Pressure oil removal tank

Abstract

The invention discloses a pressure oil removal tank which comprises a tank body, an impeller driving mechanism, a waste heat recovery mechanism, a motor driving mechanism and a reaction kettle are sequentially arranged in the tank body from top to bottom, a steam driving mechanism is arranged on one side of the tank body, and the impeller driving mechanism comprises a driving impeller, a linkage structure, a swing structure and a sealing structure. The driving impeller, the swing structure and the sealing structure are connected through a linkage structure. The tank body adopts a vertical design, the driving impeller is driven to rotate through gravitational potential energy generated when waste liquid falls, then the swinging structure is driven to move through the linkage structure, the filter screen is vibrated, the material shoveling plate is continuously driven to move through the steam driving mechanism, and residues accumulated on the filter screen are discharged outwards; after shoveling, steam intermittently enters the reaction kettle to be reused, the situation that the oil-water separation effect is affected due to the fact that the pressure in the reaction kettle is too large can be avoided, the whole process is driven through steam, manual intervention is not needed, the using effect is good, and oil-water separation is more thorough.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield oily wastewater treatment, in particular to a pressure oil removal tank. Background Art

[0002] A pressure oil removal tank is a device specially used to treat oily wastewater. It separates the oil and water in the wastewater by physical methods to purify the water quality. This equipment is widely used in liquid transmission systems in many industries such as petroleum, chemical, metallurgy, electricity, textile and food. There are two types of pressure oil removal tanks: vertical oil removal tanks and horizontal oil removal tanks.

[0003] In the patent document with the publication number CN106277181A, a horizontal pressure oil removal tank is provided. In the device, three groups of bellows particle aggregators and two groups of oblique tube separators are arranged, so that the oilfield sewage entering through the water inlet pipe is processed by the bellows particle aggregators and the oblique tube separators in turn, and the separated oil enters the oil collecting tank arranged on the top of the tank body, the sludge enters the mud discharge tank arranged at the bottom of the tank body, and the treated water is discharged through the outlet pipe. However, in the process of oil sludge filtering, since the bellows particle aggregators and the oblique tube separators are both fixed, the sludge is easy to accumulate inside the bellows and the oblique tubes, causing blockage, and it is necessary to manually clean them regularly. In addition, oil-water separation is mainly to separate the upper oil liquid through the density difference between oil and water. This separation method is inefficient and has a poor separation effect, and it is impossible to completely separate the oil and water in the sewage. Therefore, a pressure oil removal tank is proposed, which is not easy to be blocked when filtering sludge, does not need to manually clean the sludge, and has a better oil-water separation effect. Summary of the invention

[0004] The object of the present invention is to provide a pressure oil removal tank to solve the problems of sludge clogging pipelines and incomplete oil-water separation mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A pressure oil removal tank comprises a tank body, wherein an impeller drive mechanism, a waste heat recovery mechanism, a motor drive mechanism and a reactor are sequentially arranged in the tank body from top to bottom, a steam drive mechanism is arranged on one side of the tank body, the impeller drive mechanism comprises a driving impeller, a linkage structure, a swing structure and a sealing structure, the driving impeller, the swing structure and the sealing structure are connected by the linkage structure, a filtering structure is arranged on the swing structure, and a slag discharge port is opened on the inner wall of the tank body at one side corresponding to the filtering structure; The waste heat recovery mechanism is arranged above the reactor, and the two are connected by a pipeline. The waste heat recovery mechanism is used to recover the waste heat generated in the reactor and use the waste heat to preheat the filtered waste liquid, and the waste heat recovery mechanism is also used to accelerate steam liquefaction; The motor drive mechanism includes a stirring structure and an up-and-down reciprocating motion structure, wherein the stirring structure is arranged inside the reactor and is used to stir the waste liquid in the reactor, and the up-and-down reciprocating motion structure is arranged at the top of the reactor and is used to drive the stirring structure to reciprocate up and down in the reactor; The steam driven mechanism includes a shoveling structure and a steam heating and pressurizing structure. The shoveling structure is arranged above the filtering structure. The shoveling structure is used to shovel away the residue accumulated on the filtering structure and discharge the residue outward from the residue discharge port. The steam heating and pressurizing structure is connected to the reactor and is used to heat and pressurize the waste liquid in the reactor.

[0006] As a further solution of the present invention: a feed channel is provided on the top of the tank body, and the driving impeller is rotatably connected to the feed channel through the impeller shaft, a first hopper is fixed inside the tank body below the feed channel, and a platform is fixed inside the tank body below the first hopper, a slide is slidably connected to the top of the platform, the slide is a frame structure, and a filter is fixed above it, an opening is provided on the inner wall of the platform corresponding to one side of the filter, and the waste liquid filtered by the filter flows downward from the provided opening, the filter, the slide and the platform cooperate to constitute the filtering structure, and a shovel plate is slidably connected to the top of the filter.

[0007] As a further scheme of the present invention: a column and a roller are respectively provided on both sides of the rear end of the top of the slide, the column is fixedly connected to the slide, and the roller is rotatably connected to the slide through a bracket, and a rotating plate is rotatably connected to the upper side of the tank body corresponding to the column and the roller through a transmission rod, and both ends of the rotating plate are rotatably connected to the roller, and the rollers at both ends of the rotating plate are arranged corresponding to the column, and an L-shaped lever is rotatably connected to one side of the rotating plate inside the tank body corresponding to the rotating plate, and the L-shaped lever is arranged above the roller, the long end of the L-shaped lever is against one side of the roller, and the short end of the L-shaped lever is arranged directly below the roller at one end of the rotating plate, and the rotating plate, the L-shaped lever, the column and the roller cooperate to constitute the swing structure, which is used to drive the slide to swing back and forth left and right on the platform.

