Harmless resourceful treatment equipment for oily sludge

Abstract

The utility model discloses harmless resourceful treatment equipment for oily sludge, which comprises an equipment frame body, a sludge stirring box, an oil scraping assembly, an oil collecting box and a filter pressing assembly, the sludge stirring box is fixedly connected in the equipment frame body, the oil scraping assembly is arranged at the upper end of the sludge stirring box, a stirring system is arranged in the sludge stirring box, and the oil collecting box is connected with the filter pressing assembly. An oil guide port is formed in one side of the upper end of the sludge stirring box, an oil liquid collecting box is arranged in the equipment frame body on one side of the oil guide port, a sludge outlet is formed in one side of the lower end of the sludge stirring box, a filter pressing box is arranged below the sludge outlet, and a filter pressing assembly is arranged at the upper end of the filter pressing box. The utility model aims to provide harmless resourceful treatment equipment for oily sludge, which has the advantages of high oil stain separation efficiency, high operation safety and automatic treatment.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment equipment, specifically to a harmless resource-based treatment equipment for oily sludge. Background Technology

[0002] In the petrochemical and oilfield extraction processes, large quantities of oily sludge are often generated. This type of sludge not only contains significant amounts of petroleum pollutants but also frequently includes other harmful substances. If not properly treated, it can cause serious environmental pollution. Therefore, the harmless treatment and resource reuse of oily sludge has become a crucial issue for environmental protection and resource conservation.

[0003] Traditional methods for treating oily sludge mainly include landfilling, incineration, and physicochemical separation. While these methods have addressed the issue of oily sludge treatment to some extent, they also have limitations. Landfilling and incineration require large amounts of land and energy, and may also generate secondary pollution during the process. Physicochemical separation technology, on the other hand, requires complex equipment and incurs high costs, and its treatment efficiency is significantly affected by the properties of the sludge.

[0004] In recent years, with increasingly stringent environmental protection requirements and the promotion of resource utilization concepts, the development of efficient, environmentally friendly, and economical oily sludge treatment technologies has become an urgent issue. In particular, the effective recovery and utilization of oil in oily sludge can not only reduce environmental pollution but also achieve resource reuse. Therefore, designing an efficient and harmless treatment device for oily sludge that can simultaneously achieve oil recovery and sludge harmless treatment is a current research focus.

[0005] This invention provides a harmless resource utilization treatment device for oily sludge, aiming to solve the problems existing in the prior art. This device can not only efficiently separate oil from oily sludge and achieve oil recycling, but also further treat the separated sludge to achieve harmlessness. By optimizing the equipment structure and processing flow, the treatment efficiency and resource recovery rate are improved, demonstrating high practical value and promising prospects for widespread application. Utility Model Content

[0006] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a harmless resource-based treatment equipment for oily sludge that has high efficiency in separating oily sludge, high operational safety, and can be automated.

[0007] The technical solution adopted by this utility model to achieve the above objectives is: a harmless resource utilization treatment device for oily sludge, including a device frame, a sludge mixing tank, an oil scraping component, an oil collection tank, and a filter press component. The sludge mixing tank is fixedly connected within the device frame. An oil scraping component is installed at the upper end of the sludge mixing tank, used to scrape floating oil stains from the upper part of the sludge mixing tank towards the oil collection tank. A mixing system is installed inside the sludge mixing tank, used to mix sludge, water, chemicals, etc. An oil guide port is provided on one side of the upper end of the sludge mixing tank, used to push floating oil stains out of the sludge mixing tank. A sealing component is connected to the oil guide port to prevent sludge water from flowing out of the sludge mixing tank during the sludge mixing process. An oil guide plate is fixedly connected to the outer wall of the sludge mixing tank below the oil guide port, the oil guide plate being used for... To guide the oil sludge, the oil guide plate is inclined downwards, and an oil collection tank is located below the oil guide plate. The oil collection tank is used to collect the oil sludge and is fixedly connected to the equipment frame on one side of the sludge mixing tank. Electric push rods are fixedly connected to the equipment frame on both sides of the oil collection tank. The electric push rods can lift one end of the equipment frame to facilitate the discharge of sludge from the sludge mixing tank. A sludge outlet is opened on one side of the lower end of the sludge mixing tank to discharge the separated sludge. A flip-top assembly is installed at the sludge outlet. During the sludge-water mixing process, the sludge outlet can be closed by the flip-top assembly. A filter press is located below the sludge outlet and is fixedly connected to one side of the equipment frame. A filter press assembly is installed at the upper end of the filter press for squeezing and dewatering the sludge in the filter press.

