A wastewater treatment device for producing high-purity low-chlorine epoxy resin

Abstract

The application discloses a wastewater treatment device for high-purity low-chlorine epoxy resin production, and relates to the technical field of wastewater treatment.The device comprises a base frame, a rack is welded to the outer surface of the base frame, and a storage mechanism for storing wastewater is fixed to the upper surface of the base frame.The base frame and the rack constitute a stable load-bearing and multi-layer support frame of the entire wastewater treatment device.The base frame provides a stable bottom foundation, facilitating the overall movement and fixation of the equipment.The rack adopts a vertical frame structure, and the first transfer box, the second transfer box, the discharging mechanism and the driving mechanism and other components are arranged in layers according to the technological process, optimizing the space utilization and the gravity flow path of the materials.The storage mechanism is used as a collection and temporary storage unit for the epoxy resin production wastewater to be treated, is made of corrosion-resistant material, and has a capacity designed according to the production scale, providing a buffer for subsequent continuous treatment.The device can fully purify the wastewater for high-purity low-chlorine epoxy resin production.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin. Background Technology

[0002] The preparation of high-purity, low-chlorine epoxy resin generates wastewater with complex composition, fluctuating chlorine content, and difficulty in direct biochemical treatment. This type of wastewater typically contains unreacted epichlorohydrin, intermediates, various dissolved organics, and residual organochlorines. Improper treatment will cause lasting environmental harm. The core treatment approach is "physicochemical first, biochemical enhancement," meaning that firstly, efficient oxidation technologies (such as Fenton oxidation or ozone catalytic oxidation) are used to effectively break down and decompose large molecules and recalcitrant organics (especially organochlorides), converting them into smaller, easily biodegradable substances and significantly reducing wastewater toxicity. Subsequently, multi-stage biochemical treatment (such as hydrolysis-acidification combined with aerobic processes) is employed using specially acclimatized microbial communities to further degrade pollutants and remove residual chlorine. To ensure that the final discharge or reuse meets standards, advanced treatment units, such as activated carbon adsorption or membrane separation technology, are often used at the end to thoroughly remove trace organic matter and salts, achieving stable compliant discharge and resource recycling.

[0003] In the high-purity epoxy resin production process, if the wastewater treatment unit cannot completely remove impurities such as organochlorine, residual monomers, and intermediates, it will trigger a series of chain reactions. First, these residual toxic substances will severely inhibit the activity of microorganisms in the subsequent biological treatment unit, leading to decreased treatment efficiency or even system collapse, and persistently exceeding the standards for chemical oxygen demand (COD) and chloride ion concentration in the effluent. Direct discharge will cause persistent pollution to the receiving water body, and organochlorine may accumulate in aquatic organisms, damaging the ecosystem. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin, comprising a base frame, a machine frame welded to the outer surface of the base frame, and a storage mechanism for storing wastewater fixed to the upper surface of the base frame. By setting up the base frame and machine frame, a stable load-bearing and multi-layered support framework is formed for the entire wastewater treatment device. The base frame provides a stable foundation, facilitating the overall movement and fixing of the equipment. The machine frame adopts a vertical frame structure, arranging components such as the first transfer box, the second transfer box, the discharge mechanism, and the drive mechanism in layers according to the process flow, optimizing space utilization and the gravity flow path of materials. The storage mechanism, constructed of corrosion-resistant material, serves as a collection and temporary storage unit for the epoxy resin production wastewater to be treated. Its capacity is designed according to the production scale, providing a buffer for subsequent continuous treatment.

[0005] A first transfer box is welded to the middle section of the frame, and a second transfer box is welded to the top of the frame. By setting up the first and second transfer boxes, a platform is formed for the transfer, distribution, and mixing of wastewater and treatment agents at different treatment stages.

[0006] A discharge mechanism is used to discharge bubbles that have adsorbed impurities. The discharge mechanism is fixed at the top of the first transfer box. This discharge mechanism is a key component of the flotation and foam separation process, responsible for effectively collecting and discharging bubbles generated during wastewater treatment that have adsorbed organic impurities, suspended solids, or residual chloride ions, thereby achieving the separation and removal of pollutants.

