Oil sludge and sand dehydration device

Abstract

The invention relates to the technical field of oily sludge and sand treatment, in particular to an oily sludge and sand dewatering device which comprises a base, and a presser for dewatering oily sludge and sand is arranged on the upper end face of the base; the screening and mixing mechanism comprises four supporting columns fixedly connected to the four corners of the upper end face of the squeezer, the ends, away from the squeezer, of the four supporting columns are jointly and fixedly connected with a separation box, the inner middle of the separation box is fixedly connected with a screening barrel, and the upper end face of the separation box is provided with a material injection assembly for injecting oil sludge sand into the screening barrel; through a screening barrel in the screening and mixing mechanism, oil sludge and sand entering the screening and mixing mechanism can be screened, when the oil sludge and sand enter the screening and mixing mechanism, a rotating separation assembly and nitrogen are utilized, oxidation and bubble generation are reduced, stability and uniform distribution of agents are kept, and oxygen is beneficial for promoting the reaction rate of the agents; especially under the condition that oxidation is needed, the dehydration efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oily sludge sand processing, and in particular to an oily sludge sand dehydration device. Background Art

[0002] An oil sludge dehydration device is a device used to separate oil and water from oily sludge. It separates the water and oil in the oil sludge by mechanical, chemical or physical methods, making the oil sludge easier to handle and dispose of. This device usually includes a dehydrator, a centrifugal separator, a filter press, etc. Through optimized processing technology, it can effectively reduce the volume of waste and recover valuable oil. For example, a Chinese patent with publication number CN105174682B discloses an oil sludge dehydration device.

[0003] When dehydrating oil sludge sand, oil sludge sand dehydration devices usually add chemical agents (such as flocculants or coagulants) to help quickly and effectively separate solid particles, oil and water in the oil sludge. Existing oil sludge sand dehydration devices usually directly add chemical agents to the oil sludge sand, and the particle size of the oil sludge sand (the thickness of the oil sludge sand particles) is different. Since the volume of coarse-grained oil sludge is larger than that of fine-grained oil sludge, the contact area between the coarse-grained oil sludge and the chemical agent is larger than that of the fine-grained oil sludge, resulting in excessive flocculation due to excessive contact of the coarse-grained oil sludge sand with chemical agents, causing large particles to aggregate in large quantities, resulting in large particles that are too large in size, which in turn affects the subsequent separation of water and oil. The fine-grained oil sludge sand contacts too few chemicals, resulting in ineffective mutual flocculation, resulting in unstable sedimentation, which increases the complexity of subsequent separation of water and oil. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an oil sludge sand dehydration device, which can effectively solve the problem in the prior art that the volume of coarse-grained oil sludge is larger than that of fine-grained oil sludge, resulting in excessive flocculation due to the coarse-grained oil sludge sand contacting too many chemicals, while the fine-grained oil sludge sand contacting too few chemicals, resulting in ineffective mutual flocculation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an oil sludge sand dehydration device, comprising: A base, wherein an upper end surface of the base is provided with a press for dehydrating oil sludge and sand; A screening and mixing mechanism, the screening and mixing mechanism comprises four supporting columns fixedly connected to the four corners of the upper end face of the press, the four supporting columns are commonly fixedly connected to a partition box at one end away from the press, a screening barrel is fixedly connected to the inner middle part of the partition box, an injection assembly for injecting oil mud sand into the screening barrel is arranged on the upper end face of the partition box, a separation assembly for stirring the oil mud sand is arranged in the inner middle part of the screening barrel, a plurality of gas injection assemblies for injecting nitrogen or oxygen into the oil mud sand are arranged in a circular array on the inner edge of the separation assembly, and two fine material mixing assemblies are symmetrically arranged on the inner wall of the partition box with the screening barrel as the center; The capturing and mixing mechanism comprises a coarse material mixing assembly arranged on the opposite side of the screening and mixing mechanism and the press, and the coarse material mixing assembly corresponds to the position of the screening barrel, two fine material liquid catching boxes are symmetrically fixedly connected on both sides of the opposite side of the screening and mixing mechanism and the press, and the fine material liquid catching boxes correspond to the position of the fine material mixing assembly, a fine material stirring assembly for stirring oil mud and sand is arranged at the center position inside the fine material liquid catching box, and a chemical agent storage box for storing chemical agents is fixedly connected to the side of the press.

[0006] Preferably, a pair of partition plates are symmetrically fixedly connected to the inner wall of the partition box, and each pair of the partition plates has two partition plates evenly fixedly connected to the inner wall of the partition box. The pair of partition plates divides the interior of the partition box into a gas injection separation zone and two fine material mixing zones, and the gas injection separation zone is located in the middle. A pair of heating rods are symmetrically arranged on the inner wall of the gas injection separation zone. A plurality of first holes are provided in an annular array at the inner bottom of the gas injection separation zone of the partition box, and each layer has a plurality of first holes, and the number of first holes in each layer gradually decreases from the outside to the inside. A plurality of second holes are fixedly connected in a linear array at the inner bottom of the fine material mixing zone of the partition box. The screening barrel is fixedly connected to the inner bottom of the gas injection separation zone of the partition box, and the side of the partition plate away from the inner wall of the partition box contacts the outer peripheral surface of the screening barrel. A plurality of coarse holes corresponding to and connected to the first holes are provided on the lower end surface of the screening barrel, and a plurality of fine holes are provided in a rectangular array on the outer peripheral surface of the screening barrel facing the direction of the two fine material mixing components.

[0007] Preferably, the injection assembly includes a barrel cover fixedly connected to the upper end surface of the screening barrel, a square material dividing frame is fixedly connected to the center position of the barrel cover, the top of the square material dividing frame passes through the upper end surface of the partition box, the bottom of the square material dividing frame passes through the barrel cover, a plurality of injection tubes are fixedly connected in a rectangular array on the side of the square material dividing frame facing the screening barrel, four material dividing tubes are fixedly connected on the side of the square material dividing frame away from the screening barrel, the four material dividing tubes are respectively connected to the four corners of the square material dividing frame, the four material dividing tubes are commonly fixedly connected to a material dividing ball at one end away from the square material dividing frame, and the upper end surface of the material dividing ball is fixedly connected to a feed pipe.

