A waste liquid treatment device for processing a selenium disulfide lotion

Abstract

This invention relates to the field of waste liquid treatment equipment, specifically to a waste liquid treatment device for selenium disulfide detergent processing, comprising: a tank and a steam heat exchanger tube assembly. This invention, by setting up a graded treatment mechanism and other components, uses coarse and fine filter plates to divide the interior of the tank into upper, middle, and lower heat zones. In conjunction with the steam heat exchanger tube assembly, concentrated heating in the middle zone naturally forms a vertical temperature gradient within the tank. Under this gradient, impurities of different forms in the waste liquid are classified and isolated in their corresponding temperature zones, avoiding the problem of soft and hard impurities forming stubborn composite scale layers in traditional one-pot treatment methods. This device achieves graded demulsification and step-by-step filtration of selenium disulfide detergent waste liquid within a single tank, ensuring that impurities in each zone are treated in their most easily removable form. This solves the technical contradiction of incomplete demulsification and the inability to simultaneously achieve secondary emulsification in traditional single-temperature treatment, while significantly reducing the cleaning difficulty of the heat exchanger tubes and filter plates.

Description

Technical Field

[0001] This invention relates to the field of waste liquid treatment equipment, specifically to a waste liquid treatment equipment for processing selenium disulfide detergent. Background Technology

[0002] Selenium disulfide lotion is a commonly used topical preparation in dermatology. Its main component is selenium disulfide, which is formulated with glycerin, sodium lauryl sulfate and other surfactants. Clinically, it is mainly used to remove dandruff, prevent and treat seborrheic dermatitis of the scalp and tinea versicolor. During the production of this detergent and the cleaning equipment, a large amount of mixed wastewater containing selenium disulfide, various surfactants, and oily components will inevitably be generated. This type of wastewater has a complex composition, and if it is discharged directly, it will not only cause serious environmental pollution, but also have a huge impact on the subsequent wastewater biological treatment system due to its oily components and surfactants, resulting in low treatment efficiency or even system collapse. Therefore, it is necessary to effectively pre-treat this type of wastewater. In the process of treating this type of wastewater, the heat treatment stage plays a core role, and its main purpose is to achieve demulsification. Thermal demulsification is a mature physical treatment method. Its principle is to destroy the stability of the oil-water interface film of the emulsion by raising the temperature of the wastewater. Specifically, the increase in temperature can significantly reduce the interfacial tension and viscosity of the liquid, while intensifying the thermal motion of oil and water molecules, making it easier for the originally stable suspended tiny oil droplets to collide and aggregate and grow larger, ultimately achieving the separation of the oil and water phases.

[0003] In traditional heat treatment waste liquid treatment devices, heat exchange tubes are concentrated in a certain area of ​​the tank, resulting in uneven temperature distribution inside the tank. The temperature is higher near the heat exchange tubes and lower further away. During high-temperature demulsification, oil, selenium disulfide, and colloids in the waste liquid precipitate out in large quantities on the outer wall of the heat exchange tubes and quickly form scale, adhering to the tube wall. This causes the heat transfer efficiency of the heat exchange tubes to continuously decrease and the heating energy consumption to continuously increase. As the scale layer thickens, the effective heat exchange area inside the tank decreases, the heating time required for demulsification is prolonged, and the treatment cycle is lengthened. Once the scale layer hardens further, it becomes extremely difficult to remove, eventually requiring shutdown for cooling and emptying of the tank for manual cleaning, affecting the continuous operation time of the equipment and reducing the overall operating efficiency and production continuity of the waste liquid treatment device. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a waste liquid treatment device for processing selenium disulfide detergents, which can effectively solve the problem that stubborn complex scale easily forms on the surface of heat exchange tubes during waste liquid heat treatment in existing technologies, requiring frequent shutdowns for manual cleaning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a waste liquid treatment device for processing selenium disulfide detergent, comprising: a tank and a steam heat exchanger tube assembly, wherein the interior of the tank is fixedly connected to the steam heat exchanger tube assembly, and both ends of the steam heat exchanger tube assembly are respectively connected to a gas source pipe and a recovery pipe, and further comprising: This graded heat treatment mechanism is used to grade and clean dirt in stages, preventing the formation of stubborn composite scale by mixing soft and hard impurities. The graded treatment mechanism includes a coarse filter plate and a fine filter plate, which are arranged sequentially from top to bottom inside the tank. The coarse and fine filter plates divide the inner cavity of the tank into an upper temperature zone, a middle temperature zone, and a lower temperature zone. A drive source is provided on the top of the coarse filter plate and is fixedly connected to the top of the tank. A transmission rod is fixedly connected to the output end of the drive source. A pressure cleaning component is provided on the surface of the transmission rod. A scraper is fixedly connected to the surface of the transmission rod. A cleaning collection component is provided on one side of the scraper. A cleaning plate is provided at the bottom of the scraper and is fixedly connected to the transmission rod. A collection filter box is provided at the bottom of the cleaning plate and is fixedly connected to the transmission rod.

[0006] Furthermore, the fine filter plate is made of heat-insulating material, the coarse filter plate has a mesh size of 100-150 mesh, and the fine filter plate has a filtration accuracy of 5-10 micrometers. The mesh size and filtration accuracy of the coarse and fine filter plates can be adaptively adjusted according to the composition of the waste liquid and the usage requirements. The bottom of the scraper is provided with a suction hole, and the top of the cleaning plate is provided with a rinsing hole.

