exchange fins to heat the filter screen.
[0005] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: Liquid inlet and outlet mechanisms are arranged on both sides of the installation cavity. The liquid inlet and outlet mechanisms include a liquid inlet cavity fixedly installed on one side of the liquid inlet grid and a liquid outlet cavity rotatably arranged on one side of the liquid outlet grid. Connector heads are installed on the outer sides of the liquid inlet cavity and the liquid outlet cavity, and a liquid inlet channel and a liquid outlet channel communicating with the installation cavity are respectively installed on the inner sides of the liquid inlet cavity and the liquid outlet cavity.
[0006] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: A temperature control mechanism is arranged inside the installation cavity. The temperature control mechanism includes a fixed partition plate fixedly arranged on the liquid inlet grid and a rotating ring rotatably arranged in the middle of the installation cavity. A baffle is fixedly installed on the rotating ring, and a movable partition plate covering the grid holes of the liquid inlet grid is also arranged on the rotating ring.
[0007] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: The included angle between the movable partition plate and the fixed partition plate is changed by rotating the rotating ring. As the included angle increases, the number of grid holes on the liquid inlet grid that can communicate the installation cavity and the shunt holes increases.
[0008] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: A closing ring is rotatably arranged on the installation cavity. The liquid outlet channel penetrates through the closing ring and is connected to the grid net installed on the baffle.
[0009] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: A spraying mechanism is also arranged on the baffle. The spraying mechanism includes a communicating pipe arranged on the baffle and penetrating through the rotating ring and a through hole opened on the flue gas outlet. The outlet of the communicating pipe penetrates through the rotating ring and is inserted into the through hole. The communicating pipe is connected to the grid net and the inlet of the communicating pipe abuts against the liquid inlet channel; And a closing plate arranged inside the installation cavity and horizontal with the end of the liquid inlet channel close to the communicating pipe. When the communicating pipe abuts against and communicates with the liquid inlet channel, the heating medium enters the communicating pipe through the liquid inlet channel. When the communicating pipe does not abut against and communicate with the liquid inlet channel, the communicating pipe abuts against the closing plate and is closed, and the heating medium enters the installation cavity through the liquid inlet channel.
[0010] As a further description of the mesh filtering mechanism for separating flue gas oil droplet particles in the above technology: A clamping groove is formed on the inner wall of the flue gas outlet. A clamping block that is fitted with the clamping groove is provided on the sleeve. A liquid inlet hole communicating with the through hole is formed in the clamping block. The heating medium enters the liquid inlet hole from the through hole and reaches the sleeve.
[0011] As a further description of the above technology for the mesh filtering mechanism for separating flue gas oil droplet particles: At least two lifting grooves are formed on the inner wall of the liquid inlet hole. A guide rod is arranged in the lifting groove, and a sliding block is sleeved on the guide rod in a sliding manner. A water curtain head is installed between the sliding blocks. After the heating medium contacts the water curtain head, a water curtain covering the filter screen is formed.
[0012] As a further description of the above technology for the mesh filtering mechanism for separating flue gas oil droplet particles: The cyclone filter further includes a separation chamber and a flue gas inlet installed on the separation chamber. The flue gas outlet is installed on the separation chamber and is communicated with an air inlet channel arranged inside the separation chamber.
[0013] As a further description of the above technology for the mesh filtering mechanism for separating flue gas oil droplet particles: A positioning pin is slidably arranged on the separation chamber. At least two positioning holes that are fitted with the positioning pin are equidistantly and circumferentially formed on the surface of the liquid outlet chamber. The positioning pin descends and inserts into the positioning hole to lock the liquid outlet chamber.