[0008] Preferably, the separation assembly comprises two hollow fixed disks rotatably connected to the opposite surfaces of the screening barrel and the barrel cover, a driver for driving one of the fixed disks to rotate is arranged on the outer side of the separation box, a plurality of conical blocks are fixedly connected to the opposite surfaces of the two fixed disks in a linear array, and the conical outer peripheral surface of each conical block is alternately provided with grooves and protrusions in an annular array; The outer side of the separation box is fixedly connected to a gas injection box, which consists of an airtight box and an electric air release valve. Compressed nitrogen or oxygen is stored in the airtight box. The output end of the upper end surface of the gas injection box is fixedly connected to a gas injection pipe. The end of the gas injection pipe away from the gas injection box passes through the barrel cover and is connected to the fixed disk in an airtight rotation.

[0009] Preferably, the gas injection assembly includes an air supply pipe which is airtightly rotatably connected to the opposite surfaces of two fixed disks, the outer circumferential surface of the air supply pipe is alternately fixedly connected to the gas injection disk and the stirring disk, the outer circumferential surface of the gas injection disk is fixedly connected to a plurality of exhaust pipes in a circular array, a recess is opened at the center position of the stirring disk, and a plurality of groups of inclined plates are fixedly connected to the circular array inside the recess of the stirring disk, each group of the inclined plates has a plurality of inclined plates, and the inclination directions of the plurality of inclined plates in each group are alternately opposite.

[0010] Preferably, the fine material mixing assembly includes two positioning plates rotatably connected to the inner walls on both sides of the fine material mixing zone of the partition box, the opposite surfaces of the two positioning plates are fixedly connected to a square tube, and the square tube has four faces, the center position of the square tube is fixedly connected to a dispersion cone, the dispersion cone is composed of a plurality of symmetrical and gradually decreasing circular disks, the square tube is symmetrically fixedly connected to a pair of stirring plates and fixedly connected to a pair of injection blocks with the dispersion cone as the center, and the injection blocks are arranged close to the dispersion cone, the stirring plates and the injection blocks are alternately distributed on the surrounding surfaces of 372, and the side of each injection block facing the stirring plate is fixedly connected to a plurality of nozzles in a rectangular array, and the side of each stirring plate is provided with a plurality of holes in a rectangular array, and a stirring fan component is rotated in each hole.

[0011] Preferably, the coarse material mixing assembly includes a mixing drum fixedly connected to the opposite side of the screening and mixing mechanism and the press, a leakage disk is fixedly connected to the inner middle part of the mixing drum, a hollow liquid injection ring is fixedly connected to the interior of the mixing drum and above the leakage disk, an annular groove is provided at the center position of the side of the liquid injection ring away from the mixing drum, a plurality of drainage holes connected to the liquid injection ring are provided in the inner annular array of the annular groove, a generator is arranged at the center position of the leakage disk, the generator is mainly composed of a rotor, a stator, a bearing, a battery and a casing, a rotating column is fixedly connected to the inner ring of the bearing of the generator, the generator is electrically connected to the electric air release valve of the air injection box, and a plurality of fan blades with inconsistent directions are alternately fixedly connected to the outer peripheral surface of the rotating column in a linear array.

[0012] Preferably, the fine material stirring assembly comprises a rotating rod rotatably connected to the inside of the fine material liquid collecting box, a plurality of drain discs are fixedly connected to the rod body in a linear array, and a plurality of hollow cones are fixedly connected to the outer peripheral surface of each drain disc in an annular array.

[0013] Preferably, the upper end surface of the medicine storage box is fixedly connected with a three-way transmission tube, the three-way transmission tube has an output end and two input ends, the output end of the three-way transmission tube is connected with the medicine storage box through a pipeline, the input end of one of the three-way transmission tubes is fixedly connected with a medicine input tube, the end of the medicine input tube away from the three-way transmission tube passes through the mixing cylinder and is connected with the injection ring, the other input end of the three-way transmission tube is fixedly connected with a diverter valve, the diverter valve has an input end and two output ends, and the other input end of the three-way transmission tube is connected with the input end of the diverter valve through a pipeline, both output ends of the diverter valve are fixedly connected with diverter tubes, the end of the diverter tube away from the diverter valve passes through the partition box and is air-tightly rotatably connected with the positioning plate on the same side.

[0014] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The oil sludge sand dehydration device can screen the oil sludge sand entering the screening and mixing mechanism through the screening barrel in the screening and mixing mechanism, and use the rotating separation component to separate the coarse and fine oil sludge sand in the oil sludge sand when entering the screening and mixing mechanism. While the separation component separates the coarse and fine sludge sand in the oil sludge sand, the gas injection component synchronously starts to inject nitrogen or oxygen into the oil sludge sand in the coarse and fine separation state, which can optimize the effect of the subsequent injection of chemical agents during the oil sludge sand dehydration process. The injection of nitrogen can reduce oxidation and bubble generation, maintain the stability and uniform distribution of the agent, and the injection of oxygen can help promote the reaction rate of the agent, especially when oxidation is required, thereby improving the dehydration efficiency.

[0015] 2. The oil sludge dehydration device can achieve the mixing of the fine oil sludge screened by the screening barrel with the chemical agent through the fine material mixing component, thereby prolonging the flocculation time of the chemical agent and the fine oil sludge. The fine oil sludge fully reacts with the chemical agent during a longer contact time, which helps to form a more stable flocculent body. At the same time, the long-term contact can make the agent more evenly distributed on the fine particles, avoiding excessive flocculation of the coarse oil sludge due to excessive chemical agents, and ensuring that the fine oil sludge gets enough chemical action, thereby balancing the overall treatment effect.

