Efficient separation and extraction device for extracting rock asphalt from oil sand

Abstract

The invention relates to an efficient separation and extraction device for extracting rock asphalt from oil sand. The efficient separation and extraction device comprises a flotation tank, and an inflation stirring mechanism is arranged at the bottom end in the flotation tank; a foam tank is arranged in the center of the upper end of the flotation tank; a lifting defoaming device is arranged at the upper end of the foam tank; after the lifting defoaming device descends, the upper end of the foam tank is closed, and foam in the foam tank is subjected to all-directional scouring defoaming; a grating plate is arranged at the upper end of the liquid level in the flotation tank; wave blowing devices are arranged in the middles of two sides of the flotation tank; scraping mechanisms are respectively arranged at the upper end of the flotation tank and above the two grating plates; the scraping mechanism comprises a scraping plate, a sliding rail, a sliding block and a reciprocating driving assembly, the sliding rail is transversely arranged on the inner wall of the flotation tank, the scraping plate is arranged on the sliding block, and the sliding block is matched with the sliding rail to be horizontally arranged on the inner walls of the two ends of the flotation tank in a sliding mode and is driven by the reciprocating driving assembly. The scraping efficiency is improved, and the foam material containing asphalt particles can be quickly and efficiently separated and recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy oil extraction and processing, and in particular to a high-efficiency separation and extraction device for extracting rock asphalt from oil sands. Background Art

[0002] Oil sands, also known as tar sands, are a mixture of asphalt, water, sand, and clay. They are currently one of the world's most important potential petroleum resources, with widespread distribution and abundant resources. The efficient, energy-efficient, and low-pollution extraction of rock asphalt from oil sands has long been a challenge plaguing the industry. During the asphalt extraction process, asphalt is removed from the surface of oil sand particles through agitation, forming a suspension of asphalt, sand, and water. This suspension then undergoes a flotation process, where air bubbles are introduced into the suspension. Hydrophobic asphalt particles preferentially adhere to the bubble surfaces, forming a "bubble-asphalt" aggregate that rises to the surface, while hydrophilic impurities such as sand and clay sink to the bottom, achieving a preliminary separation of the asphalt from mineral impurities.

[0003] Currently, traditional flotation machines use rotating scrapers on both sides to scrape the upper layer of foam into a froth tank for collection. The low speed of these rotating scrapers results in low scraping efficiency, causing a large amount of foam to accumulate on the upper surface of the liquid. Due to the long residence time of the accumulated foam layer, the bubbles may burst or merge, causing the attached asphalt particles to fall back into the slurry, significantly reducing the asphalt recovery rate. This necessitates the addition of multiple flotation units to meet asphalt separation requirements. Increasing the scraper speed can easily cause the scrapers to eject the foam from the froth tank, making traditional rotating scraper mechanisms incapable of meeting the requirements for efficient asphalt separation. Secondly, because the foam is too viscous to flow freely, the prior art incorporates a spray water line above the froth tank to remove the foam by adding water. However, the fixed spray direction and narrow coverage of the spray line limit the ability to remove foam. In areas not covered by the water, the foam gradually hardens and adheres to the tank walls due to a lack of hydraulic propulsion, forming a blockage that affects proper transport. Summary of the Invention

[0004] In response to the above-mentioned problems, the present invention discloses a high-efficiency separation and extraction device for extracting rock asphalt from oil sands. A reciprocating scraper is used to scrape the upper layer of foam on the liquid surface horizontally to improve the scraping efficiency; a closed structure is used to flush and defoam the foam in the tank in all directions, solving the problems of low scraping efficiency and poor foam material transportation of traditional rotary scrapers.