[0014] One of the technical solutions in the above technical solutions has the following advantages or beneficial effects: 1. By providing the heating mechanism and the filtering mechanism, when the heating medium in the installation cavity flows out from the liquid inlet grid and passes through the shunt holes into the heat exchange tubes, the heating medium conducts heat to the heat exchange fins attached to the heat exchange tubes through the heat exchange tubes, and then conducts the heat to the filter screen through the heat exchange fins, ensuring that the temperature of the filter screen is always higher than the freezing point of the liquid oil droplets, and at the same time having the effect of heating the liquid oil droplets. The heated liquid oil droplets are active in nature, which can reduce the occurrence of the formation of an adherent oil film. The heating medium in the heat exchange tubes flows through the connection channels to another row of heat exchange tubes, heats another filter screen and then discharges it into another shunt hole, and then flows back into the installation cavity through the liquid outlet grid; 2. By providing the temperature control mechanism and the spraying mechanism, by rotating the liquid outlet chamber, the included angle between the movable baffle and the fixed baffle is changed, and the liquid inlet area of the liquid inlet grid is increased, which can increase the flow rate of the heating medium in the heat exchange tubes, achieve the purpose of increasing the flow rate, reducing the residence time of the cooled heating medium in the heat exchange tubes, and always flowing high-temperature heating medium in the heat exchange tubes, improving the heat exchange frequency between the heating medium and the heat exchange tubes, ensuring that the filter screen is in a constant temperature state. When the liquid outlet chamber drives the connecting pipe to rotate and abuts and communicates with the liquid inlet channel, the heating medium enters the connecting pipe through the liquid inlet channel. Under the action of pressure, the heating medium contacts the water curtain head and forms a water curtain covering the filter screen to wash the adherent oil film attached to the filter screen. Brief Description of the Drawings
[0015] Figure 1 A three-dimensional structural schematic diagram of a mesh filtering mechanism for separating flue gas oil droplet particles is shown; Figure 2 A three-dimensional sectional structural schematic diagram of a mesh filtering mechanism for separating flue gas oil droplet particles is shown; Figure 3 Shows Figure 2 An enlarged schematic diagram of part A in Figure 4 A partial three-dimensional structural schematic diagram of a flue gas outlet and a heating mechanism is shown; Figure 5 A three-dimensional structural schematic diagram of a heating mechanism is shown; Figure 6 A partial three-dimensional structural schematic diagram of a flue gas outlet and a filtering mechanism is shown; Figure 7 A partial three-dimensional structural schematic diagram of a heating mechanism and a filtering mechanism is shown; Figure 8 A three-dimensional structural schematic diagram of a filtering mechanism is shown; Figure 9 A partial front sectional structural schematic diagram of a heating mechanism and a liquid inlet and outlet mechanism is shown; Figure 10 A three-dimensional sectional structural schematic diagram of the heating mechanism during operation and a diagram of the flow direction of the heating medium are shown; Figure 11 A three-dimensional sectional structural schematic diagram of the spraying mechanism during operation and a diagram of the flow direction of the heating medium are shown; Figure 12 Shows Figure 11 An enlarged schematic diagram of part B in Figure 13 A three-dimensional structural schematic diagram of a rotating ring and a baffle is shown.
