An environmental protection pretreatment device for waste water of a scrapped automobile

Abstract

The application discloses an environment-friendly pretreatment device for waste water of scrapped cars and relates to the technical field of waste water pretreatment devices. The device comprises a mounting bottom plate, and a hierarchical standing assembly for stratified purification of car waste water is arranged on the top of the mounting bottom plate. The device can first divide the originally deep oil floating pool into multiple stratified pools through the multiple stratified pools when the mixed waste water enters the corresponding stratified pools through multiple shunt pipes, so that the oil droplet rising path is shortened, and thus the oil stain in the waste water can be purified more thoroughly in the multiple stratified pools relative to the originally deep oil floating pool in the same time. When the stratification of the oil stain in the waste water and the waste water is completed, the top of the multiple leak hole plates is respectively in contact with the position where the multiple oil layers are lowest, and a complete plate-shaped structure is formed between the leak hole plates and the sliding plates. The driving motor is started to move the oil stain to the inside of the mixing pipe, so that the automatic collection of the oil stain is realized.

Description

Technical Field

[0001] This invention relates to the field of wastewater pretreatment equipment technology, specifically to an environmentally friendly pretreatment equipment for wastewater from scrapped automobiles. Background Technology

[0002] Wastewater from scrapped vehicles is industrial wastewater generated during the recycling, dismantling, cleaning, repair, and parts processing of scrapped vehicles. It contains a variety of pollutants and has a complex composition with certain environmental hazards. The environmental pretreatment device for wastewater from scrapped vehicles is a specialized device designed to address its complex water quality characteristics, which contain a large amount of suspended solids, oil, heavy metals, and chemical agents. It removes most of the pollutants and reduces the load on subsequent treatment through core processes such as physical separation, gravity sedimentation, and air flotation. The environmental pretreatment device for wastewater from scrapped vehicles is a modular system specifically designed to solve its problems of high impurity levels, high oil content, and large fluctuations in water quality. The core of the system is to achieve the initial removal of pollutants through physical interception, gravity separation, and bubble adsorption.

[0003] In existing environmental pretreatment processes for wastewater from scrapped vehicles, the structure of the vehicles themselves, the dismantling process, and the characteristics of their components result in wastewater containing a large amount of oil. This oil is complex in form and diverse in composition, making it difficult to clean. Most existing environmental pretreatment devices for automotive wastewater use oil-floating tanks to separate water and oil. The essence of oil-water separation is utilizing the density difference between oil and water (oil density < water density), causing oil droplets to float upwards due to buoyancy and eventually accumulate on the surface to form an oil layer. The buoyancy efficiency is determined by both the oil droplet's rising velocity and the hydraulic conditions of the tank. According to Stokes' law, the formula for the rising velocity of oil droplets in still water is: ,in, The rising velocity of the oil droplet is m / s. The densities of water and oil are kg / m³, respectively, and g is the acceleration due to gravity in m / s². Let the oil droplet diameter be m. The dynamic viscosity of water is Pa·s. To ensure the wastewater treatment capacity, existing oil flotation tanks are mostly large-volume, deep single-layer treatment tanks. The deeper the water, the longer the oil slick takes to float to the surface. However, in order to enhance the wastewater treatment rate, most existing wastewater treatment facilities actually only allow the wastewater to stay in the flotation tank for 1-2 hours, which is far less than the time required for small oil droplets to float. As a result, a large number of small oil droplets are discharged with the water flow before they have a chance to float, and the separation efficiency is naturally low. This reduces the efficiency of the environmental pretreatment device for wastewater from scrapped vehicles in separating polluting oil, causing environmental pollution.

[0004] Therefore, we propose an environmentally friendly pretreatment device for wastewater from scrapped vehicles to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly pretreatment device for wastewater from scrapped vehicles, in order to solve the problem of low separation efficiency of traditional single-layer treatment tanks for wastewater from scrapped vehicles containing a large amount of oil, as mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly pretreatment device for wastewater from scrapped vehicles, comprising a mounting base plate, a tiered settling assembly for stratifying and purifying the wastewater in layers is disposed on the top of the mounting base plate, a secondary purification assembly is disposed on the outer surface of the tiered settling assembly, the tiered settling assembly includes multiple stratified tanks, perforated plates are disposed between the relative inner walls of the multiple stratified tanks, sliding plates are slidably connected to the inner walls of the multiple perforated plates, and lifting baffles for collecting floating oil are slidably connected to the outer surfaces of the multiple perforated plates. The floating oil in the wastewater moves upward to the surface of the wastewater under static action. The multiple perforated plates are combined with multiple sliding plates to form a sealing plate. The multiple perforated plates move under the drive of their corresponding drive devices to collect the floating oil. The multiple lifting baffles can prevent the floating oil from overflowing. The outer surface of the graded settling component is also provided with a mixing component for mixing wastewater with inorganic demulsifier. The mixing component includes a drainage pipe. The bottom end of the drainage pipe is fixedly connected to a first mixing chamber. The top of the first mixing chamber is fixedly connected to a sealed tank for storing inorganic demulsifier.

[0007] Preferably, the grading and settling assembly further includes multiple threaded rods, one end of each threaded rod is fixedly mounted with a gear, the outer surfaces of the multiple gears are meshed with a belt, a drive motor is fixedly mounted on the outer surface of the bottom grading pool through an auxiliary plate, push plates are threadedly sleeved on the outer surfaces of the multiple threaded rods, and three electric telescopic rods are evenly arranged on the inner top surface of the multiple push plates.

[0008] Preferably, three adjacent electric telescopic rods are grouped together, and a lifting plate is fixed between the bottom ends of each group of electric telescopic rods. A forward and reverse motor is fixedly installed near one end between the relative inner walls of the multiple perforated plates by screws. A lead screw is fixedly installed at the output end of the multiple forward and reverse motors. A limit tube is fixed near one side between the relative inner walls of the multiple perforated plates. A stepper motor is fixedly installed at the bottom of the multiple perforated plates by screws.