[0005] The specific technical solutions are as follows:

[0006] A high-efficiency separation and extraction device for extracting rock asphalt from oil sands, comprising a flotation tank, wherein an aeration and stirring mechanism is provided at the bottom end of the flotation tank, the aeration and stirring mechanism being used to aerate and stir the suspension and generate foam; a foam tank is provided at the center of the upper end of the flotation tank along its length, one end of the foam tank extends to the inner wall of one end of the flotation tank, the other end of the foam tank penetrates the side wall of the flotation tank and extends outward, and the bottom of the foam tank is tilted downward and is used to guide the foam material out of the flotation tank; a lifting and defoaming device is provided at the upper end of the foam tank, which seals the upper end of the foam tank after it is lowered and flushes and defoams the foam in the foam tank in all directions; a grid plate is provided horizontally at the upper end of the liquid surface in the flotation tank, the grid plates are distributed on both sides of the foam tank, and the upper surface of the grid plate flush with the top of the foam tank; a waving device is provided in the middle of both sides of the flotation tank, which is used to agitate the liquid in the flotation tank so that the upper foam intermittently overflows the grille plate; a scraper mechanism is provided on the upper end of the flotation tank above the two grille plates, which is used to scrape the foam overflowing the grille plate into the foam tank; the scraper mechanism includes a scraper, a slide rail, a slider and a reciprocating drive assembly, the slide rail is horizontally arranged on the inner wall of the flotation tank, the scraper is arranged on the slider, and the bottom of the scraper is close to the surface of the grille plate, the slider cooperates with the slide rail to slide horizontally on the inner walls of both ends of the flotation tank and is driven by the reciprocating drive assembly respectively, so as to realize the reciprocating displacement of the scraper along the two sides of the flotation tank to push the foam on the flotation tank into the foam tank.

[0007] Preferably, the reciprocating drive assembly includes a swing frame, a swing rod, a telescopic rod, and a first drive device. The upper end of the swing frame is rotatably connected to the inner wall of the flotation tank through a horizontally arranged pin shaft, and the lower end of the swing frame is slidably connected to the telescopic rod, and the lower end of the telescopic rod is rotatably connected to the surface of the slider. A movable groove is provided in the middle of the swing frame; one end of the swing rod horizontally passes through the flotation tank through a pin shaft and is driven to rotate by the first drive device, and the other end of the swing rod is rotatably connected to a movable block through a pin shaft, and the movable block is slidably arranged in the movable groove, so that the first drive device drives the swing rod to rotate and drives the swing frame to swing left and right under the cooperation of the movable block and the movable groove, thereby driving the slider to move back and forth on the slide rail.

[0008] Preferably, the scraper mechanism is also provided with a guide plate for flipping the scraper, and a rotating shaft is provided on the upper side of both ends of the scraper. The two ends of the scraper are rotatably arranged on the slider through the rotating shaft, and the lower side of both ends of the scraper is provided with an elastic guide shaft that can be extended and retracted in the horizontal direction; the guide plates are respectively arranged on the inner walls of both ends of the flotation tank, and the surface of the guide plate is provided with a guide groove for guiding the displacement of the elastic guide shaft, so that the scraper is lifted upward along the rotating shaft when it is reset to avoid driving the foam away from the foam tank.

[0009] Preferably, a torsion spring is sleeved on the rotating shaft, which presses one side of the scraper and causes the scraper to rotate away from the bubble groove; a limit block is provided on the slider to press against the other side of the scraper, and the scraper is limited by the limit block under the action of the torsion spring to maintain a vertical state.

[0010] Preferably, the guide chute is composed of a translation section, a lifting section, and a sinking section in sequence to form a triangular structure connected end to end. The translation section is horizontally arranged, and the end of the translation section close to the foam groove is provided with a sinking step and connected to one end of the lifting section. The end of the translation section away from the foam groove is provided with a lifting step and connected to one end of the sinking section, so that the elastic guide rod is embedded in the guide chute and cyclically displaced on the guide chute under the drive of the reciprocating displacement of the scraper, so as to realize the flipping of the scraper along the rotating axis.

[0011] Preferably, the lifting and defoaming device includes a guide rail, a cover shell, a spray pipe, and a connecting rod drive assembly. The guide rails are respectively longitudinally arranged in the middle of the inner walls at both ends of the flotation tank. The cover shell has a semicircular arc structure and is horizontally arranged above the foam tank. Closing plates are provided at both ends of the cover shell and are slidably arranged on the guide rails, so that the two ends of the cover shell are respectively driven to lift and lower by the lifting drive device. The inner center of the cover shell is horizontally connected to the spray pipe through a fixed rod. Several spray heads are evenly distributed along the circumference on the surface of the spray pipe. Support plates are provided on both sides of the cover shell that are horizontally bent outward, so that after the cover shell is lowered, it is placed on both sides of the foam tank through the support plates and the upper end of the foam tank is closed, and the inside of the foam tank is flushed and defoamed in all directions through the spray heads.