[0007] Furthermore, the pressure cleaning assembly includes two sets of fixed rings, which are fixedly connected to the surface of the transmission rod. The surfaces of the two sets of fixed rings are provided with stepped grooves. A sliding block is slidably connected inside the stepped grooves. A connecting block is slidably connected to one side of the sliding block, and the interior of the connecting block is elastically connected to the sliding block via an elastic telescopic rod. The connecting block is also elastically connected to the interior of the fixed ring via a return spring. The connecting block is slidably connected to the fixed ring. A pressing ring is slidably connected to one side of the connecting block, and the pressing ring is fixedly connected to the interior of the tank. A pushing column is connected to one side of the pressing ring via a one-way valve, and the pushing column is fixedly connected to the pressing ring. A moving ring is slidably connected inside the pushing column, and three sets of cleaning scraper rings are fixedly connected to one side of the moving ring via a connecting rod. The three sets of cleaning scraper rings are slidably connected to the surface of the steam heat exchanger tube assembly.

[0008] Furthermore, a pressing plate is fixedly connected to the top of the connecting block, and a cavity is opened inside the pressing ring. The cavity is slidably connected to the pressing plate. A multi-way valve is connected to one side of the cavity, and the multi-way valve is connected to the cleaning scraper ring through a hose. A drain pipe is connected to one side of the cavity through a one-way connecting valve.

[0009] Furthermore, the top of the scraper is connected to a suction pipe, which is connected to one side of the pressing ring. One side of the pushing column is connected to a control valve, which is connected to a drain pipe via a pipeline. One side of the moving ring is elastically connected to the pushing column via a reset telescopic column. One side of the pushing column is connected to a one-way water outlet valve, which is connected to the bottom of the cleaning plate via an air source pipe. One side of the pushing column is connected to a water inlet valve.

[0010] Furthermore, a lifting block is slidably connected to one side of the sliding block, and the lifting block is fixedly connected to the pressing ring. A micro switch is fixedly connected to one side of the lifting block, and the micro switch is electrically connected to the multi-way valve, the control valve, and the water inlet valve through a wire.

[0011] Furthermore, the cleaning and collection assembly includes a baffle that is slidably connected to a scraper. The inner wall of the tank has a movable groove located at the top of the coarse filter plate. A collection ring is rotatably connected inside the movable groove, and a collection groove is provided on one side of the collection ring. A rotary joint is rotatably connected to the bottom of the collection ring. An electromagnetic block is provided at the top of the collection groove and is fixedly connected to the collection ring. A sealing plate is magnetically connected to the bottom of the electromagnetic block and is slidably connected to the collection groove. The sealing plate and the collection ring are elastically connected through a support and reset rod.

[0012] Furthermore, an inclined block is fixedly connected to one side of the baffle, a moving block is slidably connected to one side of the inclined block, the moving block is slidably connected to the scraper, and the moving block is slidably connected to the tank body. A proximity sensor is provided on one side of the moving block, and the proximity sensor is fixedly connected to the tank body. The proximity sensor is electrically connected to the electromagnetic block through a controller.

[0013] Furthermore, the top of the electromagnetic block is magnetically connected to a plug rod, which is plugged into the top of the collecting ring and slidably connected to the transmission rod. One side of the plug rod is elastically connected to the tank body through an elastic reset rod.

[0014] Beneficial effects The technical solution provided by this invention has the following advantages compared with the known prior art: I. This invention, by setting up a graded treatment mechanism and other components, uses coarse and fine filter plates to divide the inside of the tank into three heat zones: upper, middle, and lower. In conjunction with the steam heat exchanger tube assembly, concentrated heating in the middle zone naturally creates a vertical temperature gradient within the tank. Under this gradient, impurities of different forms in the waste liquid are classified and isolated within their corresponding temperature zones, avoiding the problem of soft and hard impurities forming stubborn composite scale layers in the traditional one-pot cooking method. This device achieves graded demulsification and step-by-step filtration of selenium disulfide detergent waste liquid within a single tank, ensuring that impurities in each zone are treated in their most easily removable form. This fundamentally solves the technical contradiction between incomplete demulsification and the inability to simultaneously achieve secondary emulsification in traditional single-temperature treatment, while significantly reducing the cleaning difficulty of the heat exchanger tubes and filter plates.

[0015] Second, this invention, by setting up components such as a pressure cleaning assembly, and through the cooperation between the stepped groove and the sliding block, enables the transmission rod to drive the connecting block to move back and forth through rotational motion, thereby driving the cleaning scraper ring to periodically scrape and clean the surface of the steam heat exchanger tube assembly. Since the high-temperature zone in the middle only focuses on treating the newly precipitated oil, selenium disulfide, and colloids in a soft gel state, the cleaning scraper ring can immediately scrape them off during the short window period before the precipitates harden, thus preventing the hardening and accumulation of scale from the source. This achieves the effect of ensuring long-term stable heat transfer efficiency of the heat exchanger tube without the need for manual cleaning during shutdown.

[0016] Third, this invention, by setting up components such as a cleaning collection assembly, tilting block, moving block, proximity sensor, electromagnetic block, plug-in rod, and collection ring, and through the force-sliding cooperation between the baffle and the scraper, enables the collection ring to automatically lock with the transmission rod and rotate synchronously with it when the impurity accumulation resistance reaches a threshold. This achieves the effect of automatically collecting impurities accumulated on the top of the coarse filter plate as needed, effectively reducing the filtration load on the fine filter plate. At the same time, this device, through a single drive source combined with the above-mentioned mechanical linkage structure, synchronously converts the rotational motion into multiple cleaning actions such as heat exchange tube scraping, coarse filter plate surface scraping, coarse filter plate backwashing, impurity negative pressure suction, and positive pressure discharge. It eliminates the need for separate power sources for each cleaning unit, greatly simplifying the equipment structure, reducing the probability of failure and maintenance costs, and realizing full-process online self-cleaning of the entire waste liquid treatment process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the tank body of the present invention; Figure 3 This is a schematic diagram of the graded processing mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the connecting block of the present invention; Figure 6 This is a rear view schematic diagram of the grading processing mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the cleaning and collection component of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point C in the middle; Figure 10 For the present invention Figure 8 Enlarged diagram of point D in the middle.