[0009] Preferably, the output ends of the multiple stepper motors are all fixedly connected to threaded pipes, the inner walls of the multiple lifting baffles are all slidably connected to first sealing elements, the outer surfaces of the multiple first sealing elements are provided with two elastic elements through auxiliary rods, the outer surfaces of the multiple stratification pools are provided with second sealing elements, the outer surfaces of the multiple stratification pools are fixedly connected to each other through auxiliary pipes and a mixing pipe is provided, and an oil collection pool is provided on the top of the mounting base plate.

[0010] Preferably, the mixing assembly further includes a hydraulic rod, a piston is fixedly installed at the bottom end of the hydraulic rod, a one-way valve is provided on the outer surface of the sealed tank near the bottom end, one end of the first mixing chamber is fixedly connected to a conveying pipe, the bottom end of the conveying pipe is fixedly connected to a second mixing chamber, the bottom of the second mixing chamber is fixedly connected to a connecting pipe, and the outer surface of the connecting pipe near the bottom end is fixedly connected to multiple branch pipes.

[0011] Preferably, in the plurality of stratified pools, the outer surfaces of each two adjacent stratified pools are fixedly connected, the top of the topmost stratified pool is coupled to a filter pool, the two ends of the plurality of threaded rods respectively extend movably through to the opposite sides of the plurality of stratified pools, the output shaft of the drive motor is fixedly connected to the outer surface of the gear located at the lowest point, the opposite sides of the outer surfaces of the plurality of push plates are slidably connected to the opposite inner walls of the plurality of stratified pools, and the bottoms of the plurality of lifting plates are fixedly connected to the tops of the plurality of perforated plates.

[0012] Preferably, both ends of the lead screw extend movably to the opposite side of the slide plate, both ends of the limiting tube extend movably to the opposite side of the slide plate, the outer surface of the threaded tube is threadedly connected to the inner wall of the lifting baffle, both ends of the threaded tube extend movably to the opposite side of the perforation plate, each pair of the multiple elastic elements forms a group, one end of each group of elastic elements is fixedly connected to the outer surface of the multiple lifting baffles, the other end of each group of elastic elements is fixedly connected to the outer surface of the multiple first sealing elements, and the bottom end of the mixing tube is fixedly extended into the interior of the oil collection tank.

[0013] Preferably, one end of the diversion pipe is fixedly inserted into the interior of the filter tank, the outer surface of the hydraulic rod is fixedly connected to the outer surface of the sealed tank through an auxiliary frame, the piston is disposed inside the sealed tank, and one end of each of the multiple diversion pipes is fixedly inserted into the interior of multiple stratified tanks.

[0014] Preferably, the secondary purification component includes an output pipe, the multiple ends of which are respectively fixedly inserted into the interior of multiple stratified pools, the outer surface of the output pipe is provided with multiple first electromagnetic switch valves, the outer surface of the output pipe is fixedly connected to multiple feed pipes, the outer surface of each of the multiple feed pipes is provided with a second electromagnetic switch valve, and the outer surface of each of the multiple stratified pools is fixedly installed with a delivery pump by screws.

[0015] Preferably, the input ends of the plurality of conveying pumps are all fixedly connected to oil inlet pipes, the top ends of the plurality of oil inlet pipes are respectively fixedly connected to the bottom ends of the plurality of lead pipes, the output ends of the plurality of conveying pumps are all fixedly connected to lead pipes, the bottom ends of the plurality of lead pipes are all fixedly connected to oil outlet pipes, the bottom ends of the plurality of oil outlet pipes are all fixedly penetrated into the interior of the oil collection tank, and the inner wall of the output pipe is provided with a plurality of trace oil detectors in the water.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When the mixed wastewater enters its corresponding stratification tank through multiple diversion pipes, the original deep oil-floating tank is first divided into multiple stratification tanks, thus shortening the path for oil droplets to rise. This allows the multiple stratification tanks to purify the oil in the wastewater more thoroughly than the original deep oil-floating tank within the same time frame. After the oil and wastewater have separated into layers, the tops of multiple perforated plates are positioned to contact the lowest points of the oil layers, and the perforated plates and sliding plates form a complete plate structure. The drive motor is then activated to move the oil into the mixing pipe, achieving automatic oil collection. This solves the problem of low separation efficiency in traditional single-layer treatment tanks for wastewater from scrapped vehicles containing large amounts of oil.

[0018] 2. Since the wastewater from scrapped vehicles contains a large amount of emulsified oil, the filtered wastewater is first pumped through a water pump installed in the filtration tank and then transported to the interior of the first mixing chamber through a diversion pipe. Both the first and second mixing chambers are composed of mixing baffles evenly distributed vertically, which are designed to allow the wastewater to flow back and forth within the mixing chamber, improving the subsequent mixing effect. The mixing chamber is also equipped with perforated circular plates to evenly disperse the wastewater. Through the action of the mixing components, the wastewater from scrapped vehicles and the inorganic demulsifier are fully mixed, thereby breaking down the stable emulsified oil system in the wastewater and creating conditions for subsequent oil-water separation and wastewater treatment to meet standards.

[0019] 3. After the oil in the multiple stratified tanks has been separated, the wastewater stored in the multiple stratified tanks flows outward through the output pipe to the external collection equipment. The oil content in the wastewater entering the output pipe is detected by a trace oil detector. When the detector detects a high oil content in the wastewater entering the output pipe, the corresponding first solenoid valve is closed, and the corresponding second solenoid valve is opened. The transfer pump is started to transport the oil to the oil collection tank, realizing the secondary separation of oil in automobile wastewater and further improving the purification efficiency of oil in wastewater pretreatment. Attached Figure Description

[0020] Figure 1 This is a front perspective view of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0021] Figure 2 This is a side perspective view of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0022] Figure 3 This is a cross-sectional perspective view of the mixing component of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0023] Figure 4 This is a perspective view of the diversion pipe portion of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0024] Figure 5 This is a perspective view of the staged settling component of an environmentally friendly pretreatment device for wastewater from scrapped automobiles according to the present invention.

