A multi-stage separation oil-water separator

Abstract

The present invention discloses a multi-stage separation oil-water separator, which relates to the technical field of oil-water separation. It includes a separator housing. Inside the separator housing, a solid-liquid separation chamber, a corrugated coalescence chamber, and a fiber polymerization chamber are sequentially arranged from top to bottom. An initial filtration mechanism is arranged in the solid-liquid separation chamber. The initial filtration mechanism includes a filter cylinder, a centrifugal cylinder, and a mounting plate member. The mounting plate member is fixed on the inner top wall of the separator housing. The filter cylinder is inclined, and one end of the filter cylinder is rotatably mounted on the mounting plate member. An inlet pipe is arranged on the separator housing, and the inlet port of the inlet pipe extends into the filter cylinder. The centrifugal cylinder is coaxially arranged with the filter cylinder, and one end of the centrifugal cylinder is rotatably mounted on the mounting plate member. 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 housing, and the end of the centrifugal cylinder away from the filter cylinder movably penetrates into the solid waste box. According to the characteristics of oil-water separation, different methods are adopted for step-by-step separation, and the oil-water separation effect is significantly 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;

[0006] A fine filtration mechanism is arranged below the primary filtration mechanism in the solid-liquid separation chamber. The fine filtration mechanism includes an upper filter frame and a lower filter frame. A plurality of transverse wires are fixedly arranged at equal intervals at the bottom of the upper filter frame, and a plurality of longitudinal wires are fixedly arranged at equal intervals at the top of the lower filter frame. The transverse wires and the longitudinal wires are in contact to form a sieve mesh. Cleaning chambers are formed at both ends of the separator housing for the fine filtration mechanism. An upper window for the upper filter frame to enter one of the cleaning chambers is formed in the inner wall of the separator housing, and a lower window for the lower filter frame to enter the other cleaning chamber is also formed in the inner wall of the separator housing.

[0007] Further, a driving cavity is arranged inside the mounting plate member. Mounting circular holes communicating with the driving cavity are formed at both ends of the mounting plate member. One end of the filter cylinder is adapted to fit into one of the mounting circular holes through a first sealing ring, and one end of the centrifugal cylinder is adapted to fit into the other mounting circular hole through a second sealing ring. A driving shaft is rotatably arranged in the driving cavity. A first gear is sleeved on the driving shaft, and a second gear is sleeved on the centrifugal cylinder. The second gear meshes with the first gear. A motor is installed at the top of the separator housing, and an output shaft of the motor is connected with a driving gear. A driving window communicating with the driving cavity is formed at the top of the separator housing, and the driving gear penetrates into the driving window to mesh with the first gear.

[0008] Further, a driving disc is fixedly sleeved on the driving shaft, and a grooved pulley is sleeved on the filter cylinder. A toggle shaft is eccentrically fixed at one end of the driving disc close to the grooved pulley. A plurality of arc-shaped grooves are uniformly arranged on the side wall of the grooved pulley along the circumferential direction of the grooved pulley itself. The toggle shaft is used to act in the arc-shaped grooves to drive the grooved pulley to deflect.

[0009] Further, an annular step is formed on the inner wall of the end of the centrifugal cylinder far from the filter cylinder. A plug rod is coaxially arranged at the end of the centrifugal cylinder far from the filter cylinder. A plug disc is fixed at one end of the plug rod close to the centrifugal cylinder. The plug disc contacts the annular step to seal the bottom opening of the centrifugal cylinder. A cylinder is installed on the outer wall of the solid waste box, and a telescopic shaft of the cylinder penetrates into the solid waste box to be connected with the plug rod.

[0010] Further, wire driving mechanisms are arranged at both ends of the fine filtration mechanism. The wire driving mechanism includes a mounting frame, an upper wire winding roller, and a lower wire winding roller. The upper wire winding roller and the lower wire winding roller are both rotatably arranged on the mounting frame. An upper pulling wire is wound around the upper wire winding roller, and a lower pulling wire is wound around the lower wire winding roller. One end of the upper filter frame is fixed with an upper guiding shaft. The upper pulling wires of the two wire driving mechanisms are respectively connected to the upper guiding shaft at one end of the upper filter frame and the other end of the upper filter frame. One end of the lower filter frame is fixed with a lower guiding shaft. The lower pulling wires of the two wire driving mechanisms are respectively connected to the lower guiding shaft at one end of the lower filter frame and the other end of the lower filter frame. One end of the upper wire winding roller and one end of the lower wire winding roller are respectively connected with 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 in transmission connection with the other end of the upper wire winding roller.

