Oily mud pretreatment device

Abstract

The present invention belongs to the technical field of sludge treatment, and relates to an oil-containing sludge pretreatment device, including a base, a separation cylinder, a feed pipe, a liquid outlet pipe, a mud discharge pipe, a driving mechanism, a screening mechanism and a gas injection mechanism, wherein the top of the base is connected to a separation cylinder, the middle of the separation cylinder is connected to a feed pipe, the lower part of the separation cylinder is connected to a liquid outlet pipe, the middle of the bottom of the separation cylinder is connected to a mud discharge pipe, the separation cylinder is provided with a driving mechanism and a gas injection mechanism, the separation cylinder is provided with a screening mechanism, the gas injection mechanism includes a pressure relief valve and a gas injection pipe, the separation cylinder is connected to a gas injection pipe, and the lower part of the separation cylinder is connected to a pressure relief valve. When the present invention treats the oil-containing sludge, it can not only filter out the oil by filtering, but also melt the grease attached to the sludge by injecting high-temperature gas, so that the grease is also separated from the sludge, and the grease is prevented from being attached to the sludge, and the treatment effect achieved is better.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment and relates to an oily sludge pretreatment device. Background Art

[0002] Oily sludge is produced during the oil extraction process and is the main pollutant generated during the development, production, and processing of oil. Depending on the cause, it can be divided into ground sludge, tank bottom sludge, ground oil spills, and refinery oily sludge. Because solid oily sludge contains more impurities and fluid oily sludge has a higher viscosity, both solid and fluid oily sludge require preliminary stirring or water-addition slurrying before separating the oil and sludge. The treated oily sludge becomes oily sludge, which also requires pretreatment to separate the oil, water, and sludge.

[0003] At present, the method for separating the oil and mud of oily mud is usually to perform filtration treatment through a filter press. However, when using a filter press, the liquid in the oily mud can be filtered out to a large extent. However, some paste-like oil in the oily mud will adhere to the mud. Due to its adhesion, this part of the oil is difficult to be discharged by filtration and is easily discharged together with the mud, resulting in this part of the mud still having certain pollution and poor treatment effect. Summary of the Invention

[0004] In view of this, the present invention provides an oily mud pretreatment device.

[0005] The technical solution of the present invention is: an oil-containing mud pretreatment device, comprising a base, a separation cylinder, a feed pipe, a liquid outlet pipe, a mud discharge pipe, a driving mechanism, a screening mechanism and an air injection mechanism, the top of the base is connected to the separation cylinder, the middle of the separation cylinder is connected to the feed pipe, the lower part of the separation cylinder is connected to the liquid outlet pipe, the middle of the bottom of the separation cylinder is connected to the mud discharge pipe, the mud discharge pipe passes through the side wall of the base, the separation cylinder is provided with a driving mechanism and a gas injection mechanism for injecting high-temperature gas into the separation cylinder, the separation cylinder is provided with a screening mechanism for separating mud and oil, the air injection mechanism comprises a pressure relief valve and an air injection pipe, the separation cylinder is connected to the air injection pipe, high-temperature gas can be injected into the separation cylinder through the air injection pipe, and the lower part of the separation cylinder is connected to the pressure relief valve.

[0006] In one embodiment, the driving mechanism includes a driving motor, a transmission rod and a spiral feeding shaft. The driving motor is installed in the middle of the top of the separation cylinder. The output shaft of the driving motor is connected to the transmission rod. The bottom of the transmission rod is connected to the spiral feeding shaft. The spiral feeding shaft is located inside the mud discharge pipe.

[0007] In one embodiment, the screening mechanism includes a partition, a partition cylinder, a spiral feeding screen plate, a driving gear, a transmission gear and an inner gear ring. The upper part of the separation cylinder is rotatably connected to the separation cylinder, and the bottom of the separation cylinder is rotatably connected to the partition. The pressure relief valve is located above the partition, and the partition is connected to the separation cylinder. One end of the liquid outlet pipe located in the separation cylinder passes through the partition, and the lower part of the separation cylinder body is connected to the spiral feeding screen plate. The discharge end of the feed pipe is located in alignment with the lower part of the spiral feeding screen plate. The upper part of the separation cylinder is evenly spaced with feed ports, and the upper part of the spiral feeding screen plate is located below the feed port. The upper part of the separation cylinder body is connected to the inner gear ring, and the top of the separation cylinder is rotatably connected to three transmission gears evenly spaced along the circumferential direction. The three transmission gears are all engaged with the inner gear ring. The transmission rod is connected to a drive gear, and the drive gear is engaged with the transmission gear.