[0016] Legend: 10. Cyclone filter; 11. Separation chamber; 12. Flue gas inlet; 13. Flue gas outlet; 131. Card slot; 14. Air inlet channel; 20. Heating mechanism; 21. Installation chamber; 22. Liquid inlet grid; 23. Liquid outlet grid; 24. Baffle; 25. Sleeve; 251. Block; 26. Heat exchange tube; 27. Connection channel; 28. Shunt hole; 30. Filtering mechanism; 31. Filter screen; 32. Heat exchange fin; 40. Liquid inlet and outlet mechanism; 41. Liquid inlet chamber; 42. Liquid outlet chamber; 43. Connector; 44. Liquid inlet channel; 45. Liquid outlet channel; 46. Grid; 50, Temperature control mechanism; 51, Rotating ring; 52, Movable baffle; 53, Fixed baffle; 54, Sealing ring; 60, Spraying mechanism; 61, Connecting pipe; 62, Through hole; 63, Sealing plate; 64, Liquid inlet hole; 65, Lifting groove; 66, Guide rod; 67, Spring; 68, Slide block; 69, Water curtain head; 71, Positioning pin; 72, Positioning hole. Detailed implementation manners
[0017] Next, the technical solution for separating flue gas oil droplet particulates 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. Obviously, the described embodiments are only a 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] It includes a cyclone filter 10. As Figure 1 - Figure 2 shown, the cyclone filter 10 further includes a separation chamber 11 and an air inlet passage 14 provided inside the separation chamber 11. A flue gas inlet 12 and a flue gas outlet 13 are installed on the separation chamber 11, and the flue gas outlet 13 is communicated with the air inlet passage 14. After the flue gas enters the separation chamber 11 along the tangential direction through the flue gas inlet 12, it rotates in the separation chamber 11 and generates a centrifugal force. Since the solid particles have a large mass, the large solid particles collide with the inner wall of the separation chamber 11 under the action of the centrifugal force and their speed rapidly decreases, and finally fall to the bottom of the separation chamber 11. The flue gas carrying the remaining small solid particles and liquid oil droplets enters the air inlet passage 14 and reaches the flue gas outlet 13. In order to separate the small solid particles and liquid oil droplets in the flue gas entering the flue gas outlet 13, a filtering mechanism 30 for filtering flue gas oil droplet particulates is installed on the flue gas outlet 13. As Figure 3 and Figure 8 shown, the filtering mechanism 30 includes a filter screen 31 and heat exchange fins 32 provided on the filter screen 31. The small solid particles in the flue gas are intercepted because their particle sizes are larger than the pores of the filter screen 31 and the heat exchange fins 32.
[0019] As Figure 3 , Figure 5 - Figure 7 , Figure 10 and Figure 11As shown, to prevent the pores of the filter mechanism 30 from being clogged by the solid deposit layer formed by the solidified oil film when the ambient temperature drops below the freezing point of the liquid oil droplets, a heating mechanism 20 for heating a heating medium is installed on the flue gas outlet 13. Preferably, the heating medium is water. The heating mechanism 20 includes a mounting cavity 21 sleeved on the surface of the flue gas outlet 13. The mounting cavity 21 is separated by a baffle 24 to form two spaces, each containing a liquid inlet screen 22 and a liquid outlet screen 23. Furthermore, a sleeve 25 is embedded in the flue gas outlet 13. The sleeve 25 is penetrated by two rows of seven hollow heat exchange tubes 26 extending toward the center of the sleeve 25. The seven heat exchange tubes 26 are connected and interconnected at the center of the sleeve 25. The two rows of heat exchange tubes 26 are connected by a connecting channel 27 provided in the center of the sleeve 25. Two filters 31 are disposed in the sleeve 25, and two heat exchange fins 32 are respectively attached to the two rows of heat exchange tubes 26. Two diversion holes 28 are provided on the surface of the flue gas outlet 13. The liquid inlet grid 22 and the liquid outlet grid 23 are connected to the heat exchange tube 26 through the corresponding diversion holes 28 respectively. The heating medium in the installation cavity 21 flows out from the liquid inlet grid 22 and passes through the diversion holes 28 into the heat exchange tube 26. The heating medium transfers heat to the heat exchange plate 32 attached to the heat exchange tube 26 through the heat exchange tube 26, and then transfers heat to the filter screen 31 through the heat exchange plate 32, ensuring that the temperature of the filter screen 31 is always higher than the freezing point of the liquid oil droplets. At the same time, it also has the effect of heating the liquid oil droplets. The heated liquid oil droplets are active and can reduce the formation of an adherent oil film. The heating medium in the heat exchange tube 26 flows to another row of heat exchange tubes 26 through the connecting channel 27, heats another filter screen 31, and is discharged to another diversion hole 28, and flows back to the installation cavity 21 through the liquid outlet grid 23, completing the heating process of the heating medium.