[0011] Further, a flushing pipe network is arranged in the cleaning chamber. Flushing holes are opened at the bottom of the flushing pipe network. The cleaning chamber is connected with a drain pipe. A clean water pipe is arranged on the separator housing. One end of the clean water pipe penetrates into the cleaning chamber and is connected to the flushing pipe network.

[0012] Further, a first backwashing gear is sleeved on one of the upper guiding shafts, and a second backwashing gear is sleeved on one of the lower guiding shafts. Anti-backwashing motors are installed on the tops of the shells of the two cleaning chambers. The output shafts of the anti-backwashing motors are connected with third backwashing gears. One of the third backwashing gears meshes with the first backwashing gear, and the other third backwashing gear meshes with the second backwashing gear.

[0013] Further, guiding holes are opened on the inner walls of the two cleaning chambers. One of the guiding holes is located on the moving path of the upper guiding shaft, and the other guiding hole is located on the moving path of the lower guiding shaft. When the upper guiding shaft fits into the corresponding guiding hole, the upper filter frame moves out of the upper window and into the corresponding cleaning chamber. When the lower guiding shaft fits into the corresponding guiding hole, the lower filter frame moves out of the lower window and into the corresponding cleaning chamber.

[0014] Further, a corrugated plate coalescer is arranged in the corrugated coalescing chamber. The separator housing is provided with a first oil collecting chamber on one side of the corrugated coalescing chamber. A first oil draining window is opened on one side of the top of the corrugated coalescing chamber, and the first oil draining window communicates with the first oil collecting chamber.

[0015] Further, a fiber aggregator is provided in the fiber aggregation chamber. A second oil collection chamber is provided on one side of the separator housing in the fiber aggregation chamber. A second oil drainage window is opened on one side of the top of the fiber aggregation chamber. The second oil drainage window communicates with the second oil collection chamber. Drainage pipes are connected to both the second oil collection chamber and the first oil collection chamber. A sewage pipe is connected to the solid waste box.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The solid-liquid separation is achieved through the primary filtration mechanism and the fine filtration mechanism, avoiding the aggregation of oil on solid waste into large-volume waste, facilitating subsequent oil-water separation of wastewater. The sewage containing small oil droplets enters the corrugated coalescence chamber, where they coalesce into larger oil droplets through the corrugated plate coalescer and overflow into the first oil collection chamber. The oil droplets containing smaller particles enter the fiber aggregation chamber, where the fine oil droplets are aggregated into larger oil droplets through the fiber aggregator and overflow into the second oil collection chamber, improving the oil-water separation effect. Different methods can be used for step-by-step separation according to the characteristics of oil-water separation, significantly enhancing the oil-water separation effect.

[0018] 2. The solid-liquid wastewater enters the filter cylinder through the water inlet pipe, and the solid-liquid is preliminarily separated by the filter cylinder. Then the solid waste enters the centrifugal cylinder, and the solid-liquid separation is further completed through the high-speed rotation of the centrifugal cylinder, effectively removing the oil adhering to the solid, with a good solid-liquid separation effect.

[0019] 3. The upper filter frame and the lower filter frame adopt a split structure, which is convenient for later cleaning and is not easily blocked by the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic internal structure diagram of a multi-stage separation oil-water separator of the present invention;

[0021] Figure 2 is a schematic structural diagram of the primary filtration mechanism in a multi-stage separation oil-water separator of the present invention Figure 1 ;

[0022] Figure 3 is a schematic structural diagram of the primary filtration mechanism in a multi-stage separation oil-water separator of the present invention Figure 2 ;

[0023] Figure 4 is a schematic structural diagram of the fine filtration mechanism in a multi-stage separation oil-water separator of the present invention;

[0024] Figure 5 is Figure 1 the enlarged view at A in

[0025] Figure 6 is Figure 1 the enlarged view at B in

[0026] Figure 7 It is a structural schematic diagram of a multi-stage separation oil-water separator of the present invention;

[0027] 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

[0028] 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.

