Petroleum drilling waste mud treatment device

Abstract

The invention discloses a petroleum drilling waste mud treatment device, and relates to the technical field of waste mud treatment, the petroleum drilling waste mud treatment device comprises a support plate, a solid-liquid separation assembly is arranged at the top of the support plate close to the center, and an extraction assembly is arranged at the top of the support plate; according to the petroleum drilling waste mud treatment device, when dewatered mud blocks enter one side of the interior of the separation bin, the separation bin on the side is heated, vacuumized and stirred back and forth, under the vacuum condition, the air pressure is reduced, the boiling point of mercury is also reduced, heating of the mud blocks can not only promote evaporation of water, but also enable the mercury to volatilize in a steam form, and therefore the effect of treating the mud blocks is achieved. And a large amount of mercury steam is released into the separation bin, so that the gas partial pressure in the separation bin on the side is increased, the gas partial pressure is detected through the pressure sensor on the side, and at the moment, gasified mercury and part of water steam can be pumped out of the separation bin, so that the removal of mercury in the slurry is completed.

Description

Technical Field

[0001] The invention relates to the technical field of waste mud treatment, in particular to a device for treating waste mud from oil drilling. Background Art

[0002] my country is short of oil resources. In order to reduce its external dependence on oil, natural gas and other resources, the country has carried out deep-earth engineering and achieved breakthroughs in deep oil and gas exploration, making deep oil and gas a new field for energy discovery. The depth of oil and gas drilling has been constantly refreshed, and more and more wells have been drilled to the Cambrian and even Sinian systems. At the same time, more than 85% of my country's mercury resources are distributed in oil and gas resource-rich areas such as the southwest and northwest, of which more than 80% are in the Cambrian carbonate strata.

[0003] The generation of waste mud is a natural and inevitable result in the oil and gas drilling process. During the drilling process, the drill bit will break the rock when penetrating the formation, producing a large amount of rock cuttings and mud. These solid particles will mix into the drilling fluid to form waste mud. The waste mud treatment device helps reduce the impact of the drilling industry on the environment through effective solid-liquid separation and purification processes, while improving resource utilization efficiency. It is an important part of achieving sustainable drilling. Correct mud treatment can not only reduce waste, but also reduce costs and protect the environment.

[0004] Currently, in the process of oil and gas extraction, hydraulic fracturing is often used to crack underground rocks by injecting liquid at high pressure to promote the flow of oil and natural gas. This process easily disturbs mercury-containing formations and activates the mercury in the formation, causing the mercury to be released from the rock into the formation water and then released into the drilling mud. Most of the existing drilling waste mud treatment devices directly use centrifuges to generate strong centrifugal force through high-speed rotation to achieve separation between mud and water, and do not treat the heavy metal mercury in the soil. Since mercury is a toxic heavy metal, it has great environmental hazards and health risks, which makes the separated mud blocks unable to be recycled normally, resulting in a waste of resources.

[0005] Therefore, we propose a petroleum drilling waste mud treatment device to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a device for treating waste mud from oil drilling, so as to solve the problem in the above background technology that waste mud from oil drilling contains a large amount of mercury and cannot be properly recovered, resulting in waste of resources.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil drilling waste mud treatment device, comprising a support plate, a solid-liquid separation component is arranged near the center of the top of the support plate, an extraction component is arranged on the top of the support plate, the extraction component comprises a separation chamber, two heating wires are arranged on the outer surface of the separation chamber, a partition plate is fixedly installed near the center of the inner wall of the separation chamber, the opposite inner walls of the partition plate are rotatably connected with auger blades, the inner wall of the separation chamber is fixed with air outlet plates near both ends, the inner walls of the two auger blades are provided with two card slots, A forward and reverse motor is arranged on the top of the support plate, and the output shaft of the forward and reverse motor is fixedly connected with a rotating shaft. Two limit grooves are provided on the outer surface of the rotating shaft. An electromagnet is fixedly sleeved near both ends of the outer surface of the rotating shaft. The interiors of the two clamping grooves are slidably connected with limit plates. A plurality of springs are arranged on the outer surfaces of the two limit plates. The plurality of springs are divided into two groups, and a clamping rod is fixedly connected between one end of each group of springs. A sealing ring is arranged on the outer surface of the rotating shaft near one end. A vacuum pump is arranged on the top of the support plate, and the inlet and outlet ends of the vacuum pump are fixedly connected with an air inlet pipe.

[0008] Preferably, one end of the air inlet pipe is fixedly connected to a drainage pipe, two first solenoid valves are arranged on the outer surface of the drainage pipe, pressure sensors are arranged on the outer surface of the separation bin near both ends, and second solenoid valves are arranged on the outer surfaces of the two mud outlet pipes of the separation bin.

[0009] Preferably, the top of the separation bin is fixedly connected to the top of the support plate, one end of the two auger blades respectively moves through the relative inner wall of the separation bin to the inside, one end of the two auger blades respectively moves through the outside of the two air outlet plates, the two ends of the rotating shaft respectively moves through the opposite outsides of the separation bin, and the two ends of the rotating shaft respectively moves through the opposite outsides of the two auger blades.

