Oily sludge pretreatment equipment

Abstract

The present invention relates to the technical field of sludge treatment, and specifically to an oil-containing sludge pretreatment device, comprising a side support plate, a side support seat, an oil-containing layer plate and a bag layer plate, two connecting support plates are fixed between the side support plate and the side support seat, a feeding pipe and a plurality of output pipes are inserted on one side of the side support seat, both sides of the oil-containing layer plate and the bag layer plate are connected with movable supports by screws, the movable supports are connected to the connecting support plates by sliding, a transmission motor is fixed to an outer wall of one side of the side support plate, and a movable column is fixed to the output shaft of the transmission motor by a coupling. The present invention can pre-extrude the oil-containing sludge through each oil-containing layer plate and the bag layer plate, simply separate the oil and water in the oil-containing sludge, and enhance the oil-water removal effect in the pretreatment by means of internal bag pressurization, and then further layer the oil-water mixture through the oil-water separation strip cavity at the bottom.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to oily sludge pretreatment equipment. Background Art

[0002] Oily sludge refers to sludge mixed with heavy oils such as crude oil, various refined oils, and residual oil. Oily sludge does not exist inherently in nature, but is caused by various accidents, improper operation, obsolete, damaged, and corroded equipment in various industries, civil, and individuals related to crude oil and refined oil, such as oil field exploitation, oil refining process, transportation, use, and storage, which cause crude oil and refined oil to run, bubble, drip, and leak, leak to the ground, deposit on the ocean, lake, and river bottom, and mix with soil, water, etc. to form oil, soil, water, and even a mixture of other pollutants. In the prior art, pretreatment is generally carried out by dosing, but for oily sludge with a low water content, it is difficult to contact with the agent, and the conventional extrusion, re-dispersion, and final re-deposition method cannot be combined. In addition, when treating oily sludge, it is impossible to effectively separate oil and water at the same time when filtering, and the fluidity of the oil-water mixture with a low water content is also poor. The traditional method of adding drugs does not have a good contact effect, and it is difficult to exert the effect of the drug. It is also impossible to effectively discharge the oil and water by layer by simply standing. For this reason, the present application proposes an oily sludge pretreatment device to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide an oily sludge pretreatment device to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is: an oily sludge pretreatment equipment, including a side support plate, a side support seat, an oil layer plate and a bag layer plate, two connecting support plates are fixed between the side support plate and the side support seat, a feeding pipe and a plurality of output pipes are plugged into one side of the side support seat, both sides of the oil layer plate and the bag layer plate are connected with movable supports by screws, the movable supports are connected to the connecting support plates by sliding, a transmission motor is fixed to an outer wall of one side of the side support plate, and a movable column is fixed to the output shaft of the transmission motor through a coupling, the oil layer plates and the bag layer plates are distributed alternately, and each oil layer plate and the adjacent bag layer plate form an oily sludge pretreatment when they are in close contact. In the treatment area, sludge holes are provided in the central parts of the oily layer plate and the bag layer plate, the feed pipe is aligned with the sludge hole, the bag layer plate comprises a pressure-charging strip chamber, a bag and a connecting strip chamber, the corresponding two movable supports are fixed on both sides of the bag, the pressure-charging strip chamber and the connecting strip chamber are respectively fixed on the outer walls of the upper and lower sides of the bag and are connected, the oily layer plate comprises an inflation strip chamber, a double filter plate structure and an oil-water separation strip chamber, the movable supports are fixed on both sides of the double filter plate structure, the inflation strip chamber and the oil-water separation strip chamber are respectively fixed on the upper and lower sides of the double filter plate structure and are connected, a conversion groove is provided in the oil-water separation strip chamber, and a bubble generator is slidably provided in the conversion groove.

[0005] Preferably, the bubble generator is provided with a plurality of air guide grooves, and a bubbler is inserted at the top of the air guide groove. The bubbler includes a center column, a sliding column and a guide rotor. The sliding column is slidably connected to the top of the air guide groove, and the top of the sliding column passes through the air guide groove and extends to the outside. The guide rotor is rotatably connected to the top of the sliding column, and the center column is welded to the top inner wall of the sliding column.