[0025] Figure 6 This is a perspective view of the pusher plate portion of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8 For the present invention Figure 6 Enlarged view at point B in the middle;

[0028] Figure 9 This is a three-dimensional view of the screw section structure of an environmentally friendly pretreatment device for wastewater from scrapped automobiles according to the present invention.

[0029] Figure 10 This is a sectional perspective view of the mixing pipe portion of an environmentally friendly pretreatment device for wastewater from scrapped automobiles according to the present invention.

[0030] Figure 11 For the present invention Figure 10 Enlarged view at point C;

[0031] Figure 12 This is a perspective view of the secondary purification component of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0032] Figure 13 This is a perspective view of the output pipe portion of an environmentally friendly pretreatment device for wastewater from scrapped vehicles according to the present invention.

[0033] Figure 14 This is a three-dimensional view of the perforated plate portion of an environmentally friendly pretreatment device for wastewater from scrapped automobiles according to the present invention.

[0034] Figure 15 This is a perspective view of the first sealing component of an environmentally friendly pretreatment device for wastewater from scrapped automobiles according to the present invention.

[0035] In the picture:

[0036] 1. Mounting base plate; 2. Filter tank; 3. Mixing assembly; 301. Drainage pipe; 302. First mixing chamber; 303. Sealed tank; 304. Hydraulic rod; 305. Piston; 306. Check valve; 307. Conveying pipe; 308. Second mixing chamber; 309. Connecting pipe; 310. Diverting pipe; 4. Grading and settling assembly; 401. Layered tank; 402. Threaded rod; 403. Gear; 404. Belt; 405. Drive motor; 406. Push plate; 407. Electric telescopic rod; 408. Lifting plate; 409. Perforated plate; 410. Sliding plate 411. Plate; 412. Forward and reverse motor; 413. Lead screw; 414. Limiting tube; 415. Lifting baffle; 416. Stepper motor; 417. Threaded tube; 418. First seal; 419. Elastic element; 420. Second seal; 421. Mixing tube; 422. Oil collection tank; 5. Secondary purification assembly; 501. Output tube; 502. First electromagnetic switch valve; 503. Inlet tube; 504. Second electromagnetic switch valve; 505. Transfer pump; 506. Oil inlet pipe; 507. Inlet pipe; 508. Oil outlet pipe; 509. Trace oil detector in water. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-15This invention provides a technical solution: an environmentally friendly pretreatment device for wastewater from scrapped vehicles, comprising a mounting base plate 1, a stratification and settling assembly 4 for stratifying and purifying the wastewater in layers on the top of the mounting base plate 1, a secondary purification assembly 5 on the outer surface of the stratification and settling assembly 4, the stratification and settling assembly 4 including multiple stratified pools 401, perforated plates 409 being provided between the relative inner walls of the multiple stratified pools 401, sliding plates 410 being slidably connected to the inner walls of the multiple perforated plates 409, and lifting baffles 414 for collecting floating oil being slidably connected to the outer surfaces of the multiple perforated plates 409. The floating oil in the multiple stratified pools 401 moves upward to the surface of the wastewater under static action, the multiple perforated plates 409 and the multiple sliding plates 410 are respectively combined to form sealing plates, the multiple perforated plates 409 are respectively driven by their corresponding driving devices to move, thereby collecting the floating oil, the multiple lifting baffles 414 can prevent the floating oil from overflowing, and a mixing assembly for mixing wastewater with an inorganic demulsifier is also provided on the outer surface of the stratification and settling assembly 4. 3. The mixing component 3 includes a drain pipe 301, the bottom end of which is fixedly connected to a first mixing chamber 302. The top of the first mixing chamber 302 is fixedly connected to a sealed container 303 for storing inorganic demulsifier. The mixing component 3 also includes a hydraulic rod 304, the bottom end of which is fixedly mounted with a piston 305. A one-way valve 306 is provided on the outer surface of the sealed container 303 near the bottom end. One end of the first mixing chamber 302 is fixedly connected to a delivery pipe 307, the bottom end of which is fixedly connected to... A second mixing chamber 308 is fixedly connected to the bottom of the second mixing chamber 308, and a connecting pipe 309 is fixedly connected to the bottom of the connecting pipe 309. Multiple diversion pipes 310 are fixedly connected to the outer surface of the connecting pipe 309 near the bottom. One end of the diversion pipe 301 is fixedly inserted into the interior of the filter tank 2. The outer surface of the hydraulic rod 304 is fixedly connected to the outer surface of the sealed tank 303 through an auxiliary frame. The piston 305 is located inside the sealed tank 303. One end of each of the multiple diversion pipes 310 is fixedly inserted into the interior of multiple stratified tanks 401.

[0039] In this embodiment, when environmental pretreatment of wastewater from scrapped vehicles is required, the wastewater is first transported to the interior of filter tank 2 via external conveying equipment to remove impurities. Since wastewater from scrapped vehicles contains a large amount of emulsified oil, such as emulsions formed by mixing engine waste oil, lubricating oil, and cutting oil with water, the stability of these emulsified oils depends on surfactants adsorbed on the surface of the oil droplets. These substances form a charged protective film on the outer layer of the oil droplets, preventing them from colliding and aggregating, thus dispersing them evenly in the water as tiny particles and preventing natural stratification, thereby preventing the separation of oil in the wastewater. Therefore, the filtered wastewater is first transported to the interior of the first mixing chamber 302 via a water pump installed in filter tank 2 through a diversion pipe 301. For example, Figure 3As shown, both the first mixing chamber 302 and the second mixing chamber 308 are composed of mixing baffles evenly distributed vertically. Their purpose is to allow the wastewater to flow back and forth within the mixing chamber, improving the subsequent mixing effect. A perforated circular plate is also installed in the mixing chamber to evenly disperse the wastewater. Once the wastewater enters the first mixing chamber 302, the one-way valve 306 is opened, allowing the inorganic demulsifier stored in the sealed tank 303 to be transported downwards into the first mixing chamber 302. After thorough mixing with the wastewater in the first mixing chamber 302, the wastewater is then transported through the conveying pipe 307 to the second mixing chamber 308 for secondary mixing, further ensuring thorough mixing of the wastewater and inorganic demulsifier. The mixed wastewater then enters the connecting pipe 309, and finally... The wastewater is transported through multiple diversion pipes 310 to the interior of multiple stratified tanks 401. Through the action of the mixing component 3, the wastewater from the scrapped vehicle and the inorganic demulsifier are fully mixed, thereby destroying the stable emulsified oil system in the wastewater. When the inorganic demulsifier dissolves into the wastewater, it releases positively charged metal ions, while the protective film on the surface of the emulsified oil droplets is mostly negatively charged. After the positive and negative charges attract and neutralize each other, the oil droplets lose their charge repulsion force, and the barrier that originally prevented aggregation is broken. The inorganic demulsifier forms flocculents with adsorption properties. These flocculents can simultaneously adsorb multiple tiny oil droplets and connect the dispersed oil droplets through bridging, promoting their gradual aggregation. This allows the tiny emulsified oil droplets to aggregate into large, separable oil droplets, creating conditions for subsequent oil-water separation and wastewater treatment to meet standards.