[0019] Reference numerals: 1. Tank; 2. Steam heat exchanger tube assembly; 3. Grading mechanism; 31. Coarse filter plate; 32. Fine filter plate; 33. Drive rod; 34. Pressurized cleaning assembly; 341. Fixed ring; 342. Stepped groove; 343. Sliding block; 344. Connecting block; 345. Press-in ring; 346. Pushing column; 347. Moving ring; 348. Cleaning scraper ring; 35. Scraper; 36. Cleaning collection assembly; 36 1. Baffle; 362. Collection ring; 363. Rotary joint; 364. Electromagnetic block; 365. Sealing plate; 37. Cleaning plate; 38. Collection filter box; 4. Press-in plate; 5. Multi-way valve; 6. Drain pipe; 7. Suction pipe; 8. Control valve; 9. One-way outlet valve; 10. Inlet valve; 11. Lifting block; 12. Micro switch; 13. Tilting block; 14. Moving block; 15. Proximity sensor; 16. Connecting rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] See attached document Figure 1-10A waste liquid treatment device for processing selenium disulfide detergent includes: a tank 1 and a steam heat exchanger tube assembly 2. The interior of the tank 1 is fixedly connected to the steam heat exchanger tube assembly 2. The two ends of the steam heat exchanger tube assembly 2 are respectively connected to a gas source pipe and a recovery pipe. The tank 1 supports the entire device. Steam is introduced into the steam heat exchanger tube assembly 2 to provide heat for the heat treatment of the waste liquid. The top of the tank 1 is provided with an inlet for inputting the waste liquid to be treated, and the bottom is provided with an outlet pipe for discharging the treated waste liquid. The system also includes a grading treatment mechanism 3 for graded heat treatment, which cleans dirt in stages and prevents soft and hard impurities from forming stubborn composite scale. The grading treatment mechanism 3 includes a coarse filter plate 31 and a fine filter plate 32, which are arranged sequentially from top to bottom inside the tank 1. The coarse filter plate 31 and the fine filter plate 32 divide the inner cavity of the tank 1 into an upper temperature zone, a middle temperature zone, and a lower temperature zone. It is worth noting that the coarse filter plate 31 and the fine filter plate 32 are installed in the heat separation zone and can be adaptively adjusted according to usage requirements. A drive source is provided on the top of the coarse filter plate 31. The drive source is existing technology and can be a motor. The drive source is fixedly connected to the top of the tank 1. A transmission rod 33 is fixedly connected to the output end of the drive source. A pressure cleaning component 34 is provided on the surface of the transmission rod 33. A scraper 35 is fixedly connected to the surface of the transmission rod 33. A suction hole is opened at the bottom of the scraper 35. A cleaning collection component 36 is provided on one side of the scraper 35. A cleaning plate 37 is installed at the bottom of the tank and is fixedly connected to the transmission rod 33. A rinsing hole is provided at the top of the cleaning plate 37, and a collection filter box 38 is installed at the bottom of the cleaning plate 37 and is fixedly connected to the transmission rod 33. A coarse filter plate 31 and a fine filter plate 32 divide the tank into three temperature zones, intercepting impurities of different particle sizes in stages to prevent the formation of stubborn composite scale from soft and hard impurities. The drive source drives the transmission rod 33 to rotate at a uniform speed, which simultaneously drives the pressure cleaning component 34, scraper 35, cleaning plate 37, and collection filter box 38 to operate. The scraper 35 scrapes away accumulated impurities from the surface of the coarse filter plate 31, the suction hole absorbs residual dirt from the gaps in the filter plate, the cleaning collection component 36 collects the scraped impurities, the cleaning plate 37 sprays liquid to rinse the clogged parts of the filter plate, and the collection filter box 38 collects residual fine impurities. The entire process achieves graded demulsification and full-process online self-cleaning, solving the problem of low heat exchange efficiency due to equipment blockage and improving the continuity and stability of waste liquid treatment. Among them, the fine filter plate 32 is made of heat-insulating material, the coarse filter plate 31 has a mesh size of 100-150 mesh, and the fine filter plate 32 has a filtration accuracy of 5-10 microns. The mesh size and filtration accuracy of the coarse filter plate 31 and the fine filter plate 32 can be adaptively adjusted according to the composition of the waste liquid and the usage requirements. The heat-insulating fine filter plate 32 blocks the heat conduction of the tank and maintains the temperature stability of each area. The 100 to 150 mesh coarse filter plate 31 intercepts large solid impurities, and the 5 to 10 micron fine filter plate 32 intercepts small agglomerated impurities. The adjustable filtration parameters are suitable for selenium disulfide detergent waste liquid with different compositions, improve the adaptability of the graded filtration, and ensure the accuracy of impurity interception. See attached document Figure 2-7 The pressure cleaning assembly 34 includes two sets of fixed rings 341, which are fixedly connected to the surface of the transmission rod 33. Stepped grooves 342 are formed on the surfaces of the two sets of fixed rings 341. A sliding block 343 is slidably connected inside the stepped grooves 342. A connecting block 344 is slidably connected to one side of the sliding block 343, and the interior of the connecting block 344 is elastically connected to the sliding block 343 via an elastic telescopic rod. The connecting block 344 is also elastically connected to the interior of the fixed rings 341 via a return spring. The connecting block 344 is slidably connected to the fixed rings 341. A pressing ring 345 is slidably connected to one side of the connecting block 344, and the pressing ring 345 is fixedly connected to the interior of the tank 1. One side of the pressing ring 345 is connected to a push column 346 via a one-way valve. It is worth noting that this one-way valve only allows fluid to flow from the interior of the pressing ring 345 to the interior of the push column 346, and does not allow reverse flow. The push column 345... 6 is fixedly connected to the pressing ring 345. The inside of the pushing column 346 is slidably connected to the moving ring 347, and one side of the moving ring 347 is fixedly connected to three sets of cleaning scraping rings 348 through the connecting rod. The three sets of cleaning scraping rings 348 are slidably connected to the surface of the steam heat exchange tube assembly 2. The fixed ring 341 rotates synchronously with the transmission rod 33. The stepped groove 342 pushes the sliding block 343 to move. The sliding block 343 drives the connecting block 344 to press the sewage in as the pressing ring 345 moves. The elastic telescopic rod and the return spring support component are squeezed and deformed when subjected to force and provide a return force. The sewage is pressed into the inside of the pushing column 346 through the one-way valve. The high-pressure liquid pushes the moving ring 347 to move. The moving ring 347 drives the three sets of cleaning scraping rings 348 to move against the surface of the steam heat exchange tube assembly 2 through the connecting rod, scraping off the soft scale that has just precipitated, avoiding the hardening and accumulation of scale, ensuring the stable heat transfer efficiency of the heat exchange tube, and reducing energy consumption and the frequency of shutdown for cleaning. The connecting block 344 has a fixedly connected pressing plate 4 at its top. The pressing ring 345 has an internal cavity that is slidably connected to the pressing plate 4. One side of the cavity is connected to a multi-way valve 5, which is connected to a cleaning scraper ring 348 via a hose. Another side of the cavity is connected to a drain pipe 6 via a one-way valve. The pressing plate 4 moves back and forth with the connecting block 344, pressurizing and resetting the cavity of the pressing ring 345. The cavity stores scraped impurities and a small amount of wastewater. The multi-way valve 5 diverts and collects the wastewater and impurities, while the hose collects the impurities cleaned by the cleaning scraper ring 348. The one-way valve controls