[0006] Preferably, a plurality of guide holes are provided between every two of the air guide grooves, a blocking block is slidably connected in the guide hole, and a spring is provided between the blocking block and the bottom inner wall of the conversion groove, a plurality of accommodating grooves are provided on the top outer wall of the bubble generator, and each accommodating groove is provided directly above the air guide groove, the guide rotating head is placed in the corresponding accommodating groove, and a second connecting hole is provided inside each of the air guide grooves.

[0007] Preferably, the oil-water separation strip cavity is provided with a plurality of groups of oil-water discharge holes, an air inlet hole and a plurality of first connecting holes connected to the first connecting holes, each group of the oil-water discharge holes includes a sludge oil hole and a sludge water hole, the connecting strip cavity is provided with a plurality of groups of connecting oil-water holes, each group of the connecting oil-water holes includes a connecting oil hole and a connecting water hole, the plurality of groups of oil-water discharge holes and the connecting oil-water holes are linearly arranged and correspond one to one, when the oil layer plate and the container layer plate are in contact, each sludge oil hole is connected to the corresponding connecting oil hole to form an oil discharge pipe and finally to the corresponding output pipe, and each sludge water hole is connected to the corresponding connecting water hole to form a drainage pipe and also to the corresponding output pipe.

[0008] Preferably, one side of the pressure charging strip chamber is fixedly connected to a bag filling pressure tube, one side of the air-inflating strip chamber is fixedly connected to an air intake extrusion tube, a rotating motor is provided at the bottom of the oil-water separation strip chamber, the output shaft of the rotating motor is fixed with a screw through a coupling, the screw is threadedly inserted in the bubble generator, and the inner side wall of the double filter plate structure is fixed with two horizontally placed resistance measuring contact pieces, the resistance measuring contact pieces are connected with wires and extend to the outside.

[0009] Preferably, a return spring is provided between two adjacent movable supports located on the same side, a connecting bracket is connected between the side support seat and the side support plate by screws, and a fixing rod is connected between the side support seat and the side support plate by screws.

[0010] Preferably, a pressure-bearing layer is fixed to one side wall of the side support seat close to the side support plate, and a supply pressure layer is fixed to one side of the movable column. Both the supply pressure layer and the pressure-bearing layer are single filter plate structures, and the filter plates of the supply pressure layer and the pressure-bearing layer are arranged on the side close to the adjacent bag-containing layer. The tops of the supply pressure layer and the pressure-bearing layer are provided with inflation strip cavities, and the bottoms of the supply pressure layer and the pressure-bearing layer are provided with oil-water separation strip cavities.

[0011] Preferably, a floating plate is integrally formed at the bottom of the sliding column, and a spring is provided between the top outer wall of the floating plate and the inner wall of the air guide groove, a plurality of air outlet holes are evenly provided on the outer peripheral wall of the sliding column, a plurality of bubble guide grooves are provided at the bottom of the guide rotating head, and a guide is integrally formed at the bottom of the center column.

[0012] The present invention provides an oily sludge pretreatment device through improvement, which has the following improvements and advantages compared with the prior art:

[0013] First, the present invention can pre-extrude the oily sludge through each oil layer plate and the container layer plate, and simply separate the oil and water in the oily sludge, and enhance the oil and water removal effect in the pre-treatment by means of internal container pressurization, and then further stratify the oil-water mixture through the oil-water separation strip cavity at the bottom;

[0014] Second: effectively achieve the initial removal effect of heavy metal oil pollution in oily sludge, effectively reduce the initial heavy metal content of sewage, and reduce the dosage or intensity of the drug in the subsequent treatment of dosing or filtration and distillation, thereby reducing the cost of the subsequent treatment process;

[0015] Thirdly, the present invention separates sewage and dirty oil by combining the method of bubble oil floating with simple control of oil-water layer, and effectively realizes the separate discharge of sewage and dirty oil;

[0016] Fourthly, the present invention makes bubbles fully contact with the oil particles in the oil-water mixture by repeatedly vibrating and rotating the bubbler at the bottom, and can select appropriate gas components to perform bubble oil floating operation, thereby ensuring the thoroughness of oil-water separation;

[0017] Fifthly, when the present invention performs stratified treatment according to different oil pollution contents, since the oil content of each area of ​​the oily sludge is also different, and the oil-water mixture with a low water content has poor fluidity, the bubble oil is used to remove the sewage and the dirty oil, and the separation is more thorough, avoiding the problem of poor effect of traditional dosing and oil-water contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure when the oil layer plate and the bag layer plate are in contact with each other in the present invention;