[0010] Preferably, the outer surfaces of the two electromagnets respectively penetrate into the interior of the two limit grooves, one end of the two groups of springs are respectively fixedly connected to the outer surfaces of the two limit plates, the outer surfaces of the two clamping rods respectively movably penetrate into the outside of the two limit grooves, the outer surfaces of the two clamping rods respectively slide with the inside of the four clamping grooves, and both ends of the drainage tube are fixedly penetrated into the interior of the separation bin.

[0011] Preferably, a liquefaction component is arranged on the top of the support plate near the front surface, and the liquefaction component includes a low temperature box, the bottom of the low temperature box is fixedly connected to the top of the support plate, and a semiconductor refrigeration sheet is arranged on the inner wall of the low temperature box.

[0012] Preferably, the output end of the vacuum pump is fixedly connected to an air outlet pipe, the two ends of the air outlet pipe are respectively fixed to pass through the opposite outsides of the low-temperature box, and a collection box is fixedly installed on the top of the support plate by screws, and the bottom end of the air outlet pipe is fixed to pass through the interior of the collection box.

[0013] Preferably, a diversion assembly is arranged on the top of the separation bin, and the diversion assembly includes a discharge pipe, the bottom end of the discharge pipe is fixedly connected to a first diversion pipe, the outer surface of the discharge pipe is fixedly connected to a second diversion pipe, and an electric push rod is arranged on the outer surface of the first diversion pipe.

[0014] Preferably, a push block is fixedly installed on the top of the electric push rod, and a sealing block is fixedly connected to the outer surface of the push block. The outer surface of the sealing block is slidably connected to the inner wall of the first shunt tube, and the outer surface of the sealing block is slidably connected to the inner wall of the second shunt tube, and the bottom ends of the first shunt tube and the second shunt tube are fixedly penetrated into the interior of the separation bin.

[0015] Preferably, the solid-liquid separation component includes a vibrating screen body, a support frame is fixed to the outer surface of the vibrating screen body, the bottom of the support frame is fixedly connected to the top of the support plate, a discharge hopper is fixedly installed between the relative inner walls of the support frame, the top of the support plate is fixedly connected to a fixing frame, and a driving motor is arranged on the top of the fixing frame.

[0016] Preferably, a centrifuge is fixedly installed near the center of the top of the fixed frame, the bottom of the discharge hopper is fixedly penetrated into the interior of the centrifuge, the output end of the drive motor is fixedly connected to a rotor, the two ends of the rotor are movably penetrated to the opposite outsides of the centrifuge, the bottom of the centrifuge is fixedly connected to a liquid outlet pipe, and the top end of the discharge pipe is fixedly penetrated into the interior of the centrifuge.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when the dehydrated mud enters one side of the separation bin, the separation bin on this side is heated, vacuumized and stirred back and forth. Under vacuum conditions, the air pressure is reduced, and the boiling point of mercury is also reduced. Heating the mud can not only promote the evaporation of water, but also make the mercury volatilize in the form of steam, and release a large amount of mercury vapor into the separation bin, which will cause the gas partial pressure inside the separation bin on this side to increase, and then be detected by the pressure sensor on this side. At this time, the gasified mercury and part of the water vapor can be extracted from the separation bin, that is, the removal of mercury in the mud is completed, which solves the problem in the prior art that the waste mud in oil drilling contains a large amount of mercury and cannot be normally recovered, resulting in waste of resources; 2. In the present invention, during the oil drilling process, when the waste mud extracted during the mining process needs to be processed, the rock debris in the mud is first separated by the vibrating screen body, and then the mud and water are separated by the centrifuge. The separated mud flows outward through the discharge pipe. Through the action of the solid-liquid separation component, the mud blocks and water in the waste mud of oil drilling are separated, which is convenient for further extraction of mercury in the mud at a later stage; 3. In the present invention, after the mud enters the discharge pipe, the electric push rod is started to drive the sealing block to move up and down, thereby opening or closing the first shunt pipe and the second shunt pipe respectively, so as to realize the switching sealing and dredging of the first shunt pipe and the second shunt pipe, and it is not necessary to respectively set a switch valve for the first shunt pipe and the second shunt pipe, thereby saving resources; 4. In the present invention, after the mud blocks on one side of the partition plate are processed, the two clamping rods are moved to the inside of another auger blade, so that the two clamping rods are respectively embedded in the two clamping grooves in the other auger blade, thereby realizing the connection between the rotating shaft and one auger blade, and then the forward and reverse motors are started again to drive the auger blade to rotate, heat and stir the mud blocks on the other side of the separation bin, and switch between the mud block transportation and mercury separation processing by dividing the separation bin into two parts, thereby further improving the working efficiency of mercury separation in the mud; 5. In the present invention, after the vaporized mercury enters the low-temperature box, the temperature inside the low-temperature box is lowered by a semiconductor refrigeration sheet, so that the vaporized mercury vapor and water vapor in the exhaust pipe are pre-cooled and liquefied and enter the interior of the collection box for collection. Since the density of mercury is different from that of water, stratification will occur when the two are transported to the collection box separately, thereby realizing the collection of mercury liquid and preventing it from flowing into the air to pollute the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a front perspective view of a device for treating waste mud from oil drilling.

[0019] Figure 2 It is a partial stereoscopic view of a solid-liquid separation component of a petroleum drilling waste mud processing device of the present invention.