[0020] like Figure 4 and Figure 9 As shown, in order to circulate and reheat the heating medium in the installation cavity 21, liquid inlet and outlet mechanisms 40 are provided on both sides of the installation cavity 21. The liquid inlet and outlet mechanisms 40 include a liquid inlet cavity 41 fixedly installed on one side of the liquid inlet grid 22 and a liquid outlet cavity 42 rotatably provided on one side of the liquid outlet grid 23. Connectors 43 are installed on the outside of the liquid inlet cavity 41 and the liquid outlet cavity 42. The two connectors 43 are respectively connected to the heater and the pump (not shown in the figure) through pipes. The inside of the liquid inlet cavity 41 and the inside of the liquid outlet cavity 42 are respectively provided with a liquid inlet channel 44 and a liquid outlet channel 45 communicating with the installation cavity 21. The high-temperature heating medium enters the liquid inlet cavity 41 through the connector 43 and is introduced into the installation cavity 21 from the liquid inlet cavity 41 through the liquid inlet channel 44. The temperature of the heating medium decreases after heating the filter screen 31. The low-temperature heating medium is discharged from the installation cavity 21 through the liquid outlet channel 45 and enters the liquid outlet cavity 42, and flows back to the heater through the connector 43 for heating.
[0021] like Figure 9 - Figure 11 and Figure 13As shown, when the cooling rate of the filter screen 31 is too fast, the temperature control mechanism 50 provided inside the installation cavity 21 increases the flow rate of the heating medium to increase the heat exchange frequency, so that the filter screen 31 is always in a constant temperature state. The temperature control mechanism 50 includes a fixed partition plate 53 fixedly arranged on the liquid inlet grid 22 and a rotating ring 51 rotatably arranged in the middle of the installation cavity 21. The baffle plate 24 is fixedly installed on the rotating ring 51, and a movable partition plate 52 covering the grid holes of the liquid inlet grid 22 is also arranged on the rotating ring 51; A closed ring 54 is rotatably arranged on the installation cavity 21. The liquid outlet channel 45 penetrates through the closed ring 54 and is connected to the grid screen 46 installed on the baffle plate 24. By rotating the liquid outlet cavity 42, the liquid outlet cavity 42 drives the closed ring 54 to rotate under the restriction of the installation cavity 21 through the liquid outlet channel 45. The liquid outlet channel 45 drives the baffle plate 24 to rotate through the grid screen 46, so that the baffle plate 24 drives the movable partition plate 52 to rotate, and the included angle between the movable partition plate 52 and the fixed partition plate 53 changes. The larger the included angle, the more grid holes on the liquid inlet grid 22 that can communicate the installation cavity 21 and the shunt holes 28. Since the number of grid holes of the liquid outlet grid 23 remains unchanged, the liquid inlet area of the liquid inlet grid 22 increases under the condition of unchanged liquid outlet area, which can increase the flow rate of the heating medium in the heat exchange tube 26. It should be noted that although the residence time of the heating medium in the heat exchange tube 26 is reduced and the heat exchange efficiency is reduced, increasing the flow rate can reduce the existence time of the cooled heating medium in the heat exchange tube 26. The heating medium flowing in the heat exchange tube 26 is always high-temperature, which increases the heat exchange frequency between the heating medium and the heat exchange tube 26 and ensures that the filter screen 31 is in a constant temperature state.
[0022] As Figure 9 、 Figure 11 and Figure 13 shown, when the surface of the filtering mechanism 30 adheres to an oil film after long-term use and affects the filtering effect, the heating medium is exported through the spraying mechanism 60 arranged on the baffle plate 24 to directly wash the filter screen 31 to remove the oil film on the filter screen 31. To achieve this effect, the spraying mechanism 60 includes a communication pipe 61 arranged on the baffle plate 24 and penetrating through the rotating ring 51 and a through hole 62 opened on the flue gas outlet 13. The outlet of the communication pipe 61 penetrates through the rotating ring 51 and is inserted into the through hole 62. The communication pipe 61 is connected to the grid screen 46 and the inlet of the communication pipe 61 abuts against the liquid inlet channel 44; And, a closing plate 63 is disposed in the installation cavity 21 and horizontally aligned with the end of the liquid inlet channel 44 near the communicating pipe 61. By rotating the liquid outlet cavity 42, the liquid outlet cavity 42 drives the communicating pipe 61 to rotate under the restriction of the rotating ring 51 through the liquid outlet channel 45 and the grid 46. When the communicating pipe 61 abuts and communicates with the liquid inlet channel 44, the heating medium enters the communicating pipe 61 through the liquid inlet channel 44. When the communicating pipe 61 does not abut and communicate with the liquid inlet channel 44, the communicating pipe 61 abuts against the closing plate 63 and is closed, and the heating medium enters the installation cavity 21 through the liquid inlet channel 44.