[0029] Embodiment 1

[0030] like Figures 1 to 7As shown in the figure, a multi-stage separation oil-water separator includes a separator housing 1. Inside the separator housing 1, a solid-liquid separation chamber 2, a corrugated coalescence chamber 3, and a fiber polymerization chamber 4 are sequentially arranged from top to bottom. An initial filtration mechanism is provided in the solid-liquid separation chamber 2. The initial filtration mechanism includes a filter cylinder 5, a centrifugal cylinder 6, and a mounting plate member 7. The mounting plate member 7 is fixed on the inner top wall of the separator housing 1. The filter cylinder 5 is inclined. One end of the filter cylinder 5 is rotatably installed on the mounting plate member 7. An inlet water pipe 8 is provided on the separator housing 1. The inlet port of the inlet water pipe 8 extends into the filter cylinder 5. The axis of the end of the inlet water pipe 8 is coaxial with the axis of the filter cylinder 5, so that the filter cylinder 5 will not collide with the inlet water pipe 8 when rotating. The centrifugal cylinder 6 is arranged coaxially with the filter cylinder 5. One end of the centrifugal cylinder 6 is rotatably installed on the mounting plate member 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 provided on the side wall of the separator housing 1. One end of the centrifugal cylinder 6 away from the filter cylinder 5 movably penetrates into the solid waste box 9; A corrugated plate coalescer 50 is provided in the corrugated coalescence chamber 3. A first oil collection chamber 51 is provided on one side of the separator housing 1 in the corrugated coalescence chamber 3. A first oil drainage window 52 is opened on one side of the top of the corrugated coalescence chamber 3. The first oil drainage window 52 communicates with the first oil collection chamber 51. A fiber polymerizer 54 is provided in the fiber polymerization chamber 4. A second oil collection chamber 55 is provided on one side of the separator housing 1 in the fiber polymerization chamber 4. A second oil drainage window 56 is opened on one side of the top of the fiber polymerization chamber 4. The second oil drainage window 56 communicates with the second oil collection chamber 55. Drainage pipes 57 are connected to both the second oil collection chamber 55 and the first oil collection chamber 55. A sewage discharge pipe 58 is connected to the solid waste box 9. The inlet water pipe 8 passes the solid-liquid wastewater into the filter cylinder 5. Through the rotation of the filter cylinder 5, the solid waste moves in the filter cylinder 5 to avoid accumulation, realizing the rapid separation of solid and liquid. Since the wastewater contains a large amount of oil, the oil will adhere to the solid waste. It is impossible to separate the oil from the solid only by filtration. Therefore, a centrifugal cylinder 6 is provided at the bottom end of the filter cylinder 5. Since the filter cylinder 5 is inclined towards 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 separation chamber 2, so that the solid-liquid separation can be effectively completed. The oil-water filtered by the solid-liquid separation chamber 2 enters the corrugated coalescence chamber 3. The sewage containing small oil droplets is polymerized into larger oil droplets by the corrugated plate coalescer 50. The oil droplets gather on the corrugated plate coalescer 50 and finally overflow into the first oil collection chamber 51. The oil droplets containing smaller particles enter the fiber polymerization chamber 4 with the wastewater. The fiber polymerizer 54 polymerizes the fine oil droplets into larger oil droplets. The oil droplets gather on the fiber polymerizer 54 and finally overflow into the second oil collection chamber 55. Thus, the solid-liquid separation and oil-water separation are gradually completed through multi-stage separation, improving 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.

[0031] Embodiment 2

[0032] Based on the first embodiment, as Figures 1 to 3 shown, a driving cavity 17 is provided inside the mounting plate member 7. Installation round holes 18 communicating with the driving cavity 17 are opened at both ends of the mounting plate member 7. One end of the filter cylinder 5 is fitted in one of the installation round holes 18 through a first sealing ring to improve the sealing strength of the assembly position between the filter cylinder 5 and the mounting plate member 7. One end of the centrifugal cylinder 6 is fitted in the other installation round hole 18 through a second sealing ring to improve the sealing strength of the assembly position between the centrifugal cylinder 6 and the mounting plate member 7. A third sealing ring is provided between the outer ring of the centrifugal cylinder 6 and the inner ring of the filter cylinder 5 to improve the sealing performance of the mating position between the centrifugal cylinder 6 and the filter cylinder 5. The part of the centrifugal cylinder 6 located inside the driving cavity 17 is a closed ring. Similarly, the part of the filter cylinder 5 located inside the driving cavity 17 is a closed ring, making it difficult for wastewater to enter the driving cavity 17. A driving shaft 19 is rotatably provided inside the driving cavity 17. A first gear 20 is sleeved on the driving shaft 19. A second gear 21 is sleeved on the centrifugal cylinder 6. The second gear 21 meshes with the first gear 20. A motor 22 is installed at the top of the separator housing 1. The output shaft of the motor 22 is connected with a driving gear 23. A driving window 24 communicating with the driving cavity 17 is opened at 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, enabling the solid waste inside the centrifugal cylinder 6 to complete the oil removal process under the action of centrifugal force, and the oil on the solid waste can be removed quickly and effectively.