[0008] In one embodiment, the oil scraping assembly includes a first screw, a first motor, and an oil scraper. The first screw is rotatably connected to the equipment frame on both sides of the sludge mixing tank. The two ends of the oil scraper are threaded to the first screw, and the middle part of the oil scraper is slidably connected to the opening at the upper end of the sludge mixing tank. One end of the first screw is connected to the first motor, and the first motor is fixedly connected to the equipment frame.

[0009] In one embodiment, the mixing system includes a mixing motor, a mounting plate, a mixing shaft, a horizontal support, and mixing blades. The mounting plate is fixedly connected to the equipment frame below the sludge mixing tank. The mixing motor is fixedly connected to the bottom of the mounting plate. The mixing shaft is fixedly connected to the end of the rotating shaft of the mixing motor. The mixing shaft passes through the mounting plate and is rotatably connected to the sludge mixing tank. Several mixing blades are fixedly connected to the mixing shaft inside the sludge mixing tank. The top end of the mixing shaft is rotatably connected to one end of the horizontal support, and the other end of the horizontal support is fixedly connected to one side of the inner wall of the sludge mixing tank.

[0010] In one embodiment, the sealing assembly includes a transverse plate, connecting rods, a sealing plate, a second screw, and a second motor. The second screw is rotatably connected to both sides of the equipment frame. Both ends of the mounting plate are threaded onto the second screw. One end of the second screw is connected to the second motor, which is fixedly connected to the equipment frame. Several connecting rods are fixedly connected to one side of the transverse plate. The other end of the connecting rod is fixedly connected to the sealing plate. The sealing plate is closed and connected to the outside of the oil guide port, and a sealing strip is provided on the outer edge of the oil guide port.

[0011] In one embodiment, the flip-top assembly includes a flip-top plate, a baffle support rod, a support motor, and a rubber wheel. The flip-top plate is hinged to the bottom of the sludge mixing tank on one side of the sludge outlet edge. The flip-top plate is closed and connected to the bottom of the sludge outlet. Support plates are fixedly connected to the equipment frame on both sides of the sludge outlet. A support motor is fixedly connected to the outer surface of the support plate. The rotating shaft of the support motor passes through the support plate and is fixedly connected to one end of the baffle support rod. The other end of the baffle support rod is rotatably connected to a rubber wheel, which abuts against the bottom of the flip-top plate.

[0012] In one embodiment, the filter press assembly includes a fixed plate, a third motor, a third screw, a U-shaped bracket, and a filter press plate. The fixed plate is fixedly connected to one side of the equipment frame. Two sets of third motors are fixedly connected to the fixed plate. The rotating shafts of the third motors pass through the fixed plate and are fixedly connected to the third screws. The top ends of the U-shaped brackets are threaded to the third screws, and the lower ends of the U-shaped brackets are fixedly connected to the filter press plate. The filter press plate is slidably connected inside the filter press box.

[0013] In one embodiment, the filter press box has several filter holes at its lower end, a cake outlet on one side of the filter press box, a side cover plate closedly connected to the outer side of the cake outlet, several slot plates fixedly connected to both sides of the edge of the side cover plate, and slots respectively formed on the slot plates. Several rotating shaft brackets are fixedly connected to both sides of the filter press box, and threaded rods are rotatably connected to the rotating shaft brackets. The threaded rods are inserted into the slots, and a knob block is threadedly connected to the end of the threaded rods. The knob block abuts against the slot plate.

[0014] The beneficial effects of this utility model are:

[0015] 1. High-efficiency oil separation: The equipment is equipped with a special oil scraping component and oil guiding system, which can effectively separate the oil from the sludge. Through the uniform mixing of the stirring system and static separation, the oil floats on the water surface. Then, the oil scraper scrapes the oil into the oil collection tank, achieving high-efficiency oil recovery.