[0023] As Figure 4 , Figure 6 - Figure 7 shown, a clamping groove 131 is formed in the inner wall of the flue gas outlet 13, and a clamping block 251 is provided on the sleeve 25 and is fitted with the clamping groove 131. When the sleeve 25 needs to be installed, by aligning the clamping block 251 with the clamping groove 131 and then pushing the sleeve 25 into the flue gas outlet 13, the sleeve 25 will not deflect under the restriction of the clamping groove 131. A liquid inlet hole 64 communicating with the through hole 62 is formed in the clamping block 251. After the sleeve 25 reaches the installation position, the liquid inlet hole 64 is coaxially arranged with the through hole 62, and the heating medium enters the liquid inlet hole 64 from the through hole 62 and reaches the sleeve 25; at least two lifting grooves 65 are formed in the inner wall of the liquid inlet hole 64, a guide rod 66 is arranged in the lifting groove 65, and a sliding block 68 is sleeved on the guide rod 66 in a sliding manner. A water curtain head 69 is installed between the sliding blocks 68. When the communicating pipe 61 abuts and communicates with the liquid inlet channel 44, the heating medium flowing out of the communicating pipe 61 reaches the liquid inlet hole 64 through the through hole 62 and pushes the water curtain head 69, so that the water curtain head 69 drives the sliding blocks 68 on both sides to move in the lifting groove 65. The sliding blocks 68 are guided by the guide rod 66 to squeeze the spring 67 to cause elastic deformation, and the water curtain head 69 moves out of the liquid inlet hole 64. Under the action of pressure, the heating medium forms a water curtain covering the filter screen 31 after contacting the water curtain head 69, and flushes the adhered oil film on the filter screen 31. After the heating medium stops pushing the water curtain head 69, the water curtain head 69 is pulled back into the liquid inlet hole 64 under the action of the elastic deformation recovery of the spring 67 to avoid affecting the filtering operation of the filter screen 31.
[0024] Further, as Figure 1 , Figure 3 and Figure 4 shown, a positioning pin 71 is slidably arranged on the separation cavity 11, and at least two positioning holes 72 fitted with the positioning pin 71 are equidistantly and circumferentially formed on the surface of the liquid outlet cavity 42. When the liquid outlet cavity 42 needs to be rotated, the positioning pin 71 is pulled out of the positioning hole 72 formed on the surface of the liquid outlet cavity 42, and the restriction of the positioning pin 71 on the liquid outlet cavity 42 is released. The liquid outlet cavity 42 can adjust the flow rate of the heating medium and the position of the communicating pipe 61 by rotation. After the rotation adjustment of the liquid outlet cavity 42 is completed, the positioning pin 71 descends and inserts into the positioning hole 72 to lock the liquid outlet cavity 42 to avoid accidental contact with the liquid outlet cavity 42 causing it to rotate.