[0020] Figure 3 The present invention is a partially cutaway stereoscopic view of a diversion component of a device for treating waste mud from oil drilling.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 It is a partial stereoscopic diagram of an extraction component of a device for treating waste mud from oil drilling according to the present invention.

[0023] Figure 6 The present invention is a partially cutaway stereoscopic view of a separation chamber of a device for treating waste mud from oil drilling.

[0024] Figure 7 The present invention is a partially cutaway stereoscopic view of an auger blade of a device for treating waste mud from oil drilling.

[0025] Figure 8 The present invention is a perspective view of a cross-section of a rotating shaft portion of a device for treating waste mud from oil drilling.

[0026] Fig. 9 The present invention is a three-dimensional diagram of a liquefaction component of a device for treating waste mud from oil drilling.

[0027] In the figure: 1, support plate; 2, solid-liquid separation component; 201, vibrating screen body; 202, support frame; 203, discharge hopper; 204, fixed frame; 205, drive motor; 206, centrifuge; 207, rotor; 208, liquid outlet pipe; 3, diversion component; 301, discharge pipe; 302, first diversion pipe; 303, second diversion pipe; 304, electric push rod; 305, push block; 306, sealing block; 4, extraction component; 401, separation chamber; 402, heating wire; 403, partition plate; 404, Auger blade; 405, air outlet plate; 406, card slot; 407, forward and reverse motor; 408, rotating shaft; 409, limit slot; 410, electromagnet; 411, limit plate; 412, spring; 413, card rod; 414, sealing ring; 415, vacuum pump; 416, air inlet pipe; 417, drainage pipe; 418, first solenoid valve; 419, pressure sensor; 420, second solenoid valve; 5, liquefaction component; 501, low temperature box; 502, semiconductor refrigeration plate; 503, air outlet pipe; 504, collection box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-4The present invention provides a technical solution: a device for treating waste mud from oil drilling, a diversion component 3 is arranged on the top of a separation bin 401, the diversion component 3 includes a discharge pipe 301, the bottom end of the discharge pipe 301 is fixedly connected with a first diversion pipe 302, the outer surface of the discharge pipe 301 is fixedly connected with a second diversion pipe 303, an electric push rod 304 is arranged on the outer surface of the first diversion pipe 302, a push block 305 is fixedly installed on the top of the electric push rod 304, a sealing block 306 is fixedly connected to the outer surface of the push block 305, the outer surface of the sealing block 306 is slidably connected to the inner wall of the first diversion pipe 302, the outer surface of the sealing block 306 is slidably connected to the inner wall of the second diversion pipe 303, the bottom ends of the first diversion pipe 302 and the second diversion pipe 303 are fixedly penetrated into the interior of the separation bin 401, and a solid-liquid separation component 2 comprises a vibrating screen body 201, a support frame 202 is fixed on the outer surface of the vibrating screen body 201, the bottom of the support frame 202 is fixedly connected to the top of the support plate 1, a discharge hopper 203 is fixedly installed between the opposite inner walls of the support frame 202, a fixing frame 204 is fixedly connected to the top of the support plate 1, a driving motor 205 is arranged on the top of the fixing frame 204, a centrifuge 206 is fixedly installed near the center of the top of the fixing frame 204, the bottom of the discharge hopper 203 is fixedly penetrated into the inside of the centrifuge 206, the output end of the driving motor 205 is fixedly connected to the rotor 207, the two ends of the rotor 207 are respectively movably penetrated to the opposite outside of the centrifuge 206, the bottom of the centrifuge 206 is fixedly connected to the liquid discharge pipe 208, and the top end of the discharge pipe 301 is fixedly penetrated into the inside of the centrifuge 206.

[0030] In this embodiment, during the oil drilling process, when the waste mud extracted during the mining process needs to be processed, the waste mud is first transported to the top of the filter in the vibrating screen body 201 through external handling equipment, and then the vibrating screen body 201 is started to separate the rock fragments in the mud. The working principle of the vibrating screen body 201 is as follows: the vibrating screen body 201 uses vibration to separate the rock blocks in the mud from the water and the mud. After the vibrating screen body 201 is started, the screen generates rapid vibration up and down or left and right. This movement causes the mud to continuously move on the screen surface. Rocks are not allowed to pass through the screen due to their size and will be retained on the screen surface and continue to move, gradually moving toward the screen outlet, thereby separating the rock blocks in the mud. The separated mud enters the interior of the centrifuge 206 through the discharge hopper 203, and the drive motor 205 is started to drive the rotor 207 to rotate, driving the mud to perform centrifugal motion inside the centrifuge 206. Due to the different densities of the mud and water in the mud, the mud and water are separated. After the mud enters the interior of the centrifuge 206, the mud is injected into the centrifuge 206. The driving motor 205 is started in the rotating barrel, and the rotation in the barrel generates a strong centrifugal force. Due to the centrifugal force, the solid mud is pushed to the inner wall of the centrifuge 206. As the solid particles settle, the water is retained in the center. Due to its relatively small density, solid-liquid separation is achieved. The separated water flows out through the liquid outlet pipe 208 and is collected by an external collection device. The separated mud flows out through the discharge pipe 301. Through the action of the solid-liquid separation component 2, the mud and water in the oil drilling waste mud are separated, which is convenient for further extraction of mercury in the mud at a later time.