[0007] The treatment unit, used for wastewater recycling and treatment, is located within the discharge mechanism. This treatment unit, a reaction and separation unit that performs the core wastewater purification function, integrates multiple functions such as physical agitation, chemical mixing, gas-liquid mass transfer, and solid-liquid separation. It is the core location for achieving the goal of high-purity, low-chlorine water quality.

[0008] A drive mechanism, fixed to the top of the frame, is used to drive the processing mechanism to rotate. By providing the drive mechanism, stable and controllable rotational power is ensured for the processing mechanism, guaranteeing mixing efficiency, mass transfer rate, or centrifugal separation effect during the reaction process.

[0009] The processing mechanism includes a stirring box located directly below the second transfer box. A liquid suction cylinder is installed inside the stirring box, and several water-permeable holes are formed on the outer surface of the bottom of the suction cylinder. The stirring box and the suction cylinder constitute the main reaction vessel and internal fluid circulation components of the processing mechanism. The stirring box, as the main reaction chamber, has a special internal tooth structure that greatly enhances fluid shearing and mixing. The suction cylinder, placed within it, has water-permeable holes at its bottom that allow the treated liquid to pass through, serving to filter or create a specific flow field. The combination of these two components is a key structural feature for achieving efficient processing.

[0010] Preferably, the storage mechanism includes a liquid storage tank, which is fixed to the upper surface of the base frame. A water pump passes through the outer surface of the liquid storage tank. A first hose is fixed to the water inlet end of the water pump, and the end of the first hose extends to the bottom of the inner cavity of the liquid storage tank. A second hose is fixed to the water outlet end of the water pump, and the end of the second hose away from the water pump passes through the upper surface of the second transfer box.

[0011] Preferably, a third flexible hose is inserted through the end of the storage tank away from the water pump, a first control valve is fixedly installed at the top end of the third flexible hose, a third transfer box is fixedly installed at the end of the first control valve, the top end of the third transfer box penetrates the outer surface of the first transfer box, a drain pipe penetrates the outer surface of the third transfer box, a collection box is movably connected to the upper surface of the base frame, and the end of the drain pipe is located directly above the collection box.

[0012] Preferably, the drive mechanism includes a connecting frame, which is welded to the outer surface of the top of the frame. A stepper motor is fixed to the inner wall of the connecting frame. A rotating rod is installed at the output end of the stepper motor through a coupling. A first turntable is fixed to the bottom end of the rotating rod. A belt is fitted on the outer surface of the first turntable. A second turntable is connected to the first turntable through the belt. The second turntable is welded to the outer surface of the agitator.

[0013] Preferably, the discharge mechanism includes a reaction box, which is fixedly mounted on the top of the first transfer box. A rotating box is rotatably connected to the outer surface of the reaction box via a first rolling bearing. A drain pipe passes through the lower surface of the rotating box. A second rolling bearing is fixedly mounted on the outer surface of the agitation box, and the outer ring of the second rolling bearing is welded to the inner wall of the rotating box.

[0014] Preferably, the outer surface of the reaction chamber has several circular holes, which are evenly distributed. The bottom of the inner wall of the rotating chamber is fixed with several baffles, which are aligned with the circular holes. A first barrier strip is welded to the outer surface of the reaction chamber, and a second barrier strip is welded to the upper surface of the baffles. The first barrier strip and the second barrier strip are squeezed and fitted together.

[0015] Preferably, a limit ring is welded to the lower surface of the second transfer box, and a ring is welded to the top of the agitator. The ring is slidably connected to the inner cavity of the limit ring. The agitator is a cylindrical internal tooth structure, including a cylindrical base and an internal tooth assembly. The cylindrical base is a hollow cylindrical shape. The internal tooth assembly is evenly distributed circumferentially along the inner wall of the cylindrical base. Each internal tooth is a protruding structure extending along the cylindrical axis, and the cross-section of the internal tooth has a trapezoidal profile. The size and spacing of each internal tooth are consistent, and the top of the internal tooth is coplanar with the axis of the cylindrical base. The whole structure is an integrally formed structure. A water-permeable plate is welded to the bottom of the suction cylinder. The water-permeable plate is welded to the inner wall of the rotating box. The suction cylinder is frictionally adapted to the internal tooth assembly on the inner wall of the agitator.