[0008] As a further solution of the present invention: a second hopper is fixed inside the tank body corresponding to the bottom of the platform, a sealing plate is rotatably connected to the opening at the bottom end of the second hopper, a collection bin is fixed inside the tank body corresponding to the bottom of the second hopper, the second hopper is connected to the inside of the collection bin, and the two are separated and sealed by the sealing plate, and the sealing plate forms the sealing structure between the second hopper and the collection bin.

[0009] As a further solution of the present invention: one end of the impeller shaft rotates, penetrates the inner wall of the feed channel and extends to the rear of the feed channel, one end of the transmission rod rotates, penetrates the inner wall of the tank body and extends to the rear of the tank body, one end of the sealing plate shaft rotates, penetrates the inner wall of the tank body and extends to the rear of the tank body, one end of the impeller shaft, one end of the transmission rod, and one end of the sealing plate shaft are all fixed with pulleys, the impeller shaft and the two pulleys on the transmission rod are connected by a first belt transmission, the transmission rod and the two pulleys on the sealing plate shaft are connected by a second belt transmission, the three pulleys, the first belt and the second belt cooperate to form the linkage structure, and the driving impeller drives the swing structure and the sealing structure to move synchronously through the linkage structure.

[0010] As a further solution of the present invention: the material collection bin is arranged above the reactor, and the two are connected by a material guide pipe, a valve is installed on the material guide pipe, a plurality of air guide pipes are fixed on the top of the reactor, a heat exchange pipe is arranged in the material collection bin, the air inlet end of the heat exchange pipe is connected and fixed to the air guide pipe, the liquid outlet end of the heat exchange pipe passes through the inner wall of the material collection bin, the inner wall of the tank body and extends to the outside of the tank body, the material collection bin cooperates with the heat exchange pipe inside it to constitute the waste heat recovery mechanism.

[0011] As a further scheme of the present invention: the motor drive mechanism includes a casing, a hollow shaft and a linkage shaft, the casing is fixed on the top of the reactor, the linkage shaft is arranged in the casing, and one end of the linkage shaft movably passes through the casing, the inner wall of the reactor and extends to the interior of the reactor, a limited seat is arranged between the linkage shaft and the reactor, one end of the linkage shaft is movably inserted into the limited seat, the bottom end of the linkage shaft is connected and fixed to the hollow shaft through a connecting disk, a cavity is arranged inside the connecting disk, the hollow shaft is connected to the interior of the connecting disk, a plurality of self-priming impellers are fixed on the hollow shaft, a plurality of first air holes are opened on the inner wall of the connecting disk, a plurality of the self-priming impellers are each opened with a plurality of second air holes, the first air holes and the second air holes are connected through the hollow shaft and the cavity inside the connecting disk.

[0012] As a further solution of the present invention: a slide cylinder is slidably sleeved on one end of the linkage shaft, a driven gear is sleeved and fixed on the outside of the slide cylinder, the driven gear is rotatably connected to the casing through a bracket, a driving shaft is rotatably connected to the side of the casing corresponding to the linkage shaft, a driving gear is fixed on one end of the driving shaft, the driving gear is meshed with the driven gear for transmission, a motor is installed on the side of the casing corresponding to the driving shaft, one end of the motor output shaft is connected and fixed to one end of the driving shaft, the hollow shaft, the multiple self-priming impellers, the linkage shaft and the driving shaft, and the corresponding gear transmission structure are used in combination to constitute the stirring structure for stirring and mixing the waste liquid with high-temperature and high-pressure steam.

[0013] As a further solution of the present invention: a secondary helical gear is sleeved and fixed on the lower end of the linkage shaft body corresponding to the driven gear, one side of the secondary helical gear is meshed and connected with a linkage secondary gear, the linkage secondary gear is rotatably connected to the housing through a bracket, a driven crank is coaxially fixed on the linkage secondary gear, a main helical gear is sleeved and fixed on the lower end of the driving shaft body corresponding to the driving gear, one side of the main helical gear is meshed and connected with a linkage main gear, the linkage main gear is rotatably connected to the housing through a bracket, a driving crank is coaxially fixed on the linkage main gear, and the driving crank One end of the driven crank and one end of the driven crank are rotatably connected with a connecting rod, one end of the two connecting rods extend outward and the extended ends of the two connecting rods are located in the same plane, a linkage plate is provided between the extended ends of the two connecting rods, and the extended ends of the two connecting rods are rotatably connected to the linkage plate, the linkage sub-gear, the sub-helical gear, the driven crank, the main helical gear, the linkage main gear, the driving crank, the connecting rod and the linkage plate cooperate to constitute the up and down reciprocating motion structure, which is used to drive the stirring structure to perform up and down reciprocating motion inside the reactor.