[0016] 3. The oil sludge dehydration device can achieve mixing of coarse oil sludge and chemicals by capturing the coarse material mixing component in the mixing mechanism, wherein the liquid injection ring and the leakage plate in the coarse material mixing component can be used to achieve rapid contact between the chemical agent and the coarse oil sludge. At the same time, the inertia of the coarse oil sludge entering the coarse material mixing component from the screening barrel is used to make the coarse oil sludge collide with the fan blades in the rotating column, thereby causing the rotating column to rotate. While the coarse oil sludge collides with the fan blades, the fan blades also stir the coarse oil sludge mixed with the chemical agent, thereby achieving full contact between the coarse oil sludge and the chemical agent. The rotation of the rotating column also drives the generator at the bottom thereof to work, thereby causing the generator to generate current, thereby realizing power supply to the electric air release valve in the air injection box. The liquid injection ring and the leakage plate design ensure rapid and uniform contact between the chemical agent and the coarse oil sludge, thereby improving the mixing efficiency. The rotation of the rotating column drives the generator to generate current, which supplies power to the electric air release valve in the air injection box, thereby realizing effective energy utilization and automatic control of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the overall side of the present invention; Figure 3 This is a schematic diagram of the structure inside the screening and mixing mechanism of the present invention; Figure 4 It is a structural schematic diagram of the injection assembly of the present invention; Figure 5 It is a schematic diagram of the structure inside the partition box of the present invention; Figure 6 It is a structural schematic diagram of the screening barrel of the present invention; Figure 7 It is a structural schematic diagram of the separation component of the present invention; Figure 8 It is a structural schematic diagram of the gas injection assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the fine material mixing assembly of the present invention; Fig.10 It is a structural schematic diagram of the coarse material mixing assembly of the present invention; Fig.11 It is a structural schematic diagram of the fine material liquid catching box of the present invention; Fig.12 It is a schematic structural diagram of the fine material stirring assembly of the present invention.

[0019] Reference numerals: 1, base; 2, press; 3, screening and mixing mechanism; 31, support column; 32. partition box; 321. partition plate; 322. heating rod; 323. first hole; 234. second hole; 33. screening barrel; 331. coarse hole; 332. fine hole; 34. injection assembly; 341. barrel cover; 342. material distribution frame; 343. injection pipe; 344. material distribution pipe; 345. material distribution ball; 346. feeding pipe; 35. separation assembly; 351. fixing plate; 352. conical block; 353. groove; 354. convex block; 36. gas injection assembly; 361. gas transmission pipe; 362. gas injection plate; 363. exhaust pipe; 364. stirring plate; 365. inclined plate; 37. fine material mixing assembly; 371. Positioning plate; 372. Square tube; 373. Stirring blade; 374. Stirring fan element; 375. Liquid injection block; 376. Dispersion cone; 38. Gas injection box; 381. Gas injection pipe; 4. Capture and mix mechanism; 41. Coarse material mixing assembly; 411. Mixing barrel; 412. Liquid injection ring; 413. Leakage plate; 414. Generator; 415. Rotating column; 416. Fan blade; 42. Fine material liquid capture box; 43. Fine material stirring assembly; 431. Rotating rod; 432. Leakage plate; 433. Hollow cone; 5. Drug storage box; 51. Three-way transmission pipe; 52. Drug input pipe; 53. Diverter valve; 54. Diverter pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Example: Refer to Figures 1 to 12 , an oil sludge sand dehydration device, comprising: A base 1, the upper end surface of which is provided with a press 2 for dehydrating oil sludge and sand; The screening and mixing mechanism 3 comprises four supporting columns 31 fixedly connected to the four corners of the upper end surface of the press 2, and a partition box 32 is fixedly connected to one end of the four supporting columns 31 away from the press 2, and a screening barrel 33 is fixedly connected to the inner middle of the partition box 32, and an injection assembly 34 for injecting oil sludge into the screening barrel 33 is arranged on the upper end surface of the partition box 32, and a separation assembly 35 for stirring the oil sludge is arranged in the inner middle of the screening barrel 33, and a plurality of gas injection assemblies 36 for injecting nitrogen or oxygen into the oil sludge are arranged in a circular array on the inner edge of the separation assembly 35, and two fine material mixing assemblies 37 are symmetrically arranged on the inner wall of the partition box 32 with the screening barrel 33 as the center; The capturing and mixing mechanism 4 includes a coarse material mixing assembly 41 arranged on the opposite side of the screening and mixing mechanism 3 and the press 2, and the coarse material mixing assembly 41 corresponds to the position of the screening barrel 33. Two fine material liquid catching boxes 42 are symmetrically fixedly connected on both sides of the opposite side of the screening and mixing mechanism 3 and the press 2, and the fine material liquid catching boxes 42 correspond to the position of the fine material mixing assembly 37. A fine material stirring assembly 43 for stirring oil mud and sand is arranged at the center of the fine material liquid catching box 42, and a chemical agent storage box 5 for storing chemical agents is fixedly connected to the side of the press 2.

[0023] By utilizing the screening barrel 33 in the screening and mixing mechanism 3 and the separation component 35 in the screening barrel 33, the oil sludge in the oil sludge dehydration device injected by the injection component 34 is screened for coarse and fine oil sludge, so that the fine oil sludge is discharged from the screening barrel 33 first and enters the fine material mixing component 37 to be mixed with the chemical agent, thereby prolonging the mixing time of the fine oil sludge and the chemical agent, while the coarse oil sludge is retained in the screening barrel 33 and later enters the coarse material mixing component 41 in the capture and mixing mechanism 4 to be mixed with the chemical agent, thereby forming a time difference for the mixing of the coarse and fine oil sludge and the chemical agent, thereby promoting the full mixing of the fine oil sludge and the chemical agent.