[0031] like Figure 1 and Figure 3-Figure 8As shown, a device for treating waste mud from oil drilling comprises a support plate 1, a solid-liquid separation component 2 is arranged near the center of the top of the support plate 1, an extraction component 4 is arranged on the top of the support plate 1, the extraction component 4 comprises a separation chamber 401, two heating wires 402 are arranged on the outer surface of the separation chamber 401, a partition plate 403 is fixedly installed near the center of the inner wall of the separation chamber 401, the opposite inner walls of the partition plate 403 are rotatably connected with auger blades 404, an air outlet plate 405 is fixed near both ends of the inner wall of the separation chamber 401, two card slots 406 are arranged on the inner walls of the two auger blades 404, a forward and reverse motor 407 is arranged on the top of the support plate 1, the output shaft of the forward and reverse motor 407 is fixedly connected with a rotating shaft 408, and the outer surface of the rotating shaft 408 is opened Two limit grooves 409 are provided, and electromagnets 410 are fixedly sleeved near both ends of the outer surface of the rotating shaft 408, and the interiors of the two card slots 406 are slidably connected to limit plates 411, and multiple springs 412 are provided on the outer surfaces of the two limit plates 411. The multiple springs 412 are divided into two groups, and a clamping rod 413 is fixedly connected between one end of each group of springs 412. A sealing ring 414 is provided near one end of the outer surface of the rotating shaft 408, and a vacuum pump 415 is provided on the top of the support plate 1. The inlet and outlet ends of the vacuum pump 415 are fixedly connected to an air inlet pipe 416, and one end of the air inlet pipe 416 is fixedly connected to a drainage pipe 417. Two first solenoid valves 418 are provided on the outer surface of the drainage pipe 417, and pressure relief valves 418 are provided on the outer surface of the separation chamber 401 near both ends. A force sensor 419 is provided. A second solenoid valve 420 is provided on the outer surfaces of the two mud outlet pipes of the separation chamber 401. The top of the separation chamber 401 is fixedly connected to the top of the support plate 1. One end of the two auger blades 404 is movable through the relative inner wall of the separation chamber 401 to the inside. One end of the two auger blades 404 is movable through the outside of the two air outlet plates 405. The two ends of the rotating shaft 408 are movable through the opposite outside of the separation chamber 401. The two ends of the rotating shaft 408 are movable through the opposite outside of the two auger blades 404. The outer surfaces of the two electromagnets 410 are respectively penetrated into the inside of the two limit grooves 409. One end of the two sets of springs 412 is respectively fixedly connected to the outer surfaces of the two limit plates 411. The two clamping rods 41 The outer surfaces of the two clamping rods 413 respectively movably penetrate the outside of the two limit grooves 409, the outer surfaces of the two clamping rods 413 respectively slide with the inside of the four clamping grooves 406, both ends of the drainage tube 417 are fixedly penetrated into the interior of the separation bin 401, and the top of the separation bin 401 is provided with a shunt component 3, the shunt component 3 includes a discharge pipe 301, the bottom end of the discharge pipe 301 is fixedly connected with a first shunt pipe 302, the outer surface of the discharge pipe 301 is fixedly connected with a second shunt pipe 303, the outer surface of the first shunt pipe 302 is provided with an electric push rod 304, the top of the electric push rod 304 is fixedly installed with a push block 305, the outer surface of the push block 305 is fixedly connected with a sealing block 306, and the outer surface of the sealing block 306 is slidably connected with the inner wall of the first shunt pipe 302,The outer surface of the sealing block 306 is slidably connected to the inner wall of the second diverter pipe 303, and the bottom ends of the first diverter pipe 302 and the second diverter pipe 303 are fixedly connected to the interior of the separation chamber 401.