the unidirectional flow of impurities and wastewater, allowing only the wastewater and impurities in the cavity to drain into the drain pipe 6, preventing backflow. The drain pipe 6 centrally discharges impurities and wastewater from the cavity, thoroughly cleaning the generated dirt and preventing impurities from re-attaching to the inside of the equipment. A suction pipe 7 is connected to the top of the scraper 35, and the suction pipe 7 is connected to one side of the pressing ring 345. A control valve 8 is connected to one side of the push column 346. The control valve 8 is existing technology and is connected to the drain pipe 6 via a pipe. One side of the moving ring 347 is elastically connected to the push column 346 via a reset telescopic column. A one-way water outlet valve 9 is connected to one side of the push column 346. The one-way water outlet valve 9 only allows liquid in the push column 346 to flow to the cleaning plate 37 via the air source pipe, and the one-way water outlet valve 9 is connected to the bottom of the cleaning plate 37 via the air source pipe. One side is connected to an inlet valve 10, which is existing technology; the suction pipe 7 connects the scraper 35 and the pressure ring 345, using the negative pressure generated by the space reset within the pressure ring 345 to suck up impurities blocking the coarse filter plate 31; the control valve 8 controls the opening and closing of the push column 346 and the drain pipe 6; the reset telescopic column drives the moving ring 347 to automatically reset, preparing for the next cleaning; the one-way outlet valve 9 sends the liquid in the push column 346 into the cleaning plate 37 through the air source pipe; the cleaning plate 37 performs positive pressure backwashing on the coarse filter plate 31 through the flushing holes; the inlet valve 10 replenishes the push column 346 with cleaning liquid; the negative pressure suction combined with positive pressure flushing thoroughly unclogs the filter plate and extends the maintenance cycle of the filter plate; the sliding block 343 A lifting block 11 is slidably connected to one side, and the lifting block 11 is fixedly connected to the pressing ring 345. A micro switch 12 is fixedly connected to one side of the lifting block 11. The micro switch 12 is existing technology and has a built-in timer module for timed shutdown. The micro switch 12 is electrically connected to the multi-way valve 5, the control valve 8, and the water inlet valve 10 through wires. The lifting block 11 guides the sliding block 343 to lift and switch the movement trajectory. The sliding block 343 triggers the micro switch 12. The micro switch 12 synchronously controls the opening and closing of the multi-way valve 5, the control valve 8, and the water inlet valve 10, automatically switching the working process of pressurization, suction, rinsing, and sewage discharge of the device, realizing the mechanical linkage of each cleaning process, eliminating the need for manual operation, and improving the automation level of the equipment. See attached document Figure 2-10The cleaning and collection assembly 36 includes a baffle 361, which is slidably connected to a scraper 35. A movable groove is provided on the inner wall of the tank 1, located at the top of the coarse filter plate 31. A collection ring 362 is rotatably connected inside the movable groove, and a collection trough is provided on one side of the collection ring 362. A rotary joint 363 is rotatably connected to the bottom of the collection ring 362. The rotary joint 363 can be connected to a corresponding discharge pipe (not shown in the figure, as it is prior art) to discharge impurities. An electromagnetic block 364 is provided at the top of the collection trough; this electromagnetic block 364 is prior art and is fixedly connected to the collection ring 362. The bottom of the electromagnetic block 364 is magnetically connected to a sealing plate 365, and the sealing plate 365 is slidably connected to the collection tank. The sealing plate 365 and the collection ring 362 are elastically connected through a support reset rod. The baffle 361 moves with the scraper 35 to collect impurities. The movable groove provides installation and rotation space for the collection ring 362. The collection ring 362 receives the collected impurities through the collection tank. The rotary joint 363 ensures that the discharge pipe stably transports impurities. When the electromagnetic block 364 is energized, it generates magnetic force, which drives the sealing plate 365 to move upward to open the collection tank. The support reset rod drives the sealing plate 365 to automatically reset and close, thereby collecting impurities, preventing impurities from scattering and flowing back, and reducing the filtration load on the coarse filter plate 31. An inclined block 13 is fixedly connected to one side of the baffle 361, and a movable block 14 is slidably connected to one side of the inclined block 13. The movable block 14 is slidably connected to the scraper 35 and the tank body 1. A proximity sensor 15 is provided on one side of the movable block 14. The proximity sensor 15 is existing technology and is fixedly connected to the tank body 1. The proximity sensor 15 is electrically connected to the electromagnetic block 364 through a controller. The inclined block 13 converts the impurity resistance of the baffle 361 into the horizontal displacement of the movable block 14. After the movable block 14 moves to the designated position, it is sensed by the proximity sensor 15. The proximity sensor 15 transmits a signal to the controller, and the controller automatically activates the electromagnetic block 364, triggering the impurity collection structure to operate. Once impurities accumulate to a certain level, they are automatically collected, reducing manual maintenance and improving equipment operating efficiency. The top of the electromagnetic block 364 is magnetically connected to a plug rod 16, which is plugged into the top of the collection ring 362. The plug rod 16 is also slidably connected to the transmission rod 33. One side of the plug rod 16 is elastically connected to the tank 1 via an elastic reset rod. The electromagnetic block 364 drives the plug rod 16 downwards, simultaneously engaging the transmission rod 33, causing the collection ring 362 to rotate synchronously with the transmission rod 33 to collect impurities. The elastic reset rod then drives the plug rod 16 upwards, releasing the lock between the collection ring 362 and the transmission rod 33, stopping the collection ring 362 from operating. This allows for on-demand start / stop of the collection structure, ensuring stable impurity collection and reducing ineffective wear on components. It is worth noting that the layout of all pipelines in this technical solution is implemented using conventional techniques in the field, ensuring reliable fluid transport and drainage operations without affecting the normal operation of moving parts. It is also worth noting that the core function of the various elastic reset structures involved in this technical solution (such as reset telescopic columns, elastic telescopic rods, support reset rods, reset springs, etc.) is to provide reset force, buffer stroke, or maintain contact pressure for the corresponding components. In actual implementation, the specific form of the aforementioned elastic reset structure is not limited to the spring or telescopic column structure listed in this embodiment; those skilled in the art can use other structures with specific requirements according to actual needs. The same reset function can be achieved by replacing conventional alternative structures (such as elastic sleeves, leaf springs, pneumatic reset rods, magnetic reset components, etc.) as long as the corresponding elastic bias and reset functions can be realized. Such replacements are all conventional design choices for those skilled in the art and do not depart from the protection scope of this technical solution. It is worth noting that all connections of liquid and gas flow paths in this technical solution are sealed with sealing structures to prevent leakage. The sealing structure can be selected from conventional dynamic or static seals in the art according to actual needs to form a reliable sealing system, effectively prevent liquid and gas leakage, and ensure the pressure stability and energy transmission efficiency of the device.