[0008] In one embodiment, a flushing mechanism is also included, which includes a liquid nozzle, a guide tube and an injection tube. The top of the separation cylinder is connected to the injection tube, the upper part of the separation cylinder is connected to the guide tube, and the bottom of the guide tube is evenly spaced and connected to multiple liquid nozzles. The guide tube and the injection tube are connected.

[0009] In one embodiment, a toggle mechanism is also included, which includes an inner cylinder, a toggle rod, a sliding plate, a connecting gear and a rack. The inner cylinder is connected to the partition cylinder, and four groups of toggle rods are connected to the partition cylinder at uniform intervals along the circumferential direction. Each group of toggle rods is provided with four toggle rods, and the toggle rods are located at the channel position of the spiral feeding screen plate. The toggle rods are connected to the connecting gear, and a reciprocating thread groove is provided on the upper part of the transmission rod. The upper part of the partition cylinder is slidably connected to a sliding plate, and the sliding plate is threadedly matched with the reciprocating thread groove. Four racks are connected to the bottom of the sliding plate at uniform intervals along the circumferential direction, and the four racks are respectively engaged with the connecting gears on the four groups of toggle rods.

[0010] In one embodiment, a heating mechanism is further included, and the heating mechanism includes a protection frame and a heating wire. The protection frame is installed at the lower part of the inner cylinder, and the heating wire is installed in the protection frame.

[0011] In one embodiment, stirring blades are further included, and the lower part of the transmission rod is evenly spaced with stirring blades.

[0012] In one embodiment, a ladder and a walkway are further included. The ladder is provided on the separation cylinder, and the walkway is installed on the upper part of the separation cylinder. The upper part of the ladder is connected to the walkway.

[0013] Beneficial effects: 1. When treating oily mud, the present invention can not only filter out the oil by filtering, but also melt the grease attached to the mud by injecting high-temperature gas, so that the grease is separated from the mud, avoiding grease attachment to the mud, and achieving a better treatment effect.

[0014] 2. When the present invention is transporting oily mud, the oily mud can be broken up by rotating the toggle rod, so that the inside of the oily mud is also exposed to the outside, so that the high-temperature gas can more conveniently melt the grease attached to the inside of the oily mud, thereby assisting in melting the grease inside the oily mud and further improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of the present invention from another perspective;

[0017] Figure 3 is a cross-sectional view of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the driving mechanism and screening mechanism of the present invention;

[0019] Figure 5 This is a schematic diagram of the first structure of the toggle mechanism and the screening mechanism of the present invention;

[0020] Figure 6 This is a schematic diagram of a second structure of the toggle mechanism and the screening mechanism of the present invention;

[0021] Figure 7 This is a schematic structural diagram of the digging mechanism after the screening mechanism of the present invention is cut open;

[0022] Figure 8 It is a structural schematic diagram of the heating mechanism of the present invention;

[0023] Figure 9 It is a structural schematic diagram of the stirring blade and the transmission rod of the present invention.

[0024] Markings in the figure are: 1-base, 2-separation cylinder, 3-feed pipe, 4-liquid outlet pipe, 5-mud discharge pipe, 61-drive motor, 62-transmission rod, 63-screw feed shaft, 70-partition, 71-partition cylinder, 72-screw feed screen plate, 73-drive gear, 74-transmission gear, 75-inner ring gear, 81-pressure relief valve, 82-air injection pipe, 83-liquid nozzle, 84-guide pipe, 85-liquid injection pipe, 91-inner cylinder, 92-toggle rod, 93-reciprocating thread groove, 94-sliding plate, 95-connecting gear, 96-rack, 101-protection frame, 102-heating wire, 11-stirring blade, 12-ladder, 13-walking frame. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0026] An oily mud pretreatment device, such as Figures 1-4 As shown, it includes a base 1, a separation cylinder 2, a feed pipe 3, a liquid outlet pipe 4, a mud discharge pipe 5, a driving mechanism, a screening mechanism and an air injection mechanism. The top of the base 1 is connected to the separation cylinder 2, the middle of the right side of the separation cylinder 2 is connected to the feed pipe 3, the lower left side of the separation cylinder 2 is connected to the mud discharge pipe 5, the middle of the bottom of the separation cylinder 2 is connected to the mud discharge pipe 5, and the mud discharge pipe 5 passes through the side wall of the base 1. The separation cylinder 2 is provided with a driving mechanism and an air injection mechanism for injecting high-temperature gas into the separation cylinder 2, and the separation cylinder 2 is provided with a screening mechanism for separating mud and oil.