[0014] As a further solution of the present invention: the steam drive mechanism includes a cylinder, a piston is slidably connected inside the cylinder, a piston rod is fixed to one end of the piston, one end of the piston rod slides through the inner wall of the cylinder and the inner wall of the tank body and extends to the inside of the tank body, one end of the piston rod is fixed to one side of the shoveling plate, and the cylinder, the piston, the piston rod and the shoveling plate cooperate to form the shoveling structure; A return spring is sleeved on the rod body of the piston rod, and two ends of the return spring are respectively connected and fixed to the piston and the inner wall of one side of the cylinder, and limit switches and blocks are provided at both ends inside the cylinder, and the limit switch and the block on the same side are arranged opposite to each other up and down, and an intake pipe and an outlet pipe are fixed to the upper and lower ends of one side of the cylinder body, respectively, an intake valve is installed on the intake pipe, and an exhaust valve is installed on the outlet pipe, one end of the outlet pipe is inserted into the reactor, and one end of the intake pipe is connected to high-temperature and high-pressure steam, and the cylinder, the outlet pipe, the piston and the reactor cooperate to constitute the steam heating and pressurizing structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the tank body adopts a vertical design, which makes full use of the gravitational potential energy of the oily and water waste liquid when it falls. The gravitational potential energy of the waste liquid when it falls drives the driving impeller to rotate, and the driving impeller then drives the swing structure and the sealing structure to move synchronously through the linkage structure, vibrating the filter screen to keep the filter holes unobstructed. At the same time, the filtered waste liquid is intermittently sent to the collection bin for storage, thereby reducing the storage pressure of the collection bin and avoiding the influence of too much waste liquid flowing into the collection bin at one time and the waste heat recovery and utilization effect of the collection bin. Furthermore, the shovel plate is continuously driven to move by the steam driving mechanism to discharge the residue accumulated on the filter screen to the outside, so as to keep the filter screen clean and the filtering effect. The steam in the steam driving mechanism will enter the reactor for reuse after pushing the shovel plate to perform a cycle of movement, and the steam is intermittently injected into the reactor, which is conducive to the mixing of steam and waste liquid. At the same time, it can avoid the problem of too much steam flowing into the reactor at one time and causing excessive pressure in the reactor, thereby avoiding the influence of oil-water separation effect. The whole process is driven by steam without manual intervention. The invention has the advantages of good use effect and more thorough oil-water separation; in the present invention, the main body of the stirring structure adopts a hollow shaft, and when the hollow shaft rotates, the air pressure outside the shaft body is greater than the air pressure inside the shaft body, and the external air will enter the interior of the connecting disk along the first air hole on the surface of the connecting disk, and then the air flows along the channel inside the hollow shaft and is discharged from the second air hole, so as to accelerate the mixing of high-temperature and high-pressure steam and waste liquid, and accelerate the evaporation of waste liquid. Furthermore, the up and down reciprocating motion structure is used to drive the hollow shaft to reciprocate up and down, which can accelerate the mixing and stirring of waste liquid and improve the mixing efficiency; in the present invention, the impeller driving mechanism is powered by the falling waste liquid, and there is no need to set up additional power output components such as motors, so the manufacturing cost is lower and the structure is more compact. When the impeller driving mechanism is in operation, the swing structure and the sealing structure can be synchronized and continuously operated, and there is no need to manually clean the filter screen, which saves manpower. At the same time, the steam driving mechanism is also completely driven by steam. During operation, it only needs to be connected to external steam for use, which is simple to operate and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0019] Figure 3 It is an expanded view of the internal structure of the present invention.

[0020] Figure 4 This is a first viewing angle diagram of the impeller drive mechanism in the present invention.

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Figure 6 This is a second viewing angle diagram of the impeller drive mechanism in the present invention.

[0023] Figure 7 It is a front view of the impeller driving mechanism of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the motor drive mechanism in the present invention.

[0025] Fig. 9 for Figure 8 Enlarged view of point B in the middle.

[0026] Fig.10 It is a front view of the internal structure of the steam drive mechanism in the present invention.

[0027] Fig.11 It is a front view of the internal structure of the aggregate bin in the present invention.

[0028] Figure numerals: 1-tank body, 2-slag discharge port, 3-feeding channel, 4-steam drive mechanism, 401-cylinder, 402-inlet pipe, 403-outlet pipe, 404-piston rod, 405-exhaust valve, 406-inlet valve, 407-piston, 408-reset spring, 409-limit switch, 410-block, 5-driving impeller, 6-first hopper, 7-shovel plate, 8-filter screen, 9-slide, 10-platform, 11-second hopper, 12-sealing plate, 13-collecting bin, 14-reactor, 15-feeding pipe, 16-air pipe, 17-casing, 18-impeller shaft, 19-pulley, 20-first belt, 2 1-drum, 22-rotating plate, 23-column, 24-roller, 25-L-type lever, 26-second belt, 27-transmission rod, 28-hollow shaft, 29-self-priming impeller, 30-connecting plate, 31-linkage shaft, 32-first air hole, 33-second air hole, 34-limit seat, 35-driven gear, 36-slide, 37-motor, 38-drive shaft, 39-driving gear, 40-linkage sub-gear, 41-sub-helical gear, 42-driven crank, 43-main helical gear, 44-linkage main gear, 45-driving crank, 46-connecting rod, 47-linkage plate, 48-heat exchange tube, 481-air inlet, 482-liquid outlet. DETAILED DESCRIPTION