[0025] Working principle: When it is necessary to heat the filtration mechanism 30, the heated heating medium is pumped into the liquid inlet cavity 41 by starting the pump and the heater. The heating medium enters the installation cavity 21 through the liquid inlet channel 44, passes through the liquid inlet grid 22 and the shunt holes 28, and enters the heat exchange tube 26. The heating medium conducts heat to the heat exchange fins 32 attached to the heat exchange tube 26 through the heat exchange tube 26, and then conducts the heat to the filter screen 31 through the heat exchange fins 32, ensuring that the temperature of the filter screen 31 is always higher than the freezing point of the liquid oil droplets; At the same time, the heating medium in the heat exchange tube 26 flows to another row of heat exchange tubes 26 through the connection channel 27, is discharged into another shunt hole 28 after heating another filter screen 31, and then flows back into the installation cavity 21 through the liquid outlet grid 23. The cooled heating medium enters the liquid outlet channel 45 through the grid 46, and flows back into the pump through the liquid outlet cavity 42 to form a cycle, and the medium is reheated by the heater; When the ambient temperature of use is relatively low, in order to improve the heating effect of the heat exchange tube 26, the liquid outlet cavity 42 is rotated, so that the liquid outlet cavity 42 drives the communication pipe 61 to rotate through the liquid outlet channel 45 and the grid 46. The communication pipe 61 drives the baffle 24 and the rotating ring 51 to rotate and adjust positions in the installation cavity 21. The included angle between the movable partition plate 52 and the fixed partition plate 53 expands, and the number of grid holes on the liquid inlet grid 22 that can connect the installation cavity 21 and the shunt holes 28 increases. The liquid inlet area of the liquid inlet grid 22 increases, and the flow rate of the heating medium in the heat exchange tube 26 increases. Increasing the flow rate can reduce the residence time of the cooled heating medium in the heat exchange tube 26. The heat exchange tube 26 always flows with high-temperature heating medium, ensuring that the filter screen 31 is in a constant temperature state; When it is necessary to clean the oil film adhered to the surface of the filter screen 31, the liquid outlet cavity 42 is rotated to make the communication pipe 61 abut and communicate with the liquid inlet channel 44. The heating medium flowing out of the communication pipe 61 reaches the liquid inlet hole 64 through the through hole 62 and pushes the water curtain head 69. Under the action of pressure, the heating medium forms a water curtain covering the filter screen 31 after contacting the water curtain head 69, and flushes the adhered oil film attached to the filter screen 31.
[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention for the mesh filtration mechanism for separating flue gas oil droplet particles and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.
Claims
1. A mesh filtration mechanism for separating flue gas oil droplet particles, comprising a cyclone filter (10), the cyclone filter (10) including a flue gas outlet (13), characterized in that, A filtering mechanism (30) for filtering oil droplet particles in the flue gas and a heating mechanism (20) with a heating medium stored therein are installed on the flue gas outlet (13). The filtering mechanism (30) includes a filter screen (31) and heat exchange fins (32) arranged on the filter screen (31). The heating mechanism (20) includes an installation cavity (21) sleeved on the surface of the flue gas outlet (13). In the two spaces separated by a baffle (24) in the installation cavity (21), a liquid inlet grid (22) and a liquid outlet grid (23) are respectively installed. And a sleeve (25) embedded in the flue gas outlet (13). Two rows of hollow heat exchange tubes (26) each with at least one extending towards the center of the sleeve (25) are arranged through the sleeve (25). The two rows of heat exchange tubes (26) are connected through a connection channel (27). The filter screen (31) is arranged in the sleeve (25) and the heat exchange fins (32) are in contact with the heat exchange tubes (26). Two diversion holes (28) are formed on the surface of the flue gas outlet (13). The heating medium flows out from the liquid inlet grid (22) and enters the heat exchange tubes (26) through the diversion holes (28). The heat exchange tubes (26) exchange heat with the heat exchange fins (32) to heat the filter screen (31).
2. The mesh filtration mechanism for separating flue gas oil droplet particulate matters according to claim 1, wherein Liquid inlet and outlet mechanisms (40) are arranged on both sides of the installation cavity (21). The liquid inlet and outlet mechanisms (40) include a liquid inlet cavity (41) fixedly installed on one side of the liquid inlet grid (22) and a liquid outlet cavity (42) rotatably arranged on one side of the liquid outlet grid (23). Connectors (43) are installed on the outer sides of the liquid inlet cavity (41) and the liquid outlet cavity (42). Liquid inlet channels (44) and liquid outlet channels (45) communicating with the installation cavity (21) are respectively installed on the inner sides of the liquid inlet cavity (41) and the liquid outlet cavity (42).