[0016] 2. High degree of automation: The equipment adopts a variety of automated devices, including electric push rods, stirring motors, sealing components, flip-top components and filter press components, which can realize automated operation in the process of treating oily sludge, reduce manual intervention, and improve processing efficiency and safety;

[0017] 3. Environmentally friendly and harmless treatment: Through a reasonable treatment process, the equipment can recover the oil from the oily sludge. The remaining sludge is dewatered by pressure filtration to form a sludge cake, which avoids secondary pollution. The sludge cake can be reused as a matrix material, realizing the resource utilization of sludge and meeting environmental protection requirements.

[0018] 4. The equipment has a compact structure and is easy to operate: the frame of the equipment is reasonably designed, occupies a small area, the functional modules of each part of the equipment are compactly laid out, the operation process is simple and convenient, and it is suitable for use under various working conditions.

[0019] 5. High processing efficiency: The mixing system in the equipment adopts a mixing shaft and mixing rotary blade design, which can effectively cut and mix sludge, improve the mixing effect of sludge with water and chemicals, shorten the processing time, and improve the overall processing efficiency.

[0020] 6. Good economic efficiency: By recovering oil from oily sludge and reusing sludge, the cost of waste disposal is reduced, resulting in high economic benefits. In addition, the automated operation of the equipment reduces labor costs, further improving economic efficiency.

[0021] 7. High operational safety: The automated design of the equipment reduces direct contact between operators and harmful sludge, lowers safety risks during operation, and ensures the health and safety of operators.

[0022] In summary, the harmless resource recovery equipment for oily sludge of this invention, through efficient oil separation, automated processing flow and reasonable structural design, not only solves the shortcomings of traditional oily sludge treatment methods, but also significantly improves treatment efficiency and resource recovery rate, and has significant practical value and broad application prospects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the oil scraping component structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure of the stirring system of this utility model;

[0026] Figure 4 This is a schematic diagram of the stirring system structure of this utility model;

[0027] Figure 5This is a schematic diagram of the flip cover assembly structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the sealing component structure of this utility model;

[0029] Figure 7 This is a schematic diagram of the connection structure of the filter press assembly of this utility model;

[0030] Figure 8 This is a schematic diagram of the filter press structure of this utility model;

[0031] Figure 9 This is a schematic diagram of the circuit model of the harmless resource utilization equipment for oily sludge of this utility model.

[0032] In the diagram: 1 Equipment frame, 2 Sludge mixing tank, 3 Oil scraping assembly, 4 Oil collection tank, 5 Filter press assembly, 6 Mixing system, 7 Oil guide port, 8 Oil guide plate, 9 Electric push rod, 10 Sludge outlet, 11 Flip cover assembly, 12 Filter press, 101 First screw, 102 First motor, 103 Oil scraper, 201 Mixing motor, 202 Mounting plate, 203 Mixing shaft, 204 Horizontal support, 205 Mixing rotary blade, 301 Lateral movement. Plate, 302 connecting rod, 303 sealing plate, 304 second screw, 305 second motor, 401 flip cover plate, 402 baffle support rod, 403 support motor, 404 rubber wheel, 501 fixing plate, 502 third motor, 503 third screw, 504 U-shaped bracket, 505 filter press plate, 601 filter hole, 602 side cover plate, 603 slot plate, 604 rotating shaft bracket, 605 threaded rod, 606 knob block. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-8This equipment for the harmless resource utilization treatment of oily sludge includes a frame 1, a sludge mixing tank 2, an oil scraping assembly 3, an oil collection tank 4, and a filter press assembly 5. The sludge mixing tank 2 is fixedly connected inside the frame 1. An oil scraping assembly 3 is installed at the upper end of the sludge mixing tank 2 to scrape floating oil stains towards the oil collection tank 4. A mixing system 6 is installed inside the sludge mixing tank 2 to mix sludge, water, and chemicals. An oil guide port 7 is located on one side of the upper end of the sludge mixing tank 2 to push floating oil out of the tank. A sealing assembly is connected to the oil guide port 7 to prevent sludge water from flowing out of the tank during mixing. An oil guide plate 8 is fixedly connected to the outer wall of the sludge mixing tank 2 below the oil guide port 7 to guide the oil stains towards... The equipment is inclined downwards, and an oil collection tank 4 is located below the oil guide plate 8. The oil collection tank 4 is used to collect oil. The oil collection tank 4 is fixedly connected to the equipment frame 1 on one side of the sludge mixing tank 2. Electric push rods 9 are fixedly connected to the equipment frame 1 on both sides of the oil collection tank 4. The electric push rods 9 can lift one end of the equipment frame to facilitate the discharge of sludge from the sludge mixing tank 2. A sludge outlet 10 is opened on one side of the lower end of the sludge mixing tank 2 to discharge the separated sludge. A flip-top assembly 11 is installed at the sludge outlet 10. During the sludge-water mixing process, the sludge outlet 10 can be closed by the flip-top assembly 11. A filter press 12 is located below the sludge outlet 10. The filter press 12 is fixedly connected to one side of the equipment frame 1. A filter press assembly 5 is installed at the upper end of the filter press 12. The filter press assembly 5 is used to squeeze and dewater the sludge in the filter press 12.