[0023] Working principle: This device adopts an intermittent liquid inlet and intermittent liquid outlet operation mode; a small amount of untreated wastewater will be discharged during the initial start-up of the equipment; this is a normal phenomenon of intermittent operation; no additional equipment parameters need to be adjusted; it is only necessary to avoid direct discharge of wastewater; this device relies on the three-stage temperature gradient treatment zone naturally formed inside the tank to achieve graded demulsification and step-by-step filtration of wastewater, fundamentally solving the problems of incomplete demulsification or secondary emulsification in traditional single-temperature treatment, while significantly reducing the risk of clogging of heat exchange tubes and filter plates, and improving the stability and continuity of wastewater treatment; In the first treatment stage, the wastewater to be treated enters the tank through the inlet and first enters the upper low-temperature pretreatment zone. The temperature in this zone is naturally maintained between 55 and 70 degrees Celsius due to the residual heat from the middle zone, heated by the steam heat exchanger assembly 2. Within this temperature range, the hydrogen bonds between the ether oxygen atoms and water molecules in the hydrophilic groups of nonionic surfactants in the wastewater, such as fatty alcohol polyoxyethylene ethers and alkylphenol polyoxyethylene ethers, begin to break. The solubility of the surfactants in water decreases, gradually reaching the cloud point and partially precipitating out. The emulsifying ability is significantly weakened, and the emulsified oil droplets originally coated with surfactants begin to show initial instability. Simultaneously, the high-molecular-weight thickeners in the wastewater, such as bentonite and cellulose derivatives, soften at this temperature, reducing the system viscosity, but not yet completely gelling. Furthermore, large particulate solid impurities such as packaging fragments and hair carried in the wastewater remain stable at this temperature and do not undergo further gelation. Decomposition or deformation; a 100 to 150 mesh coarse filter plate 31 is set at the bottom of this area. The mesh size of the filter plate can be flexibly adjusted according to the actual wastewater composition. On the one hand, the coarse filter plate 31 utilizes the characteristics of the initial deactivation of surfactants to intercept some of the initially precipitated surfactants and softening colloids, so that some emulsion systems can complete the initial demulsification in advance. On the other hand, under the condition of reduced viscosity of thickener, large particulate solid impurities are effectively intercepted to prevent them from entering the middle heat exchange zone and clogging the gaps between heat exchange tubes. This avoids the narrowing of the flow channels between heat exchange tubes, which would affect the circulation flow and heat transfer of wastewater, and lay a stable foundation for subsequent deep treatment. The drive source drives the transmission rod 33 to rotate. The rotation of the transmission rod 33 can simultaneously drive the scraper 35 to rotate continuously on the top of the coarse filter plate 31, continuously scraping away the impurities intercepted on the top of the coarse filter plate 31, preventing impurities from accumulating and clogging the filter plate surface, affecting the flow of water, and reducing the probability of filter plate clogging from the source. In the second treatment stage, the pretreated waste liquid flows downwards into the central steam-heated core zone; this area is the critical stage of the entire demulsification process. The steam heat exchanger assembly 2 exchanges heat through a gas source pipe and a recovery pipe. The gas source pipe delivers high-temperature steam into the heat exchanger tubes, and the steam releases heat and is discharged through the recovery pipe. The heat is conducted through the heat exchanger tube wall to the area between the coarse filter plate 31 and the fine filter plate 32. The temperature in this area is strictly controlled below 95 degrees Celsius to prevent excessive decomposition of anionic surfactants, prevent secondary emulsification of the demulsified oil-water system, and ensure that selenium disulfide does not undergo thermal decomposition, thus avoiding the release of toxic gases and ensuring the safety of the treatment process. Under these temperature conditions, the interfacial tension and system viscosity of the emulsion are... The temperature drops significantly, reducing the repulsive force between oil droplets, intensifying Brownian motion, and significantly increasing the collision frequency. Previously stable, suspended micro-oil droplets are more likely to coalesce into larger droplets. At this temperature, nonionic surfactants are almost completely precipitated, losing their emulsifying effect entirely. Due to surfactant deactivation and changes in the solution environment, the organic matter adsorbed on the surface of selenium disulfide particles in the wastewater desorbs, and collisions and aggregation begin between particles. Some soluble oils and organic matter also precipitate from the aqueous phase at this temperature. These precipitates include oil, selenium disulfide particles, surfactant precipitates, and colloids, which continuously precipitate and adhere to the outer wall of the heat exchange tube. These precipitates are initially in a soft gel or flocculent state and have not yet hardened. Simultaneously, the transmission rod 33 rotates... The fixed ring 341 rotates synchronously, which in turn causes the stepped groove 342 on its surface to rotate synchronously. The lower stepped groove of the stepped groove 342 can push the sliding block 343 to move horizontally. The movement of the sliding block 343 can drive the connecting block 344 to move synchronously. The sliding block 343 and the connecting block 344 are slidably connected internally, and the connecting block 344 is elastically connected to the sliding block 343 through an elastic telescopic rod, so that the sliding block 343 is stably placed in the lower groove of the stepped groove 342. The movement of the connecting block 344 can push the sewage pressed into the ring 345, so that the sewage enters the interior of the push column 346 through the one-way valve. The sewage entering the interior of the push column 346 can push the moving ring 347 to move. The movement of the moving ring 347 can be driven by the connecting rod. The connecting rod drives three sets of cleaning scraper rings 348 to move axially along the heat exchange tube, scraping and cleaning the surface of the steam heat exchange tube assembly 2. It takes advantage of the brief window period before the precipitates harden to scrape them off immediately. The small amount of impurities scraped off settles downward under the action of gravity, which completely solves the problem of difficult removal of precipitates after they harden in traditional devices. This avoids problems such as a continuous decline in the heat transfer efficiency of the heat exchange tube, a continuous increase in heating energy consumption, a prolonged demulsification and heating time, and a longer processing cycle. It significantly extends the continuous operation time of the equipment and reduces the number of times it is shut down for manual cleaning. It is worth noting that the stepped groove 342 includes a lower stepped groove and an upper stepped groove, both of which are groove structures formed by the stepped groove 342 itself. The distinction is made in the description to facilitate a clearer understanding of its working principle. In the third treatment stage, the wastewater that has undergone demulsification in the central core area continues to flow downwards into the lower medium-temperature fine filtration zone. The temperature in this zone is naturally maintained between 65 and 75 degrees Celsius. Within this temperature range, selenium disulfide particles further grow into relatively hard aggregates with a particle size of tens of micrometers. The remaining fine solid flocs remain stable in morphology. Simultaneously, because the temperature is below 80 degrees Celsius, the anionic surfactant remains relatively stable, and the selenium disulfide particles are far below their decomposition temperature, thus not producing toxic or harmful substances. A 5-10 micrometer fine filter plate 32 is installed at the lower end of this zone. Utilizing the characteristics of the already grown and stable flocs, it immediately intercepts the hard selenium disulfide aggregates and the remaining fine solid flocs, preventing the formation of secondary emulsions. The lower surface of the fine filter plate 32 is in contact with filtered water and requires no cleaning. The oil droplets that coalesce after demulsification naturally dissolve during the settling stage. However, the oil rises to the top of the tank and forms an oil layer, which can be removed separately by the existing oil collection device. This technology is existing technology and will not be described in detail here. The transmission rod 33 drives the scraper 35 to rotate and simultaneously drives the collection filter box 38 to rotate. The collection filter box 38 performs preliminary collection of the impurities scraped by the scraper 35, reducing the amount of impurities entering the fine filter plate 32 and reducing the filtration pressure of the fine filter plate 32. Large particles of impurities have been discharged through the sewage discharge system by pressing the cleaning component 34 and the cleaning collection component 36. The collection filter box 38 only collects fine impurities. Fine impurities are small in size, so they can be cleaned uniformly during the regular maintenance of