[0021] Figure 3 It is a three-dimensional cross-sectional view of the oil layer plate and the bag layer plate in the present invention;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the oil layer plate and the bag containing layer plate of the present invention;

[0023] Figure 5 yes Figure 3 A partial enlarged view of part A;

[0024] Figure 6 is a three-dimensional cross-sectional view of the double filter plate structure of the present invention;

[0025] Figure 7 yes Figure 6 A partial enlarged view of part B;

[0026] Figure 8 It is a three-dimensional cross-sectional view of the oil-water separation strip cavity of the present invention;

[0027] Fig. 9 yes Figure 8 A partial enlarged view of part C in the middle;

[0028] Fig.10 is a three-dimensional cross-sectional view of the bubbler of the present invention;

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure of the bubbler in the present invention;

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the movable support device in the present invention;

[0031] Fig.13 It is a schematic plan view of the high pressure area in the bladder when it expands in the present invention;

[0032] Fig.14 is a system diagram of a resistance measurement contact piece connected to a controller in the present invention;

[0033] Fig.15 It is a control flow chart of the resistance measurement contact piece connection controller in the present invention.

[0034] Description of reference numerals:

[0035] 1. Side support plate; 2. Side support seat; 3. Connecting support plate; 4. Oil layer plate; 5. Bag layer plate; 6. Movable support device; 7. Oily sludge pretreatment area; 8. High pressure area in bag; 9. Oil-water mixing area; 10. Fixed rod; 11. Transmission motor; 12. Output pipe; 14. Air inlet and liquid extrusion pipe; 15. Bag filling and pressure pipe; 22. Feeding pipe; 23. Connecting bracket; 30. Sludge hole; 41. Inflatable strip chamber; 42. Oil-water separation strip chamber; 43. Double filter plate structure; 44. Bubble generator; 45. Barrier block; 46. Bubbler; 47. Rotating motor; 48. Pressure supply layer plate; 49. Pressure layer plate; 51 , charging strip chamber; 52, connecting strip chamber; 53, containing bag; 61, reset spring; 111, movable column; 421, sludge oil hole; 422, sludge water hole; 423, conversion groove; 424, air inlet; 425, first connecting hole; 431, resistance measurement contact piece; 441, containing groove; 442, guide hole; 443, air guide groove; 444, second connecting hole; 461, center column; 462, sliding column; 463, guide rotor; 521, connecting oil hole; 522, connecting water hole; 4620, air outlet; 4621, floating plate; 4611, guide; 4630, bubble guide groove. DETAILED DESCRIPTION

[0036] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention provides an oily sludge pretreatment device through improvement. The technical solution of the present invention is: Figure 1-Figure 15 As shown, an oily sludge pretreatment device comprises a side support plate 1, a side support seat 2, an oily layer plate 4 and a bag containing layer plate 5, two connecting support plates 3 are fixed between the side support plate 1 and the side support seat 2, a feeding pipe 22 and a plurality of output pipes 12 are inserted on one side of the side support seat 2, both sides of the oily layer plate 4 and the bag containing layer plate 5 are connected with movable supports 6 by screws, and the movable supports 6 are connected to the connecting support plate 3 by sliding, a transmission motor 11 is fixed to the outer wall of one side of the side support plate 1, and a movable column 111 is fixed to the output shaft of the transmission motor 11 through a coupling, the oily layer plates 4 and the bag containing layer plates 5 are distributed alternately, and an oily sludge pretreatment area 7 is formed between each oily layer plate 4 and the adjacent bag containing layer plate 5 when they are in close contact, and the oily layer plates 4 and the bag containing layer plates 5 are connected to the connecting support plate 3 by screws. A sludge hole 30 is provided in the central portion of the capsule layer plate 5, and the feed pipe 22 is aligned with the sludge hole 30. The capsule layer plate 5 includes a pressure-filling strip chamber 51, a capsule 53 and a connecting strip chamber 52. Two corresponding movable supports 6 are fixed on both sides of the capsule 53. The pressure-filling strip chamber 51 and the connecting strip chamber 52 are respectively fixed on the outer walls of the upper and lower sides of the capsule 53 and are connected. The oil layer plate 4 includes an inflation strip chamber 41, a double filter plate structure 43 and an oil-water separation strip chamber 42. The movable support 6 is fixed on both sides of the double filter plate structure 43. The inflation strip chamber 41 and the oil-water separation strip chamber 42 are respectively fixed on the upper and lower sides of the double filter plate structure 43 and are connected. A conversion groove 423 is provided in the oil-water separation strip chamber 42, and a bubble generator 44 is slidably provided in the conversion groove 423.