[0024] Reference Figures 3 to 5The inner wall of the partition box 32 is symmetrically fixedly connected with a pair of partition plates 321, each pair of partition plates 321 has two inner walls that are evenly fixedly connected to the partition box 32, and the pair of partition plates 321 divides the interior of the partition box 32 into a gas injection separation zone and two fine material mixing zones, and the gas injection separation zone is located in the middle, and the inner wall of the gas injection separation zone is symmetrically provided with a pair of heating rods 322, and the inner bottom annular array of the gas injection separation zone of the partition box 32 is provided with multiple layers of first holes 323, and each layer of the first holes 323 has multiple, and each layer of the first holes 323 The number of holes decreases gradually from the outside to the inside. A plurality of second holes 234 are fixedly connected in a linear array in the inner bottom of the fine material mixing zone of the partition box 32. The screening barrel 33 is fixedly connected to the inner bottom of the gas injection separation zone of the partition box 32. The side of the partition plate 321 away from the inner wall of the partition box 32 contacts the outer peripheral surface of the screening barrel 33. A plurality of coarse holes 331 corresponding to and connected to the first holes 323 are provided on the lower end surface of the screening barrel 33. A plurality of fine holes 332 are provided in a rectangular array on the outer peripheral surface of the screening barrel 33 facing the direction of the two fine material mixing components 37.

[0025] A pair of partition plates 321 in the partition box 32 are used in combination with the screening barrel 33 to form a gas injection separation zone and two fine material mixing zones in the partition box 32. The screening barrel 33 will discharge the screened fine oil mud and sand into the fine material mixing zone through multiple fine holes 332, while the coarse oil mud and sand will be retained inside the screening barrel 33, and the coarse oil mud and sand retained inside the screening barrel 33 will be discharged into the coarse material mixing component 41 through the coarse holes 331.

[0026] Reference Figure 1 , Figure 2 , Figure 4 The material injection assembly 34 includes a barrel cover 341 fixedly connected to the upper end surface of the screening barrel 33, a square material distribution frame 342 is fixedly connected to the center position of the barrel cover 341, the top of the square material distribution frame 342 passes through the upper end surface of the partition box 32, the bottom of the square material distribution frame 342 passes through the barrel cover 341, and a plurality of injection tubes 343 are fixedly connected in a rectangular array on the side of the square material distribution frame 342 facing the screening barrel 33, four material distribution tubes 344 are fixedly connected on the side of the square material distribution frame 342 away from the screening barrel 33, and the four material distribution tubes 344 are respectively connected to the four corners of the square material distribution frame 342, and a material distribution ball 345 is fixedly connected to one end of the four material distribution tubes 344 away from the square material distribution frame 342, and a feeding tube 346 is fixedly connected to the upper end surface of the material distribution ball 345.

[0027] By utilizing the four dividing pipes 344 and the square dividing frame 342 in the injection assembly 34, the oil sludge sand injected into the oil sludge sand dehydration device can be diverted and injected, so that the separation assembly 35 in the screening barrel 33 is in uniform contact with the oil sludge sand, thereby preventing the oil sludge sand from accumulating in a certain part of the screening barrel 33 when the oil sludge sand is separated into coarse and fine particles in the screening barrel 33, thereby affecting the separation of the oil sludge sand by the separation assembly 35.

[0028] Reference Figure 1 , Figure 6 to Figure 7 The separation assembly 35 includes two hollow fixed disks 351 rotatably connected to the opposite surfaces of the screening barrel 33 and the barrel cover 341. A driver for driving one of the fixed disks 351 to rotate is disposed on the outer side of the separation box 32. A plurality of conical blocks 352 are fixedly connected to the opposite surfaces of the two fixed disks 351 in a linear array. The conical outer peripheral surface of each conical block 352 is alternately provided with grooves 353 and protrusions 354 in an annular array. An injection box 38 is fixedly connected to the outside of the partition box 32. The injection box 38 consists of an airtight box and an electric air release valve. Compressed nitrogen or oxygen is stored in the airtight box. The output end of the upper end surface of the injection box 38 is fixedly connected to a gas injection pipe 381. The end of the gas injection pipe 381 away from the gas injection box 38 passes through the barrel cover 341 and is connected to the fixed disk 351 in an airtight rotation.

[0029] The multiple conical blocks 352 in the separation assembly 35 and the grooves 353 and protrusions 354 in the conical blocks 352 are used to achieve rapid rotation of the oil sludge and sand, so that the fine oil sludge and sand pass through the fine holes 332 of the screening barrel 33 and enter the fine material mixing area inside the separation box 32.

[0030] Reference Figure 8 The gas injection assembly 36 includes an air supply pipe 361 which is airtightly rotatably connected to the opposite surfaces of the two fixed disks 351. The outer peripheral surface of the air supply pipe 361 is alternately fixedly connected to the gas injection disk 362 and the stirring disk 364. The outer peripheral surface of the gas injection disk 362 is fixedly connected to multiple exhaust pipes 363 in a circular array. The center position of the stirring disk 364 is provided with a recess. The recess of the stirring disk 364 is fixedly connected to multiple groups of inclined plates 365 in a circular array. Each group of inclined plates 365 has multiple inclined plates, and the inclination directions of the multiple inclined plates 365 in each group are alternately opposite.

[0031] The gas injection plate 362 in the gas injection assembly 36 is used to inject nitrogen or oxygen into the oil mud sand in the screening state, and the stirring plate 364 is used to mix the nitrogen or oxygen injected into the oil mud sand by the gas injection plate 362, so that the nitrogen or oxygen is released to various positions of the oil mud sand.

[0032] Reference Figure 3 , Fig. 9The fine material mixing assembly 37 includes two positioning plates 371 rotatably connected to the inner walls on both sides of the fine material mixing area of ​​the partition box 32, the opposite surfaces of the two positioning plates 371 are fixedly connected with a square tube 372, and the square tube 372 has four faces, and the center position of the square tube 372 is fixedly connected with a dispersion cone 376, and the dispersion cone 376 is composed of a plurality of symmetrical and gradually decreasing circular disks, the square tube 372 is symmetrically fixedly connected with a pair of stirring blades 373 and a pair of injection blocks 375 fixedly connected with the dispersion cone 376 as the center, and the injection blocks 375 are arranged close to the dispersion cone 376, the stirring blades 373 and the injection blocks 375 are alternately distributed on the surrounding surfaces of 372, and a plurality of nozzles are fixedly connected to the side of each injection block 375 facing the stirring blade 373 in a rectangular array, and a plurality of holes are opened on the side of each stirring blade 373 in a rectangular array, and a stirring fan component 374 is rotated in each hole.

