Multi-stage separation oil-water separator

Abstract

The invention discloses a multistage separation oil-water separator, and relates to the technical field of oil-water separation, the multistage separation oil-water separator comprises a separator shell, a solid-liquid separation chamber, a corrugated coalescence chamber and a fiber polymerization chamber are sequentially arranged in the separator shell from top to bottom, a primary filtering mechanism is arranged in the solid-liquid separation chamber, and the primary filtering mechanism comprises a filtering cylinder, a centrifugal cylinder and a mounting plate; the mounting plate is fixed on the inner top wall of the separator shell, the filter cartridge is obliquely arranged, one end of the filter cartridge is rotatably mounted on the mounting plate, a water inlet pipeline is arranged on the separator shell, a water inlet port of the water inlet pipeline extends into the filter cartridge, the centrifugal barrel and the filter cartridge are coaxially arranged, one end of the centrifugal barrel is rotatably mounted on the mounting plate, and the other end of the centrifugal barrel is rotatably mounted on the mounting plate. The high end of the centrifugal cylinder penetrates into the bottom end of the filter cylinder, a solid waste box is arranged on the side wall of the separator shell, the end, away from the filter cylinder, of the centrifugal cylinder movably penetrates into the solid waste box, step-by-step separation is conducted in different modes according to oil-water separation characteristics, and the oil-water separation effect is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-water separation, in particular to a multi-stage separation oil-water separator. Background Art

[0002] The forms of oil in water generally include floating oil (>100μm), dispersed oil (10~100μm), emulsified oil (<10μm), dissolved oil (several microns) and solid attached oil. The floating of oil in water is directly related to its size: the larger the oil droplet size, the faster the floating speed, and the more conducive to the separation of oil and water. Therefore, the size of the oil droplets is very important for the separation effect of the oil-water separator.

[0003] Oil-water separation technology has a long history, and mainly includes gravity separation, centrifugal separation, electrical separation, adsorption separation and flotation separation. Among them, the gravity (unpowered) oil-water method has the advantages of simple structure, easy operation, stable oil removal effect, no consumption of reagents, no secondary pollution, and low operation and maintenance costs, and has been widely used. However, the gravity separation method can only effectively remove the floating oil and dispersed oil in the oily wastewater, which are larger oil droplets, and has basically no effect on the removal of dissolved oil and emulsified oil. Therefore, the oil-water separation structure of the current oil-water separation device is relatively simple, and can only be separated once or repeatedly, and it does not perform step-by-step separation according to the characteristics of the oil-water wastewater, resulting in more impurities in the oil and water. At the same time, the wastewater with small oil droplets cannot be effectively deoiled, resulting in unsatisfactory oil removal effect, which needs to be further improved. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-stage separation oil-water separator, which adopts different methods to perform step-by-step separation according to the characteristics of oil-water separation, and the oil-water separation effect is significantly improved.

[0005] The objective of the present invention is achieved through the following technical scheme: a multi-stage separation oil-water separator, comprising a separator shell, wherein the separator shell is provided with a solid-liquid separation chamber, a corrugated coalescence chamber and a fiber polymerization chamber in sequence from top to bottom, wherein a primary filtering mechanism is arranged in the solid-liquid separation chamber, the primary filtering mechanism comprises a filter cartridge, a centrifugal cartridge and a mounting plate, the mounting plate being fixed on the inner top wall of the separator shell, the filter cartridge is arranged obliquely, one end of the filter cartridge is rotatably mounted on the mounting plate, a water inlet pipe is arranged on the separator shell, a water inlet port of the water inlet pipe extends into the filter cartridge, the centrifugal cartridge is coaxially arranged with the filter cartridge, one end of the centrifugal cartridge is rotatably mounted on the mounting plate, the high end of the centrifugal cartridge penetrates into the bottom end of the filter cartridge, a solid waste box is arranged on the side wall of the separator shell, and one end of the centrifugal cartridge away from the filter cartridge movably penetrates into the solid waste box; A fine filtering mechanism is arranged below the primary filtering mechanism in the solid-liquid separation chamber, and the fine filtering mechanism comprises an upper filter frame and a lower filter frame, a plurality of transverse wires are fixed at equal intervals on the bottom of the upper filter frame, a plurality of longitudinal wires are fixed at equal intervals on the top of the lower filter frame, the transverse wires are in contact with the longitudinal wires to form a screen, and a cleaning chamber is formed at both ends of the fine filtering mechanism in the separator shell, an upper window is provided on the inner wall of the separator shell for the upper filter frame to enter one of the cleaning chambers, and a lower window is also provided on the inner wall of the separator shell for the lower filter frame to enter the other cleaning chamber.

[0006] Furthermore, a driving cavity is provided in the mounting plate, and mounting circular holes connected to the driving cavity are provided at both ends of the mounting plate, one end of the filter cartridge is adapted in one of the mounting circular holes through a first sealing ring, and one end of the centrifugal cartridge is adapted in the other mounting circular hole through a second sealing ring, a driving shaft is rotatably arranged in the driving cavity, a first gear is mounted on the driving shaft, a second gear is mounted on the centrifugal cartridge, the second gear meshes with the first gear, a motor is installed on the top of the separator housing, the output shaft of the motor is connected to a driving gear, a driving window connected to the driving cavity is provided on the top of the separator housing, and the driving gear penetrates into the driving window and meshes with the first gear.

