Oil exploitation sludge deep filtration treatment equipment

Abstract

The invention discloses oil exploitation sludge deep filtration treatment equipment, and relates to the technical field of oil exploitation equipment, the oil exploitation sludge deep filtration treatment equipment comprises a deep outer heating cylinder, the top of the deep outer heating cylinder is provided with a top cover, the bottom of the deep outer heating cylinder is provided with a bottom support, the deep outer heating cylinder is internally provided with a middle cylinder, the middle cylinder is internally sleeved with an inner filter cylinder, and the inner filter cylinder is internally provided with a spiral cone paddle; an upper connecting shaft penetrates through the middle part of the spiral cone paddle; according to the invention, premixing is carried out through an external mixing container, and free radical reaction is initiated at high temperature and high pressure by virtue of supercritical water, a strong oxidant and a chemical agent, so that the solvent sludge reaction time is remarkably shortened; the special structures of the heat-conducting sewage conveying pipe and the deep external heating cylinder are also utilized to realize efficient heat transfer, and the pH value and the temperature are flexibly adjusted according to reaction requirements; the driving motor drives the spiral cone paddle to stir, mixing is promoted, reaction is accelerated, internal circulation of the sludge is formed, the inner filter cylinder is driven by the servo motor to rotate, and solid-liquid separation is achieved through centrifugal force.

Description

Technical Field

[0001] The invention relates to the technical field of oil production equipment, in particular to oil production sludge deep filtering and processing equipment. Background Art

[0002] As an important global energy resource, oil occupies an irreplaceable position in modern industry and daily life. With the continuous development of the global economy, the demand for oil is also rising. In order to meet the growing energy demand, the scale of oil extraction is constantly expanding, and the extraction technology is becoming increasingly complex and diverse, covering a variety of environments such as land and sea. Oil extraction sludge not only contains petroleum substances, such as crude oil, wax, asphaltene, etc., but also contains heavy metals (such as mercury, cadmium, lead, chromium, etc.), sediment, microorganisms and various chemical agents. These components make the sludge show the characteristics of high viscosity, high water content and high pollution.

[0003] If oil extraction sludge is directly discharged or piled up without effective treatment, the petroleum substances in it will seep into the soil, destroy the soil structure, affect the soil's air permeability and water permeability, cause soil fertility to decline, and affect vegetation growth; at the same time, petroleum substances and heavy metals may also enter the surface water and groundwater systems through rainwater erosion, surface runoff and other pathways, causing water pollution, endangering the survival of aquatic organisms, and affecting the safe use of water resources. In addition, harmful substances in the sludge may also evaporate into the air, polluting the atmospheric environment and affecting the health of surrounding residents.

[0004] In conjunction with the above content, it should be noted that: Chinese patent application number CN2021218717207 discloses a biological skid-mounted device for deep treatment of oily sludge, which uses a dehydration tank to perform traditional rotary solid-liquid separation on petroleum sludge with water, related microorganisms and chemical agents, and treats the separated sewage and sludge separately, thereby accelerating the efficiency of sludge dehydration and reuse; In fact, during the actual deep treatment of petroleum sludge, the centrifugal rotating separation of the above patent content can only remove some larger particles of impurities and some water, and cannot effectively remove pollutants such as petroleum substances and heavy metals in the sludge. The treated sludge is still difficult to meet environmental emission standards and difficult to achieve resource utilization.

[0005] At the same time, petroleum sludge is also treated with microorganisms through biodegradation boxes and microbial agents. Different microorganisms have very different metabolic abilities for petroleum substances and heavy metals. Under suitable environments, it may take 1-2 weeks to achieve a good treatment effect, which can easily lead to low efficiency in petroleum sludge treatment and accumulation and sedimentation of petroleum sludge causing blockages and other chain problems.

[0006] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a deep filtration treatment device for oil production sludge to solve the problems raised.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deep filtration treatment equipment for oil production sludge, comprising a deep external heating cylinder, a top cover is arranged on the top of the deep external heating cylinder, a bottom support is arranged on the bottom of the deep external heating cylinder, a middle cylinder is arranged inside the deep external heating cylinder, an inner filter cylinder is sleeved inside the middle cylinder, a spiral cone paddle is arranged inside the inner filter cylinder, and an upper connecting shaft is arranged through the middle of the spiral cone paddle; A driving motor connected to an upper connecting shaft is arranged on the top of the top cover, a servo motor is arranged on the bottom of the bottom support, and a lower connecting shaft facing the upper connecting shaft is arranged on the output end of the servo motor.