[0033] The dispersion cone 376 in the fine material mixing assembly 37 can be used to disperse the fine oil mud and sand discharged from the screening barrel 33, so that the injection blocks 375 and the stirring blades 373 located on both sides of the dispersion cone 376 are in contact with the fine oil mud and sand, thereby injecting chemicals into the fine oil mud and sand. At the same time, the stirring blades 373 and the stirring fan components 374 also fully mix the injected chemicals with the fine oil mud and sand.

[0034] Reference Figure 1 , Figure 10 to Figure 11 The coarse material mixing assembly 41 includes a mixing drum 411 fixedly connected to the opposite side of the screening and mixing mechanism 3 and the press 2, a leakage disk 413 is fixedly connected to the inner middle part of the mixing drum 411, a hollow liquid injection ring 412 is fixedly connected to the inside of the mixing drum 411 and located above the leakage disk 413, the liquid injection ring 412 is provided with an annular groove at the center position away from the mixing drum 411, and a plurality of drainage holes connected to the liquid injection ring 412 are provided in the inner annular array of the annular groove, and a generator 414 is arranged at the center position of the leakage disk 413, the generator 414 is mainly composed of a rotor, a stator, a bearing, a battery and a casing, a rotating column 415 is fixedly connected to the inner ring of the bearing of the generator 414, the generator 414 is electrically connected to the electric air release valve of the air injection box 38, and a plurality of fan blades 416 with inconsistent directions are alternately fixedly connected to the linear array on the outer peripheral surface of the rotating column 415.

[0035] The fine material stirring assembly 43 includes a rotating rod 431 rotatably connected to the inside of the fine material liquid collecting box 42. The rod body of the rotating rod 431 is fixedly connected to a plurality of drain discs 432 in a linear array. The outer peripheral surface of each drain disc 432 is fixedly connected to a plurality of hollow cones 433 in an annular array.

[0036] By using the injection ring 412 and the leakage plate 413 in the coarse material mixing component 41, it is possible to inject chemicals into the coarse oil mud and stir the chemicals injected into the coarse oil mud, so that the coarse oil mud and the chemicals are fully mixed, and the fine material stirring component 43 can further stir and mix the fine oil mud and the chemicals.

[0037] Reference Figure 11 to Figure 12 The upper end surface of the medicine storage box 5 is fixedly connected with a three-way transmission tube 51, and the three-way transmission tube 51 has an output end and two input ends. The output end of the three-way transmission tube 51 is connected with the medicine storage box 5 through a pipeline, and one of the input ends of the three-way transmission tubes 51 is fixedly connected with a medicine input tube 52, and one end of the medicine input tube 52 away from the three-way transmission tube 51 passes through the mixing cylinder 411 and is connected with the injection circle 412, and the other input end of the three-way transmission tube 51 is fixedly connected with a diverter valve 53, and the diverter valve 53 has an input end and two output ends, and the other input end of the three-way transmission tube 51 is connected with the input end of the diverter valve 53 through a pipeline, and both output ends of the diverter valve 53 are fixedly connected with a diverter tube 54, and one end of the diverter tube 54 away from the diverter valve 53 passes through the partition box 32 and is air-tightly rotatably connected with the positioning plate 371 on the same side.

[0038] The chemical storage box 5 can be used to store the chemical agents required for the oil mud sand dehydration device to separate water and oil, and the chemical agents can be transmitted to the fine material mixing component 37 and the coarse material mixing component 41 at different times and in different amounts through the diverter valve 53.

[0039] The operating principle of this embodiment is as follows: Step 1: First, connect the feed pipe 346 in the injection assembly 34 with the previous process of the oil mud sand, so that the oil mud sand is transferred to the equipment through the injection assembly 34 for dehydration operation (the equipment in this specification refers to the oil mud sand dehydration device). When the oil mud sand is transferred in the feed pipe 346, the oil mud sand will first be temporarily stored in the distribution ball 345, and the distribution ball 345 can evenly transfer the oil mud sand stored inside to the four distribution pipes 344 at different positions. The four distribution pipes 344 synchronously transfer the oil mud sand to different positions of the distribution frame 342. The oil sludge sand is placed in the material distribution frame 342 at multiple positions synchronously, ensuring that the oil sludge sand is evenly distributed in the entire material distribution frame 342, avoiding the problem of concentrated or uneven distribution. Then, the oil sludge sand in the material distribution frame 342 passes through the injection pipe 343 and is discharged into the surroundings of the separation component 35 in the screening barrel 33, so that the amount of oil sludge sand around the separation component 35 is consistent. When the oil sludge sand enters the screening barrel 33, the driver for driving the fixed disk 351 in the separation component 35 to rotate, which is arranged outside the partition box 32, is also started synchronously, so that the two One of the two fixed disks 351 rotates, and as the fixed disk 351 rotates, the multiple conical blocks 352 disposed between the two fixed disks 351 also start to rotate, and the rotation of the multiple conical blocks 352 also drives the other fixed disk 351 to rotate, so that the separation assembly 35 rotates as a whole. As the conical block 352 rotates, the oil mud and sand distributed around the conical block 352 are moved by the concave and convex blocks 354 distributed between the conical block 352 and the concave. The oil sludge sand starts to rotate under the action of the groove 353 and the protrusion 354 (the reason why the oil sludge sand rotates: the rotation of the conical block 352 drives the oil sludge sand to rotate together, and the groove 353 and the protrusion 354 increase the friction and interference of the material, so that the oil sludge sand produces a rotational motion under the joint action of these forces). As the oil sludge sand rotates, the fine holes 332 in the screening barrel 33 begin to screen the oil sludge sand (the specifications of the fine holes 332 are such that only fine oil sludge can pass through), thereby discharging the fine oil sludge sand from the screening barrel 33, while the coarse oil sludge sand remains inside the screening barrel 33.