[0029] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0030] See also Figures 1 to 11 In an embodiment of the present invention, a pressure oil removal tank comprises a tank body 1, in which an impeller driving mechanism, a waste heat recovery mechanism, a motor driving mechanism and a reactor 14 are sequentially arranged from top to bottom. A steam driving mechanism 4 is arranged on one side of the tank body 1, and the impeller driving mechanism comprises a driving impeller 5, a linkage structure, a swinging structure and a sealing structure. The driving impeller 5, the swinging structure and the sealing structure are connected by a linkage structure, and the swinging structure and the sealing structure are driven to move synchronously by rotating the driving impeller 5. A filtering structure is arranged on the swinging structure, and the filtering structure is used to filter the residue in the waste liquid. The swinging structure can drive the filtering structure to swing periodically, so that the filtering structure vibrates, so as to avoid the residue accumulating on the filtering structure and clogging the filter hole, and at the same time, the residue stuck in the filter hole can be shaken down. A slag discharge port 2 is opened on the side of the inner wall of the tank body 1 corresponding to the filtering structure; The waste heat recovery mechanism is arranged above the reactor 14, and the two are connected by a pipeline. The waste heat recovery mechanism is used to recover the waste heat generated in the reactor 14 and use the waste heat to preheat the filtered waste liquid. The preheated waste liquid can be pressurized and evaporated more quickly. At the same time, the water vapor generated by evaporation in the reactor 14 will be quickly liquefied when entering the waste heat recovery mechanism. The sewage in the waste liquid is treated by evaporation and liquefaction. The sewage is cleaner after treatment, and the water resources in the waste liquid can be reused. The motor drive mechanism includes a stirring structure and an up and down reciprocating motion structure, wherein the stirring structure The structure is arranged inside the reactor 14 and is used to stir the waste liquid in the reactor 14. The up-and-down reciprocating structure is arranged on the top of the reactor 14 and is used to drive the stirring structure to perform up-and-down reciprocating motion in the reactor 14. The steam driving mechanism 4 includes a shoveling structure and a steam heating and pressurizing structure. The shoveling structure is arranged above the filtering structure. The shoveling structure is used to shovel the residue accumulated on the filtering structure and discharge the residue outward from the slag discharge port 2. The steam heating and pressurizing structure is connected to the reactor 14. The steam heating and pressurizing structure heats and pressurizes the interior of the reactor 14 to accelerate the evaporation of the waste liquid. The reactor 14 is provided with a liquid level gauge, a thermometer and a pressure gauge, which are respectively used to monitor the liquid level height, temperature change and pressure size in the reactor 14. The user controls the inflow and outflow of waste liquid, heating evaporation and gas emission and other related process flows according to the monitored values. A discharge pipe is provided at the bottom of the reactor 14, and a valve is installed on the discharge pipe. One end of the discharge pipe passes through the inner wall of the bottom of the tank body 1 and extends to the outside of the tank body 1.

[0031] See also Figures 1 to 3 A feed channel 3 is provided on the top of the tank body 1, and a driving impeller 5 is rotatably connected in the feed channel 3 through an impeller shaft 18. A first hopper 6 is fixed below the tank body 1 corresponding to the feed channel 3, and a platform 10 is fixed below the tank body 1 corresponding to the first hopper 6. A slide 9 is slidably connected to the top of the platform 10. The slide 9 is a frame structure, and a filter screen 8 is fixed above it. An opening is provided on one side of the inner wall of the platform 10 corresponding to the filter screen 8, and the waste liquid filtered by the filter screen 8 flows downward from the provided opening. The filter screen 8, the slide 9 and the platform 10 cooperate to form a filtering structure, and a shovel plate 7 is slidably connected above the filter screen 8; A second hopper 11 is fixed below the corresponding platform 10 inside the tank body 1, and a sealing plate 12 is rotatably connected in the opening at the bottom end of the second hopper 11. A collection bin 13 is fixed below the corresponding second hopper 11 inside the tank body 1. The second hopper 11 is connected to the inside of the collection bin 13, and the two are separated and sealed by the sealing plate 12. The sealing plate 12 forms a sealing structure between the second hopper 11 and the collection bin 13. The collection bin 13 is arranged above the reactor 14, and the two are connected by a material guide pipe 15, and a valve is installed on the material guide pipe 15. A plurality of air guide pipes 16 are fixed to the top of the reactor 14, and the top ends of the plurality of air guide pipes 16 are all inserted into the collection bin 13.