[0038] Furthermore, the bubble generator 44 is provided with a plurality of air guide grooves 443, and a bubbler 46 is inserted at the top of the air guide groove 443. The bubbler 46 includes a central column 461, a sliding column 462 and a guide rotary head 463. The sliding column 462 is slidably connected to the top of the air guide groove 443, and the top of the sliding column 462 extends through the air guide groove 443 to the outside, and the guide rotary head 463 is rotatably connected to the top of the sliding column 462. The central column 461 is welded to the top inner wall of the sliding column 462, and a floating plate 4621 is integrally formed at the bottom of the sliding column 462, and a spring is provided between the top outer wall of the floating plate 4621 and the inner wall of the air guide groove 443. The outer peripheral wall of the sliding column 462 is evenly provided with a plurality of air outlet holes 4620, and the bottom of the guide rotary head 463 is provided with a plurality of bubble guide grooves 4630. The bottom of the central column 461 is integrally formed with a guide 4611, wherein the bottom of the guide 4611 is as follows Fig.11 As shown, when the gas enters the gas guide groove 443, it is guided by the streamlined conical surface of the guide 4611, so that it is fully in contact with the floating plate 4621, and can have a certain thrust on the floating plate 4621; secondly, the bottom of the guide rotor 463 is a conical groove, and the bubble guide groove 4630 is opened on the conical groove and has an inclination angle with the cone generatrix, so that the gas is discharged from the air outlet 4620 into the guide rotor 463 and guided by the bubble guide groove 4630. The reaction force of the guide simply drives the guide rotor 463 to rotate, so that the bubbles are discharged and drive the small particles of oil suspended in the oil-water mixing area 9 to float up.

[0039] Further, the oil-water separation strip chamber 42 is provided with a plurality of groups of oil-water discharge holes, an air inlet hole 424 and a plurality of first connecting holes 425 connected to the first connecting hole 425, each group of oil-water discharge holes includes a sludge oil hole 421 and a sludge water hole 422, and the connecting strip chamber 52 is provided with a plurality of groups of connecting oil-water holes, each group of connecting oil-water holes includes a connecting oil hole 521 and a connecting water hole 522, and the plurality of groups of oil-water discharge holes and connecting oil-water holes are linearly arranged and correspond one to one, and when the oil layer plate 4 and the container layer plate 5 are in contact, each sludge oil hole 421 is connected to the corresponding connecting oil hole 521 to form an oil discharge pipeline and finally to the corresponding output pipe 12, and each sludge water hole 422 is connected to the corresponding connecting water hole 522 to form an oil discharge pipeline. The drainage pipe is also connected to the corresponding output pipe 12. One side of the pressure charging strip chamber 51 is fixedly connected to the filling bag pressure tube 15. One side of the air charging strip chamber 41 is fixedly connected to the air intake squeeze tube 14. A rotating motor 47 is provided at the bottom of the oil-water separation strip chamber 42. The output shaft of the rotating motor 47 is fixed with a screw through a coupling. The screw is inserted into the bubble generator 44 through a thread. Two horizontally placed resistance measuring contact pieces 431 are fixed to the inner wall of the double filter plate structure 43. The resistance measuring contact piece 431 is connected to a wire and extends to the outside. The resistance measuring contact piece 431 is used to detect changes in the resistance value of grease. The wire of each resistance measuring contact piece 431 is connected to an external controller to control whether the rotating motor 47 is started and whether the air intake squeeze tube 14 is intake.