[0012] Preferably, the connecting rod drive assembly includes a rotating rod, a connecting rod, and a second driving device. One end of the rotating rod horizontally penetrates the side wall of the flotation tank through a pin shaft and is driven to rotate by the second driving device on the outer wall of the flotation tank. The other end of the rotating rod is rotatably connected to the upper end of the connecting rod through a pin shaft, and the lower end of the connecting rod is hingedly connected to the hinge seat at one end of the top of the cover shell, so that the second driving device drives the cover shell to rise and fall through the cooperation of the rotating rod and the connecting rod.

[0013] Preferably, the bottom of the foam tank is arranged in an arc-shaped structure, the cover shell is in a semicircular arc-shaped structure, and the two sides of the cover shell correspond to the positions of the inner walls of the two sides of the foam tank.

[0014] Preferably, the aeration stirring mechanism includes a stirring impeller and an air intake hood, the bottom shaft end of the stirring impeller passes through the bottom of the flotation tank and is driven to rotate by a drive motor on the outer wall of the flotation tank; the lower end of the air intake hood is open and covers the stirring impeller, one side of the air intake hood is connected to an air intake pipe, one end of the air intake pipe passes through the side wall of the flotation tank and is connected to an external air source.

[0015] Preferably, a rectangular opening is provided on the side wall of the flotation tank, and the wave-blowing device is arranged at the rectangular opening, and the wave-blowing device includes a wave-blowing plate, a telescopic rubber sleeve, and a driving cylinder. The wave-blowing plate is located at the rectangular opening and is adapted to the size and shape of the rectangular opening. The upper end of the wave-blowing plate is hingedly connected to the inner wall of the flotation tank by a hinge, and one side surface of the wave-blowing plate is connected to one end of the telescopic rubber sleeve, and the other end of the telescopic rubber sleeve is fixedly connected to the rectangular opening to achieve closing of the opening. The driving cylinder is movably arranged outside the flotation tank through a bracket, and the piston rod of the driving cylinder is hingedly connected to the surface of the wave-blowing plate through a hinge seat, thereby pushing the wave-blowing plate to move back and forth in the flotation tank and agitate the liquid to make the liquid level fluctuate.

[0016] The beneficial effects of the present invention are embodied in:

[0017] (1) Compared with the traditional method of scraping foam using a rotary scraper, the present invention uses a reciprocating scraper to scrape the entire upper layer of foam on the liquid surface horizontally, which greatly improves the scraping efficiency and effectively avoids the problem of excessive foam accumulation. In addition, the scraper can be lifted upward when returning to avoid causing foam to accumulate at the corners of the tank, ensuring that the foam material containing asphalt particles can be quickly and efficiently separated and recovered.

[0018] (2) The present invention adopts a wave-blowing device in conjunction with a scraping mechanism, which can raise the liquid level and allow the foam to periodically float out of the upper layer of the grid plate, so as to achieve efficient scraping operations in conjunction with the scraper movement cycle, thereby further improving the scraping efficiency.

[0019] (3) A liftable cover is used to seal the upper end of the foam tank, and the foam in the tank is flushed and defoamed in all directions through a spray pipe. When the water flows into the inner wall of the cover, the splashing water can flush the foam and make the water flow along the inner wall of the cover to the inner wall of the foam tank, thereby flushing the foam adhering to the inner wall of the foam tank. The coverage is wider and the flushing effect is better, which effectively solves the problem of poor foam material transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the scraping mechanism of the present invention when it is working.

[0022] Figure 3 This is a schematic diagram of the structure of the lifting defoaming device of the present invention when it is working

[0023] Figure 4 It is a schematic diagram of the connection structure between the scraper and the guide plate in the present invention.

[0024] Figure 5 It is an enlarged schematic diagram of the lifting defoaming device in the present invention.