[0032] See also Figures 4 to 7 , columns 23 and rollers 24 are respectively provided on both sides of the rear end of the top of the slide 9, wherein the columns 23 are fixedly connected to the slide 9, and the rollers 24 are rotatably connected to the slide 9 through the bracket, and a rotating plate 22 is rotatably connected to the upper side of the corresponding columns 23 and rollers 24 inside the tank body 1 through a transmission rod 27, and both ends of the rotating plate 22 are rotatably connected to rollers 21, and the rollers 21 at both ends of the rotating plate 22 are arranged corresponding to the columns 23. When the rotating plate 22 rotates, the cylinder body of the roller 21 will resist the columns 23. After the columns 23 are subjected to force, the slide 9 will slide to one side on the upper side of the platform 10. The roller 21 at one end of the rotating plate 22 cooperates with the columns 23, which can drive the slide 9 to slide to one side on the platform 10; An L-shaped lever 25 is rotatably connected to one side of the rotating plate 22 inside the tank body 1, and the L-shaped lever 25 is arranged above the roller 24, the long end of the L-shaped lever 25 abuts against one side of the roller 24, and the short end of the L-shaped lever 25 is arranged just below the roller 21 at one end of the rotating plate 22. When the rotating plate 22 rotates, the roller 21 will rotate synchronously and press down the L-shaped lever 25, so that the L-shaped lever 25 rotates around its own rotating axis. When the L-shaped lever 25 rotates, its long end will abut against the roller 24. After the roller 24 is subjected to force, it will drive the slide The frame 9 slides to the other side on the upper side of the platform 10, and the roller 21 at one end of the rotating plate 22 cooperates with the short end of the L-shaped lever 25, which can drive the L-shaped lever 25 to rotate around its own rotation axis. The long end of the L-shaped lever 25 cooperates with the roller 24, which can drive the slide 9 to slide to the other side on the platform 10. The rotating plate 22, the L-shaped lever 25, the column 23 and the roller 24 cooperate to form a swing structure, which is used to drive the slide 9 to swing back and forth on the platform 10, thereby driving the filter 8 to swing synchronously and produce a vibration effect; One end of the impeller shaft 18 rotates to penetrate the inner wall of the feed channel 3 and extends to the rear of the feed channel 3, one end of the transmission rod 27 rotates to penetrate the inner wall of the tank body 1 and extends to the rear of the tank body 1, one end of the sealing plate 12 shaft rotates to penetrate the inner wall of the tank body 1 and extends to the rear of the tank body 1, one end of the impeller shaft 18, one end of the transmission rod 27, and one end of the sealing plate 12 shaft are all fixed with a pulley 19, wherein the impeller shaft 18 and the two pulleys 19 on the transmission rod 27 are connected by a first belt 20, and the transmission rod 27 and the two pulleys 19 on the sealing plate 12 shaft are connected by a second belt 26. The pulley 19, the first belt 20 and the second belt 26 cooperate to form a linkage structure. When the driving impeller 5 rotates under the impact of the waste liquid, the linkage structure can drive the swing structure and the sealing structure to move synchronously, so that the filter 8 produces periodic vibration, and the residue on the filter 8 is shaken and dispersed to prevent the residue from accumulating and affecting the filtering effect. At the same time, the sealing plate 12 can periodically open and close the channel between the second hopper 11 and the collection bin 13, so that the filtered waste liquid intermittently enters the collection bin 13, reducing the storage pressure of the collection bin 13 and avoiding too much waste liquid flowing into the collection bin 13 at one time to affect the waste heat recovery effect.

[0033] See also Figures 8-9 The motor drive mechanism includes a housing 17, a hollow shaft 28 and a linkage shaft 31. The housing 17 is fixed to the top of the reactor 14. The linkage shaft 31 is arranged in the housing 17, and one end of the linkage shaft 31 movably penetrates the housing 17 and the inner wall of the reactor 14 and extends to the inside of the reactor 14. A limited seat 34 is arranged between the linkage shaft 31 and the reactor 14. One end of the linkage shaft 31 is movably inserted into the limited seat 34. The bottom end of the linkage shaft 31 is connected and fixed to the hollow shaft 28 through a connecting disk 30. A cavity is arranged inside the connecting disk 30. The hollow shaft 28 is connected to the inside of the connecting disk 30. A plurality of A plurality of first air holes 32 are provided on the inner wall of the self-priming impeller 29 and the connecting disk 30, and a plurality of second air holes 33 are provided on each of the plurality of self-priming impellers 29. The first air holes 32 and the second air holes 33 are connected through the hollow shaft 28 and the cavity inside the connecting disk 30. When the hollow shaft 28 rotates, the air pressure outside the shaft body is greater than the air pressure inside the shaft body, and the external air will enter the inside of the connecting disk 30 along the first air holes 32 on the surface of the connecting disk 30, and then the air will flow along the channel inside the hollow shaft 28 and be discharged from the second air holes 33, so as to accelerate the mixing of high-temperature and high-pressure steam and waste liquid and accelerate the evaporation of waste liquid; A slide cylinder 36 is slidably sleeved on one end of the linkage shaft 31, and a driven gear 35 is sleeved and fixed on the outside of the slide cylinder 36. The driven gear 35 is rotatably connected to the casing 17 through a bracket. A driving shaft 38 is rotatably connected to one side of the casing 17 corresponding to the linkage shaft 31. A driving gear 39 is fixed on one end of the driving shaft 38. The driving gear 39 meshes with the driven gear 35 for transmission. A motor 37 is installed on one side of the casing 17 corresponding to the driving shaft 38. One end of the output shaft of the motor 37 is connected and fixed to one end of the driving shaft 38. The driving shaft 38 is rotated by the motor 37, and the slide cylinder 36 is driven to rotate through the cooperation of the driving gear 39 and the driven gear 35. When the slide cylinder 36 rotates, the linkage shaft 31 inside it will be driven to rotate synchronously, thereby driving the hollow shaft 28 to rotate and stir the waste liquid. The hollow shaft 28, a plurality of self-priming impellers 29, the linkage shaft 31 and the driving shaft 38, and the corresponding gear transmission structure are used in combination to form a stirring structure for stirring and mixing the waste liquid with high-temperature and high-pressure steam. A secondary helical gear 41 is sleeved and fixed to the lower end of the driven gear 35 corresponding to the linkage shaft 31, and a linkage secondary gear 40 is meshed and connected to one side of the secondary helical gear 41. The linkage secondary gear 40 is rotatably connected to the casing 17 through a bracket, and a driven crank 42 is coaxially fixed to the linkage secondary gear 40. A main helical gear 43 is sleeved and fixed to the lower end of the driving gear 39 corresponding to the driving shaft 38, and a linkage main gear 44 is meshed and connected to one side of the main helical gear 43. The linkage main gear 44 is rotatably connected to the casing 17 through a bracket, and a driving crank 45 is coaxially fixed to the linkage main gear 44. One end of the driving crank 45 and one end of the driven crank 42 are both rotatably connected to connecting rods 46, one end of the two connecting rods 46 are both extended outwards and the outer ends of the two connecting rods 46 are located in the same plane, a linkage plate 47 is provided between the outer ends of the two connecting rods 46, and the outer ends of the two connecting rods 46 are both rotatably connected to the linkage plate 47; When the driving shaft 38 rotates, it will drive the linkage main gear 44 meshing with the main helical gear 43 to rotate synchronously. When the linkage main gear 44 rotates, it will drive the driving crank 45 to rotate synchronously. The driving crank 45 is connected to the driven crank 42 through the linkage plate 47 and the connecting rod 46. When the driving crank 45 rotates, the driven crank 42 will rotate synchronously, thereby driving the linkage sub-gear 40 to rotate synchronously. The linkage sub-gear 40 is meshed with the sub-helical gear 41 for transmission. The sub-helical gear 41 is sleeved and fixed on the linkage shaft 31. In a natural state, when the linkage sub-gear 40 drives the sub-helical gear 41 to rotate, it will drive the linkage shaft 31 to rotate synchronously. However, at this time, the linkage shaft 31 has been limited by the slide cylinder 36 and can only perform up and down reciprocating motion. The original rotation motion is changed into up and down sliding motion through the transmission structure similar to the worm gear. The linkage sub-gear 40, the sub-helical gear 41, the driven crank 42, the main helical gear 43, the linkage main gear 44, the driving crank 45, the connecting rod 46 and the linkage plate 47 cooperate to form an up and down reciprocating motion structure, which is used to drive the stirring structure to reciprocate up and down inside the reactor 14, accelerate the mixing and stirring of the waste liquid, and improve the mixing efficiency.