the equipment, reducing the difficulty of daily maintenance. It is worth noting that if the content of fine impurities is high, the impurity discharge structure in the existing technology can be adapted and enhanced according to the actual use requirements to meet different processing requirements. The three processing stages are carried out in a single tank in a predetermined order, respectively completing different processing functions such as pretreatment, core demulsification, and fine filtration, forming an irreversible process flow; the processing stages are naturally connected by vertical temperature gradients, without the need for external material conveying equipment, realizing the compact integration of multi-stage heat treatment; This device, relying on a single drive source of transmission rod 33, can simultaneously achieve the entire process of heat exchange tube cleaning, filter plate scraping, impurity collection, and bidirectional self-cleaning, without the need for an additional power source, greatly simplifying the equipment structure and reducing the probability of equipment failure. When the sliding block 343 slides to the set position, it will contact the lifting block 11. At the same time, the sliding block 343 can trigger the micro switch 12. After the micro switch 12 is activated, it will simultaneously open the multi-way valve 5, the control valve 8, and the inlet valve 10. The lifting block 11 can push the sliding block 343 upward, causing the sliding block 343 to squeeze the elastic telescopic rod between itself and the connecting block 344, thereby moving the sliding block 343 into the upper stepped groove of the stepped groove 342. The upper stepped groove does not slide. When the moving block 343 is limited, and the sliding block 343 loses its compression, the connecting block 344, under the action of its connected return spring, drives the sliding block 343 to reset. At the same time, the connecting block 344 resets inside the pressing ring 345. Before this, during the reset process of the connecting block 344, it can drive the pressing plate 4 to move synchronously. The reset movement of the pressing plate 4 can open the interior of the cavity, creating negative pressure inside the cavity. At this time, the multi-way valve 5 is in the open state. The multi-way valve 5 is connected to the cleaning scraper ring 348 through the hose. The cleaning scraper ring 348 has just pushed the impurities together. Under the action of negative pressure, a small amount of sewage will carry the concentrated impurities into the interior of the cleaning scraper ring 348 and be transported to the interior of the cavity through the hose. When the connecting block 344 is in the open state, it drives the pressing plate 4 to move synchronously. The reset movement of the pressing plate 4 can open the interior of the cavity, creating negative pressure inside the cavity. When the connecting block 344 moves forward again, the pressing plate 4 will squeeze the sewage and impurities collected in the cavity and force them into the one-way connecting valve. The one-way connecting valve will directly discharge the sewage and impurities through the drain pipe 6. The amount of sewage discharged in this process is limited, but most of the scraped impurities can be discharged, which greatly reduces the maintenance frequency of the tank 1. When the connecting block 344 is fully reset, it will expose the connection port of the suction pipe 7 in the pressing ring 345. At this time, the pressing ring 345 is still under negative pressure. The top of the coarse filter plate 31 can be reversed through the suction pipe 7 to suck the impurities blocked in the coarse filter plate 31 along with some sewage into the interior of the pressing ring 345. Then the lower step of the stepped groove 342 pushes the end of the pressure ring 345. The new sliding block 343 is moved to one side of the sliding block 343, and the sliding block 343 falls into the lower groove. The sliding block 343 and the connecting block 344 are moved again, and the above cleaning and sewage discharge operation is repeated. At the same time, the moving ring 347 is reset by the action of the reset telescopic column connected to the push column 346. When it is reset, the sewage and impurities pushed into the push column 346 by the connecting block 344 are pushed into the sewage pipe 6. The sewage and impurities can directly enter the sewage pipe 6 for discharge. The push column 346 is equipped with a water inlet valve 10. The water inlet valve 10 is automatically opened by the micro switch 12 when the moving ring 347 is reset, so that the sewage enters the push column 346 and enters the other side of the moving ring 347.When the moving ring 347 is moved by the sewage pushed by the connecting block 344, the inlet valve 10 automatically closes under the action of the timer module. At this time, the moving ring 347 compresses the sewage entering and transports the sewage into the interior of the cleaning plate 37. The cleaning plate 37 backwashes the bottom of the coarse filter plate 31 through the flushing holes on its surface. The synergistic effect of reverse suction and positive pressure backwashing can effectively prevent the coarse filter plate 31 from being completely blocked and significantly extend the maintenance cycle of the coarse filter plate 31. Although this structure requires regular maintenance of the sealing components, considering all factors, its benefits in effectively reducing the maintenance frequency far outweigh the maintenance costs. This device is also equipped with an automatically triggered cleaning and collection component 36, which can realize the automatic collection and gathering of impurities, further reducing the frequency of manual intervention. When the scraper 35 scrapes away impurities, it will collect the impurities through the front baffle 361. When the impurity resistance encountered by the baffle 361 reaches the set threshold, the baffle 361 will slide backward, pushing the tilting block 13 to move. The movement of the tilting block 13 can push the moving block 14 to move. When the moving block 14 moves to the set position, it will be detected by the proximity sensor 15. The proximity sensor 15 sends a signal to the controller, and the controller activates the electromagnetic block 364. After the electromagnetic block 364 is activated, it can open the sealing plate 365, causing the sealing plate 365 to compress the support reset rod and open upward, thereby exposing the inlet of the collection tank. At the same time, the activation of the electromagnetic block 364 can cause the insertion rod to... 16 moves downward, and after the insertion rod 16 moves downward, one side is inserted into the transmission rod 33, rotating synchronously with the transmission rod 33; after the collection groove of the collection ring 362 is opened, it is always on one side of the scraper 35 and the baffle 361, which can effectively collect impurities that are gathered under the action of centrifugal force and water flow; the collection time can be adjusted according to the actual use requirements such as tank capacity and wastewater impurity content; after the set collection time is reached, the controller is existing technology, with a built-in timer module to turn off the electromagnetic block 364 at a timer, the sealing plate 365 is reset and closed under the action of the support reset rod, the insertion rod 16 moves upward and resets, the collection ring 362 and the transmission rod 33 are unlocked, and the rotation stops; this automatic collection system can further reduce the probability of clogging of the coarse filter plate 31, while significantly reducing the frequency of manual cleaning of impurities and improving the automation level of the equipment; It is worth noting that during actual use, users can use existing technical testing equipment to monitor the equipment's operating status, temperature, pressure, liquid level, and other parameters in real time, and perform timely maintenance according to actual usage needs to ensure the stable operation of each component.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste liquid treatment device for processing selenium disulfide detergent, comprising a tank (1) and a steam heat exchanger tube assembly (2), wherein the interior of the tank (1) is fixedly connected to the steam heat exchanger tube assembly (2), and both ends of the steam heat exchanger tube assembly (2) are respectively connected to a gas source pipe and a recovery pipe, characterized in that: Also includes: A graded heat treatment mechanism (3) is used to grade and clean dirt in stages, preventing soft and hard impurities from forming stubborn composite scale. The graded heat treatment mechanism (3) includes a coarse filter plate (31) and a fine filter plate (32), which are arranged sequentially from top to bottom inside the tank (1). The coarse filter plate (31) and the fine filter plate (32) divide the inner cavity of the tank (1) into an upper temperature zone, a middle temperature zone and a lower temperature zone. A drive source is provided on the top of the coarse filter plate (31), and the drive source is fixedly connected to the top of the tank (1). A transmission rod (33) is fixedly connected to the output end of the drive source. A pressure cleaning component (34) is provided on the surface of the transmission rod (33). A scraper (35) is fixedly connected to the surface of the transmission rod (33). A cleaning collection component (36) is provided on one side of the scraper (35). A cleaning plate (37) is provided at the bottom of the scraper (35). The cleaning plate (37) is fixedly connected to the transmission rod (33). A collection filter box (38) is provided at the bottom of the cleaning plate (37). The collection filter box (38) is fixedly connected to the transmission rod (33).