[0035] The workflow of this utility model is as follows:

[0036] First, oily sludge is added to sludge mixing tank 2, and clean water is poured into sludge mixing tank 2. The mixing system 6 is started to mix the sludge. During the mixing process, chemical substances are added to sludge mixing tank 2. After mixing is completed, the sludge-water mixture is allowed to stand, allowing the oil in the sludge to float on the water surface, thus separating the sludge from the oil and water. Then, the oil guide port 7 is opened through the sealing component, and the oil scraping component 3 is started at the same time. The oil scraping component 3 pushes the oil on the water surface to the oil guide port 7, and the oil is pushed out of sludge mixing tank 2 through the oil guide port 7. The flowing oil falls onto the oil guide plate 8, and then flows along the oil guide plate 8. Plate 8 flows downward into the oil collection tank 4. After the oil recovery is completed, the excess sewage in the sludge mixing tank 2 is extracted. Then, the electric push rod 9 extends outward and lifts one side of the equipment frame 1, causing the bottom of the sludge mixing tank 2 to tilt towards the sludge outlet 10. Then, the sludge outlet 10 is opened through the flip-top assembly 11, and the sludge is discharged through the sludge outlet 10. The discharged sludge enters the filter press 12, and the filter press assembly 5 is started to achieve sludge dewatering. After sludge dewatering, a sludge cake is obtained. The obtained sludge cake can be used to cultivate culture medium and can be reused.

[0037] In one embodiment, the oil scraping assembly 3 includes a first screw 101, a first motor 102, and an oil scraper 103. The first screw 101 is rotatably connected to the equipment frame 1 on both sides of the sludge mixing tank 2. The two ends of the oil scraper 103 are threaded to the first screw 101, and the middle part of the oil scraper 103 is slidably connected to the opening at the upper end of the sludge mixing tank 2. One end of the first screw 101 is connected to the first motor 102, and the first motor 102 is fixedly connected to the equipment frame 1. When performing the oil scraping operation, the first motor 102 is started, and the first motor 102 drives the first screw 101 to rotate. The first screw 101 drives the oil scraper 103 to slide from one side of the sludge mixing tank 2 to the other side. During this process, the oil on the surface of the sewage is pushed to the oil guide port 7 by the oil scraper 103, and the oil is discharged through the oil guide port 7.

[0038] In one embodiment, the stirring system 6 includes a stirring motor 201, a mounting plate 202, a stirring shaft 203, a cross support 204, and stirring blades 205. The mounting plate 202 is fixedly connected to the equipment frame 1 below the sludge mixing tank 2. The stirring motor 201 is fixedly connected to the bottom of the mounting plate 202. The stirring shaft 203 is fixedly connected to the end of the rotating shaft of the stirring motor 201. The stirring shaft 203 passes through the mounting plate 202 and is rotatably connected to the sludge mixing tank 2. The stirring shaft 203 is located inside the sludge mixing tank 2. Several stirring blades 205 are fixedly connected to the top. The top end of the stirring shaft 203 is rotatably connected to one end of the horizontal support 204. The other end of the horizontal support 204 is fixedly connected to one side of the inner wall of the sludge mixing tank 2. In actual operation, the stirring motor 201 is started, and the stirring motor 201 drives the stirring shaft 203 to rotate. The stirring shaft 203 drives the stirring blades 205 to rotate. The stirring blades 205 cut and crush the sludge, so that the sludge can be completely mixed in the water. Because oil is lighter than water, the oil floats on the surface of the water.