[0033] Further, 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 at the end of the centrifugal cylinder 6 away from the filter cylinder 5. A blocking disk 31 is fixed at the end of the blocking rod 30 close to the centrifugal cylinder 6. The blocking disk 31 contacts the annular step 29 to seal the bottom opening of the centrifugal cylinder 6. An air cylinder 32 is installed on the outer wall of the solid waste box 9. The telescopic shaft of the air cylinder 32 penetrates into the solid waste box 9 and is connected with the blocking rod 30. During centrifugal oil removal, the air cylinder 32 drives the blocking rod 30 to move closer to the centrifugal cylinder 6, so that the blocking disk 31 enters the centrifugal cylinder 6 and abuts against the annular step 29, thereby sealing the bottom opening of the centrifugal cylinder 6 and preventing the solid waste from falling into the solid waste box 9 without undergoing centrifugal oil removal. Both the blocking disk 31 and the annular step 29 are polished, making the friction force at their contact surface very small and not affecting the high-speed rotation of the centrifugal cylinder 6. Set the centrifugal time of the centrifugal cylinder 6. After reaching the centrifugal time, the centrifugal cylinder 6 stops rotating. At this time, the air cylinder 32 drives the blocking disk 31 to disengage from the centrifugal cylinder 6, so that the solid waste inside the centrifugal cylinder 6 falls into the solid waste box 9. Set the blanking time. After reaching the specified time, the air cylinder 32 drives the blocking disk 31 to seal the bottom opening of the centrifugal cylinder 6 again, and the centrifugal cylinder 6 performs centrifugal oil removal again. This process is repeated to realize the cycle of oil removal and blanking.

[0034] Embodiment 3

[0035] 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.

[0036] Embodiment 4

[0037] Based on the third embodiment, Figures 1 to 4As shown in the figure, a fine filtration mechanism is arranged below the primary filtration mechanism in the solid-liquid separation chamber 2. The fine filtration mechanism includes an upper filter frame 10 and a lower filter frame 11. A plurality of transverse wires 12 are fixedly arranged at equal intervals at the bottom of the upper filter frame 10, and a plurality of longitudinal wires 13 are fixedly arranged at equal intervals at the top of the lower filter frame 11. The transverse wires 12 and the longitudinal wires 13 are in contact to form a sieve mesh. Cleaning chambers 14 are formed at both ends of the fine filtration mechanism on the inner wall of the separator housing 1. An upper window 15 for the upper filter frame 10 to enter one of the cleaning chambers 14 is opened on the inner wall of the separator housing 1, and a lower window 16 for the lower filter frame 11 to enter the other cleaning chamber 14 is also opened on the inner wall of the separator housing 1. A large amount of tiny impurities still exist in the wastewater treated by the primary filtration mechanism. The tiny impurities are prone to aggregate together under the action of the oil liquid, thus forming large clusters of impurities, which are likely to cause blockage of the corrugated plate coalescer 50 and the fiber aggregator 54, affecting their service life and increasing the later maintenance cost. Therefore, a fine filtration mechanism is also arranged in the solid-liquid separation chamber 2. The wastewater passing through the primary filtration mechanism is finely filtered by the fine filtration mechanism to remove the tiny impurities in the wastewater. The sieve mesh composed of the transverse wires 12 and the longitudinal wires 13 blocks the tiny impurities, achieving the effect of removing the tiny impurities in the wastewater. Since the aperture of the sieve mesh is very small, the sieve mesh is prone to blockage, affecting the filtration effect. During the later use, the fine filtration mechanism needs to be frequently maintained, which is very inconvenient. Therefore, the fine filtration mechanism is set as a split structure. The upper filter frame 10 and the lower filter frame 11 are combined in a contact manner to form a sieve mesh. This design enables the fine filtration mechanism to be dredged online without manual maintenance. The specific online dredging process is as follows: the upper filter frame 10 can move into the connected cleaning chamber 14 through the upper window 15, and the lower filter frame 11 moves into the other connected cleaning chamber 14 through the lower window 16, so that the upper filter frame 10 and the lower filter frame 11 are arranged in a staggered manner along the horizontal direction, separating the upper filter frame 10 and the lower filter frame 11. The upper filter frame 10 and the lower filter frame 11 are flushed or vibrated and dredged in the cleaning chamber 14, so that the impurities attached to the transverse wires 12 and the longitudinal wires 13 can fall into the cleaning chamber 14, thus quickly completing the cleaning of the fine filtration mechanism. After the cleaning is completed, the upper filter frame 10 and the lower filter frame 11 move back to their original positions, and the transverse wires 12 and the longitudinal wires 13 come into contact again to form a sieve mesh. It should be noted that to ensure the sealing performance, sealing rings are arranged on the inner walls of the upper window 15 and the lower window 16. The inner rings of the two sealing rings are in a compressed state and are in contact with the upper filter frame 10 and the lower filter frame 11 respectively, so that good sealing performance is achieved between the upper window 15 and the upper filter frame 10, and between the lower window 16 and the lower filter frame 11.