[0016] Preferably, a connecting frame is welded to the top of the inner wall of the stirring box, and a plurality of water-permeable grooves are opened on the surface of the connecting frame. A flow guide is welded to the upper surface of the connecting frame. A dripping pipe is fixed to the inner wall of the second transfer box. The dripping pipe is located directly above the flow guide. A second control valve is fixed to the top of the dripping pipe. An inlet pipe is welded to the top of the second control valve.

[0017] Preferably, a rotating cover is welded to the lower surface of the connecting frame, the rotating cover is rotatably connected to the inner cavity of the suction cylinder, a third rolling bearing is fixed to the outer surface of the rotating cover, a wrapping cover is welded to the outer ring of the third rolling bearing, the wrapping cover is welded to the top of the suction cylinder, a support frame is fixed to the inner wall of the rotating cover, and an inner hexagonal ring is welded to the inner wall of the support frame.

[0018] Preferably, a hydraulic cylinder is welded to the lower surface of the first transfer box. A switching mechanism is provided at the output end of the hydraulic cylinder. The switching mechanism is used to switch the treatment state of wastewater. The switching mechanism includes a moving rod, which is located at the output end of the hydraulic cylinder. A fixed frame is welded to the outer surface of the moving rod. A blocking ring is fixed at the end of the fixed frame. The blocking ring is squeezed and adapted to the lower surface of the permeable plate. A blocking frame is welded to the top of the moving rod. The blocking frame is rubbed and adapted to the inner wall of the suction cylinder. A drainage groove is opened on the bottom surface of the inner cavity of the blocking frame. A limiting block is welded to the bottom surface of the inner cavity of the blocking frame. A rotating ring is rotatably connected to the outer surface of the limiting block. A hexagonal prism is welded to the upper surface of the rotating ring. The hexagonal prism is rubbed and adapted to the inner wall of the inner hexagonal ring. A support rod is welded to the outer surface of the hexagonal prism. A spiral blade is welded to the end of the support rod.

[0019] This invention provides a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin. It has the following beneficial effects:

[0020] I. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin is equipped with a storage mechanism as a collection and temporary storage unit for the epoxy resin production wastewater to be treated. It is made of corrosion-resistant material and its capacity is designed according to the production scale to provide a buffer for subsequent continuous treatment.

[0021] II. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin, through the setting of a discharge mechanism, is a key component for the air flotation and foam separation process. It is responsible for effectively collecting and discharging the bubbles generated during the wastewater treatment process that have adsorbed organic impurities, suspended solids or residual chloride ions, thereby achieving the separation and removal of pollutants.

[0022] Third, the wastewater treatment device for the production of high-purity, low-chlorine epoxy resin, through the setting of the treatment mechanism, is a reaction and separation unit that performs the core purification function of wastewater. It integrates multiple functions such as physical agitation, chemical mixing, gas-liquid mass transfer or solid-liquid separation, and is the core place to achieve the goal of high-purity, low-chlorine water quality.

[0023] IV. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin consists of a stirring tank and a suction cylinder, which together form the main reaction vessel and internal fluid circulation components of the treatment mechanism. The stirring tank, as the main reaction chamber, has a special internal tooth structure that greatly enhances fluid shearing and mixing. The suction cylinder is placed inside, and the water-permeable holes at its bottom allow the treated liquid to pass through, serving as a filter or forming a specific flow field. The combination of the two is the key structure for achieving efficient treatment.

[0024] V. This wastewater treatment device for high-purity, low-chlorine epoxy resin production utilizes a precise radial limiting and guiding structure at the top of the agitator by incorporating limiting rings and circular rings. This ensures good coaxiality and stability of the agitator during high-speed rotation, preventing radial runout. The unique internal tooth structure of the agitator describes how the internal tooth assembly generates strong shearing, tearing, and turbulent effects on the liquid and added reagents within the tank during rotation. This significantly increases the solid-liquid contact area, promoting mass transfer and the adsorption of contaminants from the aqueous phase to the bubble surface, which is crucial for achieving efficient air flotation or mixing reactions. The inclusion of a permeable plate and the clearly defined frictional fit between the suction cylinder and the internal tooth assembly demonstrates relative movement between the suction cylinder and the agitator, with the permeable plate at its bottom allowing treated water to pass through and enter the suction cylinder. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to the present invention.