[0039] In this utility model, the stirring motor 201 is selected as follows:

[0040] Many factors influence stirring power, including structural factors such as the diameter and width of the impeller, its tilt angle, and rotational speed; and the characteristics of the material being stirred, such as its density and viscosity. This paper calculates stirring power based on homogeneous stirring, using the following formula:

[0041] P = N P ρn 3 d 5 (2.1)

[0042] In the formula, P—stirring power, W; N P —Stirring power rating; ρ—Specific gravity of medium, kg / m³ 3 n—stirring speed, r / s; d—stirring diameter, m.

[0043] The stirring power coefficient varies with the flow state and the shape and size of the stirring equipment. The calculation for the inclined impeller without baffles by Nagata Shinji is as follows:

[0044]

[0045] In the formula, R e —Agitation Reynolds number; θ—Agitator tilt angle, °; b—Agitator blade width, m; d—Agitator diameter, m; D—Tank diameter, m; η—Slurry annual, Pa.s.

[0046] The known conditions are shown in Table 1.

[0047] Table 1. Known Relevant Parameters

[0048]

[0049]

[0050] From formulas (2.1) and (2.2), the stirring power is 598.7W.

[0051]

[0052] In equation (2.3), T represents torque in Nm; P represents power in kW; and n represents rotational speed in r / min. From the calculated power value, the required torque for stirring is 31.7 Nm. Based on the motor selection manual, a geared motor with a power of 1400 W, a reduction ratio of 11, and model YS633-4 was ultimately selected.

[0053] In one embodiment, the sealing assembly includes a transverse plate 301, connecting rods 302, a sealing plate 303, a second screw 304, and a second motor 305. The second screw 304 is rotatably connected to both sides of the equipment frame 1. The mounting plate 202 is threaded onto the second screw 304 at both ends. One end of the second screw 304 is connected to the second motor 305, which is fixedly connected to the equipment frame. Several connecting rods 302 are fixedly connected to one side of the transverse plate 301. The other end of the connecting rod 302 is fixedly connected to the sealing plate 303. The sealing plate 303 is closed and connected to the outside of the oil guide port 7, and a sealing strip is provided on the outer edge of the oil guide port 7. When it is necessary to open the oil guide port 7, the second motor 305 is started. The second motor 305 drives the second screw 304 to rotate. The second screw 304 drives the transverse plate 301 to slide horizontally. The transverse plate 301 drives the sealing plate 303 away from the oil guide port 7 through the connecting rod 302, so that the oil can flow out from the oil guide port 7.

[0054] In one embodiment, the flip-top assembly 11 includes a flip-top plate 401, a baffle support rod 402, a support motor 403, and a rubber wheel 404. The flip-top plate 401 is hinged to the bottom of the sludge mixing tank 2 on one side of the sludge outlet 10. The flip-top plate 401 is closed and connected to the bottom of the sludge outlet 10. Support plates are fixedly connected to the equipment frame 1 on both sides of the sludge outlet 10. The support motor 403 is fixedly connected to the outer surface of the support plate. The shaft of the support motor 403 passes through the support plate and is connected to the baffle support rod 404. 02 One end is fixedly connected, and the other end of the baffle support rod 402 is rotatably connected to a rubber wheel 404. The rubber wheel 404 is in contact with the bottom of the flip cover 401. When sludge needs to be discharged, the support motor 403 is started. The support motor 403 drives the baffle support rod 402 to flip. The other end of the baffle support rod 402 drives the rubber wheel 404 to leave the flip cover 401. The flip cover 401 can flip downwards when there is no support, thereby opening the sludge outlet 10 so that the sludge can be discharged through the sludge outlet 10.