[0040] Reference Fig.14 and Fig.15 As shown, the controller connected to the resistance measuring contact piece 431 achieves the following effect: when the bubbles continue to float on the oil and wait for static stratification, the controller starts the machine connected to the air intake squeeze pipe 14 to continuously inflate and squeeze the mixed liquid in the oil-water mixed area 9, and discharges the sewage at the bottom from the diversion hole 442. When the resistance measuring contact piece 431 contacts the oil layer, the resistance increases. The controller receives a signal with the increased resistance to stop the corresponding machine connected to the air intake squeeze pipe 14 from inflating, and the liquid in a single oil-water mixed area 9 no longer flows. When the resistance measuring contact pieces 431 in all the oil-water separation strip cavities 42 contact the oil-water layer and the resistance increases, the threshold is reached, and the controller receives a signal to start the rotating motor 47, so that all the bubble generators 44 move downward, block all the sludge water holes 422, and open the sludge oil hole 421, so that it and the connecting oil hole 521 are connected to the corresponding output pipe 12. At this time, the machine connected to the air intake squeeze pipe 14 is continued to be started to continuously inflate to achieve the effect of discharging the dirty oil.

[0041] What needs to be made clear about the air inlet 424 is that: when the oily layer plate 4 and the bag layer plate 5 in the device are in contact to form a closed space, the oily sludge is filled in and the bag layer plate 5 is filled with liquid or gas to expand it, and then it is left to stand. At this time, air or other oleophilic and hydrophobic gases are introduced into the air inlet 424, and enter the air guide groove 443 through the first connecting hole 425 and the second connecting hole 444, and finally bubbles emerge from the bottom of the oil-water mixing area 9. The tiny bubbles generated by this gas make the oil particles adhere to the bubbles and float to the water surface, thereby promoting the effect of static stratification. After the standing is over, the gas is stopped from being introduced into the air inlet 424, and the bubbler 46 also falls into the containing groove 441 to block the liquid from entering the air guide groove 443.

[0042] The above-mentioned method for separating oil and water in sludge is further explained as follows: initially, the sludge is squeezed to make the oil and water flow through the double filter plate structure 43 in the oil-water mixing zone 9, the bubble generator 44 is initially located at the upper part of the oil-water separation strip cavity 42, and the sludge oil hole 421 is blocked, at this time, the air inlet hole 424 continuously takes in air through the first connecting hole 425 and the second connecting hole 444 into the air guide groove 443, and bubbles are frequently generated through the bubbler 46 to bring out the oil particles to the top, and continue to stand still until the oil and water stratification is obvious, at this time, the air inlet squeeze pipe 14 is used to squeeze the oil and water in the oil-water mixing zone 9, so that the lower layer of sewage with less oil flows out through the guide hole 442, and in this process, the oil-water boundary layer gradually decreases, because the resistivity value of the oil layer is usually higher than In the adjacent water layer, the resistance measuring contact piece 431 contacts the oil-water layer and measures a surge in resistance. At this time, the air intake squeeze pipe 14 stops intake squeeze, and the air intake hole 424 also stops intake. The barrier block 45 is no longer under pressure and blocks the guide hole 442, waiting for the same method of bubble floating oil static operation in the oil-water mixed area 9 in other oily layer plates 4. When the resistance measuring contact pieces 431 on the inner walls of all the double filter plate structures 43 contact the oil-water boundary layer, the control rotation motor 47 is started to drive the bubble generator 44 to move downward until it contacts the bottom of the inner wall of the conversion tank 423 to block the sludge water hole 422. At the same time, the air intake squeeze pipe 14 is used to squeeze the remaining grease liquid from the sludge oil hole 421 and is discharged along the corresponding connected output pipe 12.

[0043] Furthermore, a return spring 61 is provided between two adjacent movable supports 6 located on the same side, a connecting bracket 23 is connected between the side support 2 and the side support plate 1 by screws, and a fixing rod 10 is connected between the side support 2 and the side support plate 1 by screws.

[0044] Furthermore, a pressure-bearing layer 49 is fixed to one side wall of the side support 2 close to the side support plate 1, and a pressure-supply layer 48 is fixed to one side of the movable column 111. Both the pressure-supply layer 48 and the pressure-bearing layer 49 are single filter plate structures, and the filter plates of the pressure-supply layer 48 and the pressure-bearing layer 49 are arranged on one side close to the adjacent bag-containing layer 5. The tops of the pressure-supply layer 48 and the pressure-bearing layer 49 are provided with an inflation strip cavity 41, and the bottoms of the pressure-supply layer 48 and the pressure-bearing layer 49 are provided with an oil-water separation strip cavity 42.