[0032] In this embodiment, after the dehydrated mud enters the discharge pipe 301, the material first enters the first branch pipe 302 along the discharge pipe 301 under its own gravity, and then enters the separation bin 401. Figure 6 As shown, the partition plate 403 divides the interior of the separation chamber 401 into two parts, the purpose of which is to achieve continuous output of mud blocks and heat and separate the mercury inside. When the mud blocks on one side of the separation chamber 401 corresponding to the first shunt pipe 302 are transported, the electric push rod 304 is started to shorten it, driving the push block 305 to move downward, and then driving the sealing block 306 to move downward, thereby sealing the output end of the first shunt pipe 302, so that the mud blocks entering the discharge pipe 301 can only be output outward along the second shunt pipe 303 and enter the interior of the separation chamber 401 in the auger blade 404 matching the second shunt pipe 303. In addition, the sealing block 306 is made of rubber material, which can realize the switching sealing and dredging of the first shunt pipe 302 and the second shunt pipe 303. There is no need to set switch valves for the first shunt pipe 302 and the second shunt pipe 303 respectively, which saves The forward and reverse motors 407 are started, and the heating wire 402 on this side is electrically connected to the external power supply to release heat outward, thereby heating the interior of the separation chamber 401, so that the temperature inside the separation chamber 401 on this side matches the boiling point of mercury in a vacuum state. In addition, the electromagnet 410 on this side is electrically connected to the external power supply to generate a magnetic field, thereby adsorbing two clamping rods 413 made of metal iron, and the forward and reverse motors 407 drive the rotating shaft 408 to rotate, thereby driving the two clamping rods 413 to rotate, thereby driving the two clamping grooves 406 connected to the clamping rods 413 to rotate, thereby driving the auger blades 404 matched thereto to rotate, thereby heating and stirring the mud blocks inside it, and at the same time starting the vacuum pump 415, and opening the first electromagnetic valve 418 matched thereto, thereby evacuating the gas in the separation chamber 401 on this side to form a negative pressure inside it, wherein, as Figure 6As shown, the two ends of the drainage pipe 417 are respectively connected to the outside of the two air outlet plates 405, and the micropores on the air outlet plates 405 can only pass gas but not mud, so that the gas in the separation chamber 401 will not bring out mud when vacuuming. When the pressure sensor 419 on this side detects that the pressure in the separation chamber 401 on this side reaches the required value, the vacuum pump 415 can be turned off, so that the mud in the separation chamber 401 on this side is stirred, transported and heated along the auger blades 404. When the mud is transported to the separation chamber When the auger blade 404 is at one end or one side of the partition plate 403, the forward and reverse motor 407 can be started again to drive the auger blade 404 to rotate in the opposite direction, thereby driving the mud block to move in the opposite direction and rotate. Under vacuum conditions, the air pressure is reduced, and the boiling point of mercury is also reduced. Heating the mud block can not only promote the evaporation of water, but also make the mercury evaporate in the form of steam without affecting most of the other solid components. The stirring of the auger blade 404 allows the heat to be more evenly transferred to the inside of the mud block, thereby improving the volatilization efficiency of mercury. The heating and stirring The combination promotes the migration of mercury in the mud block, so that the evaporated mercury can be discharged from the mud block faster, reducing the chance of its re-condensation. When the mercury changes from liquid or solid to gas, a large amount of mercury vapor will be released into the separation chamber 401, which will cause the gas partial pressure inside the separation chamber 401 on this side to increase, thereby reducing the degree of vacuum and being detected by the pressure sensor 419 on this side. At this time, the vacuum pump 415 can be started again to extract gas from the separation chamber 401 on this side again, so that the vaporized mercury and part of the water vapor are extracted from the separation chamber 401. After the mercury extraction is completed, the second solenoid valve 420 of the mud outlet pipe on this side is opened, and the forward and reverse motors 407 are continuously started to drive the auger blades 404 on this side to rotate, so that the mud block from which the mercury has been removed can be output through the mud outlet pipe, that is, the removal of mercury in the oil drilling mud is completed, thereby further improving the environmental protection characteristics and the recyclable utilization rate of the waste mud, and solving the problem that the waste mud in the oil drilling in the prior art contains a large amount of mercury and cannot be normally recycled, resulting in waste of resources.

[0033] like Figure 1 and Fig. 9 As shown, a liquefaction component 5 is arranged on the top of the support plate 1 near the front surface, and the liquefaction component 5 includes a low-temperature box 501. The bottom of the low-temperature box 501 is fixedly connected to the top of the support plate 1, and a semiconductor refrigeration plate 502 is arranged on the inner wall of the low-temperature box 501. The output end of the vacuum pump 415 is fixedly connected to an air outlet pipe 503, and both ends of the air outlet pipe 503 are respectively fixed to penetrate the opposite outsides of the low-temperature box 501. A collecting box 504 is fixedly installed on the top of the support plate 1 by screws, and the bottom end of the air outlet pipe 503 is fixed to penetrate the inside of the collecting box 504.

[0034] In this embodiment, the vaporized mercury is transported to the interior of the cryogenic box 501 through the outlet pipe 503. At this time, the semiconductor refrigeration sheet 502 can be electrically connected to the external power supply, wherein the cold surface of the semiconductor refrigeration sheet 502 faces the interior of the cryogenic box 501. The working principle of the semiconductor refrigeration sheet 502 is as follows: when current flows to the semiconductor refrigeration sheet 502, a temperature difference will be generated at the contact point between the N-type semiconductor and the P-type semiconductor. The contact point on one side will absorb heat, causing the temperature to drop, while the contact point on the other side will release heat, causing the temperature to rise. The semiconductor refrigeration sheet 502 is used to cool the interior of the cryogenic box 501, so that the vaporized mercury vapor and water vapor in the outlet pipe 503 are pre-cooled and liquefied and enter the interior of the collection box 504 for collection. Fig. 9 As shown, activated carbon for ventilation is arranged on the top of the collection box 504. The activated carbon has a highly developed porous structure and can effectively absorb mercury gas, so that the activated carbon can only output the air in the collection box 504 to the outside. Since the density of mercury is different from that of water, when the two are transported to the collection box 504 separately, a stratification phenomenon will occur, so that they are separated from each other as shown in FIG. Fig. 9 The liquid outlet in the collection box 504 is shown to collect the mercury liquid and prevent it from flowing into the air and polluting the environment.