[0009] Furthermore, a sealing plate connected to the bottom support is arranged on the inner wall of the bottom of the deep external heating cylinder, a heater is embedded in the top of the sealing plate, a heat-conducting sewage pipe is spirally arranged above the heater, and a drainage pipe located on the side of the heater is embedded in the top of the sealing plate.

[0010] Furthermore, a water collecting trough is provided in a depression on the outer side of the inner wall at the bottom of the middle tube, a drain valve penetrating the bottom support is provided at the bottom of the water collecting trough, and a plurality of guide rings are provided at intervals inside the water collecting trough.

[0011] Furthermore, a plurality of filter elements are embedded on the inner cylinder wall of the inner filter cylinder, a ring sleeve connected with a guide ring sleeve is provided at the bottom of the inner filter cylinder, and the diameter of the inner filter cylinder is smaller than the diameter of the water collection tank.

[0012] Furthermore, a drain valve is provided on the top of the base, which passes through the middle cylinder and is embedded in the bottom center of the inner filter cylinder. A drain pipe is provided at the end of the bottom of the base away from the servo motor, and the drain pipe is flange-connected to the drain valve. A sewage drain pipe is provided on the side of the drain pipe, and the sewage drain pipe is flange-connected to the drain valve.

[0013] Furthermore, a metal frame connected to the base is provided on the outer wall of the servo motor, a connecting tooth piece meshingly connected to the bottom of the inner filter cartridge is provided on the top of the lower connecting shaft, and a tooth groove connected to the connecting tooth piece is provided in a recessed manner at the bottom of the inner filter cartridge.

[0014] Furthermore, a water injection port is provided through the side edge of the top of the top cover, and the bottom of the water injection port is located between the middle tube and the deep outer heat tube, a cylinder column embedded in the top of the middle tube is provided at the bottom of the top cover, a sewage spray port with an annular structure is provided at the bottom of the cylinder column, and a driving motor is provided at the center of the top of the top cover.

[0015] Furthermore, a rotating sleeve is provided in the middle of the spiral cone impeller, and an upper shaft sleeve inserted into the bottom of the cylinder is sleeved inside the rotating sleeve, the top of the upper connecting shaft is inserted into the top cover and is connected to the driving motor, the upper connecting shaft is sleeved inside the upper shaft sleeve, and the bottom of the upper shaft sleeve is sleeved with the top of the lower connecting shaft, a plurality of groups of notches are provided on the outer wall in the middle of the upper shaft sleeve, and a driven gear roller connected to the upper connecting shaft and the rotating sleeve is provided inside the notch.

[0016] The beneficial effects of the present invention are: The present invention uses an external mixing container for premixing, combined with supercritical water, a strong oxidant and a chemical agent, to induce a free radical reaction under high temperature and high pressure, greatly accelerating the degradation rate of organic matter, and sharply reducing the reaction time of solvent sludge. The structural design between the heat-conducting sewage transport pipe and the deep external heating cylinder is utilized to effectively transfer the high-temperature heat of the special heating water to the solvent sludge, and the spiral heat-conducting sewage transport pipe prolongs the heating time and distance of the solvent sludge, ensuring that it is continuously and fully heat-treated. According to the requirements of different oxidation reactions for pH values, the method can be flexibly and adaptively adjusted at the implementation site, and the reaction temperature can be accurately controlled according to actual conditions, which can not only accelerate the reaction rate, but also avoid the decomposition of the oxidant or side reactions caused by improper temperature.

[0017] The present invention uses a driving motor to drive the spiral cone paddle to continuously rotate and stir the solvent sludge retained in the inner filter cartridge, thereby promoting full mixing of the petroleum sludge and the reagent, further accelerating the reaction under a high temperature environment, and at the same time, the unique spiral cone paddle structure causes the solvent sludge to form an internal circulation, thereby improving the reaction effect.