[0045] Among them, the sludge water hole 422 in the oil-water separation strip cavity 42 at the bottom of the pressure supply layer 48 is unidirectional, and is only connected with the connecting water hole 522 of the connecting strip cavity 52 at the bottom of the adjacent bag containing layer 5. Similarly, the sludge oil hole 421 in the oil-water separation strip cavity 42 at the bottom of the pressure supply layer 48 is also unidirectional and is only connected with the connecting oil hole 521 of the connecting strip cavity 52 at the bottom of the adjacent bag containing layer 5.

[0046] Working principle: When the device is in use, the outer pressure supply layer 48 connected to the side support 2 is first controlled by the transmission motor 11, and each oil layer 4 and the bag layer 5 are close to each other until they are in close contact, forming a closed sludge treatment chamber, and the feed pipe 22 fills the oily sludge into each sludge treatment chamber. Fig.13 As shown, after the oily sludge is filled, the charging strip cavity 51 is filled with liquid or gas to fill the high-pressure area 8 in the bag until it expands, and the oily sludge in the sludge treatment chamber is squeezed to press the oil-water mixture in the oily sludge into the oil-water mixing area 9 through the double filter plate structure 43, and then the dirty oil and sewage are treated and layered by standing and bubble floating oil methods, and finally the dirty oil and sewage are separated and discharged through the corresponding opening and closing oil and water holes, so as to realize the oil-water separation treatment of the oily sludge, and facilitate the subsequent recovery or discharge treatment of sewage and dirty oil. After the oil and water are discharged, the pressure of the outer pressure supply layer 48 is contacted, and each oil layer plate 4 and the bag layer plate 5 are gradually separated under the action of the reset spring 61 connected to the movable support 6, and the drained sludge falls off naturally from the sludge treatment chamber, so as to realize the simple pretreatment of the oily sludge, and facilitate the subsequent dosing or landfilling work.

[0047] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oily sludge pretreatment device, characterized in that: The invention comprises a side support plate (1), a side support seat (2), an oil layer plate (4) and a bag containing layer plate (5), wherein two connecting support plates (3) are fixed between the side support plate (1) and the side support seat (2), a feeding pipe (22) and a plurality of output pipes (12) are inserted on one side of the side support seat (2), both sides of the oil layer plate (4) and the bag containing layer plate (5) are connected with movable supports (6) by screws, and the movable supports (6) are connected to the connecting support plate (3) by sliding, a transmission motor (11) is fixed to the outer wall of one side of the side support plate (1), and the output shaft of the transmission motor (11) is fixed with a movable column (111) by a coupling, the oil layer plates (4) and the bag containing layer plates (5) are arranged alternately, and each oil layer plate (4) and the adjacent bag containing layer plate (5) form an oily sludge pretreatment area (7) when they are in close contact, and the central part of the oil layer plate (4) and the bag containing layer plate (5) The sludge holes (30) are formed at the positions of the sludge layer plate (5), the feeding pipe (22) is aligned with the sludge holes (30), the sludge layer plate (5) comprises a pressure-charging strip chamber (51), a sludge layer (53) and a connecting strip chamber (52), the two corresponding movable supports (6) are fixed on both sides of the sludge layer (53), the pressure-charging strip chamber (51) and the connecting strip chamber (52) are respectively fixed on the outer walls of the upper and lower sides of the sludge layer (53) and are connected, the oil layer plate (4) comprises an air-charging strip chamber (41), a double filter plate structure (43) and an oil-water separation strip chamber (42), the movable supports (6) are fixed on both sides of the double filter plate structure (43), the air-charging strip chamber (41) and the oil-water separation strip chamber (42) are respectively fixed on the upper and lower sides of the double filter plate structure (43) and are connected, a conversion groove (423) is formed in the oil-water separation strip chamber (42), and a bubble generator (44) is slidably provided in the conversion groove (423); The bubble generator (44) is provided with a plurality of air guide grooves (443), a bubbler (46) is inserted at the top of the air guide groove (443), and the bubbler (46) comprises a central column (461), a sliding column (462) and a guide rotating head (463), the sliding column (462) is slidably connected to the top of the air guide groove (443), and the top of the sliding column (462) passes through the air guide groove (443) and extends to the outside, the guide rotating head (463) is rotatably connected to the top of the sliding column (462), and the central column (461) is welded to the inner wall of the top of the sliding column (462); A floating plate (4621) is integrally formed at the bottom of the sliding column (462), and a spring is provided between the top outer wall of the floating plate (4621) and the inner wall of the air guide groove (443). A plurality of air outlet holes (4620) are evenly provided on the outer peripheral wall of the sliding column (462). A plurality of bubble guide grooves (4630) are provided at the bottom of the guide rotating head (463). A guide (4611) is integrally formed at the bottom of the central column (461). The bottom surface of the guide rotating head (463) is a conical groove. When the gas enters the bubble guide groove (4630) and turns through the bubble guide groove (4630), the gas drives the guide rotating head (463) to rotate under the action of a reaction force.