[0007] Furthermore, a drive disk is fixedly sleeved on the drive shaft, a groove wheel is sleeved on the filter cylinder, a shift shaft is eccentrically fixed to one end of the drive disk close to the groove wheel, a plurality of arc grooves are evenly distributed on the side wall of the groove wheel along its circumferential direction, and the shift shaft is used to act in the arc groove to drive the groove wheel to deflect.

[0008] Furthermore, an annular step is formed on the inner wall of the centrifugal cylinder at one end away from the filter cylinder, a blocking rod is coaxially arranged on the end of the centrifugal cylinder away from the filter cylinder, a blocking disk is fixed to the end of the blocking rod close to the centrifugal cylinder, the blocking disk contacts the annular step to seal the bottom opening of the centrifugal cylinder, and a cylinder is installed on the outer wall of the solid waste box, and the telescopic shaft of the cylinder penetrates into the solid waste box to connect with the blocking rod.

[0009] Furthermore, a wire drive mechanism is provided at both ends of the fine filtering mechanism, the wire drive mechanism comprises a mounting frame, an upper winding roller and a lower winding roller, the upper winding roller and the lower winding roller are both rotatably arranged on the mounting frame, an upper pull wire is wound on the upper winding roller, and a lower pull wire is wound on the lower winding roller, an upper guide shaft is fixed to one end of the upper filter frame, two groups of upper pull wires of the wire drive mechanism are respectively connected to the upper guide shaft at one end of the upper filter frame and the other end of the upper filter frame, a lower guide shaft is fixed to one end of the lower filter frame, two groups of lower pull wires of the wire drive mechanism are respectively connected to the lower guide shaft at one end of the lower filter frame and the other end of the lower filter frame, one end of the upper winding roller and one end of the lower winding roller are respectively connected to an upper gear and a lower gear, the upper gear meshes with the lower gear, a driving motor is installed on the mounting frame, and the output shaft of the driving motor is drivingly connected to the other end of the upper winding roller.

[0010] Furthermore, a flushing network is provided in the cleaning chamber, a flushing hole is opened at the bottom of the flushing network, the cleaning chamber is connected to a drain pipe, a clean water pipe is provided on the separator shell, and one end of the clean water pipe penetrates into the cleaning chamber and is connected to the flushing network.

[0011] Furthermore, one of the upper guide shafts is provided with a first backwash gear, one of the lower guide shafts is provided with a second backwash gear, backwash motors are installed on the top of the shells of the two cleaning chambers, and the output shafts of the backwash motors are connected to the third backwash gear, one of the third backwash gears meshes with the first backwash gear, and the other third backwash gear meshes with the second backwash gear.

[0012] Furthermore, guide holes are provided on the inner walls of the two cleaning chambers, one of the guide holes is located on the moving path of the upper guide shaft, and the other guide hole is located on the moving path of the lower guide shaft. When the upper guide shaft is fitted into the corresponding guide hole, the upper filter frame is detached from the upper window and moved into the corresponding cleaning chamber. When the lower guide shaft is fitted into the corresponding guide hole, the lower filter frame is detached from the lower window and moved into the corresponding cleaning chamber.

[0013] Furthermore, a corrugated plate coalescer is arranged in the corrugated coalescing chamber, a first oil collecting chamber is arranged on one side of the corrugated coalescing chamber, a first oil drain window is opened on one side of the top of the corrugated coalescing chamber, and the first oil drain window is connected to the first oil collecting chamber.

[0014] Furthermore, a fiber aggregator is provided in the fiber polymerization chamber, a second oil collecting chamber is provided on one side of the fiber polymerization chamber in the separator shell, a second oil drain window is opened on one side of the top of the fiber polymerization chamber, the second oil drain window is connected to the second oil collecting chamber, the second oil collecting chamber and the second oil collecting chamber are both connected to an oil drain pipe, and the solid waste tank is connected to a sewage pipe.

[0015] The beneficial effects of the present invention are: 1. The solid and liquid are separated by the primary filtration mechanism and the fine filtration mechanism to prevent the oil from adhering to the solid waste and agglomerating into a large volume of waste, which is convenient for the subsequent oil-water separation of wastewater. The sewage containing small oil droplets enters the corrugated coalescing chamber, and is aggregated into larger oil droplets by the corrugated plate coalescer and overflows into the first oil collecting chamber. The oil droplets containing smaller particles enter the fiber polymerization chamber, and the small oil droplets are aggregated into larger oil droplets by the fiber aggregator and overflow into the second oil collecting chamber, which improves the oil-water separation effect. Different methods can be used for step-by-step separation according to the characteristics of oil-water separation, and the oil-water separation effect is significantly improved.

[0016] 2. Solid and liquid wastewater enter the filter cylinder through the water inlet pipe, and the solid and liquid are initially separated by the filter cylinder. Then the solid waste enters the centrifuge cylinder, and the solid-liquid separation is further completed through the high-speed rotation of the centrifuge cylinder. The oil attached to the solid can be effectively removed, and it has a good solid-liquid separation effect.