[0027] like Figure 3 and Figure 4 As shown, the driving mechanism includes a driving motor 61, a transmission rod 62 and a spiral feeding shaft 63. The driving motor 61 is installed in the middle of the top of the separation cylinder 2. The output shaft of the driving motor 61 is connected to the transmission rod 62. The bottom of the transmission rod 62 is connected to the spiral feeding shaft 63. The spiral feeding shaft 63 is located inside the mud discharge pipe 5 so that the spiral feeding shaft 63 can rotate to transport the sludge.

[0028] like Figure 3 and Figure 4As shown, the screening mechanism includes a partition 70, a partition cylinder 71, a spiral feeding screen plate 72, a driving gear 73, a transmission gear 74 and an inner gear ring 75. The upper inner part of the separation cylinder 2 is rotatably connected to the partition cylinder 71, and the outer bottom of the separation cylinder 71 is rotatably connected to the partition 70. The partition 70 is connected to the separation cylinder 2. One end of the liquid outlet pipe 4 located in the separation cylinder 2 passes through the partition 70. The outer lower part of the partition cylinder 71 is connected to the spiral feeding screen plate 72. The discharge end of the feed pipe 3 is located in alignment with the lower part of the spiral feeding screen plate 72, so that the material in the feed pipe 3 can be fed into the spiral feeding screen plate 72, so that the spiral feeding screen plate 72 can transport the material by rotation. Feed ports are evenly spaced apart on the upper part of the separation cylinder 71, and the upper part of the spiral feeding screen plate 72 is located below the feed port, so that the spiral feeding screen plate 72 can transport the soil into the feed port, thereby transporting the soil to the inside of the separation cylinder 71. The upper part of the separation cylinder 71 is connected with an inner ring gear 75, and the top of the separation cylinder 2 is connected with three transmission gears 74 that are evenly spaced and rotated along the circumferential direction. The three transmission gears 74 are all engaged with the inner ring gear 75, and the transmission rod 62 is connected with a driving gear 73, and the driving gear 73 is engaged with the transmission gear 74, so that when the driving motor 61 is in operation, it can drive the separation cylinder 71 to rotate through the driving gear 73, the transmission gear 74 and the inner ring gear 75.

[0029] like Figure 3 As shown, the gas injection mechanism includes a pressure relief valve 81 and an gas injection pipe 82. The gas injection pipe 82 is connected to the left side of the top of the separation cylinder 2. High-temperature gas can be injected into the separation cylinder 2 through the gas injection pipe 82 to melt the grease attached to the surface of the soil so that the grease can flow out. The pressure relief valve 81 is connected to the left side of the lower part of the separation cylinder 2. The pressure relief valve 81 is located above the partition 70.

[0030] like Figure 3 As shown, a flushing mechanism is also included, which includes a liquid nozzle 83, a guide tube 84 and an injection tube 85. The injection tube 85 is connected to the right side of the top of the separation cylinder 2, and the upper part of the separation cylinder 2 is connected to the guide tube 84. A plurality of liquid nozzles 83 are evenly spaced and connected to the bottom of the guide tube 84. The guide tube 84 and the injection tube 85 are connected.

[0031] When the oily mud needs to be pretreated, this device can be used. When in use, the oily mud is first added to the separation cylinder 2 through the feed pipe 3. The added oily mud will be located in the partition at the bottom of the spiral feeding screen plate 72. Then the drive motor 61 can be controlled to operate to drive the transmission rod 62 to rotate. When the transmission rod 62 rotates, it drives the inner ring gear 75 to rotate through the driving gear 73 and the transmission gear 74. When the inner ring gear 75 rotates, it can drive the separation cylinder 71 to rotate. When the separation cylinder 71 rotates, it can drive the spiral feeding screen plate 72 to rotate, thereby transporting the oily mud upward. During the transportation process, the oil on the oily mud will fall through the sieve holes on the spiral feeding screen plate 72 and finally be supported by the partition 70. At the same time, high-temperature gas can be injected into the separation cylinder 2 through the air injection pipe 82, thereby melting the grease attached to the oily mud, and the melted oil drips through the sieve holes on the spiral feeding screen plate 72, and the pressure relief valve 81 can be used in the separation cylinder 2 When the internal air pressure is too high, the gas will be automatically discharged to avoid the air pressure in the separation cylinder 2 being too high. When the gas is injected, water can also be injected into the liquid injection pipe 85. The water flows through the guide pipe 84 and then sprayed out through the liquid nozzle 83, thereby spraying the oil-containing mud, helping to flush the oil in the mud to the partition 70, and the oil and water at the partition 70 will flow into the liquid outlet pipe 4 and be discharged through the liquid outlet pipe 4. With the transportation of the spiral feeding screen plate 72, the treated mud can be transported to the feed port and enter the interior of the separation cylinder 71 through the feed port, and slide along the separation cylinder 71 to the bottom of the separation cylinder 2 and flow into the mud discharge pipe 5 position. When the transmission rod 62 rotates, it also drives the spiral feeding shaft 63 to rotate, thereby assisting in sending the mud at the mud discharge pipe 5 position out. In this way, the present device can be used to pre-treat the oil-containing mud, and in the process of treatment, the oil paste attached to the surface of the oil-containing mud can be separated from the mud by using high-temperature gas, and the separation effect achieved is better.