[0018] The present invention rotates the inner filter cartridge under the drive of a servo motor, and utilizes the centrifugal force generated by the spiral cone paddle and the rotation to make the water in the solvent sludge and the substances smaller than the mesh number of the filter element overflow to the sump and be discharged centrally, thereby obtaining the treated concentrated sludge, and realizing efficient solid-liquid separation and purification. The equipment is equipped with a drain valve, which can realize the pressure relief and discharge of the concentrated sludge in the inner filter cartridge, and then quickly guide the new solvent sludge into the equipment for deep filtration treatment, thereby ensuring the continuity and stability of the entire treatment process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the internal structure of the deep external heating cylinder of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the deep external heating cylinder of the present invention; Figure 4 It is a schematic diagram of the structure of the base and the servo motor of the present invention; Figure 5 It is a structural schematic diagram of the middle tube of the present invention; Figure 6 It is a schematic diagram of the structure of the inner filter cartridge of the present invention; Figure 7 It is a structural schematic diagram of the spiral cone impeller of the present invention; Figure 8 It is a schematic diagram of the structure of the upper shaft sleeve and the driven gear roller of the present invention; Fig. 9 It is a schematic structural diagram of the top cover of the present invention.

[0021] Figure numerals: 1. deep external heating cylinder; 101. heater; 102. heat-conducting sewage pipe; 103. drain pipe; 2. top cover; 201. driving motor; 202. water injection port; 203. sewage spray port; 3. servo motor; 301. lower connecting shaft; 302. connecting gear; 4. middle cylinder; 401. water collecting tank; 402. guide ring; 5. inner filter cylinder; 501. filter element; 502. ring sleeve; 6. spiral cone paddle; 601. rotating sleeve; 602. upper shaft sleeve; 604. upper connecting shaft; 605. driven gear roller; 7. bottom support; 701. sewage pipe; 702. sewage pipe; 703. sewage valve. DETAILED DESCRIPTION

[0022] 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 described embodiments 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.

[0023] Example 1: Please refer to Figure 1 - Fig. 9 As shown, this embodiment is a deep filtration treatment device for oil production sludge, comprising a deep external heating cylinder 1, a top cover 2 is arranged on the top of the deep external heating cylinder 1, a bottom support 7 is arranged on the bottom of the deep external heating cylinder 1, a middle cylinder 4 is arranged inside the deep external heating cylinder 1, an inner filter cylinder 5 is sleeved inside the middle cylinder 4, a spiral cone paddle 6 is arranged inside the inner filter cylinder 5, and an upper connecting shaft 604 is arranged through the middle of the spiral cone paddle 6; The petroleum sludge is preliminarily mixed with chemical agents such as strong oxidants and supercritical water in an external mixing container, and the pH value is adjusted to obtain solvent sludge, which is then extracted from the mixing container by an external pump. The bottom of the pump is connected to the bottom flange of the heat-conducting sewage pipe 102, and the solvent sludge is transported through the deep external heat cylinder 1 and the middle cylinder 4.

[0024] A sealing plate connected to the bottom bracket 7 is arranged on the inner wall of the bottom of the deep external heating cylinder 1, a heater 101 is embedded on the top of the sealing plate, a heat-conducting sewage pipe 102 is spirally arranged above the heater 101, and a drainage pipe 103 located on the side of the heater 101 is embedded on the top of the sealing plate. Before the solvent sludge enters the heat-conducting sewage pipe 102, an external water pump is connected to the water injection port 202 pipeline through a pipe fitting, and the special water for external heating is injected into the water injection port 202; The special heating water is continuously pumped into the space between the deep outer heat cylinder 1 and the middle cylinder 4 through the water inlet 202 until the space between the two is filled with the special heating water. At the same time, the heater 101 is continuously started to continuously heat the filled special heating water until the special heating water continuously maintains the required high temperature.