[0017] 3. The upper filter frame and the lower filter frame adopt a split structure, which is convenient for later cleaning and not easy to cause screen clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of a multi-stage separation oil-water separator of the present invention; Figure 2 The schematic diagram of the structure of the primary filtering mechanism in the multi-stage separation oil-water separator of the present invention is Figure 1 ; Figure 3 The schematic diagram of the structure of the primary filtering mechanism in the multi-stage separation oil-water separator of the present invention is Figure 2 ; Figure 4 It is a structural schematic diagram of a fine filtering mechanism in a multi-stage separation oil-water separator of the present invention; Figure 5 for Figure 1 Enlarged view of point A in the middle; Figure 6 for Figure 1 Enlarged view of point B in the middle; Figure 7 It is a structural schematic diagram of a multi-stage separation oil-water separator of the present invention; In the figure, 1-separator housing, 2-solid-liquid separation chamber, 3-corrugated coalescence chamber, 4-fiber polymerization chamber, 5-filter cylinder, 6-centrifugal cylinder, 7-mounting plate, 8-water inlet pipe, 9-solid waste box, 10-upper filter frame, 11-lower filter frame, 12-transverse wire, 13-longitudinal wire, 14-cleaning chamber, 15-upper window, 16-lower window, 17-drive cavity, 18-mounting circular hole, 19-drive shaft, 20-first gear, 21-second gear, 22-motor, 23-driving gear, 24-drive window, 25-drive disk, 26-groove wheel, 27-sliding shaft, 28-arc groove, 29-annular step, 30-blocking rod, 31-blocking disk, 32- Cylinder, 33-mounting frame, 34-upper winding roller, 35-lower winding roller, 36-upper pull wire, 37-lower pull wire, 38-upper guide shaft, 39-lower guide shaft, 40-flushing pipe network, 41-flushing hole, 42-drain pipe, 43-clean water pipe, 44-first backwashing gear, 45-second backwashing gear, 46-backwashing motor, 47-third backwashing gear, 48-guide hole, 50-corrugated plate agglomerator, 51-first oil collecting chamber, 52-first oil discharge window, 54-fiber agglomerator, 55-second oil collecting chamber, 56-second oil discharge window, 57-oil discharge pipe, 58-sewage discharge pipe, 59-upper gear, 60-lower gear, 61-drive motor. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0020] Embodiment 1 like Figures 1 to 7As shown, a multi-stage separation oil-water separator comprises a separator housing 1, in which a solid-liquid separation chamber 2, a corrugated coalescing chamber 3 and a fiber polymerization chamber 4 are arranged in sequence from top to bottom, a primary filtering mechanism is arranged in the solid-liquid separation chamber 2, the primary filtering mechanism comprises a filter cartridge 5, a centrifugal cartridge 6 and a mounting plate 7, the mounting plate 7 is fixed on the inner top wall of the separator housing 1, the filter cartridge 5 is arranged obliquely, one end of the filter cartridge 5 is rotatably mounted on the mounting plate 7, a water inlet pipe 8 is arranged on the separator housing 1, a water inlet port of the water inlet pipe 8 extends into the filter cartridge 5, the terminal axis of the water inlet pipe 8 is coaxial with the axis of the filter cartridge 5, so that the filter cartridge 5 will not collide with the water inlet pipe 8 when rotating, the centrifugal cartridge 6 is coaxially arranged with the filter cartridge 5, and the separator housing 1 is provided with a water inlet pipe 8. One end of the core cylinder 6 is rotatably mounted on the mounting plate 7, the high end of the centrifugal cylinder 6 penetrates into the bottom end of the filter cylinder 5, a solid waste box 9 is arranged on the side wall of the separator housing 1, and one end of the centrifugal cylinder 6 away from the filter cylinder 5 movably penetrates into the solid waste box 9; a corrugated plate agglomerator 50 is arranged in the corrugated agglomeration chamber 3, a first oil collecting chamber 51 is arranged on one side of the corrugated agglomeration chamber 3 of the separator housing 1, a first oil drain window 52 is opened on one side of the top of the corrugated agglomeration chamber 3, the first oil drain window 52 is connected to the first oil collecting chamber 51, a fiber agglomerator 54 is arranged in the fiber polymerization chamber 4, a second oil collecting chamber 55 is arranged on one side of the fiber polymerization chamber 4 of the separator housing 1, a second oil drain window 56 is opened on one side of the top of the fiber polymerization chamber 4, and the second oil drain window The port 56 is connected to the second oil collecting chamber 55, and the second oil collecting chamber 55 and the second oil collecting chamber 55 are both connected to an oil discharge pipe 57. The solid waste box 9 is connected to a sewage discharge pipe 58. The water inlet pipe 8 passes the solid and liquid wastewater into the filter cylinder 5. The rotation of the filter cylinder 5 allows the solid waste to move in the filter cylinder 5 to avoid accumulation, thereby achieving rapid separation of solid and liquid. Since the wastewater contains a large amount of oil, the oil will adhere to the solid waste, and the separation of oil and solid cannot be achieved only by filtering. Therefore, a centrifugal cylinder 6 is set at the bottom end of the filter cylinder 5. Since the filter cylinder 5 is inclined toward the centrifugal cylinder 6, the solid waste in the filter cylinder 5 enters the centrifugal cylinder 6. Through the high-speed rotation of the centrifugal cylinder 6, the oil is separated from the solid waste and enters the solid-liquid In the separation chamber 2, solid-liquid separation can be effectively completed. The oil and water filtered by the solid-liquid separation chamber 2 enter the corrugated agglomeration chamber 3, and the sewage containing small oil droplets is aggregated into larger oil droplets through the corrugated plate agglomerator 50. The oil droplets gather on the corrugated plate agglomerator 50 and finally overflow into the first oil collecting chamber 51. The oil droplets containing smaller particles enter the fiber aggregation chamber 4 with the wastewater, and the small oil droplets are aggregated into larger oil droplets through the fiber agglomerator 54. The oil droplets gather on the fiber agglomerator 54 and finally overflow into the second oil collecting chamber 55. In this way, solid-liquid separation and oil-water separation are gradually completed through multi-stage separation, which improves the oil-water separation effect. Different methods can be used for step-by-step separation according to the characteristics of oil-water separation, and the oil-water separation effect is significantly improved.