[0040] like Figures 1-2 and Figures 4-11 and Figure 15As shown, an environmentally friendly pretreatment device for wastewater from scrapped vehicles includes a mounting base plate 1. A stratified settling assembly 4 for stratifying and purifying the wastewater is mounted on the top of the mounting base plate 1. A secondary purification assembly 5 is mounted on the outer surface of the stratified settling assembly 4. The stratified settling assembly 4 includes multiple stratified tanks 401. Perforated plates 409 are provided between the relative inner walls of the multiple stratified tanks 401. Sliding plates 410 are slidably connected to the inner walls of the multiple perforated plates 409. Lifting baffles 414 for collecting floating oil are slidably connected to the outer surfaces of the multiple perforated plates 409. Floating oil in the multiple stratified tanks 401 moves upwards to the surface of the wastewater under static action. The multiple perforated plates 409 are combined with the multiple sliding plates 410 to form sealing plates. Driven by its corresponding drive equipment, the component moves to collect floating oil. Multiple lifting baffles 414 prevent floating oil from overflowing. The outer surface of the grading and settling component 4 is also provided with a mixing component 3 for mixing wastewater with inorganic demulsifier. The mixing component 3 includes a drainage pipe 301, the bottom end of which is fixedly connected to a first mixing chamber 302. The top of the first mixing chamber 302 is fixedly connected to a sealed tank 303 for storing inorganic demulsifier. The grading and settling component 4 also includes multiple threaded rods 402, one end of which is fixedly mounted with a gear 403. The outer surfaces of the multiple gears 403 are meshed with belts 404. The outer surface of the bottommost stratification tank 401 is fixedly mounted with a drive motor 405 via an auxiliary plate. Multiple threaded rods 402 have push plates 406 threadedly fitted onto their outer surfaces. Three electric telescopic rods 407 are evenly arranged on the inner top surface of each push plate 406. Three adjacent electric telescopic rods 407 form a group. A lifting plate 408 is fixed between the bottom ends of each group of electric telescopic rods 407. A forward / reverse motor 411 is screwed onto the inner walls of multiple perforated plates 409 near one end. A lead screw 412 is fixedly installed at the output end of each forward / reverse motor 411. A limit tube 413 is fixed onto the inner walls of multiple perforated plates 409 near one side. A stepper motor 415 is screwed onto the bottom of each perforated plate 409. A threaded tube 416 is fixedly connected to the output end of each stepper motor 415. Multiple lifting plates 408... The inner wall of the baffle 414 is slidably connected with a first seal 417. Two elastic elements 418 are provided on the outer surface of each of the multiple first seals 417 via auxiliary rods. Second seals 419 are provided on the outer surface of each of the multiple stratification pools 401. A mixing pipe 420 is fixedly connected between the outer surfaces of the multiple stratification pools 401 via auxiliary pipes. An oil collection pool 421 is provided on the top of the mounting base 1. The outer surfaces of every two adjacent stratification pools 401 are fixedly connected. A filter pool 2 is coupled to the top of the topmost stratification pool 401. The two ends of multiple threaded rods 402 extend movably to the opposite sides of the multiple stratification pools 401. The output shaft of the drive motor 405 is fixedly connected to the outer surface of the gear 403 located at the lowest point.Multiple push plates 406 have opposite outer surfaces that are slidably connected to the opposite inner walls of multiple stratified pools 401. Multiple lifting plates 408 have their bottoms fixedly connected to the tops of multiple perforated plates 409. Both ends of a lead screw 412 extend movably through to the opposite outer surface of a slide plate 410. Both ends of a limiting tube 413 extend movably through to the opposite outer surface of a slide plate 410. The outer surface of a threaded tube 416 is threadedly connected to the inner wall of a lifting baffle 414. Both ends of the threaded tube 416 extend movably through to the opposite outer surface of a perforated plate 409. Multiple elastic elements 418 are grouped in pairs. One end of each group of elastic elements 418 is fixedly connected to the outer surface of multiple lifting baffles 414, and the other end of each group of elastic elements 418 is fixedly connected to the outer surface of multiple first sealing elements 417. The bottom end of a mixing tube 420 extends fixedly through to the interior of an oil collection pool 421.