[0032] like Figure 5-Figure 7 As shown, it also includes a toggle mechanism, which includes an inner cylinder 91, a toggle rod 92, a sliding plate 94, a connecting gear 95 and a rack 96. The inner cylinder 91 is connected to the partition cylinder 71, and four groups of toggle rods 92 are rotatably connected on the partition cylinder 71 at uniform intervals in the circumferential direction, and each group of toggle rods 92 is provided with four. The toggle rods 92 are located in the channel position of the spiral feeding screen plate 72, and the toggle rods 92 are connected to the connecting gear 95. A reciprocating thread groove 93 is opened on the upper part of the transmission rod 62, and the sliding plate 94 is slidably connected to the upper part of the partition cylinder 71. The sliding plate 94 is threadedly matched with the reciprocating thread groove 93 so that the transmission rod 62 can drive the sliding plate 94 to move reciprocatingly up and down through the reciprocating thread groove 93 when it rotates. Four racks 96 are connected to the bottom of the sliding plate 94 at uniform intervals in the circumferential direction, and the four racks 96 are respectively engaged with the connecting gears 95 on the four groups of toggle rods 92.

[0033] When the transmission rod 62 rotates, it can drive the sliding plate 94 to move back and forth up and down through the reciprocating thread groove 93 thereon. When the sliding plate 94 moves back and forth up and down, it can drive the rack 96 to move back and forth up and down. When the rack 96 moves, it can poke the connecting gear 95 to rotate. When the connecting gear 95 rotates, it can drive the toggle rod 92 to rotate. When the spiral feeding screen plate 72 transports the oil-containing mud, the oil-containing mud will move to contact the toggle rod 92. At this time, the rotation of the toggle rod 92 can break up the oil-containing mud, so that the oil inside it is also exposed to the surface, allowing the high-temperature gas to better melt the oil inside the oil-containing mud, and the separation effect achieved is better. The mud sent into the separation cylinder 2 will also be located in the inner cylinder 91 and directly sent to the mud discharge pipe 5 through the inner cylinder 91 to assist in the discharge of the mud.

[0034] like Figure 8 As shown, a heating mechanism is also included, which includes a protective frame 101 and a heating wire 102. The protective frame 101 is installed at the lower part of the inner tube 91, and the heating wire 102 is installed in the protective frame 101. When the mud is discharged from the inner tube 91, the heating wire 102 can be controlled to operate to heat the inside of the inner tube 91, thereby heating the mud and drying the mud.

[0035] like Figure 9 As shown, stirring blades 11 are also included. The stirring blades 11 are evenly spaced and connected to the lower part of the transmission rod 62. When the transmission rod 62 rotates, the stirring blades 11 can drive the rotation. When the stirring blades 11 rotate, they can break up the discharged dried mud to prevent the mud from clumping after drying.