[0035] like Figure 1 , Figure 5 and Figure 6-Figure 9 As shown, a device for treating waste mud from oil drilling comprises a support plate 1, a solid-liquid separation component 2 is arranged near the center of the top of the support plate 1, an extraction component 4 is arranged on the top of the support plate 1, the extraction component 4 comprises a separation chamber 401, two heating wires 402 are arranged on the outer surface of the separation chamber 401, a partition plate 403 is fixedly installed near the center of the inner wall of the separation chamber 401, and the opposite inner walls of the partition plate 403 are rotatably connected with auger blades 404, an air outlet plate 405 is fixed near both ends of the inner wall of the separation chamber 401, and two slots 406 are provided on the inner walls of the two auger blades 404, and a forward and reverse motor 407 is arranged on the top of the support plate 1. The output shaft of the forward and reverse motor 407 is fixedly connected to the rotating shaft 408, and two limit grooves 409 are provided on the outer surface of the rotating shaft 408. The outer surface of the rotating shaft 408 is fixedly sleeved with electromagnets 410 near both ends. The insides of the two card slots 406 are slidably connected with limit plates 411. The outer surfaces of the two limit plates 411 are provided with multiple springs 412. The multiple springs 412 are divided into two groups, and a clamping rod 413 is fixedly connected between one end of each group of springs 412. A sealing ring 414 is provided on the outer surface of the rotating shaft 408 near one end. A vacuum pump 415 is provided on the top of the support plate 1, and the inlet and outlet ends of the vacuum pump 415 are fixedly connected with an air inlet pipe 416.

[0036] In this embodiment, when the mud blocks on one side of the partition plate 403 are processed, the electromagnet 410 is powered off, and the electromagnet 410 at the other end is electrically connected to the external power supply to make it adsorb, thereby driving the two clamping rods 413 to move along the two limiting grooves 409 toward the other end of the rotating shaft 408, until the two clamping rods 413 are in tight contact with the outer surface of the energized electromagnet 410, so that the two clamping rods 413 move to the inside of another auger blade 404, wherein, as Figure 7 As shown, both ends of the clamping rod 413 are in an inclined state. When the two clamping rods 413 move to the inside of another auger blade 404 and are not aligned with the two clamping grooves 406, they will be squeezed by the inner wall of the auger blade 404, thereby shortening the multiple springs 412 until the two clamping rods 413 are in tight contact with the inner wall of the auger blade 404, and the forward and reverse motors 407 are started at the same time to drive the rotating shaft 408 to rotate, thereby driving the two clamping rods 413 to rotate. Since the weight of the two clamping rods 413 is much lower than the weight of the auger blade 404, the two clamping rods 413 are respectively rotated inside the auger blade 404. When the two When the clamping rod 413 is rotated to the positions corresponding to the two clamping slots 406 respectively, the two sets of springs 412 will stretch under the action of their own elastic force, driving the two clamping rods 413 to move to the inside of the two clamping slots 406 respectively, thereby realizing the connection between the clamping rod 413 and the auger blade 404 on the other side of the separation chamber 401. Then, the heating wire 402 on this side can be electrically connected to the external power supply to heat and stir the mud blocks in the separation chamber 401, thereby separating the mercury therein. By dividing the separation chamber 401 into two parts and switching between the mud block transportation and mercury separation processing, the working efficiency of mercury separation in the mud is further improved.