[0034] See also Fig.10 The steam drive mechanism 4 includes a cylinder 401, a piston 407 is slidably connected inside the cylinder 401, a piston rod 404 is fixed to one end of the piston 407, one end of the piston rod 404 slides through the inner wall of the cylinder 401 and the inner wall of the tank body 1 and extends to the inside of the tank body 1, one end of the piston rod 404 is fixed to one side of the scraping plate 7, and the cylinder 401, the piston 407, the piston rod 404 and the scraping plate 7 cooperate to form a scraping structure for scraping off the residue accumulated on the filter screen 8 and discharging the residue from the slag discharge port 2; A return spring 408 is sleeved on the rod body of the piston rod 404, and the two ends of the return spring 408 are respectively connected and fixed to the piston 407 and the inner wall of one side of the cylinder 401. The two ends inside the cylinder 401 are provided with a limit switch 409 and a stopper 410. The limit switch 409 and the stopper 410 on the same side are arranged opposite to each other up and down. The upper and lower ends of one side of the cylinder body of the cylinder 401 are respectively fixed with an inlet pipe 402 and an outlet pipe 403. The inlet pipe 402 is installed with an inlet valve 406, and the outlet pipe 403 is installed with an exhaust valve 405. One end of the outlet pipe 403 is inserted into the reactor 14, and one end of the inlet pipe 402 is connected to high-temperature and high-pressure steam. The cylinder 401, the outlet pipe 403, the piston 407 and the reactor 14 cooperate to form a steam heating and pressurizing structure. High-temperature and high-pressure steam is pumped into the cylinder 401 through the air inlet pipe 402. Under the impetus of the steam pressure, the piston 407 moves toward the right, driving the piston rod 404 and the shovel plate 7 to move to the right synchronously and shovel out the residue. When the piston 407 reaches the right stopper 410, it stops moving and synchronously triggers the limit switch 409 on the right. After the limit switch 409 is triggered, the exhaust valve 405 is controlled to open and the air inlet valve 406 is controlled to close, so that the high-temperature and high-pressure steam in the cylinder 401 is discharged from the air outlet pipe 403 and guided into the reactor 14, and the waste liquid in the reactor 14 is pressurized and heated. As the steam in the cylinder 401 gradually decreases, the piston 407 is reset on the return spring 408. Under the action of , it gradually resets until one side of the piston 407 abuts against the left stopper 410 and the limit switch 409. After the left limit switch 409 is triggered, the exhaust valve 405 is controlled to close and the intake valve 406 is controlled to open synchronously, and high-temperature and high-pressure steam is pumped into the cylinder 401 again to push the shovel plate 7 again to shovel out the residue. By repeating the above operation, the residue on the filter screen 8 can be continuously cleaned to keep the filter screen clean, and high-temperature and high-pressure steam can be intermittently injected into the reactor 14, which is beneficial to the mixing of steam and waste liquid and avoids excessive pressure in the reactor 14 affecting the oil-water separation effect. The whole process is driven by steam, without manual intervention, and has a good use effect.