[0021] Embodiment 2 Based on the first embodiment, Figures 1 to 3 As shown, a driving cavity 17 is provided in the mounting plate 7, and mounting circular holes 18 communicating with the driving cavity 17 are provided at both ends of the mounting plate 7. One end of the filter cartridge 5 is adapted in one of the mounting circular holes 18 through a first sealing ring, thereby improving the sealing strength of the assembly position of the filter cartridge 5 and the mounting plate 7. One end of the centrifugal cartridge 6 is adapted in another mounting circular hole 18 through a second sealing ring, thereby improving the sealing strength of the assembly position of the centrifugal cartridge 6 and the mounting plate 7. A third sealing ring is provided between the outer ring of the centrifugal cartridge 6 and the inner ring of the filter cartridge 5, thereby improving the sealing performance of the matching position of the centrifugal cartridge 6 and the filter cartridge 5. The portion of the centrifugal cartridge 6 located in the driving cavity 17 is a closed ring, and similarly, the portion of the filter cartridge 5 located in the driving cavity 17 is a closed ring, thereby preventing wastewater from entering the driving cavity 17 easily. A driving shaft 19 is rotatably arranged in the driving cavity 17, a first gear 20 is mounted on the driving shaft 19, a second gear 21 is mounted on the centrifugal cylinder 6, the second gear 21 meshes with the first gear 20, a motor 22 is installed on the top of the separator housing 1, an output shaft of the motor 22 is connected with a driving gear 23, a driving window 24 connected to the driving cavity 17 is provided on the top of the separator housing 1, the driving gear 23 penetrates into the driving window 24 and meshes with the first gear 20, the motor 22 drives the first gear 20 to rotate through the driving gear 23, the first gear 20 drives the centrifugal cylinder 6 to rotate through the second gear 21, so that the centrifugal cylinder 6 rotates at a high speed, so that the solid waste in the centrifugal cylinder 6 is deoiled under the action of centrifugal force, and the oil on the solid waste can be quickly and effectively removed.

[0022] Furthermore, an annular step 29 is formed on the inner wall of the centrifugal cylinder 6 at one end away from the filter cylinder 5, a blocking rod 30 is coaxially arranged on the end of the centrifugal cylinder 6 away from the filter cylinder 5, a blocking plate 31 is fixed on the end of the blocking rod 30 close to the centrifugal cylinder 6, the blocking plate 31 contacts the annular step 29 to seal the bottom end opening of the centrifugal cylinder 6, and a cylinder 32 is installed on the outer wall of the solid waste box 9, and the telescopic shaft of the cylinder 32 penetrates into the solid waste box 9 to connect the blocking rod 30. During centrifugal deoiling, the cylinder 32 drives the blocking rod 30 to move close to the centrifugal cylinder 6, so that the blocking plate 31 enters the centrifugal cylinder 6 and abuts against the annular step 29, thereby sealing the lower end opening of the centrifugal cylinder 6 to prevent solid waste from leaking. The solid waste falls into the solid waste bin 9 without being centrifugally deoiled. The blocking disk 31 and the annular step 29 are polished to make the friction between the contact surfaces very small and do not affect the high-speed rotation of the centrifugal cylinder 6. The centrifugal time of the centrifugal cylinder 6 is set. After the centrifugal time is reached, the centrifugal cylinder 6 stops rotating. At this time, the cylinder 32 drives the blocking disk 31 to separate from the centrifugal cylinder 6, so that the solid waste in the centrifugal cylinder 6 falls into the solid waste bin 9. The dropping time is set. After the specified time is reached, the cylinder 32 drives the blocking disk 31 again to seal the lower end opening of the centrifugal cylinder 6, and the centrifugal cylinder 6 is centrifugally deoiled again. This is repeated to achieve a cycle of deoiling and dropping.