[0025] Explanation of reference numerals: flotation tank 1, feed pipe 101, rectangular opening 102, stirring impeller 21, air intake cover 22, air intake pipeline 23, drive motor 24, foam tank 3, grid plate 4;

[0026] Lifting defoaming device 5, guide rail 51, cover 52, fixed rod 521, spray pipe 53, spray head 531, rotating rod 54, connecting rod 55, second driving device 56;

[0027] Wave-beating device 6, wave-beating plate 61, telescopic rubber sleeve 62, driving cylinder 63;

[0028] Scraper device 7, scraper 71, rotating shaft 711, torsion spring 712, elastic guide shaft 713, slide rail 72, slider 73, limit block 731, swing frame 74, movable groove 741, movable block 742, swing rod 75, telescopic rod 76, first drive device 77, guide plate 78, guide groove 79, translation section 791, lifting section 792, sinking section 793, lifting step 794, sinking step 795. DETAILED DESCRIPTION

[0029] To make the technical solution of the present invention more clear and specific, the present invention is further described below with reference to the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived from conventional reasoning shall fall within the scope of protection of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] Please see the attached Figure 1-5The present embodiment provides an efficient separation and extraction device for extracting rock asphalt from oil sands, including a flotation tank 1, which has a rectangular tank structure, one end of which is connected to a feed pipe 101, and an aeration and stirring mechanism is provided at the bottom end of the flotation tank, which is used to aerate and stir the suspension and generate foam; a foam tank 3 is provided at the center of the upper end of the flotation tank along its length direction, one end of the foam tank 3 extends to the inner wall of one end of the flotation tank 1, and the other end of the foam tank 3 penetrates the side wall of the flotation tank and extends outward, and the bottom of the foam tank 3 is inclined downward and is used to guide the foam material out of the flotation tank; a lifting and defoaming device 5 is provided at the upper end of the foam tank 3, which closes the upper end of the foam tank 3 after being lowered and flushes and defoams the foam in the foam tank 3 in all directions; a grid plate 4 is provided horizontally at the upper end of the liquid surface in the flotation tank, and the grid plates 4 are distributed on both sides of the foam tank 3, The upper surface of the grid plate 4 is flush with the top of the foam tank 3; a waving device 6 is provided in the middle of both sides of the flotation tank 1, which is used to agitate the liquid in the flotation tank so that the upper foam intermittently overflows the grid plate 4 upward; a scraping mechanism is provided on the upper end of the flotation tank 1 above the two grid plates 4, and the scraping mechanism is used to scrape the foam overflowing the grid plate 4 into the foam tank 3; the scraping mechanism includes a scraper 71, a slide rail 72, a slider 73 and a reciprocating drive assembly, the slide rail 72 is horizontally arranged on the inner wall of the flotation tank, the scraper 71 is arranged on the slider 73, and the bottom of the scraper 71 is arranged close to the surface of the grid plate 4, and the slider 73 cooperates with the slide rail 72 to slide horizontally on the inner walls of both ends of the flotation tank 1 and is driven by the reciprocating drive assembly respectively, so that the scraper 71 is reciprocated along the two sides of the flotation tank 1 to push the foam on the flotation tank into the foam tank 3.

[0032] In this embodiment, the reciprocating drive assembly includes a swing frame 74, a swing rod 75, a telescopic rod 76, and a first drive device 77. The upper end of the swing frame 74 is rotatably connected to the inner wall of the flotation tank through a horizontally arranged pin shaft, and the lower end of the swing frame 74 is slidably connected to the telescopic rod 76. The lower end of the telescopic rod 76 is rotatably connected to the surface of the slider 73. A movable groove 741 is provided in the middle of the swing frame 74; one end of the swing rod 75 horizontally passes through the flotation tank 1 through a pin shaft and is driven to rotate by the first drive device 77, and the other end of the swing rod 75 is rotatably connected to a movable block 742 through a pin shaft. The movable block 742 is slidably set in the movable groove 741, so that the first drive device 77 drives the swing rod 75 to rotate and drives the swing frame 74 to swing left and right under the cooperation of the movable block 742 and the movable groove 741, thereby driving the slider 73 to move back and forth on the slide rail 72.