[0035] See also Fig.11 A heat exchange tube 48 is provided in the material collecting bin 13, an air inlet end 481 of the heat exchange tube 48 is connected and fixed to the air guide pipe 16, a liquid outlet end 482 of the heat exchange tube 48 penetrates the inner wall of the material collecting bin 13 and the inner wall of the tank body 1 and extends to the outside of the tank body 1, the waste liquid in the reactor 14 generates steam under high temperature and high pressure, the steam enters the heat exchange tube 48 along the air guide pipe 16, the tube wall of the heat exchange tube 48 exchanges heat with the waste liquid stored in the material collecting bin 13, preheats the waste liquid, and at the same time the steam is liquefied into water droplets and discharged from the liquid outlet end 482, the material collecting bin 13 cooperates with the heat exchange tube 48 in the bin to form a waste heat recovery mechanism.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pressure oil removal tank, comprising a tank body (1), characterized in that: The tank body (1) is provided with an impeller drive mechanism, a waste heat recovery mechanism, a motor drive mechanism and a reaction kettle (14) in order from top to bottom; a steam drive mechanism (4) is provided on one side of the tank body (1); the impeller drive mechanism comprises a drive impeller (5), a linkage structure, a swing structure and a sealing structure; the drive impeller (5), the swing structure and the sealing structure are connected via the linkage structure; a filter structure is provided on the swing structure; and a slag discharge port (2) is provided on a side of the inner wall of the tank body (1) corresponding to the filter structure; The waste heat recovery mechanism is arranged above the reaction kettle (14), and the two are connected by a pipeline. The waste heat recovery mechanism is used to recover the waste heat generated in the reaction kettle (14) and use the waste heat to preheat the filtered waste liquid, and the waste heat recovery mechanism is also used to accelerate steam liquefaction; The motor drive mechanism comprises a stirring structure and an up-and-down reciprocating motion structure, wherein the stirring structure is arranged inside the reaction kettle (14) and is used to stir the waste liquid in the reaction kettle (14), and the up-and-down reciprocating motion structure is arranged at the top of the reaction kettle (14) and is used to drive the stirring structure to perform up-and-down reciprocating motion in the reaction kettle (14); The steam driving mechanism (4) comprises a shoveling structure and a steam heating and pressurizing structure. The shoveling structure is arranged above the filtering structure and is used to shovel away the residue accumulated on the filtering structure and discharge the residue outward from the residue discharge port (2). The steam heating and pressurizing structure is connected to the reactor (14) and is used to heat and pressurize the waste liquid in the reactor (14).

2. The pressure oil removal tank according to claim 1, characterized in that: A feed channel (3) is provided at the top of the tank body (1), and the driving impeller (5) is rotatably connected to the feed channel (3) via an impeller shaft (18). A first hopper (6) is fixed inside the tank body (1) below the feed channel (3), and a platform (10) is fixed inside the tank body (1) below the first hopper (6). A slide frame (9) is slidably connected to the top of the platform (10). The slide frame (9) is a frame structure, and a filter screen (8) is fixed above the slide frame. An opening is provided on the inner wall of the platform (10) at one side corresponding to the filter screen (8), and waste liquid filtered by the filter screen (8) flows downward from the provided opening. The filter screen (8), the slide frame (9) and the platform (10) cooperate to form the filtering structure, and a shovel plate (7) is slidably connected to the top of the filter screen (8).

3. The pressure oil removal tank according to claim 2, characterized in that: A column (23) and a roller (24) are respectively arranged on both sides of the rear end of the top of the slide (9); the column (23) is fixedly connected to the slide (9); the roller (24) is rotatably connected to the slide (9) through a bracket; a rotating plate (22) is rotatably connected to the upper side of the tank body (1) corresponding to the column (23) and the roller (24) through a transmission rod (27); both ends of the rotating plate (22) are rotatably connected to rollers (21); the rollers (21) at both ends of the rotating plate (22) are arranged corresponding to the column (23); the tank body (1) is rotatably connected to the upper side of the tank body (1) corresponding to the column (23) and the roller (24); An L-shaped lever (25) is rotatably connected to one side of the rotating plate (22), and the L-shaped lever (25) is arranged above the roller (24). The long end of the L-shaped lever (25) abuts against one side of the roller (24), and the short end of the L-shaped lever (25) is arranged directly below the roller (21) at one end of the rotating plate (22). The rotating plate (22), the L-shaped lever (25), the column (23) and the roller (24) cooperate to form the swing structure, which is used to drive the slide (9) to swing back and forth on the platform (10).

4. The pressure oil removal tank according to claim 3, characterized in that: A second hopper (11) is fixed inside the tank body (1) at a position corresponding to the lower part of the platform (10); a sealing plate (12) is rotatably connected to an opening at the bottom end of the second hopper (11); a material collection bin (13) is fixed inside the tank body (1) at a position corresponding to the lower part of the second hopper (11); the second hopper (11) is connected to the inside of the material collection bin (13), and the two are separated and sealed by the sealing plate (12); the sealing plate (12) forms the sealing structure between the second hopper (11) and the material collection bin (13).

5. The pressure oil removal tank according to claim 4, characterized in that: One end of the impeller shaft (18) rotates through the inner wall of the feed channel (3) and extends to the rear of the feed channel (3); one end of the transmission rod (27) rotates through the inner wall of the tank body (1) and extends to the rear of the tank body (1); one end of the sealing plate (12) shaft rotates through the inner wall of the tank body (1) and extends to the rear of the tank body (1); one end of the impeller shaft (18), one end of the transmission rod (27), and one end of the sealing plate (12) shaft are all fixed with a pulley (19); The wheel shaft (18) and the two pulleys (19) on the transmission rod (27) are connected to each other via a first belt (20), and the transmission rod (27) and the two pulleys (19) on the rotating shaft of the sealing plate (12) are connected to each other via a second belt (26). The three pulleys (19), the first belt (20) and the second belt (26) cooperate to form the linkage structure, and the driving impeller (5) drives the swing structure and the sealing structure to move synchronously via the linkage structure.