2. The waste liquid treatment device for processing selenium disulfide detergent according to claim 1, characterized in that, The fine filter plate (32) is made of heat-insulating material. The coarse filter plate (31) has a mesh size of 100-150 mesh. The fine filter plate (32) has a filtration accuracy of 5-10 micrometers. The mesh size and filtration accuracy of the coarse filter plate (31) and the fine filter plate (32) can be adjusted according to the composition of the waste liquid and the usage requirements. The bottom of the scraper (35) is provided with a suction hole, and the top of the cleaning plate (37) is provided with a rinsing hole.

3. The waste liquid treatment device for processing selenium disulfide detergent according to claim 1, characterized in that, The pressure cleaning assembly (34) includes two sets of fixing rings (341), which are fixedly connected to the surface of the transmission rod (33). The surfaces of the two sets of fixing rings (341) are provided with stepped grooves (342). A sliding block (343) is slidably connected inside the stepped groove (342). A connecting block (344) is slidably connected to one side of the sliding block (343). The interior of the connecting block (344) is elastically connected to the sliding block (343) via an elastic telescopic rod. Furthermore, the connecting block (344) is elastically connected to the interior of the fixing rings (341) via a return spring. The connecting block (344) is slidably connected to the fixed ring (341), and a press-in ring (345) is slidably connected to one side of the connecting block (344). The press-in ring (345) is fixedly connected to the inside of the tank (1). A push column (346) is connected to one side of the press-in ring (345) through a one-way valve. The push column (346) is fixedly connected to the press-in ring (345). A moving ring (347) is slidably connected to the inside of the push column (346). Three sets of cleaning scraper rings (348) are fixedly connected to one side of the moving ring (347) through a connecting rod. The three sets of cleaning scraper rings (348) are slidably connected to the surface of the steam heat exchanger tube assembly (2).