3. The mesh filtration mechanism for separating flue gas oil droplet particulate matters according to claim 2, wherein A temperature control mechanism (50) is arranged inside the installation cavity (21). The temperature control mechanism (50) includes a fixed partition plate (53) fixedly arranged on the liquid inlet grid (22) and a rotating ring (51) rotatably arranged in the middle of the installation cavity (21). The baffle (24) is fixedly installed on the rotating ring (51). An active partition plate (52) covering the grid holes of the liquid inlet grid (22) is also arranged on the rotating ring (51).
4. The mesh filtration mechanism for separating flue gas oil droplet particulate matters according to claim 3, characterized in that, The included angle between the active partition plate (52) and the fixed partition plate (53) is changed by rotating the rotating ring (51). As the included angle increases, the number of grid holes on the liquid inlet grid (22) that can connect the installation cavity (21) and the diversion holes (28) increases.
5. The mesh filtering mechanism for separating flue gas oil droplet particles according to claim 3, wherein A closing ring (54) is rotatably arranged on the installation cavity (21). The liquid outlet channel (45) penetrates through the closing ring (54) and is connected to a grid mesh (46) installed on the baffle (24).
6. The net-shaped filtering mechanism for separating flue gas oil-droplet particulate matters according to claim 5, characterized in that, A spraying mechanism (60) is also arranged on the baffle (24). The spraying mechanism (60) includes a communicating pipe (61) arranged on the baffle (24) and penetrating through the rotating ring (51) and a through hole (62) formed on the flue gas outlet (13). The outlet of the communicating pipe (61) penetrates through the rotating ring (51) and is inserted into the through hole (62). The communicating pipe (61) is connected to the grid mesh (46) and the inlet of the communicating pipe (61) abuts against the liquid inlet channel (44). And, a closing plate (63) is disposed in the installation cavity (21) and is horizontal with respect to the end of the liquid inlet channel (44) near the connecting pipe (61). When the connecting pipe (61) is in contact and communication with the liquid inlet channel (44), the heating medium enters the connecting pipe (61) through the liquid inlet channel (44). When the connecting pipe (61) is not in contact and communication with the liquid inlet channel (44), the connecting pipe (61) is in contact with the closing plate (63) and is closed, and the heating medium enters the installation cavity (21) through the liquid inlet channel (44).
7. The mesh filtration mechanism for separating flue gas oil droplet particulates according to claim 6, characterized in that, A clamping groove (131) is formed in the inner wall of the flue gas outlet (13). A clamping block (251) that is mutually engaged with the clamping groove (131) is provided on the sleeve (25). A liquid inlet hole (64) that communicates with the through hole (62) is formed in the clamping block (251). The heating medium enters the liquid inlet hole (64) from the through hole (62) and reaches the sleeve (25).
8. The mesh filtering mechanism for separating flue gas oil droplet particulates according to claim 7, characterized in that, At least two lifting grooves (65) are formed in the inner wall of the liquid inlet hole (64). A guide rod (66) is disposed in the lifting groove (65), and a slider (68) is slidably sleeved on the guide rod (66). A water curtain head (69) is installed between the sliders (68). After the heating medium contacts the water curtain head (69), a water curtain covering the filter screen (31) is formed.
9. The net-shaped filtering mechanism for separating flue gas oil-droplet particulate matters according to any one of claims 1-8, characterized in that, The cyclone filter (10) further includes a separation cavity (11) and a flue gas inlet (12) installed on the separation cavity (11). The flue gas outlet (13) is installed on the separation cavity (11) and communicates with an air inlet channel (14) provided inside the separation cavity (11).
10. The mesh filtration mechanism for separating flue gas oil droplet particulate matters according to claim 9, wherein A positioning pin (71) is slidably disposed on the separation cavity (11). At least two positioning holes (72) that are mutually engaged with the positioning pin (71) are equidistantly formed in a surrounding manner on the surface of the liquid outlet cavity (42). The positioning pin (71) descends and is inserted into the positioning hole (72) to lock the liquid outlet cavity (42).