[0025] When the heat-conducting sewage pipe 102 guides the solvent sludge through the dedicated heating water area, the high-temperature heat inside the dedicated heating water is transferred to the solvent sludge along the heat-conducting sewage pipe 102, so that the solvent sludge is continuously treated with high temperature in the narrow space inside the heat-conducting sewage pipe 102. In addition, the heat-conducting sewage pipe 102 body is arranged in a spiral shape, which further extends the time and distance for the solvent sludge to pass through the dedicated heating water area, so that the solvent sludge is continuously and fully heat-treated, thereby realizing the supercritical water oxidation treatment of the solvent sludge, greatly and sharply reducing the reaction time of the solvent sludge, using supercritical water as the reaction medium, and using chemical agents such as air, oxygen, and hydrogen peroxide as catalysts, a free radical reaction is initiated under high temperature and high pressure conditions, so that organic matter is rapidly degraded.

[0026] It should be noted that: different oxidation reactions have their appropriate pH ranges for adjusting the pH value. For example, the optimal pH range for the Fenton reaction is generally 2-4. Within this range, the activity of the catalyst is higher and can accelerate the reaction rate. Therefore, according to the actual solvent sludge reaction adjustment needs, adaptive adjustments are made at the implementation site according to the situation, and are not limited to graphic descriptions.

[0027] Control temperature: Properly increasing the reaction temperature can speed up the reaction rate, but care should also be taken to avoid excessively high temperatures that may cause decomposition of the oxidant or other side reactions. For example, the reaction rate of Fenton's reagent increases with rising temperature, but when the temperature is higher than 40℃-50℃, it will accelerate the decomposition into O2 and H2O. Therefore, it is mostly controlled to occur at 20℃-40℃, but it is not limited to this. It should be regulated according to actual needs.

[0028] Embodiment 2: This embodiment is a deep filtration treatment device for oil extraction sludge, including a top cover 2 with a driving motor 201 connected to an upper connecting shaft 604, a bottom support 7 with a servo motor 3, and an output end of the servo motor 3 with a lower connecting shaft 301 facing the upper connecting shaft 604.

[0029] A water injection port 202 is provided through the top side of the top cover 2, and the bottom of the water injection port 202 is located between the middle tube 4 and the deep outer heat tube 1. A column embedded in the top of the middle tube 4 is provided at the bottom of the top cover 2, and a sewage spray port 203 with an annular structure is provided at the bottom of the column. A driving motor 201 is provided at the top center of the top cover 2; the top of the heat-conducting sewage pipe 102 is inserted into the column and communicated with the sewage spray port 203 at the bottom of the column; Under the continuous pressure increase of the external pump, the solvent sludge after high-temperature treatment is sprayed into the inner filter cartridge 5 along the sewage spray port 203. The solvent sludge continues to accumulate inside the inner filter cartridge 5 and is affected by the high-temperature heat carried by the continuously added solvent sludge itself, so that the high temperature inside the inner filter cartridge 5 is continuously maintained under certain conditions.

[0030] A rotating sleeve 601 is provided in the middle of the spiral cone impeller 6, and an upper shaft sleeve 602 inserted into the bottom of the column is sleeved inside the rotating sleeve 601. The top of the upper connecting shaft 604 is inserted into the top cover 2 and is connected to the driving motor 201. The upper connecting shaft 604 is sleeved inside the upper shaft sleeve 602, and the bottom of the upper shaft sleeve 602 is sleeved with the top of the lower connecting shaft 301. A plurality of groups of notches are provided on the outer wall in the middle of the upper shaft sleeve 602, and a driven gear roller 605 is provided inside the notch to connect the upper connecting shaft 604 and the rotating sleeve 601.

[0031] The driving motor 201 on the top cover 2 is started first, and the output end of the driving motor 201 is connected to the upper connecting shaft 604 through a coupling and related accessories, and drives the upper connecting shaft 604 to rotate. The upper connecting shaft 604 rotates inside the upper shaft sleeve 602, and at the same time, the upper connecting shaft 604 is meshed and connected with the rotating sleeve 601 through the driven gear roller 605, thereby driving the spiral cone paddle 6 to rotate, and the solvent sludge retained in the inner filter cartridge 5 is continuously rotated and stirred by the spiral cone paddle 6, so that it is mixed again, which is beneficial to the full mixing of the petroleum sludge and the agent inside the solvent sludge, and accelerates the reaction under high temperature environment.