[0023] Embodiment 3 Based on the second embodiment, Figures 1 to 3 As shown, a driving disc 25 is fixedly sleeved on the driving shaft 19, and a groove wheel 26 is sleeved on the filter cartridge 5. A toggle shaft 27 is eccentrically fixed to one end of the driving disc 25 close to the groove wheel 26. The side wall of the groove wheel 26 is evenly provided with a plurality of arc grooves 28 along its own circumferential direction. The toggle shaft 27 is used to act in the arc groove 28 to drive the groove wheel 26 to deflect. The filter cartridge 5 also needs to rotate. On the one hand, it can avoid the accumulation of solid waste, and on the other hand, it can move the solid waste so that the solid waste can enter the centrifugal cartridge 6. The rotation speed of the filter cartridge 5 needs to be set slower, which cannot be satisfied by traditional gear transmission. The main reason is that the gear transmission with a large transmission ratio has a large volume difference, and the installation space in the mounting plate 7 is limited, which is not suitable for the installation of gears with a large transmission ratio. Therefore, a groove wheel 26 is installed on the filter cartridge 5, and the motor 22 is driven by the active gear. The meshing of the wheel 23 and the first gear 20 drives the drive shaft 19 to rotate, the drive shaft 19 drives the drive disk 25 to rotate, the drive disk 25 drives the toggle shaft 27 to rotate, and when the toggle shaft 27 runs to the bottom, it will enter one of the arc grooves 28, thereby driving the groove wheel 26 to rotate one grid, the number of grids of the groove wheel 26 is equal to the number of arc grooves 28, so that the next arc groove 28 is located on the rotation path of the toggle shaft 27, and the toggle shaft 27 enters the next arc groove 28 after rotating one circle, and drives the groove wheel 26 to deflect one grid again. Therefore, every time the drive disk 25 rotates one circle, it drives the groove wheel 26 to deflect one grid, thereby greatly reducing the rotation speed of the groove wheel 26, so that the groove wheel 26 drives the filter drum 5 to rotate slowly, so that the centrifugal drum 6 and the filter drum 5 share the same driving source, and also meet the rotation speed requirements of the centrifugal drum 6 and the filter drum 5.

[0024] Embodiment 4 Based on the third embodiment, Figures 1 to 4As shown, a fine filtering mechanism is arranged below the primary filtering mechanism in the solid-liquid separation chamber 2, and the fine filtering mechanism includes an upper filter frame 10 and a lower filter frame 11. A plurality of transverse wires 12 are fixed at equal intervals on the bottom of the upper filter frame 10, and a plurality of longitudinal wires 13 are fixed at equal intervals on the top of the lower filter frame 11. The transverse wires 12 contact with the longitudinal wires 13 to form a screen. The separator housing 1 is formed with cleaning chambers 14 at both ends of the fine filtering mechanism. An upper window 15 for the upper filter frame 10 to enter one of the cleaning chambers 14 is provided on the inner wall of the separator housing 1. A lower window 16 for the lower filter frame 11 to enter another cleaning chamber 14 is also provided on the inner wall of the separator housing 1. The wastewater treated by the structure also contains a large number of tiny impurities, which are easily gathered together under the action of oil to form large impurities, which are easy to cause the clogging of the corrugated plate coalescer 50 and the fiber aggregator 54, affecting their service life and increasing the subsequent maintenance costs. For this reason, a fine filtering mechanism is also arranged in the solid-liquid separation chamber 2. The wastewater passing through the primary filtering mechanism is finely filtered through the fine filtering mechanism to remove the tiny impurities in the wastewater. The tiny impurities are blocked by the screen composed of the transverse wires 12 and the longitudinal wires 13 to achieve the effect of removing the tiny impurities in the wastewater. Since the aperture of the screen is very small, the screen is easily blocked, affecting the filtering effect. As a result, the fine filtering mechanism needs to be frequently maintained in later use, which is very inconvenient. For this reason, the fine filtering mechanism is set to a split structure, and the upper filter frame 10 and the lower filter frame 11 are combined in a contact manner to form a screen. This design enables the fine filtering mechanism to be dredged online without manual maintenance. The specific online dredging process is: the upper filter frame 10 can be moved into the connected cleaning chamber 14 through the upper window 15, and the lower filter frame 11 is moved into another connected cleaning chamber 14 through the lower window 16, so that the upper filter frame 10 and the lower filter frame 11 are staggered in the horizontal direction, so that the upper filter frame 10 is separated from the lower filter frame 11, and the upper filter frame 10 and the lower filter frame 11 are dredged in the cleaning chamber 14. The lower filter frame 11 is flushed or vibrated to clear the impurities attached to the transverse wires 12 and the longitudinal wires 13 so that they can fall into the cleaning chamber 14, thereby quickly completing the cleaning of the fine filtering mechanism. After the cleaning is completed, the upper filter frame 10 and the lower filter frame 11 are moved and reset so that the transverse wires 12 and the longitudinal wires 13 are re-contacted to form a screen. It is worth noting that, in order to ensure the sealing performance, sealing rings are arranged on the inner wall of the upper window 15 and the inner wall of the lower window 16, and the inner rings of the two sealing rings are in a compressed state to contact the upper filter frame 10 and the lower filter frame 11 respectively, so that there is a good sealing performance between the upper window 15 and the upper filter frame 10, and between the lower window 16 and the lower filter frame 11.