[0033] Preferably, the scraping mechanism is also provided with a guide plate 78 for flipping the scraper 71, and a rotating shaft 711 is provided on the upper side of both ends of the scraper 71. The two ends of the scraper 71 are rotatably set on the slider 73 through the rotating shaft 711, and the lower side of both ends of the scraper 71 is provided with an elastic guide shaft 713 that can be extended and retracted in the horizontal direction. One end of the elastic guide shaft 713 is supported by a spring so that it can be extended and retracted in the horizontal direction after being subjected to force. The elastic guide shaft 713 is a prior art and will not be described in detail here; the guide plates 78 are respectively provided on the inner walls of the flotation tank at both ends, and the surface of the guide plates 78 is provided with a guide groove for guiding the displacement of the elastic guide shaft 713, so that the scraper 71 is lifted upward along the rotating shaft 711 when it is reset to avoid driving the foam away from the foam tank 3.

[0034] In this embodiment, a torsion spring 712 is provided on the rotating shaft 711, which presses one side of the scraper 71 and causes the scraper 71 to rotate away from the bubble groove; a limit block 731 is provided on the slider 73, which presses against the other side of the scraper 71, and the scraper 71 is limited by the limit block 731 under the action of the torsion spring 712 to maintain a vertical state, so that the scraper 71 will not rotate during the forward scraping process, and when the scraper 71 returns, it is flipped and lifted upward with the cooperation of the elastic guide shaft 713 and the guide groove.

[0035] In this embodiment, the guide chute is composed of a translation section 791, a lifting section 792, and a sinking section 793 in sequence to form a triangular structure connected end to end. The translation section 791 is horizontally arranged, and the translation section 791 is provided with a sinking step 795 at one end close to the foam groove 3 and connected to one end of the lifting section 792. When the scraper 71 moves to a section close to the foam groove 3, the elastic guide shaft 713 and the translation section 791 move to the lifting section 792. Due to the sinking step 795, the elastic guide shaft 713 extends outward and is embedded in the groove of the lifting section 792 and is limited by the inner wall of the lifting section 792. Therefore, when the scraper 71 returns, the elastic guide shaft 713 moves along the lifting section 792, thereby lifting the lower end of the scraper 71 upward; during the return process of the scraper 71, the elastic guide shaft 713 moves from the lifting section 792 to the sinking section 793. During this process, the depth of the wire chute gradually becomes shallower and the elastic guide shaft 713 retracts a part. The end of the translation section 791 away from the foam groove 3 is provided with a lifting step 794 and connected to one end of the sinking section 793. When the scraper 71 moves to the end, the elastic guide shaft 713 transitions to the translation section 791 through the lifting step, so that the elastic guide rod is embedded in the guide groove and cyclically displaced on the guide groove under the drive of the reciprocating movement of the scraper 71.

[0036] In this embodiment, the lifting and defoaming device 5 includes a guide rail 51, a cover 52, a spray pipe 53, and a connecting rod drive assembly. The guide rails 51 are respectively longitudinally arranged at the middle of the inner wall at both ends of the flotation tank 1. The cover 52 is a semicircular arc structure and is horizontally arranged above the foam tank 3. Closure plates are set at both ends of the cover 52 and are slidably arranged on the guide rail 51 through sliding blocks, so that the two ends of the cover 52 are driven to rise and fall by the lifting drive device. The center of the inner side of the cover 52 is horizontally connected to the spray pipe 53 through a fixed rod 521. One end of the spray pipe 53 passes through the cover 52 upward and is connected to the external water source through a telescopic hose. Next, the surface of the spray pipe 53 is evenly distributed along the circumference, with a number of spray heads 531, allowing the spray pipe 53 to spray water in all directions. The cover 52 is horizontally bent outward on both sides, with support plates. After the cover 52 is lowered, it is placed on both sides of the foam tank 3 through the support plates and seals the upper end of the foam tank 3. The multiple spray heads 531 on the spray pipe 53 can then be used to flush and defoam the interior of the foam tank 3 in all directions. Because the spray heads 531 face the inner wall of the cover 52, when the water impacts, the splashing water can flush the foam, increasing the flushing coverage and ensuring the defoaming effect. When the scraper 71 moves toward the foam tank 3, the cover 52 rises and the spray pipe 53 stops spraying water. When the scraper 71 returns, the cover 52 descends, and the spray pipe 53 begins spraying water and flushing the foam tank 3 to defoam, thus achieving periodic scraping and defoaming operations.