[0032] At the same time, influenced by the structure of the spiral cone paddle 6, the solvent sludge at the top of the inner filter cartridge 5 is pushed to flow downward along the center, and the solvent sludge at the outside of the bottom of the inner filter cartridge 5 is pushed to flow upward, forming a sludge circulation structure.

[0033] A metal frame connected to the base 7 is provided on the outer wall of the servo motor 3, a connecting tooth piece 302 meshing with the bottom of the inner filter cartridge 5 is provided on the top of the lower connecting shaft 301, and a tooth groove engaged with the connecting tooth piece 302 is provided in the bottom recess of the inner filter cartridge 5; the servo motor 3 is connected to the lower connecting shaft 301 through a coupling, and the lower connecting shaft 301 is meshingly connected with the tooth groove through the connecting tooth piece 302, and drives the inner filter cartridge 5 to rotate along the inside of the middle cartridge 4, the bottom of the inner filter cartridge 5 is restricted by the guide ring 402 and the ring sleeve 502, and the top of the inner filter cartridge 5 is restricted by the cylinder column inside the middle cartridge 4, thereby maintaining the inner filter cartridge 5 to rotate smoothly inside the middle cartridge 4.

[0034] A plurality of filter elements 501 are embedded on the inner cylinder wall of the inner filter cartridge 5, and a ring sleeve 502 which is sleeved with the guide ring 402 is arranged at the bottom of the inner filter cartridge 5. The diameter of the inner filter cartridge 5 is smaller than that of the water collecting tank 401. During the rotation of the inner filter cartridge 5, the water inside the solvent sludge and the substances smaller than the mesh number of the filter element 501 overflow under the action of the centrifugal force of the spiral cone paddle 6 and the inner filter cartridge 5 until they enter between the inner filter cartridge 5 and the middle cylinder 4, and drip downstream along the inner wall of the middle cylinder 4 and the outer wall of the inner filter cartridge 5 into the water collecting tank 401. The water collecting tank 401 discharges the sewage through the sewage pipe 702 and the drain valve to obtain the treated concentrated sludge retained in the inner filter cartridge 5.

[0035] A water collecting groove 401 is provided on the outer side of the inner wall at the bottom of the middle tube 4 , a drain valve penetrating the bottom bracket 7 is provided at the bottom of the water collecting groove 401 , and a plurality of guide rings 402 are provided at intervals inside the water collecting groove 401 .

[0036] A drain valve 703 is provided on the top of the bottom support 7, which penetrates the middle cylinder 4 and is embedded in the bottom center of the inner filter cartridge 5. A drain pipe 701 is provided at the end of the bottom of the bottom support 7 away from the servo motor 3, and the drain pipe 701 is flange-connected to the drain valve 703. A sewage drain pipe 702 is provided on the side of the drain pipe 701, and the sewage drain pipe 702 is flange-connected to the drain valve. The drain valve 703 is opened, so that the thick sludge that is continuously accumulated after continuous treatment inside the inner filter cartridge 5 is pressure-relieved and discharged. After the inner filter cartridge 5 rotates a certain angle, the hollow at the bottom of the inner filter cartridge 5 is docked with the drain valve 703, and the thick sludge is guided along the drain valve 703 into the drain pipe 701 until it is concentrated and discharged, and then the solvent sludge in the external mixing container is guided again to enter the equipment for deep filtration treatment.

[0037] Combining Example 1 and Example 2, it can be seen that the present invention uses an external mixing container for premixing, with the help of supercritical water, strong oxidants and chemical agents, to induce free radical reaction under high temperature and high pressure, thereby significantly shortening the solvent sludge reaction time; utilizing the special structure of the heat-conducting sewage pipe 102 and the deep external heating cylinder 1 to achieve efficient heat transfer, and can also flexibly adjust the pH value and temperature according to the reaction requirements.