[0037] The use method and working principle of the device: During the oil drilling process, when the waste mud extracted during the mining process needs to be processed, the waste mud is first transported to the top of the filter screen in the vibrating screen body 201 through an external transport device, and then the vibrating screen body 201 is started to separate the rock fragments in the mud. The separated mud enters the interior of the centrifuge 206 through the discharge hopper 203, and the drive motor 205 is started to drive the rotor 207 to rotate, driving the mud to perform centrifugal motion inside the centrifuge 206. Due to the different densities of the mud and water in the mud, the mud and water are separated, and the separated water flows out through the liquid outlet pipe 208 and is collected by an external collection device. The separated mud enters the interior of the first diversion pipe 302 through the discharge pipe 301, and then enters the interior of the separation bin 401, as shown in FIG. Figure 6As shown, the partition plate 403 divides the interior of the separation chamber 401 into two parts, the purpose of which is to achieve continuous output of mud blocks and heat and separate the mercury inside. When the mud blocks on one side of the separation chamber 401 corresponding to the first shunt pipe 302 are transported, the electric push rod 304 is started to shorten it, driving the push block 305 to move downward, and then driving the sealing block 306 to move downward, thereby sealing the output end of the first shunt pipe 302, so that the mud blocks entering the discharge pipe 301 can only be output outward along the second shunt pipe 303 and enter the interior of the separation chamber 401 in the auger blade 404 matching the second shunt pipe 303, and the forward and reverse motors 407 are started, and at the same time, the heating wire 402 on this side is electrically connected to the external power supply to release it outward. Heat is released, thereby heating the interior of the separation chamber 401, so that the temperature inside the separation chamber 401 on this side matches the boiling point of mercury in a vacuum state. In addition, the electromagnet 410 on this side is electrically connected to an external power source to generate a magnetic field, thereby adsorbing two clamping rods 413 made of metal iron, and limiting the two clamping rods 413. The forward and reverse motors 407 drive the rotating shaft 408 to rotate, thereby driving the two clamping rods 413 to rotate, thereby driving the two clamping slots 406 connected to the clamping rods 413 to rotate, thereby driving the auger blades 404 matched thereto to rotate, thereby heating and stirring the mud blocks inside it, and at the same time starting the vacuum pump 415, and opening the first solenoid valve 418 matched with this side, thereby extracting the gas in the separation chamber 401 on this side. Vacuum is created to form negative pressure inside the separation bin 401. When the pressure sensor 419 on this side detects that the pressure inside the separation bin 401 on this side has reached the required value, the vacuum pump 415 can be turned off, so that the mud blocks in the separation bin 401 on this side are stirred, transported and heated along the auger blades 404. When the mud blocks are transported to one end of the separation bin 401 or one side of the partition plate 403, the forward and reverse motors 407 can be started again to drive the auger blades 404 to rotate in the opposite direction, thereby driving the mud blocks to move in the opposite direction and rotate. Under vacuum conditions, the air pressure is reduced and the boiling point of mercury is also reduced. Heating the mud blocks can not only promote the evaporation of water, but also make the mercury evaporate in the form of steam without affecting most of the other solid components. The stirring of the auger blades 404 allows the heat to be transferred more evenly. The mercury is delivered to the inside of the mud block, thereby improving the volatilization efficiency of the mercury. The combination of heating and stirring promotes the migration of mercury in the mud block, so that the evaporated mercury can be discharged from the mud block faster, reducing the chance of its re-condensation. When the mercury changes from liquid or solid to gas, a large amount of mercury vapor will be released into the separation chamber 401, which will cause the gas partial pressure inside the separation chamber 401 on this side to increase, thereby reducing the degree of vacuum, and detected by the pressure sensor 419 on this side. At this time, the vacuum pump 415 can be started again to draw gas into the separation chamber 401 on this side again, so as to draw the vaporized mercury and part of the water vapor out of the separation chamber 401. When the mercury extraction is completed, the second solenoid valve 420 of the mud outlet pipe on this side is opened, and the forward and reverse motors 407 are continued to be started.By driving the auger blade 404 on this side to rotate, the mud blocks that have been cleared of mercury can be discharged through the mud outlet pipe. When the mud blocks on one side of the partition plate 403 are processed, the electromagnet 410 is powered off at the same time, and the electromagnet 410 at the other end is electrically connected to the external power supply to make it adsorb, thereby driving the two clamping rods 413 to move along the two limiting grooves 409 toward the other end of the rotating shaft 408 respectively, until the two clamping rods 413 are in tight contact with the outer surface of the energized electromagnet 410, so that the two clamping rods 413 move to the inside of another auger blade 404, wherein, as, Figure 7 As shown, both ends of the clamping rod 413 are in an inclined state. When the two clamping rods 413 move to the inside of another auger blade 404 and are not aligned with the two clamping grooves 406, they will be squeezed by the inner wall of the auger blade 404, thereby shortening the multiple springs 412 until the two clamping rods 413 are in tight contact with the inner wall of the auger blade 404, and at the same time, the forward and reverse motors 407 are started to drive the rotating shaft 408 to rotate, thereby driving the two clamping rods 413 to rotate. Since the weight of the two clamping rods 413 is much lower than the weight of the auger blade 404, the two clamping rods 413 are respectively rotated inside the auger blade 404. When the two clamping rods 413 are respectively rotated to the positions corresponding to the two clamping grooves 406, the two groups of springs 412 will extend under the action of their own elastic force, driving the two clamping rods 413 to move to the inside of the two clamping grooves 406 respectively. The connection between the clamping rod 413 and the auger blade 404 on the other side of the separation chamber 401 is realized, and then the heating wire 402 on this side can be electrically connected to the external power supply to heat and stir the mud in the separation chamber 401, so as to separate the mercury therein, and the vaporized mercury is transported to the interior of the low temperature box 501 through the air outlet pipe 503. At this time, the semiconductor refrigeration plate 502 can be electrically connected to the external power supply, wherein the cold surface of the semiconductor refrigeration plate 502 is facing the interior of the low temperature box 501, and the temperature in the low temperature box 501 is cooled by the semiconductor refrigeration plate 502, so that the vaporized mercury vapor and water vapor in the air outlet pipe 503 are cooled and liquefied and enter the interior of the collection box 504 for collection. Since the density of mercury is different from that of water, when the two are transported to the collection box 504 respectively, stratification will occur, so that they are separated from each other as shown in the figure. Fig. 9 The liquid outlet in the collection box 504 is shown output.

[0038] The wiring diagram of the vibrating screen body 201, driving motor 205, centrifuge 206, electric push rod 304, heating wire 402, forward and reverse motor 407, electromagnet 410, vacuum pump 415, first solenoid valve 418, pressure sensor 419, second solenoid valve 420 and semiconductor cooling plate 502 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the vibrating screen body 201, driving motor 205, centrifuge 206, electric push rod 304, heating wire 402, forward and reverse motor 407, electromagnet 410, vacuum pump 415, first solenoid valve 418, pressure sensor 419, second solenoid valve 420 and semiconductor cooling plate 502 are no longer explained in detail.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for treating waste mud from oil drilling, comprising a support plate (1), wherein a solid-liquid separation component (2) is arranged near the center of the top of the support plate (1); Features: An extraction component (4) is arranged on the top of the support plate (1), and the extraction component (4) comprises a separation chamber (401). Two heating wires (402) are arranged on the outer surface of the separation chamber (401). A partition plate (403) is fixedly installed near the center of the inner wall of the separation chamber (401), and the inner walls opposite to each other of the partition plate (403) are rotatably connected to auger blades (404). An air outlet plate (405) is fixed near both ends of the inner wall of the separation chamber (401), and the inner walls of the two auger blades (404) are provided with two slots (406). A forward and reverse motor (407) is arranged on the top of the support plate (1), and the output shaft of the forward and reverse motor (407) is fixedly connected to a rotating shaft (408). The outer surface of the rotating shaft (408) is provided with two limit grooves (409); the outer surface of the rotating shaft (408) is fixedly sleeved with electromagnets (410) near both ends; the interiors of the two clamping grooves (406) are slidably connected to limit plates (411); the outer surfaces of the two limit plates (411) are provided with a plurality of springs (412); the plurality of springs (412) are divided into two groups; one end of each group of springs (412) is fixedly connected to a clamping rod (413); a sealing ring (414) is provided on the outer surface of the rotating shaft (408) near one end; a vacuum pump (415) is provided on the top of the support plate (1); the inlet and outlet ends of the vacuum pump (415) are fixedly connected to an air intake pipe (416).