[0041] In this embodiment, after the mixed wastewater enters the corresponding stratification tanks 401 through multiple diversion pipes 310, it is first left to stand in the stratification tanks 401 for a certain period of time. This allows the oil in the wastewater to float upwards due to density differences and accumulate on the surface of the wastewater. The stratification tanks 401 divide the originally deeper oil-floating pool into multiple stratification tanks 401, thus shortening the path for the oil droplets to rise. Consequently, within the same time frame, the stratification tanks 401 purify the oil in the wastewater more thoroughly than the originally deeper oil-floating pool. After the oil and wastewater have separated, multiple electric telescopic rods 407 are activated to extend or retract, causing the corresponding perforated plates 409 to move upwards or downwards. The plate moves downwards until the tops of the multiple perforation plates 409 contact the lowest points of the multiple oil layers. Then, multiple forward and reverse motors 411 are activated, driving multiple lead screws 412 to rotate, which in turn moves multiple sliding plates 410 along the inner walls of the multiple perforation plates 409. The perforation plates 409 and sliding plates 410 interweave laterally, and the surface of the sliding plates 410 is made of a sealing rubber material. When the perforation plates 409 and sliding plates 410 form a complete plate structure, oil leakage is prevented. The limiting tube 413 limits the sliding plates 410. When the rectangular holes in the perforation plates 409 move to coincide with the solid parts in the sliding plates 410, the following behavior occurs: Figure 6In the state where the perforated plate 409 and the slide plate 410 form a complete plate structure, oil droplets can be prevented from leaking downwards during subsequent oil scraping. Then, the drive motor 405 can be started, causing the corresponding gear 403 to rotate, which in turn drives the outer belt 404 to rotate. This causes the multiple gears 403 coupled to it to rotate, which in turn causes the multiple threaded rods 402 to rotate, thereby driving the multiple slide plates 410 to move along the inner walls of the multiple stratification pools 401 towards the mixing tube 420. In addition, as multiple sliding plates 410 move, they also drive multiple first seals 417 forward. When the multiple first seals 417 move to the position where their outer surfaces contact the inner walls of multiple stratified pools 401, multiple stepper motors 415 are activated to drive multiple threaded tubes 416 to rotate, thereby activating multiple lifting baffles 414 to move upward along the inner walls of multiple perforated plates 409, thus trapping oil stains in the enclosed space formed by the lifting baffles 414, perforated plates 409, and sliding plates 410. Furthermore, as... Figure 8 As shown, the cross-sections of the positions where the lifting baffle 414 contacts the perforated plate 409 are all T-shaped. This is to allow the lifting baffle 414 to function as a limit while also facilitating its vertical movement. When the lifting baffle 414 moves the first seal 417 upwards to the position corresponding to the second seal 419, the stepper motor 415 is turned off, and then the drive motor 405 is started again to continue moving the multiple lifting baffles 414 forward until they are in close contact with the inner walls of the multiple stratified pools 401. At this point, the multiple first seals 417 are precisely in contact with the multiple second seals 419. For example... Figure 11 As shown, the second seal 419 consists of a spring, a support frame, and a cylindrical sealing plug. One end of each of the two springs is fixedly connected to the outer surface of the stratified pool 401. Additionally, as... Figure 7 As shown, the first seal 417 is composed of a thinner long rod and a thicker cylindrical seal. The outer diameter of the thinner long rod portion of the first seal 417 is smaller than the outer diameter of the cylindrical sealing plug in the second seal 419. When multiple first seals 417 respectively compress multiple second seals 419, the second seals 419 are compressed, causing the cylindrical sealing plugs in the multiple second seals 419 to move out of the inner wall of the stratification pool 401 and create a certain distance between them and the outer surface of the stratification pool 401. As the second seals 419 move, the cylindrical sealing plugs in the multiple second seals 419 move out of the inner wall of the stratification pool 401 and create a certain distance between them and the outer surface of the stratification pool 401. Figure 11The elastic device shown in the second seal 419 is compressed and shortened. Additionally, when the first seal 417 compresses the second seal 419, according to the principle of mutual action of forces, the first seal 417 experiences a force from within a lifting baffle 414, causing the elastic element 418 within the first seal 417 to be compressed and shortened. Here, the elastic element 418 represents a spring, which in turn drives... Figure 7 The larger-diameter cylinder of the first seal 417 is inserted into the inner side of the lifting baffle 414, causing the smaller-diameter cylinder to remain in the circular hole of the lifting baffle 414. Since the outer diameter of the smaller-diameter cylinder is much smaller than the inner diameter of the lifting baffle 414, the oil residue remaining inside the lifting baffle 414 enters the interior of the mixing pipe 420 along the gap. In addition, as the oil residue flows out of the lifting baffle 414, the lifting baffle 414 moves downward along the outer wall of the perforated plate 409 through the cooperation between the multiple electric telescopic rods 407 and the multiple stepper motors 415. The perforated plate 409 moves upward with the movement of the electric telescopic rods 407, thereby keeping the first seal 417 and the second seal 419 relatively stationary. The oil sludge remaining on the top of the perforated plate 409 is moved into the mixing pipe 420 and then enters the oil collection tank 421 for collection. In addition, the outer surface of the lifting baffle 414 is made of rubber with sealing properties, and the inner diameter of the side of the stratified tank 401 corresponding to the lifting baffle 414 is also made of rubber with sealing properties. The top of the slide plate 410 is also made of rubber with sealing properties. Therefore, when using the stratified settling component 4 to collect oil sludge, it will not cause a large amount of oil sludge leakage. It also improves the efficiency of oil sludge separation and realizes automatic collection of oil sludge. This solves the problem of low separation efficiency of traditional single-layer treatment tanks in the existing technology for wastewater from scrapped vehicles containing a large amount of oil sludge.

[0042] like Figures 1-2 and Figures 5-15As shown, the secondary purification component 5 includes an output pipe 501. Multiple ends of the output pipe 501 are fixedly connected to the interior of multiple stratification tanks 401. Multiple first electromagnetic switch valves 502 are provided on the outer surface of the output pipe 501. Multiple lead pipes 503 are fixedly connected to the outer surface of the output pipe 501. Second electromagnetic switch valves 504 are provided on the outer surface of each of the multiple lead pipes 503. Delivery pumps 505 are fixedly installed on the outer surface of each of the multiple stratification tanks 401 by screws. Oil inlet pipes 506 are fixedly connected to the input ends of the multiple delivery pumps 505. The top ends of the multiple oil inlet pipes 506 are fixedly connected to the bottom ends of the multiple lead pipes 503. Inlet pipes 507 are fixedly connected to the output ends of the multiple delivery pumps 505. Oil outlet pipes 508 are fixedly connected to the bottom ends of the multiple inlet pipes 507. The bottom ends of the multiple oil outlet pipes 508 are fixedly connected to the interior of the oil collection tank 421. Multiple trace oil detectors 509 are provided on the inner wall of the output pipe 501.