[0040] Among them, when the oil sludge sand enters the screening barrel 33, the electric air release valve in the gas injection box 38 is opened (the power of the electric air release valve comes from the generator 414 in the coarse material mixing component 41, and the opening and closing of the electric air release valve is determined by the oil sludge sand. When the oil sludge sand enters the screening barrel 33, the electric air release valve is opened, and when the oil sludge sand stops entering the screening barrel 33, the electric air release valve is closed). The opening of the electric air release valve allows the compressed nitrogen or oxygen stored in the gas injection box 38 to be injected into the rotating fixed disk 351 through the gas injection pipe 381. Since the fixed disk 351 is hollow, the fixed disk 351 will transmit the nitrogen or oxygen injected therein to the gas delivery pipes 361 of the multiple gas injection components 36 at the edge of the fixed disk 351. At this time, since the gas injection component 36 is set in the rotating separation component 35, the oil sludge sand will cover the gas injection component 36, so the gas injection component 36 also rotates under the action of the rotating separation component 35 and the rotating oil mud sand, and the gas pipe 361 continuously discharges nitrogen or oxygen through the gas injection plate 362 and the exhaust pipe 363, thereby injecting nitrogen or oxygen into the oil mud sand (nitrogen or oxygen into the oil mud sand can optimize the effect of chemical agents in the oil mud sand dehydration process. Nitrogen maintains the stability and uniform distribution of the agent by reducing oxidation and bubble generation; oxygen helps to promote the reaction rate of the agent, especially when oxidation is required, thereby improving the dehydration efficiency), and the stirring plate 364 and the inclined plate 365 in the gas injection plate 362 can stir the nitrogen or oxygen injected into the oil mud sand, so that the nitrogen or oxygen can be evenly distributed in the oil mud sand. At the same time, the inclined plate 365 can also promote the rotation and flipping of the oil mud sand, thereby promoting the discharge of fine oil mud sand in the oil mud sand from the screening barrel 33; When the oil sludge sand enters the screening barrel 33, the heating rod 322 is also started (the heating rod 322, the air injection box 38 and the separation component 35 are started synchronously) to start heating the oil sludge sand (the suitable temperature of the oil sludge sand is usually between 60°C and 150°C, but the specific temperature should be adjusted according to the composition and processing requirements of the oil sludge sand. For example, if you want to reduce viscosity and improve fluidity, usually 70°C to 90°C is sufficient). Heating the oil sludge sand enhances its fluidity, which helps to mix and transport it more evenly during the processing process.

[0041] Step 2: At this time, the fine oil mud sand discharged from the screening barrel 33 and the coarse oil mud sand retained in the screening barrel 33 will have two different situations: The fine oil sludge discharged from the screening barrel 33 will enter the fine material mixing area of ​​the partition box 32, and a fine material mixing component 37 is provided in the fine material mixing area of ​​the partition box 32. The fine material mixing component 37 can inject chemical agents (such as flocculants or coagulants) into the fine oil sludge. The chemical agents can promote the aggregation and sedimentation of solid particles, so as to more effectively separate the solid and liquid in the oil sludge. The chemical agents in the fine material mixing component 37 are transmitted to the diverter valve 53 through the three-way transmission pipe 51 in the agent storage box 5 (the agent storage box 5 contains a water pump by default), and the diverter valve 53 can evenly transmit the chemical agents transmitted by the three-way transmission pipe 51 to the fine material mixing components 37 in the two fine material mixing areas of the partition box 32 through the diverter pipe 54.

[0042] When the fine oil sludge enters the fine material mixing area of ​​the partition box 32, the fine oil sludge is screened out from the screening barrel 33 due to inertia. Therefore, the fine oil sludge has a certain initial speed when it just enters the fine material mixing area of ​​the partition box 32, so that it collides with the stirring blades 373 in the fine material mixing component 37, causing the multiple stirring blades 373 to rotate in sequence, thereby stirring the fine oil sludge. At the same time, the chemical agent transmitted to the fine material mixing component 37 is sprayed onto the liquid injection block 375 set in the square tube 372. The fine oil sludge is mixed with the chemical agent in the rotating state, and the dispersion cone 376 in the fine material mixing component 37 can disperse the fine oil sludge discharged from the screening barrel 33, so that the injection blocks 375 and the stirring blades 373 located on both sides of the dispersion cone 376 are in contact with the fine oil sludge, thereby preventing the fine oil sludge from accumulating in the fine material mixing area of ​​the partition box 32, thereby affecting the mixing of the fine oil sludge and the chemical agent, and the mixed fine oil sludge and the chemical agent will enter the fine material liquid catching box 42 through the fine hole 332; The fine oil sludge in the fine material mixing area discharged into the separation box 32 will be stirred and mixed with the chemical agent, thereby prolonging the flocculation time of the chemical agent and the fine oil sludge. The fine oil sludge fully reacts with the chemical agent during a longer contact time, which helps to form a more stable flocculent body. At the same time, the long contact time can make the chemical agent more evenly distributed on the fine particles, avoiding the fine oil sludge from being unable to flocculate due to too short a contact with the chemical agent, and at the same time ensuring that the fine oil sludge obtains sufficient chemical action, thereby balancing the overall treatment effect.

[0043] Coarse oily mud and sand retained in the screening barrel 33: Due to the high-speed rotation of the separation component 35, the coarse oily mud and sand retained in the screening barrel 33 enter the coarse material mixing component 41 through the coarse hole 331 at a slow speed. Due to the centrifugal force generated by the high-speed rotation of the separation component 35, the coarse oily mud and sand are strongly thrown toward the barrel wall in the screening barrel 33, resulting in a slow movement speed of the coarse oily mud and sand inside the barrel. When the coarse oily mud and sand enter the coarse material mixing component 41 through the coarse hole 331, the centrifugal force causes them to slide along the barrel wall and gradually settle downward, reducing the speed directly passing through the coarse hole 331, thereby slowing down the transfer speed of the oily mud and sand.