[0055] In one embodiment, the filter press assembly 5 includes a fixed plate 501, a third motor 502, a third screw 503, a U-shaped bracket 504, and a filter press plate 505. The fixed plate 501 is fixedly connected to one side of the equipment frame 1. Two sets of third motors 502 are fixedly connected to the fixed plate 501. The rotating shaft of the third motor 502 passes through the fixed plate 501 and is fixedly connected to the third screw 503. The top end of the U-shaped bracket 504 is threadedly connected to the third screw 503, and the lower end of the U-shaped bracket 504 is fixedly connected to the filter press plate 505. The filter press plate 505 is slidably connected inside the filter press box 12. When performing dewatering operation, the third motor 502 is started, and the third motor 502 drives the third screw 503 to rotate. The third screw 503 drives the U-shaped bracket 504 to move downward, and the U-shaped bracket 504 drives the filter press plate 505 to squeeze and dewater the sludge in the filter press box 12.

[0056] In one embodiment, the filter press 12 has several filter holes 601 at its lower end for filtering out the squeezed wastewater. A sludge cake outlet is provided on one side of the filter press 12 for removing the dewatered sludge cake. A side cover plate 602 is closed and connected to the outside of the sludge cake outlet. Several slot plates 603 are fixedly connected to both sides of the edge of the side cover plate 602. Slots are provided on the slot plates 603. Several rotating shaft brackets 604 are fixedly connected to both sides of the filter press 12. Threaded rods 605 are rotatably connected to the rotating shaft brackets 604. The threaded rods 605 are inserted into the slots, and a knob block 606 is threadedly connected to the end of the threaded rod 605. The knob block 606 abuts against the slot plate 603. By rotating the knob block 606 and rotating the threaded rod 605, the side cover plate 602 can be removed.

[0057] The control system in this utility model is as follows:

[0058] The circuit of the oily sludge harmless resource utilization treatment equipment consists of three main parts: a human-machine interface display system, a control system, and a power system. The human-machine interface system transmits the operator's control commands to the control system via UART. The control system then parses the control signals and controls the corresponding power components to achieve operation. After the operation is completed, the control system returns the system status to the human-machine interface system, as shown in the attached diagram. Figure 9 The model shown.

[0059] The detailed plan is as follows:

[0060] (1) Microcontroller MCU

[0061] The microcontroller is the core of the control system, and selecting a suitable microcontroller is a necessary condition for implementing the control system. The control system needs to connect to up to eight stepper motors, two electric actuators, an LCD display, and four limit switches. Based on the actual requirements of the project, the STM32F103ZET6 was chosen as the main controller. This chip is a 144-pin, LQFP surface-mount package, integrating 512Kb of Flash and 64Kb of ROM, supporting a maximum clock frequency of 72MHz, and integrating rich peripherals, supporting five USART communication interfaces and eight TIMs. Therefore, this microcontroller basically meets the needs of the crude oil processing unit and leaves considerable room for future additions of functions. To simplify the design, the Zhengdian Atomic Elite development board with its onboard STM32F103ZET6 was directly selected for development. This development board provides most of the I / O interfaces and rich peripheral circuit support.

[0062] (2) Human-computer interaction system

[0063] In modern human-computer interaction, displays and buttons are the most commonly used devices. To facilitate operation and provide a better user experience, this design uses a DC10600M010 serial port screen as the display device. This screen is a 10.1-inch medical-grade IPS serial port screen with a resolution of 1024*600. Using this screen simplifies the design of the graphical interface and is stable and reliable. It supports voltage input from 4.5 to 30 volts, uses RS232 or TTL level communication, supports audio, video and image playback, integrates 128Mbit of storage space and supports TF memory card expansion.

[0064] (3) Data storage and communication

[0065] After setting parameters via the serial port screen, data can be transmitted to the MCU using a TTL level serial port. The MCU parses the parameters and stores them in Flash memory, which can be retrieved after power failure. Images, audio, and video from the human-machine interface can all be stored on the serial port screen's memory card.