[0038] The spiral cone paddle 6 is driven by the driving motor 201 to stir, promote mixing, accelerate the reaction and form an internal circulation of sludge. The inner filter cartridge 5 is driven by the servo motor 3 to rotate, and the centrifugal force is used to achieve solid-liquid separation. The drain valve 703 can realize the discharge of concentrated sludge, so that the equipment can quickly process new solvent sludge, ensure the continuous and stable treatment process, and improve production efficiency.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A deep filtration treatment device for oil production sludge, comprising a deep external heating cylinder (1), characterized in that: The top of the deep external heating cylinder (1) is provided with a top cover (2), the bottom of the deep external heating cylinder (1) is provided with a bottom support (7), a middle cylinder (4) is provided inside the deep external heating cylinder (1), an inner filter cylinder (5) is sleeved inside the middle cylinder (4), a spiral cone impeller (6) is provided inside the inner filter cylinder (5), and an upper connecting shaft (604) is provided through the middle of the spiral cone impeller (6); A driving motor (201) connected to an upper connecting shaft (604) is arranged on the top of the top cover (2), a servo motor (3) is arranged on the bottom of the bottom bracket (7), and a lower connecting shaft (301) facing the upper connecting shaft (604) is arranged at the output end of the servo motor (3).

2. The deep filtration treatment equipment for oil production sludge according to claim 1 is characterized in that: A sealing plate connected to the bottom bracket (7) is arranged on the inner wall of the bottom of the deep external heating cylinder (1), a heater (101) is embedded on the top of the sealing plate, a heat-conducting sewage pipe (102) is spirally arranged above the heater (101), and a drainage pipe (103) located on the side of the heater (101) is embedded on the top of the sealing plate.

3. The deep filtration treatment equipment for oil production sludge according to claim 1 is characterized in that: A water collecting groove (401) is provided in a recessed manner on the outer side of the inner wall at the bottom of the middle cylinder (4), a drain valve penetrating the bottom bracket (7) is provided at the bottom of the water collecting groove (401), and a plurality of groups of guide rings (402) are provided at intervals inside the water collecting groove (401).

4. The deep filtration treatment equipment for oil production sludge according to claim 3 is characterized in that: A plurality of filter elements (501) are embedded on the inner cylinder wall of the inner filter cylinder (5), a ring sleeve (502) sleeved with a guide ring (402) is provided at the bottom of the inner filter cylinder (5), and the diameter of the inner filter cylinder (5) is smaller than the diameter of the water collecting tank (401).

5. The deep filtration treatment equipment for oil production sludge according to claim 1 is characterized in that: A sewage valve (703) is arranged at the top of the base (7) and penetrates the middle cylinder (4) and is embedded in the bottom center of the inner filter cylinder (5). A sewage pipe (701) is arranged at one end of the bottom of the base (7) away from the servo motor (3). The sewage pipe (701) is flange-connected to the sewage valve (703). A sewage pipe (702) is arranged on the side of the sewage pipe (701).

6. The deep filtration treatment equipment for oil production sludge according to claim 1 is characterized in that: A metal frame connected to the base (7) is provided on the outer wall of the servo motor (3), and a connecting toothed piece (302) meshingly connected to the bottom of the inner filter cartridge (5) is provided on the top of the lower connecting shaft (301).

7. The deep filtration treatment equipment for oil production sludge according to claim 1 is characterized in that: A water injection port (202) is provided through the side edge of the top of the top cover (2), and the bottom of the water injection port (202) is located between the middle cylinder (4) and the deep outer heat cylinder (1); a cylinder column embedded in the top of the middle cylinder (4) is provided at the bottom of the top cover (2); a sewage spray port (203) with an annular structure is provided at the bottom of the cylinder column; and a driving motor (201) is provided at the top center of the top cover (2).

8. The deep filtration treatment equipment for oil production sludge according to claim 7 is characterized in that: A rotating sleeve (601) is provided in the middle of the spiral cone impeller (6), an upper sleeve (602) inserted into the bottom of the column is sleeved inside the rotating sleeve (601), the top of the upper connecting shaft (604) is inserted into the top cover (2) and is transmission-connected to the drive motor (201), the upper connecting shaft (604) is sleeved inside the upper sleeve (602), and the bottom of the upper sleeve (602) is sleeved with the top of the lower connecting shaft (301), a plurality of groups of notches are provided on the outer wall of the middle of the upper sleeve (602), and a driven gear roller (605) is provided inside the notch to mesh with the upper connecting shaft (604) and the rotating sleeve (601).

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