[0043] In this embodiment, after the oil sludge in the multiple stratification pools 401 has been separated, the drive motor 405 can be restarted to drive the multiple threaded rods 402 to rotate in the opposite direction, thereby moving the multiple lifting baffles 414 back. Simultaneously, as the lifting baffles 414 move back, the multiple first seals 417 move to positions away from the second seals 419, causing the first seals 417 to reset under the action of the elastic member 418, while the second seals 419 reset under the action of their own elastic devices. Then, the multiple first electromagnetic switch valves 502 can be opened, thereby... This process ensures that all wastewater stored in multiple stratified tanks 401 flows outward through the output pipe 501 to an external collection device. Simultaneously, multiple trace oil detectors 509 are activated to detect the oil content in the wastewater entering the output pipe 501. These trace oil detectors 509 utilize ultraviolet fluorescence to achieve quantitative analysis based on the optical properties of oily substances. The molecular structures of mineral oil, lubricating oil, and diesel oil in wastewater contain conjugated double bonds and unsaturated benzene ring groups. When these groups are irradiated with ultraviolet light of a specific wavelength, they absorb light energy, causing the molecules to transition from the ground state to an unstable state. In the excited state, the molecule then releases energy to return to the ground state, emitting fluorescence with a longer wavelength. The fluorescence intensity of oily substances is positively correlated with the oil concentration in the wastewater. Within the concentration range, the higher the oil content, the more oil molecules emit fluorescence per unit volume, and the stronger the fluorescence intensity. By comparing with the instrument's built-in standard curve, the oil content in the current wastewater sample is calculated and the result is directly displayed. The signal is then transmitted to an external controller. When the controller detects a high oil content in the wastewater entering the output pipe 501, it indicates that the oil layer on the surface of the stratified tank 401 has entered the output pipe 501. Once inside the 01 section, the corresponding first electromagnetic switch valve 502 can be closed via an external controller, while the corresponding second electromagnetic switch valve 504 is opened, and the corresponding delivery pump 505 is started. This pump drives the oil inlet pipe 506 to draw oil sludge into the branch pipe in the output pipe 501, allowing the oil sludge to flow outward through the inlet pipe 507 to the inside of the oil outlet pipe 508, and finally enter the oil collection tank 421 for collection. This achieves secondary separation of oil sludge in automotive wastewater, further improving the purification efficiency of oil sludge in wastewater pretreatment.