4. The waste liquid treatment device for processing selenium disulfide detergent according to claim 3, characterized in that, The top of the connecting block (344) is fixedly connected to a pressing plate (4). The inside of the pressing ring (345) is provided with a cavity, and the inside of the cavity is slidably connected to the pressing plate (4). One side of the cavity is connected to a multi-way valve (5), and the multi-way valve (5) is connected to the cleaning scraper ring (348) through a hose. One side of the cavity is connected to a drain pipe (6) through a one-way connecting valve.

5. The waste liquid treatment device for processing selenium disulfide detergent according to claim 3, characterized in that, The top of the scraper (35) is connected to a suction pipe (7), and the suction pipe (7) is connected to one side of the pressing ring (345). One side of the push column (346) is connected to a control valve (8), and the control valve (8) is connected to the drain pipe (6) through a pipe. One side of the moving ring (347) is elastically connected to the push column (346) through a reset telescopic column. One side of the push column (346) is connected to a one-way water outlet valve (9), and the one-way water outlet valve (9) is connected to the bottom of the cleaning plate (37) through an air source pipe. One side of the push column (346) is connected to a water inlet valve (10).

6. The waste liquid treatment device for processing selenium disulfide detergent according to claim 3, characterized in that, The sliding block (343) is slidably connected to a lifting block (11) on one side, and the lifting block (11) is fixedly connected to a pressing ring (345). A micro switch (12) is fixedly connected to one side of the lifting block (11), and the micro switch (12) is electrically connected to the multi-way valve (5), the control valve (8) and the water inlet valve (10) through a wire.

7. The waste liquid treatment device for processing selenium disulfide detergent according to claim 1, characterized in that, The cleaning and collection assembly (36) includes a baffle (361) and a scraper (35) slidably connected. The inner wall of the tank (1) is provided with a movable groove, which is located at the top of the coarse filter plate (31). A collection ring (362) is rotatably connected inside the movable groove. A collection groove is provided on one side of the collection ring (362). A rotary joint (363) is rotatably connected to the bottom of the collection ring (362). An electromagnetic block (364) is provided at the top of the collection groove. The electromagnetic block (364) is fixedly connected to the collection ring (362). A sealing plate (365) is magnetically connected to the bottom of the electromagnetic block (364). The sealing plate (365) is slidably connected to the collection groove. The sealing plate (365) and the collection ring (362) are elastically connected by a support reset rod.

8. The waste liquid treatment device for processing selenium disulfide detergent according to claim 7, characterized in that, An inclined block (13) is fixedly connected to one side of the baffle (361), and a moving block (14) is slidably connected to one side of the inclined block (13). The moving block (14) is slidably connected to the scraper (35) and to the tank (1). A proximity sensor (15) is provided on one side of the moving block (14), and the proximity sensor (15) is fixedly connected to the tank (1). The proximity sensor (15) is electrically connected to the electromagnetic block (364) through a controller.

9. The waste liquid treatment device for processing selenium disulfide detergent according to claim 7, characterized in that, The top of the electromagnetic block (364) is magnetically connected to a plug rod (16), and the plug rod (16) is plugged into the top of the collecting ring (362). The plug rod (16) is slidably connected to the transmission rod (33). One side of the plug rod (16) is elastically connected to the tank (1) through an elastic reset rod.

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