[0044] Step 3: When the fine oil sludge mixed with the chemical agent enters the fine material liquid catching box 42 through the fine hole 332, the hollow cone 433 in the fine material stirring component 43 will capture the fine oil sludge when the fine oil sludge falls into the fine material liquid catching box 42 through the fine hole 332, thereby offsetting the kinetic energy of the fine oil sludge when it falls. When the hollow cone 433 captures the fine oil sludge, the hollow cone 433 converts the speed of the fine oil sludge when it falls into the force of the rotation of the rotating rod 431, so that the coarse oil sludge can be injected with chemicals and the chemicals injected into the coarse oil sludge can be stirred, so that the coarse oil sludge and the chemicals are fully mixed. The fine material stirring component 43 can also further stir and mix the fine oil sludge and the chemicals. At the same time, the rotation of the rotating rod 431 can consume the speed of the fine oil sludge when it falls. After the fine oil sludge passes through the fine material liquid catching box 42, it will enter the press 2 for separation of water and oil sludge.

[0045] The coarse oil mud sand enters the mixing barrel 411 of the coarse material mixing assembly 41 through the coarse hole 331, and the coarse oil mud sand collides with the fan blade 416 when falling, so that the speed of the coarse oil mud when falling drives the fan blade 416 to rotate, and the rotating fan blade 416 further drives the rotating column 415 to rotate, and the rotation of the rotating column 415 drives the generator 414 to generate electricity, and part of the electricity generated by the generator 414 is used to provide electricity for the operation of the electric air release valve, and the other part is stored in the battery, so as to provide electricity for the electric air release valve when the equipment is just running; When the coarse oil mud collides with the fan blades 416, the injection circle 412 also starts to spray chemicals onto the coarse oil mud, and the fan blades 416 rotate while mixing the coarse oil mud, thereby mixing the coarse oil mud with the chemicals. The coarse oil mud mixed with the chemicals will enter the press 2 through the leak plate 432.

[0046] Among them, since the fine oil mud sand is decelerated by the fine material stirring component 43, the coarse oil mud sand and the fine oil mud sand enter the press 2 at the same time, and the press 2 squeezes out the moisture in the oil mud sand through mechanical pressure, thereby reducing the water content of the mud and making the dehydrated solid matter drier.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil sludge dehydration device, characterized in that: include: A base (1), wherein an upper end surface of the base (1) is provided with a press (2) for dehydrating oil sludge and sand; A screening and mixing mechanism (3), the screening and mixing mechanism (3) comprising four support columns (31) fixedly connected to the four corners of the upper end surface of the press (2), the four support columns (31) being fixedly connected to a partition box (32) at one end away from the press (2), the inner middle portion of the partition box (32) being fixedly connected to a screening barrel (33), the upper end surface of the partition box (32) being provided with an injection assembly (34) for injecting oil sludge into the screening barrel (33), the inner middle portion of the screening barrel (33) being provided with a separation assembly (35) for stirring the oil sludge, a plurality of gas injection assemblies (36) for injecting nitrogen or oxygen into the oil sludge being provided in a circular array on the inner edge of the separation assembly (35), and two fine material mixing assemblies (37) being symmetrically provided on the inner wall of the partition box (32) with the screening barrel (33) as the center; A capture and mixing mechanism (4), the capture and mixing mechanism (4) comprising a coarse material mixing assembly (41) arranged on the surface of the screening and mixing mechanism (3) opposite to the press (2), and the coarse material mixing assembly (41) corresponds in position to the screening barrel (33), two fine material liquid capture boxes (42) are symmetrically fixedly connected on both sides of the surface of the screening and mixing mechanism (3) opposite to the press (2), and the fine material liquid capture boxes (42) correspond in position to the fine material mixing assembly (37), a fine material stirring assembly (43) for stirring oil mud and sand is arranged at the center position inside the fine material liquid capture box (42), and a chemical agent storage box (5) for storing chemical agents is fixedly connected to the side of the press (2).

2. The oil sludge sand dehydration device according to claim 1, characterized in that: The inner wall of the partition box (32) is symmetrically fixedly connected to a pair of partition plates (321), each pair of the partition plates (321) having two inner walls that are evenly fixedly connected to the partition box (32), the pair of the partition plates (321) divides the interior of the partition box (32) into a gas injection separation zone and two fine material mixing zones, and the gas injection separation zone is located in the middle, the inner wall of the gas injection separation zone is symmetrically provided with a pair of heating rods (322), the inner bottom annular array of the gas injection separation zone of the partition box (32) is provided with multiple layers of first holes (323), each layer of the first holes (323) has a plurality of, and each layer of the first holes (323) has a plurality of The number gradually decreases from the outside to the inside. A plurality of second holes (234) are fixedly connected in a linear array at the inner bottom of the fine material mixing zone of the partition box (32). The screening barrel (33) is fixedly connected to the inner bottom of the gas injection separation zone of the partition box (32). The side of the partition sheet (321) away from the inner wall of the partition box (32) contacts the outer peripheral surface of the screening barrel (33). A plurality of coarse holes (331) corresponding to and connected to the first holes (323) are formed on the lower end surface of the screening barrel (33). A plurality of fine holes (332) are formed in a rectangular array on the outer peripheral surface of the screening barrel (33) facing the direction of the two fine material mixing components (37).