[0037] In this embodiment, the bottom of the foam tank 3 is arranged in an arc-shaped structure, the cover shell 52 is a semicircular arc structure, and the two sides of the cover shell 52 correspond to the inner walls of the two sides of the foam tank 3, so that the water flow can flow along the inner wall of the cover shell 52 to the inner wall of the foam tank 3, thereby effectively flushing the foam adhering to the inner wall of the foam tank 3.

[0038] In this embodiment, the connecting rod drive assembly includes a rotating rod 54, a connecting rod 55, and a second driving device 56. One end of the rotating rod 54 horizontally penetrates the side wall of the flotation tank through a pin shaft and is driven to rotate by the second driving device 56 on the outer wall of the flotation tank. The other end of the rotating rod 54 is rotatably connected to the upper end of the connecting rod 55 through the pin shaft, and the lower end of the connecting rod 55 is hingedly connected to the hinge seat at one end of the top of the cover shell 52, so that the second driving device 56 drives the cover shell 52 to rise and fall through the cooperation of the rotating rod 54 and the connecting rod 55.

[0039] In another embodiment, in order to reduce equipment costs, the first drive device 77 and the second drive device 56 can be replaced by a servo motor, and the scraping mechanism and the lifting and defoaming device 5 are synchronously driven by the servo motor. The servo motor is arranged in the middle of the outer wall of the flotation tank 1 through a bracket. A driving shaft is provided on the output shaft of the servo motor. The driving shaft passes through the side wall of the flotation tank and is connected to the pin shaft at one end of the rotating rod 54, thereby directly driving it to rotate. A driving pulley is also provided on the driving shaft, and two grooves are provided on the driving pulley. A transmission belt is respectively connected to a transmission pulley in the two grooves. The positions of the two transmission pulleys correspond to the pin shaft positions of the two swing rods 75 and are fixedly connected thereto, thereby realizing that a servo motor drives the scraping mechanism and the lifting and defoaming device 5 to be synchronously driven.

[0040] In this embodiment, the aeration and stirring mechanism includes a stirring impeller 21 and an air intake hood 22. The bottom shaft end of the stirring impeller 21 passes through the bottom of the flotation tank 1 and is driven to rotate by a drive motor 24 on the outer wall of the flotation tank; the lower end of the air intake hood 22 is opened and covers the stirring impeller 21. One side of the air intake hood 22 is connected to an air intake pipe 23, and one end of the air intake pipe 23 passes through the side wall of the flotation tank and is connected to an external air source.

[0041] Preferably, a rectangular opening 102 is provided on the side wall of the flotation tank, and a wave-drum device 6 is provided at the rectangular opening 102. The wave-drum device 6 includes a wave-drum plate 61, a telescopic rubber sleeve 62, and a driving cylinder 63. The wave-drum plate 61 is located at the rectangular opening 102 and is adapted to the size and shape of the rectangular opening 102. The upper end of the wave-drum plate 61 is hingedly connected to the inner wall of the flotation tank 1 through a hinge. One side surface of the wave-drum plate 61 is connected to one end of the telescopic rubber sleeve 62, and the other end of the telescopic rubber sleeve 62 is connected and fixed to the rectangular opening 102 to achieve closing of the opening and prevent liquid from leaking. The driving cylinder 63 is movably arranged outside the flotation tank through a bracket. The driving cylinder 63 The piston rod is hingedly connected to the surface of the corrugated plate 61 through a hinged seat, thereby pushing the corrugated plate 61 to move back and forth in the flotation tank and agitate the liquid to make the liquid level fluctuate. The activity cycle of the corrugated plate 61 is synchronized with the activity cycle of the scraper 71. When the scraper 71 moves toward the foam tank 3, the cylinder 63 is driven at the same time to push the corrugated plate 61 and agitate the liquid in the flotation tank 1 to make the foam overflow the grid plate 4; when the scraper 71 returns, the cylinder 63 is driven to drive the corrugated plate 61 to reset, so that the liquid level drops, so that the foam can periodically float out of the upper layer of the grid plate 4, so as to cooperate with the movement cycle of the scraper 71 to achieve efficient scraping operation.