[0044] The operating method and working principle of this device are as follows: When environmental pretreatment of wastewater from scrapped vehicles is required, the wastewater is first transported to the interior of filter tank 2 via external conveying equipment, thereby filtering out impurities in the wastewater. Since wastewater from scrapped vehicles contains a large amount of emulsified oil, such as emulsions formed by mixing engine waste oil, lubricating oil, and cutting oil with water, the stability of these emulsified oils depends on surfactants adsorbed on the surface of the oil droplets. These substances form a charged protective film on the outer layer of the oil droplets, preventing them from colliding and aggregating, thus dispersing them evenly in the water as tiny particles and preventing natural stratification, thereby preventing the separation of oil in the wastewater. To address this, a water pump installed inside filter tank 2 is used... The filtered wastewater is transported to the first mixing chamber 302 through the diversion pipe 301. Then, the one-way valve 306 is opened, allowing the inorganic demulsifier stored in the sealed tank 303 to be transported downwards into the first mixing chamber 302. After being fully mixed with the wastewater in the first mixing chamber 302, it is then transported to the second mixing chamber 308 through the conveying pipe 307 for secondary mixing, further ensuring thorough mixing of the wastewater and inorganic demulsifier. The mixed wastewater then enters the connecting pipe 309 and is finally transported to multiple stratified tanks 401 through multiple diversion pipes 310. Through the action of the mixing component 3, the wastewater from the scrapped vehicle and the inorganic demulsifier are effectively mixed. The mixture disrupts the stable emulsified oil system in the wastewater, causing tiny emulsified oil droplets to aggregate into larger, separable oil droplets. This creates conditions for subsequent oil-water separation and wastewater treatment to meet standards. After the mixed wastewater enters its corresponding stratification tank 401 through multiple diversion pipes 310, it is first allowed to settle for a certain period in each stratification tank 401. This allows the oil in the wastewater to float upwards due to density differences, accumulating on the surface. The stratification tanks 401 effectively divide the originally deeper oil-floating pool into multiple stratification tanks 401, shortening the path of the rising oil droplets. Consequently, within the same timeframe, the oil droplets in the multiple stratification tanks 401 are significantly reduced in size compared to the original deeper oil-floating pool. The oil in the wastewater is purified more thoroughly. After the oil and wastewater have separated into layers, multiple electric telescopic rods 407 are activated to extend or retract, causing multiple corresponding perforated plates 409 to move upward or downward until the tops of the perforated plates 409 contact the lowest points of the oil layers. Then, multiple forward and reverse motors 411 are activated to rotate multiple lead screws 412, which in turn move multiple sliding plates 410 along the inner walls of the perforated plates 409. The limiting tubes 413 limit the sliding plates 410. When the rectangular holes in the perforated plates 409 coincide with the solid parts of the sliding plates 410, the effect is as follows: Figure 6When the perforated plate 409 and the slide plate 410 form a complete plate structure, the drive motor 405 can be started to drive the corresponding gear 403 to rotate, which in turn drives the belt 404 on the outside to rotate, causing the multiple gears 403 coupled to rotate, which in turn causes the multiple threaded rods 402 to rotate, thereby driving the multiple slide plates 410 to move along the inner wall of the multiple stratification pools 401 towards the mixing tube 420. In addition, as the multiple slide plates 410 move, they also drive the multiple first seals 417 to move forward. When the multiple first seals 417 move to the position where their outer surfaces contact the inner walls of the multiple stratification pools 401, the multiple stepper motors 415 can be started to drive the multiple threaded tubes 416 to rotate, which in turn activates the multiple lifting baffles 414 to move along the multiple perforated plates. The inner wall of 409 moves upward, thus trapping oil stains in the enclosed space formed by the lifting baffle 414, the perforated plate 409, and the sliding plate 410. When the lifting baffle 414 moves the first seal 417 upward to the position corresponding to the second seal 419, the stepper motor 415 is turned off, and then the drive motor 405 is started again to continue moving the multiple lifting baffles 414 forward until the multiple lifting baffles 414 move to the position where they are in tight contact with the inner wall of the multiple stratification pools 401. At this time, the multiple first seals 417 move to the position where they are in contact with the multiple second seals 419, and squeeze the multiple second seals 419, thereby causing the multiple second seals 419 to move out of the inner wall of the stratification pool 401 and create a certain distance between them and the outer surface of the stratification pool 401. As the second seals 419 move, the oil stains are trapped in the enclosed space formed by the lifting baffle 414, the perforated plate 409, and the sliding plate 410. Figure 11 The elastic device shown in the second seal 419 is compressed and shortened. Additionally, when the first seal 417 compresses the second seal 419, according to the principle of mutual action of forces, the first seal 417 is subjected to a force within a lifting baffle 414, causing the elastic element 418 within the first seal 417 to be compressed and shortened, thereby driving the elastic element 418... Figure 7The larger-diameter cylinder in the first seal 417 is inserted into the inner side of the lifting baffle 414, causing the smaller-diameter cylinder to remain in the circular hole in the lifting baffle 414. Since the outer diameter of the smaller-diameter cylinder is much smaller than the inner diameter of the lifting baffle 414, the oil residue remaining inside the lifting baffle 414 enters the interior of the mixing pipe 420 along the gap. Furthermore, as the oil residue flows out of the lifting baffle 414, the lifting baffle 414 moves downward along the outer wall of the drain plate 409 through the cooperation between the multiple electric telescopic rods 407 and the multiple stepper motors 415. As the electric telescopic rod 407 moves, plate 409 moves upward, keeping the first seal 417 and the second seal 419 relatively stationary until all the oil residue remaining on the top of the leak plate 409 is moved into the mixing pipe 420 and collected in the oil collection tank 421. Once the oil residue in the multiple stratified tanks 401 has been separated, the drive motor 405 can be restarted to rotate the multiple threaded rods 402 in the opposite direction, thereby moving the multiple lifting baffles 414 back. Simultaneously with the lifting baffles 414 moving back... This causes multiple first seals 417 to move away from the second seal 419, thereby resetting the first seals 417 under the action of the elastic element 418, while the second seal 419 is reset under the action of its own elastic device. Then, multiple first electromagnetic switch valves 502 can be opened, allowing the wastewater stored in multiple stratified tanks 401 to flow outward through the output pipe 501 to the external collection device. At the same time, multiple trace oil detectors 509 are turned on to detect the oil content in the wastewater entering the output pipe 501. When the detector detects oil entering the output pipe 501, the oil content is detected. When the oil content in the wastewater in 01 is high, it indicates that the oil layer on the surface of the stratified tank 401 has entered the interior of the output pipe 501. At this time, the corresponding first solenoid switch valve 502 can be closed by the external controller, while the corresponding second solenoid switch valve 504 is opened and the corresponding transfer pump 505 is started, so that it drives the oil inlet pipe 506 to draw oil into the branch pipe in the output pipe 501. Thus, the oil flows outward through the inlet pipe 507 to the interior of the oil outlet pipe 508, and finally enters the oil collection tank 421 for collection.

[0045] The wiring diagrams for the hydraulic rod 304, check valve 306, drive motor 405, electric telescopic rod 407, first electromagnetic switch valve 502, second electromagnetic switch valve 504, delivery pump 505, and trace oil detector 509 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the hydraulic rod 304, check valve 306, drive motor 405, electric telescopic rod 407, first electromagnetic switch valve 502, second electromagnetic switch valve 504, delivery pump 505, and trace oil detector 509 in water will not be explained in detail.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmental protection pretreatment device for abandoned automobile sewage, comprising a mounting bottom plate (1), a hierarchical standing assembly (4) for stratified purification of automobile sewage is arranged on the top of the mounting bottom plate (1), and a secondary purification assembly (5) is arranged on the outer surface of the hierarchical standing assembly (4), characterized in that: The hierarchical standing assembly (4) comprises a plurality of hierarchical pools (401), a plurality of said hierarchical pools (401) are provided with a leak hole plate (409) between the opposite inner walls, the inner wall of the plurality of said leak hole plates (409) is slidably connected with a sliding plate (410), the outer surface of the plurality of said leak hole plates (409) is slidably connected with a lifting baffle (414) for collecting floating oil, the floating oil in the plurality of said hierarchical pools (401) moves upward to the surface layer of the sewage under the action of static, the plurality of said leak hole plates (409) respectively form a sealed bottom plate in combination with the plurality of sliding plates (410), the plurality of said leak hole plates (409) are driven to move under the driving of the corresponding driving mechanism, so as to collect the floating oil, and the plurality of said lifting baffles (414) prevent the floating oil from overflowing; The outer surface of the hierarchical standing assembly (4) is further provided with a mixing assembly (3) for mixing the sewage and the inorganic demulsifier, the mixing assembly (3) comprises a drainage pipe (301), the bottom end of the drainage pipe (301) is fixedly connected with a first mixing bin (302), and the top of the first mixing bin (302) is fixedly connected with a sealed tank (303) for storing the inorganic demulsifier; The leak hole plate (409) and the sliding plate (410) are relatively slidably combined, and selectively form a sealed bottom plate or a perforated bottom plate under the action of the driving mechanism, and form a movable oil collecting cavity in cooperation with the liftable lifting baffle (414); The mixing assembly (3) further comprises a hydraulic rod (304), the bottom end of the hydraulic rod (304) is fixedly installed with a piston (305), the outer surface of the sealed tank (303) is provided with a one-way valve (306) near the bottom end, one end of the first mixing bin (302) is fixedly connected with a conveying pipe (307), the bottom end of the conveying pipe (307) is fixedly connected with a second mixing bin (308), the bottom of the second mixing bin (308) is fixedly connected with a communication pipe (309), and the outer surface of the communication pipe (309) is fixedly connected with a plurality of shunt pipes (310) near the bottom end; One end of the plurality of said shunt pipes (310) is respectively fixedly penetrated into the interior of the plurality of hierarchical pools (401).