[0025] Furthermore, if Figures 1 to 6As shown, both ends of the fine filtering mechanism are provided with a wire drive mechanism, the wire drive mechanism includes a mounting frame 33, an upper winding roller 34 and a lower winding roller 35, the upper winding roller 34 and the lower winding roller 35 are both rotatably arranged on the mounting frame 33, an upper pull wire 36 is wound around the upper winding roller 34, a lower pull wire 37 is wound around the lower winding roller 35, an upper guide shaft 38 is fixed to one end of the upper filter frame 10, the upper pull wires 36 of the two sets of wire drive mechanisms are respectively connected to the upper guide shaft 38 at one end of the upper filter frame 10 and the other end of the upper filter frame 10, a lower guide shaft 39 is fixed to one end of the lower filter frame 11, and the lower pull wires 37 of the two sets of wire drive mechanisms are respectively connected to the lower guide shaft 39 at one end of the lower filter frame 11 and the lower filter At the other end of the frame 11, one end of the upper winding roller 34 and one end of the lower winding roller 35 are respectively connected with an upper gear 59 and a lower gear 60, the upper gear 59 meshes with the lower gear 60, and a driving motor 61 is installed on the mounting frame 33. The output shaft of the driving motor 61 is transmission-connected with the other end of the upper winding roller 34, and the upper filter frame 10 and the lower filter frame 11 are driven to move by winding, which has the advantages of small aperture, low sealing requirement and small installation space. The driving motor 61 drives the upper winding roller 34 to rotate, and the upper winding roller 34 drives the lower winding roller 35 to rotate through the meshing of the upper gear 59 and the lower gear 60. Under the action of the gear drive, the rotation direction of the upper winding roller 34 and the lower winding roller 35 are The lower winding roller 35 rotates in the opposite direction, so that when the upper winding roller 34 reels the upper pull wire 36, the lower winding roller 35 releases the lower pull wire 37, so that the upper filter frame 10 and the lower filter frame 11 can move in opposite directions; the specific cleaning process of the fine filtering mechanism is: the wire drive mechanism on the right reels the upper pull wire 36, and the wire drive mechanism on the left releases the upper pull wire 36, so that one set of wire drive mechanisms releases the wire and the other rewinds the wire, so that there will be no interference, and one release and one rewind causes the upper filter frame 10 to move to the right cleaning chamber 14. Since the upper winding roller 34 and the lower winding roller 35 rotate in opposite directions, the wire drive mechanism on the right releases the lower pull wire 37, and the wire drive mechanism on the left rewinds the lower pull wire 37, so that the lower filter frame 11 moves to the cleaning chamber on the left, so that the upper filter frame 10 and the lower filter frame 11 respectively enter the two cleaning chambers 14 for cleaning operations. When the cleaning is completed, the right wire drive mechanism releases the upper pull wire 36, and the left wire drive mechanism reels up the upper pull wire 36. At this time, the left upper pull wire 36 will pull the upper filter frame 10 to move to the solid-liquid separation chamber 2. At the same time, the right wire drive mechanism will reel in the lower pull wire 37, and the left wire drive mechanism will release the lower pull wire 37, so that the right lower pull wire 37 will pull the lower filter frame 11 to move to the solid-liquid separation chamber 2, completing the resetting of the upper filter frame 10 and the lower filter frame 11, and realizing the online cleaning of the fine filtering mechanism.

[0026] Embodiment 5 Based on the fourth embodiment, Figures 1 to 7As shown, a flushing network 40 is provided in the cleaning chamber 14, a flushing hole 41 is provided at the bottom of the flushing network 40, the cleaning chamber 14 is connected to a drain pipe 42, a clean water pipe 43 is provided on the separator shell 1, one end of the clean water pipe 43 penetrates into the cleaning chamber 14 and is connected to the flushing network 40, and the upper filter frame 10 and the lower filter frame 11 are cleaned by water flushing. The flushing network 40 is connected by a plurality of longitudinal tubes and transverse tubes in a grid shape, and flushing holes 41 are provided at the bottom of the longitudinal tube and the bottom of the transverse tube, so that the flushing network 40 can cover the transverse wire 12 and the longitudinal wire 13 for cleaning.