[0042] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A highly efficient separation and extraction device for extracting rock asphalt from oil sands, comprising a flotation tank (1), wherein an aeration and stirring mechanism is provided at the bottom end of the flotation tank (1), the aeration and stirring mechanism being used to aerate and stir a suspension and generate foam; characterized in that: A foam trough (3) is provided at the center of the upper end of the flotation tank along its length direction, one end of the foam trough (3) extends to the inner wall of one end of the flotation tank (1), the other end of the foam trough (3) penetrates the side wall of the flotation tank (1) and extends outward, and the bottom of the foam trough (3) is arranged to be inclined downward and is used to guide the foam material out of the flotation tank; a lifting and defoaming device (5) is provided at the upper end of the foam trough (3), and after the lifting and defoaming device (5) is lowered, the upper end of the foam trough (3) is sealed and the foam in the foam trough (3) is flushed and defoamed in all directions; a grid plate (4) is horizontally provided at the upper end of the liquid surface in the flotation tank, and the grid plate (4) is distributed on both sides of the foam trough (3); a wave-blowing device (6) is provided in the middle of both sides of the flotation tank (1), and the wave-blowing device (6) is used to agitate the liquid in the flotation tank so that the upper foam Intermittently overflowing the grid plate (4) upward; a scraping mechanism is provided on each of the upper ends of the flotation tank above the two grid plates (4); the scraping mechanism is used to scrape the foam overflowing the grid plate (4) into the foam tank (3); the scraping mechanism comprises a scraper (71), a slide rail (72), a slider (73) and a reciprocating drive assembly; the slide rail (72) is transversely arranged on the inner wall of the flotation tank (1); the scraper (71) is arranged on the slider (73); the bottom of the scraper (71) is arranged close to the surface of the grid plate (4); the slider (73) cooperates with the slide rail (72) to slide horizontally on the inner walls of both ends of the flotation tank and is driven by the reciprocating drive assembly respectively, so that the scraper (71) is reciprocated along the two sides of the flotation tank to push the foam on the flotation tank (1) into the foam tank (3).

2. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 1, characterized in that: The reciprocating drive assembly comprises a swing frame (74), a swing rod (75), a telescopic rod (76), and a first drive device (77). The upper end of the swing frame (74) is rotatably connected to the inner wall of the flotation tank through a horizontally arranged pin shaft, the lower end of the swing frame (74) is slidably connected to the telescopic rod (76), and the lower end of the telescopic rod (76) is rotatably connected to the surface of the slider (73). A movable groove (741) is provided in the middle of the swing frame (74); one end of the swing rod (75) is rotatably connected to the inner wall of the flotation tank through a horizontally arranged pin shaft. The first drive device (77) is driven to rotate by the first drive device (77), and the other end of the swing rod (75) is rotatably connected to a movable block (742) through a pin shaft. The movable block (742) is slidably arranged in the movable groove (741), so that the first drive device (77) drives the swing rod (75) to rotate and drives the swing frame (74) to swing left and right under the cooperation of the movable block (742) and the movable groove (741), thereby driving the slider (73) to move back and forth on the slide rail (72).

3. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 1, characterized in that: The scraping mechanism is further provided with a guide plate (78) for turning the scraper (71). Rotating shafts (711) are provided on the upper sides of both ends of the scraper (71). The two ends of the scraper (71) are rotatably arranged on the slider (73) via the rotating shafts (711). Elastic guide shafts (713) that can be extended and retracted in the horizontal direction are provided on the lower sides of both ends of the scraper (71). The guide plates (78) are respectively arranged on the inner walls of both ends of the flotation tank. The surface of the guide plates (78) is provided with a guide groove for guiding the displacement of the elastic guide shaft (713), so that the scraper (71) is lifted upward along the rotating shaft (711) when resetting to avoid driving the foam away from the foam tank (3).

4. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 3, characterized in that: The rotating shaft (711) is provided with a torsion spring (712), which presses against one side of the scraper (71) and causes the scraper (71) to rotate in a direction away from the bubble groove; the slider (73) is provided with a limiting block (731) which abuts against the other side of the scraper (71), and causes the scraper (71) to be limited by the limiting block (731) under the action of the torsion spring (712) to maintain a vertical state.

5. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 3, characterized in that: The guide chute is sequentially composed of a translation section (791), a lifting section (792), and a sinking section (793) to form a triangular structure connected end to end. The translation section (791) is arranged horizontally. The end of the translation section (791) close to the foam groove (3) is provided with a sinking step (795) and connected to one end of the lifting section (792). The end of the translation section (791) away from the foam groove (3) is provided with a lifting step and connected to one end of the sinking section (793), so that the elastic guide rod is embedded in the guide chute and cyclically displaced on the guide chute under the reciprocating movement of the scraper (71), so as to realize the flipping of the scraper (71) along the rotating shaft (711).

6. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 1, characterized in that: The lifting and defoaming device (5) comprises a guide rail (51), a cover (52), a spray pipe (53), and a connecting rod drive assembly. The guide rails (51) are respectively longitudinally arranged at the middle of the inner wall at both ends of the flotation tank. The cover (52) is in a semicircular arc structure and is horizontally arranged above the foam tank (3). Closing plates are provided at both ends of the cover (52) and are slidably arranged on the guide rails (51), so that the two ends of the cover (52) are respectively driven to lift and lower by the lifting drive device. The inner center of the cover (52) is horizontally connected to the spray pipe (53) through a fixed rod (521). The surface of the spray pipe (53) is evenly distributed along the circumference. Support plates are provided on both sides of the cover (52) and are horizontally bent outward. After the cover (52) is lowered, it is placed on both sides of the foam tank (3) through the support plates and closes the upper end of the foam tank (3). The interior of the foam tank (3) is flushed and defoamed in all directions through the spray heads (531).

7. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 6, characterized in that: The connecting rod driving assembly comprises a rotating rod (54), a connecting rod (55), and a second driving device (56). One end of the rotating rod (54) passes horizontally through the side wall of the flotation tank (1) through a pin shaft and is driven to rotate by the second driving device (56) on the outer wall of the flotation tank (1). The other end of the rotating rod (54) is rotatably connected to the upper end of the connecting rod (55) through a pin shaft. The lower end of the connecting rod (55) is hingedly connected to a hinge seat at one end of the top of the cover shell (52), so that the second driving device (56) drives the cover shell (52) to rise and fall through the rotating rod (54) and the connecting rod (55).

8. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 6, characterized in that: The bottom of the foam groove (3) is arranged in an arc-shaped structure, the cover shell (52) is in a semicircular arc-shaped structure, and the two sides of the cover shell (52) correspond to the positions of the inner walls of the two sides of the foam groove (3).

9. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 1, characterized in that: The aeration stirring mechanism comprises a stirring impeller (21) and an air intake cover (22). The bottom shaft end of the stirring impeller (21) passes through the bottom of the flotation tank and is driven to rotate by a driving motor (24) on the outer wall of the flotation tank (1). The lower end of the air intake cover (22) is open and covers the stirring impeller (21). One side of the air intake cover (22) is connected to an air intake pipeline (23). One end of the air intake pipeline (23) passes through the side wall of the flotation tank and is connected to an external air source.

10. The high-efficiency separation and extraction device for extracting rock asphalt from oil sands according to claim 1, characterized in that: A rectangular opening (102) is provided on the side wall of the flotation tank. The waving device (6) is provided at the rectangular opening (102). The waving device (6) comprises a waving plate (61), a telescopic rubber sleeve (62), and a driving cylinder (63). The waving plate (61) is located at the rectangular opening (102) and is adapted to the size and shape of the rectangular opening (102). The upper end of the waving plate (61) is hingedly connected to the inner wall of the flotation tank through a hinge. One side surface of the waving plate (61) is connected to one end of the telescopic rubber sleeve (62). The other end of the telescopic rubber sleeve (62) is fixedly connected to the rectangular opening (102) to achieve sealing of the opening. The driving cylinder (63) is movably provided outside the flotation tank through a bracket. The piston rod of the driving cylinder (63) is hingedly connected to the surface of the waving plate (61) through a hinge seat, thereby pushing the waving plate (61) to reciprocate in the flotation tank and agitate the liquid to make the liquid level fluctuate.

Images