6. The pressure oil removal tank according to claim 5, characterized in that: The material collection bin (13) is arranged above the reactor (14), and the two are connected via a material guide pipe (15). A valve is installed on the material guide pipe (15). A plurality of air guide pipes (16) are fixed on the top of the reactor (14). A heat exchange pipe (48) is arranged in the material collection bin (13). The air inlet end (481) of the heat exchange pipe (48) is connected and fixed to the air guide pipe (16). The liquid outlet end (482) of the heat exchange pipe (48) passes through the inner wall of the material collection bin (13), the inner wall of the tank body (1) and extends to the outside of the tank body (1). The material collection bin (13) cooperates with the heat exchange pipe (48) inside it to form the waste heat recovery mechanism.

7. The pressure oil removal tank according to claim 6, characterized in that: The motor drive mechanism comprises a housing (17), a hollow shaft (28) and a linkage shaft (31); the housing (17) is fixed to the top of the reactor (14); the linkage shaft (31) is arranged in the housing (17); one end of the linkage shaft (31) movably penetrates the housing (17) and the inner wall of the reactor (14) and extends into the interior of the reactor (14); a limit seat (34) is arranged between the linkage shaft (31) and the reactor (14); one end of the linkage shaft (31) movably inserts into the limit seat (34); and the linkage shaft (31) is arranged in a movable manner. The bottom end of the connecting disk (30) is connected and fixed to the hollow shaft (28) via a connecting disk (30); a cavity is provided inside the connecting disk (30); the hollow shaft (28) is communicated with the inside of the connecting disk (30); a plurality of self-priming impellers (29) are fixed on the hollow shaft (28); a plurality of first air holes (32) are provided on the inner wall of the connecting disk (30); a plurality of second air holes (33) are provided on each of the plurality of self-priming impellers (29); the first air holes (32) and the second air holes (33) are communicated with each other via the cavity inside the hollow shaft (28) and the connecting disk (30).

8. The pressure oil removal tank according to claim 7, characterized in that: A slide cylinder (36) is slidably sleeved on one end of the linkage shaft (31), a driven gear (35) is sleeved and fixed on the outside of the slide cylinder (36), the driven gear (35) is rotatably connected to the casing (17) via a bracket, a drive shaft (38) is rotatably connected to a side of the casing (17) corresponding to the linkage shaft (31), one end of the drive shaft (38) is fixed with a driving gear (39), the driving gear (39) is meshed with the driven gear (35) for transmission, a motor (37) is installed on a side of the casing (17) corresponding to the drive shaft (38), one end of the output shaft of the motor (37) is connected and fixed to one end of the drive shaft (38), the hollow shaft (28), the plurality of self-priming impellers (29), the linkage shaft (31), the drive shaft (38), and corresponding gear transmission structures are used in combination to form the stirring structure for stirring and mixing waste liquid with high-temperature and high-pressure steam.

9. The pressure oil removal tank according to claim 8, characterized in that: A secondary helical gear (41) is sleeved and fixed to the lower end of the linkage shaft (31) corresponding to the driven gear (35); one side of the secondary helical gear (41) is meshedly connected to a linkage secondary gear (40); the linkage secondary gear (40) is rotatably connected to the housing (17) via a bracket; a driven crank (42) is coaxially fixed to the linkage secondary gear (40); a main helical gear (43) is sleeved and fixed to the lower end of the drive shaft (38) corresponding to the driving gear (39); one side of the main helical gear (43) is meshedly connected to a linkage main gear (44); the linkage main gear (44) is rotatably connected to the housing (17) via a bracket; a driving crank (45) is coaxially fixed to the linkage main gear (44); one side of the driving crank (45) is coaxially fixed to the linkage main gear (44); The ends of the two connecting rods (46) and one end of the driven crank (42) are both rotatably connected to a connecting rod (46); one ends of the two connecting rods (46) extend outwards and the extended ends of the two connecting rods (46) are located in the same plane; a linkage plate (47) is provided between the extended ends of the two connecting rods (46), and the extended ends of the two connecting rods (46) are both rotatably connected to the linkage plate (47); the linkage secondary gear (40), the secondary helical gear (41), the driven crank (42), the main helical gear (43), the linkage main gear (44), the driving crank (45), the connecting rod (46) and the linkage plate (47) cooperate to form the up-and-down reciprocating motion structure, which is used to drive the stirring structure to perform up-and-down reciprocating motion inside the reactor (14).

10. The pressure oil removal tank according to claim 2, characterized in that: The steam drive mechanism (4) comprises a cylinder (401), the interior of the cylinder (401) is slidably connected to a piston (407), one end of the piston (407) is fixed to a piston rod (404), one end of the piston rod (404) slides through the inner wall of the cylinder (401) and the inner wall of the tank body (1) and extends to the interior of the tank body (1), one end of the piston rod (404) is fixed to one side of the scraping plate (7), and the cylinder (401), the piston (407), the piston rod (404) and the scraping plate (7) cooperate to form the scraping structure; A return spring (408) is sleeved on the rod body of the piston rod (404), and the two ends of the return spring (408) are respectively connected and fixed to the piston (407) and the inner wall of one side of the cylinder (401). The two ends of the cylinder (401) are provided with a limit switch (409) and a stopper (410). The limit switch (409) and the stopper (410) on the same side are arranged opposite to each other up and down. The upper and lower ends of one side of the cylinder body of the cylinder (401) are respectively fixed with an intake pipe (402) and an outlet pipe (403), the inlet pipe (402) is provided with an inlet valve (406), the outlet pipe (403) is provided with an exhaust valve (405), one end of the outlet pipe (403) is inserted into the reactor (14), one end of the inlet pipe (402) is connected to high-temperature and high-pressure steam, and the cylinder (401), the outlet pipe (403), the piston (407) and the reactor (14) cooperate to form the steam heating and pressurizing structure.

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