[0026] Figure 2 This is a side view of the structure of a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to the present invention.

[0027] Figure 3 This is a schematic diagram of the storage mechanism structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the drive mechanism structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the processing mechanism structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the material discharge mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the processing mechanism structure of the present invention;

[0032] Figure 8This is a schematic diagram of the stirring box structure of the present invention;

[0033] Figure 9 This is a partial structural diagram of the processing mechanism of the present invention;

[0034] Figure 10 This is a schematic diagram of the switching mechanism structure of the present invention;

[0035] Figure 11 This is a partial structural diagram of the switching mechanism of the present invention.

[0036] In the diagram: 1. Base frame; 2. Collection box; 3. Machine frame;

[0037] 4. Storage mechanism; 41. Storage tank; 42. First hose; 43. Water pump; 44. Second hose; 45. Third hose; 46. First control valve; 47. Third transfer box; 48. Drain pipe;

[0038] 5. Drive mechanism; 51. Connecting frame; 52. Stepper motor; 53. Rotating rod; 54. First turntable; 55. Belt; 56. Second turntable;

[0039] 6. Discharge mechanism; 61. Reaction chamber; 62. First barrier bar; 63. Circular hole; 64. First rolling bearing; 65. Rotating box; 66. Sewage pipe; 67. Baffle; 68. Second barrier bar;

[0040] 7. Processing mechanism; 71. Drip tube; 72. Second control valve; 73. Inlet pipe; 74. Second rolling bearing; 75. Stirring box; 76. Water permeable plate; 77. Suction cylinder; 78. Hydraulic cylinder; 79. Switching mechanism; 710. Ring; 711. Connecting frame; 712. Flow guide; 713. Envelope cover; 714. Rotating cover; 715. Third rolling bearing; 716. Support frame; 717. Inner hexagonal ring; 791. Moving rod; 792. Fixed frame; 793. Blocking ring; 794. Blocking frame; 795. Limiting block; 796. Rotating ring; 797. Hexagonal prism; 798. Support rod; 799. Spiral blade; 8. First transfer box; 9. Second transfer box; 10. Limiting ring. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0042] like Figures 1-11 As shown, this invention provides a technical solution: a wastewater treatment device for the production of high-purity, low-chlorine epoxy resin, comprising a base frame 1, a frame 3 welded to the outer surface of the base frame 1, and a storage mechanism 4 for storing wastewater fixed to the upper surface of the base frame 1. By setting up the base frame 1 and the frame 3, a stable load-bearing and multi-layered support frame is formed for the entire wastewater treatment device. The base frame 1 provides a stable bottom foundation, facilitating the overall movement and fixing of the equipment. The frame 3 adopts a vertical frame structure, arranging components such as the first transfer box 8, the second transfer box 9, the discharge mechanism 6, and the drive mechanism 5 in layers according to the process flow, optimizing space utilization and the gravity flow path of materials. The storage mechanism 4 serves as a collection and temporary storage unit for the epoxy resin production wastewater to be treated. It is made of corrosion-resistant material, and its capacity is designed according to the production scale, providing a buffer for subsequent continuous treatment.

[0043] A first transfer box 8 is welded to the middle section of the frame 3, and a second transfer box 9 is welded to the top of the frame 3. By setting up the first transfer box 8 and the second transfer box 9, a platform for the transfer, distribution and mixing of wastewater and treatment agents at different treatment stages is formed.

[0044] The discharge mechanism 6 is used to discharge the bubbles that have adsorbed impurities. The discharge mechanism 6 is fixed at the top of the first transfer box 8. The discharge mechanism 6 is a key component of the flotation and foam separation process. It is responsible for effectively collecting and discharging the bubbles and scum that have adsorbed organic impurities, suspended solids or residual chloride ions generated during wastewater treatment, thereby achieving the separation and removal of pollutants.