[0036] like Figure 1 As shown, it also includes a ladder 12 and a walking frame 13. The ladder 12 is provided on the front side of the separation cylinder 2, and the walking frame 13 is installed on the upper part of the separation cylinder 2. The upper part of the ladder 12 is connected to the walking frame 13. When maintenance is required or gas or liquid is added through the pressure relief valve 81 and the injection pipe 85, the ladder 12 can be used to climb to the walking frame 13 for operation.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An oily mud pretreatment device, characterized in that: The invention comprises a base (1), a separation cylinder (2), a feed pipe (3), a liquid outlet pipe (4), a mud discharge pipe (5), a driving mechanism, a screening mechanism and a gas injection mechanism, wherein the top of the base (1) is connected to the separation cylinder (2), the middle of the separation cylinder (2) is connected to the feed pipe (3), the lower part of the separation cylinder (2) is connected to the liquid outlet pipe (4), the lower part of the separation cylinder (2) is connected to the mud discharge pipe (5), the mud discharge pipe (5) passes through the side wall of the base (1), the separation cylinder (2) is provided with a driving mechanism and a gas injection mechanism for injecting high-temperature gas into the separation cylinder (2), the separation cylinder (2) is provided with a screening mechanism for separating mud and oil, the gas injection mechanism comprises a pressure relief valve (81) and a gas injection pipe (82), the separation cylinder (2) is connected to the gas injection pipe (82), and high-temperature gas can be injected into the separation cylinder (2) through the gas injection pipe (82), and the lower part of the separation cylinder (2) is connected to the pressure relief valve (81); The driving mechanism comprises a driving motor (61), a transmission rod (62) and a spiral feeding shaft (63); the driving motor (61) is installed in the middle of the top of the separation cylinder (2); the transmission rod (62) is connected to the output shaft of the driving motor (61); the bottom of the transmission rod (62) is connected to the spiral feeding shaft (63); and the spiral feeding shaft (63) is located inside the mud discharge pipe (5); The screening mechanism comprises a partition (70), a partition cylinder (71), a spiral feed screen plate (72), a driving gear (73), a transmission gear (74) and an inner gear ring (75); the upper inner portion of the separation cylinder (2) is rotatably connected to the partition cylinder (71); the bottom of the separation cylinder (71) is rotatably connected to the partition (70); the pressure relief valve (81) is located above the partition (70); the partition (70) is connected to the separation cylinder (2); one end of the liquid outlet pipe (4) located in the separation cylinder (2) passes through the partition (70); the lower outer portion of the separation cylinder (71) is connected to the spiral feed screen plate (71); 2), the discharge end of the feed pipe (3) is located in alignment with the lower part of the spiral feed screen plate (72), the upper part of the separation cylinder (71) is provided with feed ports at even intervals, the upper part of the spiral feed screen plate (72) is located below the feed port, the upper part of the separation cylinder (71) is connected to an inner gear ring (75), the top of the separation cylinder (2) is rotatably connected to three transmission gears (74) at even intervals along the circumferential direction, the three transmission gears (74) are all meshed with the inner gear ring (75), the transmission rod (62) is connected to a drive gear (73), the drive gear (73) is meshed with the transmission gear (74); It also includes a flushing mechanism, the flushing mechanism including a liquid spray head (83), a guide tube (84) and a liquid injection tube (85), the top of the separation cylinder (2) is connected to the liquid injection tube (85), the upper part of the separation cylinder (2) is connected to the guide tube (84), the bottom of the guide tube (84) is evenly spaced and connected to a plurality of liquid spray heads (83), and the guide tube (84) is connected to the liquid injection tube (85); The invention also comprises a toggle mechanism, the toggle mechanism comprising an inner cylinder (91), a toggle rod (92), a sliding plate (94), a connecting gear (95) and a rack (96); the inner cylinder (91) is connected to the inner part of the partition cylinder (71); four groups of toggle rods (92) are rotatably connected to the partition cylinder (71) at even intervals in the circumferential direction; each group of toggle rods (92) comprises four toggle rods; the toggle rods (92) are located at the channel position of the spiral feeding screen plate (72); A connecting gear (95) is connected to the moving rod (92), a reciprocating thread groove (93) is provided on the upper portion of the transmission rod (62), a sliding plate (94) is slidably connected to the upper portion of the inner portion of the partition cylinder (71), the sliding plate (94) is threadably engaged with the reciprocating thread groove (93), and four racks (96) are connected to the bottom of the sliding plate (94) at even intervals in the circumferential direction, and the four racks (96) are respectively meshed with the connecting gears (95) on the four groups of toggle rods (92).

2. The oily mud pretreatment device according to claim 1, characterized in that: It also comprises a heating mechanism, which comprises a protection frame (101) and a heating wire (102); the protection frame (101) is installed at the lower part of the inner cylinder (91), and the heating wire (102) is installed in the protection frame (101).

3. The oily mud pretreatment device according to claim 2, characterized in that: It also includes stirring blades (11), and the lower part of the transmission rod (62) is connected to the stirring blades (11) at even intervals.

4. The oily mud pretreatment device according to claim 1, characterized in that: It also comprises a ladder (12) and a walking frame (13); the ladder (12) is arranged on the separation cylinder (2); the walking frame (13) is installed on the upper part of the separation cylinder (2); and the upper part of the ladder (12) is connected to the walking frame (13).

Images