[0066] (4) Motor control

[0067] a) Stepper motor

[0068] This design uses six 42-step motors and two 57-step motors. Both types of stepper motors are two-phase four-wire structures. The control part of the stepper motor driver adopts a common cathode connection. Each driver requires three I / O ports, namely EN+, Dir+, and Pulse+, which control the enable, direction, and pulse of the driver, respectively. Two motors are grouped together, and the control signals are connected in parallel, requiring a total of 12 I / O ports. Table 2 shows the I / O ports allocated by the MCU for the motor driver.

[0069] Table 2 shows the I / O allocated by the MCU for the motor drive.

[0070]

[0071] The main parameters for stepper motor control are speed, direction of movement, and position. Speed ​​control is essentially pulse frequency control. Pulses can be generated by toggling the I / O port or by using TIM to generate PWM, which can drive the stepper motor. The current position can be calculated by counting pulses within the program. The direction of movement can be changed by controlling Dir+.

[0072] b. Stirring motor 201

[0073] Mixing machinery is designed with a certain margin in mind based on the requirements of the operating conditions. However, in actual use, mixers do not necessarily operate at maximum speed; they often operate under non-full load conditions. Traditional mixers typically do not adjust speed or use mechanical speed regulation. Mechanical speed regulation increases mixer wear and tear, causes the mixer to operate in a fluctuating state, and results in the equipment being overpowered, which is very uneconomical. A frequency converter controls the speed of an AC motor, and this speed regulation method is highly efficient and energy-saving, surpassing any previous speed regulation method. Therefore, by installing a frequency converter on the mixer, many problems existing in the use of traditional mixers can be solved once and for all, and the investment can be recovered through energy savings. Therefore, the mixing motor 201 of this crude oil sludge treatment unit uses a Delta 0.75kW heavy-duty vector high-performance frequency converter for control.

[0074] c. Electric push rod 9

[0075] The electric linear actuator 9 is a DC motor that can be controlled simply by switching a relay on and off.

[0076] d. Limit switch

[0077] The device uses four limit switches. The MCU uses an external interrupt mode to capture the rising and falling edges to determine whether the motor has moved to the limit switch. Since the limit switch signal is 5 volts, a 5-volt-tolerant pin needs to be selected on the MCU.

[0078] e. Serial port screen UI design

[0079] The serial port display was developed using the DaCai VisualTFT host computer and mainly consists of two manual motor control modes and an automatic mode. The manual mode allows individual control of each motor's parameters, such as setting speed, maximum position, minimum position, and direction of movement. The automatic mode automatically processes crude oil according to pre-set steps.

[0080] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0081] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A harmless resource utilization treatment device for oily sludge, comprising a frame (1), a sludge mixing tank (2), an oil skimming assembly (3), an oil collection tank (4), and a filter press assembly (5), characterized in that: A sludge mixing tank (2) is fixedly connected inside the equipment frame (1). An oil scraping assembly (3) is provided at the upper end of the sludge mixing tank (2). A mixing system (6) is installed inside the sludge mixing tank (2). An oil guide port (7) is provided on one side of the upper end of the sludge mixing tank (2). A sealing assembly is connected to the oil guide port (7). An oil guide plate (8) is fixedly connected to the outer wall of the sludge mixing tank (2) at the lower end of the oil guide port (7). The oil guide plate (8) is inclined downward. An oil collection tank (4) is provided below the oil guide plate (8). An oil collection tank (4) is fixedly connected to the equipment frame (1) on one side of the sludge mixing tank (2). Electric push rods (9) are fixedly connected to the equipment frame (1) on both sides of the oil collection tank (4). A sludge outlet (10) is opened on one side of the lower end of the sludge mixing tank (2). A flip-top assembly (11) is installed at the sludge outlet (10). A filter press (12) is set below the sludge outlet (10). The filter press (12) is fixedly connected to one side of the equipment frame (1). A filter press assembly (5) is set at the upper end of the filter press (12).

2. The oily sludge harmless resource utilization treatment equipment according to claim 1, characterized in that: The oil scraping assembly (3) includes a first screw (101), a first motor (102), and an oil scraper (103). The first screw (101) is rotatably connected to the equipment frame (1) on both sides of the sludge mixing tank (2). The two ends of the oil scraper (103) are threaded to the first screw (101). The middle part of the oil scraper (103) is slidably connected to the opening at the upper end of the sludge mixing tank (2). One end of the first screw (101) is connected to the first motor (102). The first motor (102) is fixedly connected to the equipment frame (1).