[0027] Embodiment 6 In order to improve the cleaning effect of the transverse wire 12 and the longitudinal wire 13, on the basis of the fifth embodiment, as Figures 1 to 6As shown, one of the upper guide shafts 38 is provided with a first backwashing gear 44, and one of the lower guide shafts 39 is provided with a second backwashing gear 45. Backwashing motors 46 are installed on the top of the shells of the two cleaning chambers 14. The output shaft of the backwashing motor 46 is connected to a third backwashing gear 47, one of the third backwashing gears 47 meshes with the first backwashing gear 44, and the other third backwashing gear 47 meshes with the second backwashing gear 45. Guide holes 48 are provided on the inner walls of the two cleaning chambers 14, one of the guide holes 48 is located on the moving path of the upper guide shaft 38, and the other guide hole is located on the moving path of the lower guide shaft 39. When the upper guide shaft 38 is adapted to the corresponding guide hole 48, the upper filter frame 10 is separated from the upper window The filter housing 10 is a filter housing 11, and the filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. The filter housing 11 is a filter housing 11. 5 is separated, the first backwashing gear 44 is meshed with the third backwashing gear 47, and the position of the upper filter frame 10 is further positioned through the cooperation of the upper guide shaft 38 and the guide hole 48. Since the upper guide shaft 38 can rotate in the guide hole 48, the upper filter frame 10 has a rotational freedom. The flushing pipe network 40 first flushes the front of the upper filter frame 10, and then the backwashing motor 46 drives the upper filter frame 10 to rotate 180° through the meshing of the first backwashing gear 44 and the third backwashing gear 47, and then the upper filter frame 10 is backwashed, which further improves the cleaning effect of the upper filter frame 10. Since the upper filter frame 10 is driven by the upper pull wire 36, the upper pull wire 36 is coaxial with the rotation axis of the upper filter frame 10 to ensure that the upper filter frame 10 can smoothly deflect 180°. When cleaning is completed, the backwash motor 46 reverses to deflect the upper filter frame 10 by 180° and resets. The upper pull wire 36 is reset in a reverse manner so that it will not be twisted off. Then the upper filter frame 10 resets and moves to the solid-liquid separation chamber 2. The upper filter frame 10 first enters the upper window 15, and the upper guide shaft 38 is then separated from the guide hole 48, so that the movement of the upper filter frame 10 can always be guided, so that the upper filter frame 10 can accurately pass through the upper window 15 and move to the solid-liquid separation chamber 2. At the same time, during cleaning, the first backwash gear 44 can accurately mesh with the third backwash gear 47 to ensure the stability of the structure. The cleaning method of the lower filter frame 11 is the same as that of the upper filter frame 10, which will not be repeated here.It is worth noting that in order to avoid interference between the first backwashing gear 44 and the upper pull wire 36 and the lower pull wire 37, and the second backwashing gear 45 and the upper pull wire 36 and the lower pull wire 37, a plurality of fixed pulleys are arranged in the cleaning chamber 14, so that the upper pull wire 36 and the lower pull wire 37 are wound around the fixed pulleys for wiring, and the fixed pulleys are used to change the direction of the force, so that the upper pull wire 36 and the lower pull wire 37 can avoid the first backwashing gear 44, the second backwashing gear 45 and the third backwashing gear 47, so that the cleaning operation of the fine filtering mechanism can be completed stably and reliably. ;

Claims

1. A multi-stage separation oil-water separator, comprising a separator housing (1), characterized in that: The separator housing (1) is provided with a solid-liquid separation chamber (2), a corrugated coalescence chamber (3) and a fiber polymerization chamber (4) in order from top to bottom. The solid-liquid separation chamber (2) is provided with a primary filtering mechanism, the primary filtering mechanism comprising a filter cartridge (5), a centrifugal cartridge (6) and a mounting plate (7). The mounting plate (7) is fixed to the inner top wall of the separator housing (1). The filter cartridge (5) is arranged obliquely. One end of the filter cartridge (5) is rotatably mounted on the mounting plate (7). The separator housing (1) A water inlet pipe (8) is arranged on the separator housing (1), the water inlet port of the water inlet pipe (8) extends into the filter cartridge (5), the centrifugal cartridge (6) is coaxially arranged with the filter cartridge (5), one end of the centrifugal cartridge (6) is rotatably mounted on the mounting plate (7), the upper end of the centrifugal cartridge (6) penetrates into the lower end of the filter cartridge (5), a solid waste box (9) is arranged on the side wall of the separator housing (1), and one end of the centrifugal cartridge (6) away from the filter cartridge (5) movably penetrates into the solid waste box (9); A fine filtering mechanism is arranged below the primary filtering mechanism in the solid-liquid separation chamber (2), the fine filtering mechanism comprising an upper filter frame (10) and a lower filter frame (11), a plurality of transverse wires (12) being fixed at equal intervals on the bottom of the upper filter frame (10), a plurality of longitudinal wires (13) being fixed at equal intervals on the top of the lower filter frame (11), the transverse wires (12) and the longitudinal wires (13) being in contact with each other to form a screen, the separator housing (1) having cleaning chambers (14) formed at both ends of the fine filtering mechanism, an upper window (15) being provided on the inner wall of the separator housing (1) for the upper filter frame (10) to enter one of the cleaning chambers (14), and a lower window (16) being provided on the inner wall of the separator housing (1) for the lower filter frame (11) to enter the other cleaning chamber (14).

2. The multi-stage separation oil-water separator according to claim 1, characterized in that: A driving cavity (17) is provided in the mounting plate (7), and mounting circular holes (18) communicating with the driving cavity (17) are provided at both ends of the mounting plate (7). One end of the filter cartridge (5) is fitted into one of the mounting circular holes (18) via a first sealing ring, and one end of the centrifugal cartridge (6) is fitted into the other mounting circular hole (18) via a second sealing ring. A driving shaft (19) is rotatably provided in the driving cavity (17), a first gear (20) is sleeved on the driving shaft (19), a second gear (21) is sleeved on the centrifugal cartridge (6), and the second gear (21) meshes with the first gear (20). A motor (22) is installed on the top of the separator housing (1), and an output shaft of the motor (22) is connected to a driving gear (23). A driving window (24) communicating with the driving cavity (17) is provided on the top of the separator housing (1), and the driving gear (23) penetrates into the driving window (24) and meshes with the first gear (20).