2. The oily sludge pretreatment equipment according to claim 1, characterized in that: A plurality of guide holes (442) are provided between every two of the air guide grooves (443); a blocking block (45) is slidably connected in the guide hole (442); and a spring is provided between the blocking block (45) and the bottom inner wall of the conversion groove (423); a plurality of receiving grooves (441) are provided on the top outer wall of the bubble generator (44); and each receiving groove (441) is provided directly above the air guide groove (443); the guide rotating head (463) is placed in the corresponding receiving groove (441); and a second connecting hole (444) is provided inside each of the air guide grooves (443).

3. The oily sludge pretreatment equipment according to claim 1, characterized in that: The oil-water separation strip chamber (42) is provided with a plurality of groups of oil-water discharge holes, an air inlet hole (424), and a plurality of first connecting holes (425) that are all connected to the first connecting holes (425), each group of the oil-water discharge holes includes a sludge oil hole (421) and a sludge water hole (422), the connecting strip chamber (52) is provided with a plurality of groups of connecting oil-water holes, each group of the connecting oil-water holes includes a connecting oil hole (521) and a connecting water hole (522), the plurality of groups of oil-water discharge holes and the connecting oil-water holes are linearly arranged and correspond to each other one by one, when the oil layer plate (4) and the container layer plate (5) are in contact, each sludge oil hole (421) is connected to the corresponding connecting oil hole (521) to form an oil discharge pipeline and finally to the corresponding output pipe (12), and each sludge water hole (422) is connected to the corresponding connecting water hole (522) to form a drainage pipeline and also to the corresponding output pipe (12).

4. The oily sludge pretreatment equipment according to claim 1, characterized in that: One side of the pressure-filling strip chamber (51) is fixedly connected to a filling and pressure tube (15), one side of the gas-filling strip chamber (41) is fixedly connected to an air inlet squeeze tube (14), a rotary motor (47) is provided at the bottom of the oil-water separation strip chamber (42), an output shaft of the rotary motor (47) is fixedly connected to a screw via a coupling, the screw is threadably plugged into the bubble generator (44), and two horizontally placed resistance measurement contact sheets (431) are fixedly connected to the inner side wall of the double filter plate structure (43), the resistance measurement contact sheets (431) being connected to a wire and extending to the outside.

5. The oily sludge pretreatment equipment according to claim 1, characterized in that: A return spring (61) is provided between two adjacent movable supports (6) located on the same side, a connecting bracket (23) is connected between the side support seat (2) and the side support plate (1) via screws, and a fixing rod (10) is connected between the side support seat (2) and the side support plate (1) via screws.

6. The oily sludge pretreatment equipment according to claim 1, characterized in that: A pressure-bearing layer (49) is fixed to a side wall of the side support seat (2) close to the side support plate (1), and a pressure-supply layer (48) is fixed to one side of the movable column (111). Both the pressure-supply layer (48) and the pressure-bearing layer (49) are single filter plate structures. The filter plates of the pressure-supply layer (48) and the pressure-bearing layer (49) are arranged on a side close to an adjacent bag-containing layer (5). The tops of the pressure-supply layer (48) and the pressure-bearing layer (49) are provided with an inflation strip cavity (41), and the bottoms of the pressure-supply layer (48) and the pressure-bearing layer (49) are provided with an oil-water separation strip cavity (42).

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