3. The oily sludge harmless resource utilization treatment equipment according to claim 1, characterized in that: The stirring system (6) includes a stirring motor (201), a mounting plate (202), a stirring shaft (203), a horizontal support (204), and stirring blades (205). The mounting plate (202) is fixedly connected to the equipment frame (1) below the sludge mixing tank (2). The stirring motor (201) is fixedly connected to the bottom of the mounting plate (202). The stirring shaft (203) is fixedly connected to the end of the rotating shaft of the stirring motor (201). The stirring shaft (203) passes through the mounting plate (202) and is rotatably connected to the sludge mixing tank (2). Several stirring blades (205) are fixedly connected to the stirring shaft (203) inside the sludge mixing tank (2). The top end of the stirring shaft (203) is rotatably connected to one end of the horizontal support (204), and the other end of the horizontal support (204) is fixedly connected to one side of the inner wall of the sludge mixing tank (2).

4. The oily sludge harmless resource utilization treatment equipment according to claim 3, characterized in that: The sealing assembly includes a transverse plate (301), a connecting rod (302), a sealing plate (303), a second screw (304), and a second motor (305). The second screw (304) is rotatably connected to both sides of the equipment frame (1). The two ends of the mounting plate (202) are threaded onto the second screw (304). One end of the second screw (304) is connected to the second motor (305), which is fixedly connected to the equipment frame. Several connecting rods (302) are fixedly connected to one side of the transverse plate (301), and the other end of the connecting rod (302) is fixedly connected to the sealing plate (303). The sealing plate (303) is closedly connected to the outside of the oil guide port (7), and a sealing strip is provided on the outer edge of the oil guide port (7).

5. The oily sludge harmless resource utilization treatment equipment according to claim 1, characterized in that: The flip-top assembly (11) includes a flip-top plate (401), a baffle support rod (402), a support motor (403), and a rubber wheel (404). The flip-top plate (401) is hinged to the bottom of the sludge mixing tank (2) on one side of the sludge outlet (10). The flip-top plate (401) is closed and connected to the bottom of the sludge outlet (10). Support plates are fixedly connected to the equipment frame (1) on both sides of the sludge outlet (10). The support motor (403) is fixedly connected to the outer side of the support plate. The shaft of the support motor (403) passes through the support plate and is fixedly connected to one end of the baffle support rod (402). The other end of the baffle support rod (402) is rotatably connected to the rubber wheel (404). The rubber wheel (404) is in contact with the bottom of the flip-top plate (401).

6. The oily sludge harmless resource utilization treatment equipment according to claim 1, characterized in that: The filter press assembly (5) includes a fixed plate (501), a third motor (502), a third screw (503), a U-shaped bracket (504), and a filter press plate (505). The fixed plate (501) is fixedly connected to one side of the equipment frame (1). Two sets of third motors (502) are fixedly connected to the fixed plate (501). The rotating shaft of the third motor (502) passes through the fixed plate (501) and is fixedly connected to the third screw (503). The top end of the U-shaped bracket (504) is threadedly connected to the third screw (503). The lower end of the U-shaped bracket (504) is fixedly connected to the filter press plate (505). The filter press plate (505) is slidably connected inside the filter press box (12).

7. The oily sludge harmless resource utilization treatment equipment according to claim 1, characterized in that: The filter press (12) has several filter holes (601) at its lower end. The filter press (12) has a mud cake outlet on one side. A side cover plate (602) is closed and connected to the outside of the mud cake outlet. Several slot plates (603) are fixedly connected to the two sides of the edge of the side cover plate (602). Slots are opened on the slot plates (603). Several rotating shaft brackets (604) are fixedly connected to both sides of the filter press (12). A threaded rod (605) is rotatably connected to the rotating shaft bracket (604). The threaded rod (605) is inserted into the slot. A knob block (606) is threadedly connected to the end of the threaded rod (605). The knob block (606) abuts against the slot plate (603).

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