3. The multi-stage separation oil-water separator according to claim 2, characterized in that: A driving disc (25) is fixedly sleeved on the driving shaft (19), a groove wheel (26) is sleeved on the filter cartridge (5), a shifting shaft (27) is eccentrically fixed to one end of the driving disc (25) close to the groove wheel (26), a side wall of the groove wheel (26) is uniformly provided with a plurality of arc grooves (28) along its circumferential direction, and the shifting shaft (27) is used to act in the arc grooves (28) to drive the groove wheel (26) to deflect.

4. The multi-stage separation oil-water separator according to claim 3, characterized in that: An annular step (29) is formed on the inner wall of the end of the centrifugal cylinder (6) away from the filter cylinder (5); a blocking rod (30) is coaxially arranged on the end of the centrifugal cylinder (6) away from the filter cylinder (5); a blocking plate (31) is fixed to the end of the blocking rod (30) close to the centrifugal cylinder (6); the blocking plate (31) contacts the annular step (29) to seal the bottom opening of the centrifugal cylinder (6); a cylinder (32) is installed on the outer wall of the solid waste box (9); the telescopic shaft of the cylinder (32) penetrates into the solid waste box (9) and is connected to the blocking rod (30).

5. The multi-stage separation oil-water separator according to claim 1, characterized in that: A wire drive mechanism is provided at both ends of the fine filtering mechanism, the wire drive mechanism comprising a mounting frame (33), an upper wire winding roller (34) and a lower wire winding roller (35), the upper wire winding roller (34) and the lower wire winding roller (35) are both rotatably arranged on the mounting frame (33), an upper pull wire (36) is wound around the upper wire winding roller (34), and a lower pull wire (37) is wound around the lower wire winding roller (35), an upper guide shaft (38) is fixed to one end of the upper filter frame (10), and two groups of upper pull wires (36) of the wire drive mechanism are respectively connected to the upper guide shaft (38) at one end of the upper filter frame (10) and the upper filter frame (10). ), a lower guide shaft (39) is fixed to one end of the lower filter frame (11), two sets of lower pull wires (37) of the wire drive mechanism are respectively connected to the lower guide shaft (39) at one end of the lower filter frame (11) and the other end of the lower filter frame (11), one end of the upper winding roller (34) and one end of the lower winding roller (35) are respectively connected to an upper gear (59) and a lower gear (60), the upper gear (59) meshes with the lower gear (60), and a driving motor (61) is installed on the mounting frame (33), and the output shaft of the driving motor (61) is drivingly connected to the other end of the upper winding roller (34).

6. The multi-stage separation oil-water separator according to claim 5, characterized in that: A flushing pipe network (40) is arranged in the cleaning chamber (14), a flushing hole (41) is provided at the bottom of the flushing pipe network (40), the cleaning chamber (14) is connected to a drain pipe (42), a clean water pipe (43) is arranged on the separator housing (1), one end of the clean water pipe (43) penetrates into the cleaning chamber (14) and is connected to the flushing pipe network (40).

7. The multi-stage separation oil-water separator according to claim 6, characterized in that: A first backwashing gear (44) is sleeved on one of the upper guide shafts (38), a second backwashing gear (45) is sleeved on one of the lower guide shafts (39), a backwashing motor (46) is mounted on the top of the shell of each of the two cleaning chambers (14), an output shaft of the backwashing motor (46) is connected to a third backwashing gear (47), one of the third backwashing gears (47) is meshed with the first backwashing gear (44), and the other of the third backwashing gears (47) is meshed with the second backwashing gear (45).

8. The multi-stage separation oil-water separator according to claim 7, characterized in that: Guide holes (48) are provided on the inner walls of the two cleaning chambers (14), one of the guide holes (48) being located on the moving path of the upper guide shaft (38), and the other of the guide holes being located on the moving path of the lower guide shaft (39). When the upper guide shaft (38) is fitted into the corresponding guide hole (48), the upper filter frame (10) is separated from the upper window (15) and moves into the corresponding cleaning chamber (14); and when the lower guide shaft (39) is fitted into the corresponding guide hole (48), the lower filter frame (11) is separated from the lower window (16) and moves into the corresponding cleaning chamber (14).

9. The multi-stage separation oil-water separator according to claim 1, characterized in that: A corrugated plate coalescer (50) is arranged in the corrugated coalescing chamber (3); a first oil collecting chamber (51) is arranged on one side of the corrugated coalescing chamber (3) in the separator housing (1); a first oil drain window (52) is opened on one side of the top of the corrugated coalescing chamber (3); the first oil drain window (52) is connected to the first oil collecting chamber (51).

10. The multi-stage separation oil-water separator according to claim 9, characterized in that: A fiber aggregator (54) is arranged in the fiber aggregation chamber (4); a second oil collecting chamber (55) is arranged on one side of the fiber aggregation chamber (4) of the separator housing (1); a second oil drain window (56) is opened on one side of the top of the fiber aggregation chamber (4); the second oil drain window (56) is connected to the second oil collecting chamber (55); the second oil collecting chamber (55) and the second oil collecting chamber (55) are both connected to an oil drain pipe (57); and the solid waste tank (9) is connected to a sewage drain pipe (58).

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