2. The oil drilling waste mud treatment device according to claim 1 is characterized in that: One end of the air inlet pipe (416) is fixedly connected to a drainage pipe (417), two first solenoid valves (418) are provided on the outer surface of the drainage pipe (417), pressure sensors (419) are provided on the outer surface of the separation chamber (401) near both ends, and second solenoid valves (420) are provided on the outer surfaces of the two mud outlet pipes of the separation chamber (401).

3. The oil drilling waste mud treatment device according to claim 2 is characterized in that: The top of the separation chamber (401) is fixedly connected to the top of the support plate (1), one end of the two auger blades (404) are respectively movable to penetrate the opposite inner wall of the separation chamber (401) to the inside, one end of the two auger blades (404) are respectively movable to penetrate the outside of the two air outlet plates (405), the two ends of the rotating shaft (408) are respectively movable to penetrate the opposite outside of the separation chamber (401), and the two ends of the rotating shaft (408) are respectively movable to penetrate the opposite outside of the two auger blades (404).

4. The oil drilling waste mud treatment device according to claim 3 is characterized in that: The outer surfaces of the two electromagnets (410) respectively penetrate into the interior of the two limit grooves (409), one end of the two groups of springs (412) are respectively fixedly connected to the outer surfaces of the two limit plates (411), the outer surfaces of the two clamping rods (413) respectively movably penetrate into the outside of the two limit grooves (409), the outer surfaces of the two clamping rods (413) respectively slide with the inside of the four clamping grooves (406), and both ends of the drainage tube (417) are fixedly penetrated into the interior of the separation chamber (401).

5. The oil drilling waste mud treatment device according to claim 4 is characterized in that: A liquefaction component (5) is arranged at the top of the support plate (1) near the front surface, and the liquefaction component (5) comprises a low temperature box (501). The bottom of the low temperature box (501) is fixedly connected to the top of the support plate (1), and a semiconductor cooling plate (502) is arranged on the inner wall of the low temperature box (501).

6. The oil drilling waste mud treatment device according to claim 5, characterized in that: The output end of the vacuum pump (415) is fixedly connected to an air outlet pipe (503), and the two ends of the air outlet pipe (503) are respectively fixed to penetrate the opposite exteriors of the low-temperature box (501), and a collection box (504) is fixedly installed on the top of the support plate (1) by screws, and the bottom end of the air outlet pipe (503) is fixed to penetrate the interior of the collection box (504).

7. The oil drilling waste mud treatment device according to claim 6, characterized in that: A flow diversion component (3) is arranged on the top of the separation bin (401), and the flow diversion component (3) comprises a discharge pipe (301), the bottom end of the discharge pipe (301) is fixedly connected to a first flow diversion pipe (302), the outer surface of the discharge pipe (301) is fixedly connected to a second flow diversion pipe (303), and an electric push rod (304) is arranged on the outer surface of the first flow diversion pipe (302).

8. The oil drilling waste mud treatment device according to claim 7, characterized in that: A push block (305) is fixedly mounted on the top of the electric push rod (304); a sealing block (306) is fixedly connected to the outer surface of the push block (305); the outer surface of the sealing block (306) is slidably connected to the inner wall of the first shunt tube (302); the outer surface of the sealing block (306) is slidably connected to the inner wall of the second shunt tube (303); the bottom ends of the first shunt tube (302) and the second shunt tube (303) are both fixedly penetrated into the interior of the separation chamber (401).

9. The oil drilling waste mud treatment device according to claim 8, characterized in that: The solid-liquid separation component (2) comprises a vibrating screen body (201), a support frame (202) is fixed to the outer surface of the vibrating screen body (201), the bottom of the support frame (202) is fixedly connected to the top of the support plate (1), a discharge hopper (203) is fixedly installed between the opposite inner walls of the support frame (202), the top of the support plate (1) is fixedly connected to a fixing frame (204), and a driving motor (205) is arranged on the top of the fixing frame (204).

10. The oil drilling waste mud treatment device according to claim 9, characterized in that: A centrifuge (206) is fixedly installed near the center of the top of the fixed frame (204), the bottom of the discharge hopper (203) is fixedly penetrated into the interior of the centrifuge (206), the output end of the drive motor (205) is fixedly connected to a rotor (207), the two ends of the rotor (207) are movably penetrated to opposite exteriors of the centrifuge (206), the bottom of the centrifuge (206) is fixedly connected to a liquid outlet pipe (208), and the top end of the discharge pipe (301) is fixedly penetrated into the interior of the centrifuge (206).

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