3. The oil sludge sand dehydration device according to claim 2, characterized in that: The injection assembly (34) comprises a barrel cover (341) fixedly connected to the upper end surface of the screening barrel (33); a square material distribution frame (342) is fixedly connected to the center position of the barrel cover (341); the top of the square material distribution frame (342) passes through the upper end surface of the partition box (32); the bottom of the square material distribution frame (342) passes through the barrel cover (341); a plurality of injection tubes (343) are fixedly connected in a rectangular array on one side of the square material distribution frame (342) facing the screening barrel (33); four material distribution tubes (344) are fixedly connected on one side of the square material distribution frame (342) away from the screening barrel (33); the four material distribution tubes (344) are respectively connected to four corners of the square material distribution frame (342); one end of the four material distribution tubes (344) away from the square material distribution frame (342) is commonly fixedly connected to a material distribution ball (345); and the upper end surface of the material distribution ball (345) is fixedly connected to a feed tube (346).

4. The oil sludge sand dehydration device according to claim 3, characterized in that: The separation assembly (35) comprises two hollow fixed disks (351) rotatably connected to the opposite surfaces of the screening barrel (33) and the barrel cover (341); a driver for driving one of the fixed disks (351) to rotate is disposed on the outer side of the separation box (32); a plurality of conical blocks (352) are fixedly connected to the opposite surfaces of the two fixed disks (351) in a linear array; and the conical outer peripheral surface of each conical block (352) is alternately provided with grooves (353) and protrusions (354) in an annular array; The outer side of the partition box (32) is fixedly connected to a gas injection box (38), the gas injection box (38) consisting of an airtight box and an electric air release valve, the airtight box storing compressed nitrogen or oxygen, the output end of the upper end surface of the gas injection box (38) is fixedly connected to a gas injection pipe (381), the end of the gas injection pipe (381) away from the gas injection box (38) passes through the barrel cover (341) and is connected to the fixed plate (351) in an airtight rotational manner.

5. The oil sludge sand dehydration device according to claim 1, characterized in that: The gas injection assembly (36) comprises a gas delivery pipe (361) which is connected to opposite surfaces of two fixed disks (351) in an airtight rotation manner; the outer peripheral surface of the gas delivery pipe (361) is alternately fixedly connected to a gas injection disk (362) and a stirring disk (364); the outer peripheral surface of the gas injection disk (362) is fixedly connected to a plurality of exhaust pipes (363) in an annular array; a notch is provided at the center of the stirring disk (364); a plurality of groups of inclined plates (365) are fixedly connected in an annular array within the notch of the stirring disk (364); each group of the inclined plates (365) has a plurality of inclined plates, and the inclination directions of the plurality of inclined plates (365) in each group are alternately opposite.

6. The oil sludge sand dehydration device according to claim 1, characterized in that: The fine material mixing assembly (37) comprises two positioning plates (371) rotatably connected to the inner walls of the fine material mixing area on both sides of the partition box (32); the opposite surfaces of the two positioning plates (371) are fixedly connected to a square tube (372); the square tube (372) has four surfaces; a dispersion cone (376) is fixedly connected to the center of the square tube (372); the dispersion cone (376) is composed of a plurality of symmetrical and gradually decreasing circular plates; the square tube (372) is symmetrically fixed with the dispersion cone (376) as the center. A pair of stirring blades (373) are fixedly connected and a pair of liquid injection blocks (375) are fixedly connected, and the liquid injection blocks (375) are arranged close to the dispersion cone (376). The stirring blades (373) and the liquid injection blocks (375) are alternately distributed on the surrounding surfaces of 372. A plurality of nozzles are fixedly connected in a rectangular array on one side of each of the liquid injection blocks (375) facing the stirring blades (373). A plurality of holes are arranged in a rectangular array on the side of each of the stirring blades (373), and a stirring fan member (374) rotates in each hole.

7. The oil sludge sand dehydration device according to claim 1, characterized in that: The coarse material mixing assembly (41) comprises a mixing cylinder (411) fixedly connected to the surface of the screening and mixing mechanism (3) opposite to the press (2); a material leakage disk (413) is fixedly connected to the inner middle portion of the mixing cylinder (411); a hollow liquid injection ring (412) is fixedly connected inside the mixing cylinder (411) and located above the material leakage disk (413); an annular groove is provided at the center of a side of the liquid injection ring (412) away from the mixing cylinder (411); and a plurality of annular grooves are provided inside the annular grooves to be connected to the liquid injection ring. A plurality of drainage holes are connected to the ring (412), a generator (414) is arranged at the center of the leakage plate (413), the generator (414) is mainly composed of a rotor, a stator, a bearing, a battery and a shell, the inner ring of the bearing of the generator (414) is fixedly connected to a rotating column (415), the generator (414) is electrically connected to the electric deflation valve of the air injection box (38), and the outer peripheral surface of the rotating column (415) is linearly arrayed and alternately fixedly connected to a plurality of fan blades (416) with inconsistent directions.

8. The oil sludge sand dewatering device according to claim 7, characterized in that: The fine material stirring assembly (43) comprises a rotating rod (431) rotatably connected to the interior of the fine material liquid collecting box (42); a plurality of drain discs (432) are fixedly connected to the rod body of the rotating rod (431) in a linear array; and a plurality of hollow cones (433) are fixedly connected to the outer peripheral surface of each drain disc (432) in an annular array.

9. The oil sludge sand dehydration device according to claim 8, characterized in that: The upper end surface of the medicine storage box (5) is fixedly connected to a three-way transmission pipe (51), the three-way transmission pipe (51) having an output end and two input ends, the output end of the three-way transmission pipe (51) being connected to the medicine storage box (5) via a pipeline, one of the input ends of the three-way transmission pipe (51) being fixedly connected to a medicine input pipe (52), the end of the medicine input pipe (52) away from the three-way transmission pipe (51) passing through the mixing cylinder (411) and being connected to the injection ring (412), The other input end of the three-way transmission tube (51) is fixedly connected to a diverter valve (53), the diverter valve (53) having an input end and two output ends, and the other input end of the three-way transmission tube (51) is connected to the input end of the diverter valve (53) through a pipeline, and the two output ends of the diverter valve (53) are both fixedly connected to a diverter tube (54), and one end of the diverter tube (54) away from the diverter valve (53) passes through the partition box (32) and is airtightly rotatably connected to the positioning plate (371) on the same side.

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