2. The environmental protection pretreatment device for the waste water of the scrapped car according to claim 1, characterized in that: The hierarchical standing assembly (4) further comprises a plurality of threaded rods (402), one end of the plurality of said threaded rods (402) is fixedly installed with a gear (403), the outer surfaces of the plurality of said gears (403) are meshingly connected with a belt (404), the outer surface of the hierarchical pool (401) arranged at the bottom is fixedly installed with a driving motor (405) through an auxiliary plate, the outer surfaces of the plurality of said threaded rods (402) are threadedly sleeved with a push plate (406), and the inner bottom surface of the plurality of said push plates (406) is uniformly provided with three electric telescopic rods (407).

3. The environmental protection pretreatment device for the waste water of the scrapped car according to claim 2, characterized in that: Each adjacent three of the plurality of electric telescopic rods (407) is a group, the bottom ends of each group of electric telescopic rods (407) are fixedly connected with lifting plates (408), the opposite inner walls of the plurality of leak hole plates (409) are fixedly connected with reversible motors (411) near one end, the output ends of the plurality of reversible motors (411) are fixedly connected with lead screws (412), the opposite inner walls of the plurality of leak hole plates (409) are fixedly connected with limit tubes (413) near one side, and the bottoms of the plurality of leak hole plates (409) are fixedly connected with stepping motors (415) through screws.

4. The environmental protection pretreatment device for the waste water of the scrapped car according to claim 3, characterized in that: The output ends of the plurality of stepping motors (415) are fixedly connected with threaded pipes (416), the inner walls of the plurality of lifting baffles (414) are slidably connected with first sealing members (417), the outer surfaces of the plurality of first sealing members (417) are provided with two elastic members (418) through auxiliary rods, the outer surfaces of the plurality of layered pools (401) are provided with second sealing members (419), the outer surfaces of the plurality of layered pools (401) are fixedly and communicatively connected with a mixing pipe (420) through auxiliary pipes, and the top of the mounting bottom plate (1) is provided with an oil collecting pool (421).

5. The environmental protection pretreatment device for the abandoned automobile sewage according to claim 4, characterized in that: The outer surfaces of each adjacent two of the plurality of layered pools (401) are fixedly connected, the top of the layered pool (401) located at the top is coupled with a filter pool (2), the two ends of the plurality of threaded rods (402) are movably penetrated into the opposite outer parts of the plurality of layered pools (401), the output shaft of the driving motor (405) is fixedly connected with the outer surface of the gear (403) arranged at the lowest position, the opposite outer surfaces of the plurality of push plates (406) are slidably connected with the opposite inner walls of the plurality of layered pools (401), and the bottoms of the plurality of lifting plates (408) are fixedly connected with the tops of the plurality of leak hole plates (409).

6. The environmental protection pretreatment device for the abandoned automobile sewage according to claim 5, characterized in that: The two ends of the lead screw (412) are movably penetrated into the opposite outer parts of the sliding plate (410), the two ends of the limit tube (413) are movably penetrated into the opposite outer parts of the sliding plate (410), the outer surface of the threaded pipe (416) is threadedly connected with the inner wall of the lifting baffle (414), the two ends of the threaded pipe (416) are movably penetrated into the opposite outer parts of the leak hole plate (409), each adjacent two of the plurality of elastic members (418) is a group, one end of each group of elastic members (418) is fixedly connected with the outer surface of the lifting baffle (414), the other end of each group of elastic members (418) is fixedly connected with the outer surface of the first sealing member (417), and the bottom end of the mixing pipe (420) is fixedly penetrated into the inside of the oil collecting pool (421).

7. The environmental protection pretreatment device for the abandoned automobile sewage according to claim 6, characterized in that: One end of the drainage tube (301) is fixedly penetrated into the inside of the filter pool (2), the outer surface of the hydraulic rod (304) is fixedly connected with the outer surface of the sealing tank (303) through an auxiliary frame, and the piston (305) is arranged in the inside of the sealing tank (303).

8. The environmental protection pretreatment device for the abandoned automobile sewage according to claim 7, characterized in that: The secondary purification assembly (5) comprises an output pipe (501), the multiple ends of the output pipe (501) are fixedly penetrated into the interiors of multiple layered pools (401), the outer surface of the output pipe (501) is provided with multiple first electromagnetic switch valves (502), the outer surface of the output pipe (501) is fixedly communicated with multiple guide pipes (503), the outer surfaces of the multiple guide pipes (503) are all provided with second electromagnetic switch valves (504), and the outer surfaces of the multiple layered pools (401) are all fixedly installed with conveying pumps (505) through screws.

9. The environmental protection pretreatment device for the abandoned automobile sewage according to claim 8, characterized in that: The input ends of the multiple conveying pumps (505) are all fixedly communicated with oil inlet pipes (506), the top ends of the multiple oil inlet pipes (506) are fixedly connected with the bottom ends of the multiple guide pipes (503) respectively, the output ends of the multiple conveying pumps (505) are all fixedly communicated with guide inlet pipes (507), the bottom ends of the multiple guide inlet pipes (507) are all fixedly communicated with oil outlet pipes (508), the bottom ends of the multiple oil outlet pipes (508) are all fixedly penetrated into the interiors of oil collecting pools (421), and the inner wall of the output pipe (501) is provided with multiple waterborne trace oil detectors (509).

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