[0038] Further, as 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.

[0039] Embodiment 5

[0040] Based on the fourth embodiment, Figures 1 to 7As shown, a flushing pipe network 40 is provided in the cleaning chamber 14. Flushing holes 41 are formed 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 provided 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. The upper filter frame 10 and the lower filter frame 11 are cleaned by means of water flushing. The flushing pipe network 40 is formed by connecting a plurality of longitudinal pipes and transverse pipes in a grid shape. Flushing holes 41 are formed at the bottoms of both the longitudinal pipes and the transverse pipes, so that the flushing pipe network 40 can cover the transverse wires 12 and the longitudinal wires 13 for cleaning.

[0041] Embodiment Six

[0042] To improve the cleaning effect on the transverse wires 12 and the longitudinal wires 13, on the basis of Embodiment Five, as Figures 1 to 6As shown, a first backwash gear 44 is sleeved on an upper guide shaft 38, and a second backwash gear 45 is sleeved on a lower guide shaft 39. Backwash motors 46 are installed at the tops of the shells of the two cleaning chambers 14. The output shafts of the backwash motors 46 are connected with third backwash gears 47. One of the third backwash gears 47 meshes with the first backwash gear 44, and the other third backwash gear 47 meshes with the second backwash gear 45. Guide holes 48 are formed in 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 fits into the corresponding guide hole 48, the upper filter frame 10 moves out of the upper window 15 and into the corresponding cleaning chamber 14. When the lower guide shaft 39 fits into the corresponding guide hole 48, the lower filter frame 11 moves out of the lower window 16 and into the corresponding cleaning chamber 14. The transverse wires 12 and the longitudinal wires 13 are cleaned by means of backwashing, which has a better flushing and cleaning effect. Taking the backwashing of the upper filter frame 10 as an example, during the process of the upper filter frame 10 moving into the cleaning chamber 14, the movement of the upper filter frame 10 is guided by the cooperation between the upper window 15 and the upper filter frame 10, so that the upper guide shaft 38 of the upper filter frame 10 is inserted into the corresponding guide hole 48. When the upper filter frame 10 completely enters the cleaning chamber 14, the upper guide shaft 38 is completely fitted in the guide hole 48. At this time, the upper filter frame 10 is separated from the upper window 15, and the first backwash gear 44 meshes with the third backwash gear 47. The position of the upper filter frame 10 is further positioned by the cooperation between 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 degree of rotational freedom. The flushing pipe network 40 first flushes the front surface of the upper filter frame 10, and then the backwash motor 46 drives the upper filter frame 10 to rotate 180° through the meshing of the first backwash gear 44 and the third backwash gear 47, and then the upper filter frame 10 is backwashed, further improving 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 being coaxial with the rotation axis of the upper filter frame 10 can ensure that the upper filter frame 10 can deflect 180° smoothly. When the cleaning is completed, the backwash motor 46 rotates in the reverse direction to make the upper filter frame 10 deflect 180° to reset. The reverse reset method is adopted to prevent the upper pull wire 36 from being broken. Then the upper filter frame 10 resets and moves into the solid-liquid separation chamber 2. The upper filter frame 10 first enters the upper window 15, and then the upper guide shaft 38 is separated from the guide hole 48, so that the movement of the upper filter frame 10 can be guided all the time, enabling the upper filter frame 10 to accurately move into the solid-liquid separation chamber 2 through the upper window 15. At the same time, during the 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 elaborated here;It should be noted that, to avoid interference between the first backwashing gear 44 and the upper wire 36 and the lower wire 37, and between the second backwashing gear 45 and the upper wire 36 and the lower wire 37, a plurality of fixed pulleys are arranged in the cleaning chamber 14 so that the upper wire 36 and the lower wire 37 are wired around the fixed pulleys. By utilizing the characteristic that the fixed pulley can change the direction of force, the upper wire 36 and the lower wire 37 can avoid the first backwashing gear 44, the second backwashing gear 45 and the third backwashing gear 47, enabling the cleaning operation of the fine filtration mechanism to 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 first oil collecting chamber (51) 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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