[0045] The treatment unit 7 is used for wastewater recycling and treatment, and is located inside the discharge unit 6. The treatment unit 7 is a reaction and separation unit that performs the core wastewater purification function, integrating multiple functions such as physical agitation, chemical mixing, gas-liquid mass transfer, and solid-liquid separation. It is the core location for achieving the goal of high-purity, low-chlorine water quality.

[0046] A drive mechanism 5 is provided to drive the processing unit 7 to rotate. The drive mechanism 5 is fixed to the top of the frame 3. By setting the drive mechanism 5, a stable and controllable rotational power is provided to the processing unit 7, ensuring the mixing efficiency, mass transfer rate, or centrifugal separation effect during the reaction process.

[0047] The processing mechanism 7 includes a stirring box 75, located directly below the second transfer box 9. A liquid suction cylinder 77 is installed inside the stirring box 75, and several water-permeable holes are formed on the outer surface of the bottom of the suction cylinder 77. The stirring box 75 and the suction cylinder 77 constitute the main reaction vessel and internal fluid circulation components of the processing mechanism 7. The stirring box 75, as the main reaction chamber, has a special internal tooth structure that greatly enhances fluid shearing and mixing. The suction cylinder 77 is placed within it, and the water-permeable holes at its bottom allow the treated liquid to pass through, serving as a filter or forming a specific flow field. The combination of these two components is a key structure for achieving efficient processing.

[0048] The storage mechanism 4 includes a storage tank 41, which is fixed to the upper surface of the base frame 1. A water pump 43 penetrates the outer surface of the storage tank 41. A first hose 42 is fixed to the inlet end of the water pump 43, and the end of the first hose 42 extends to the bottom of the inner cavity of the storage tank 41. A second hose 44 is fixed to the outlet end of the water pump 43, and the end of the second hose 44 away from the water pump 43 penetrates the upper surface of the second transfer box 9. The storage tank 41, the first hose 42, the water pump 43, and the second hose 44 together constitute a power system for lifting and transporting wastewater from the storage unit to the upstream treatment unit. The storage tank 41 is the wastewater storage container. The first hose 42 draws in wastewater from the bottom of the storage tank 41. The water pump 43, as the power source for transportation, is a corrosion-resistant chemical pump that provides a stable flow rate and head, lifting the wastewater to the second transfer box 9 located at the top of the frame 3. The second hose 44 is the transportation pipe. This system enables the automatic transport of wastewater from a low to a high level, creating conditions for subsequent gravity-based treatment processes. A third flexible hose 45 passes through the end of the storage tank 41 furthest from the pump 43. A first control valve 46 is fixed to the top of the third flexible hose 45, and a third transfer box 47 is fixed to the end of the first control valve 46. The top of the third transfer box 47 penetrates the outer surface of the first transfer box 8, and a drain pipe 48 penetrates the outer surface of the third transfer box 47. A collection box 2 is movably connected to the upper surface of the base frame 1, and the end of the drain pipe 48 is located directly above the collection box 2. By setting up the third flexible hose 45, the first control valve 46, the third transfer box 47, and the drain pipe 48, a discharge and collection loop for the treated clear liquid is formed. The third flexible hose 45 connects to the storage tank 41. The first control valve 46 controls the connection between the third flexible hose 45 and the third transfer box 47. The third transfer box 47 serves as a buffer and observation chamber, with its outer surface being a transparent acrylic plate for observing water quality. Drain pipe 48 ultimately leads the treated water that meets the standards to collection tank 2. Collection tank 2 is used to store and reuse the purified water. The entire loop achieves controlled collection and resource utilization of the treated product water.

[0049] The drive mechanism 5 includes a connecting frame 51, which is welded to the outer surface of the top of the frame 3. A stepper motor 52 is fixed to the inner wall of the connecting frame 51. A rotating rod 53 is mounted on the output end of the stepper motor 52 via a coupling. A first turntable 54 is fixed to the bottom end of the rotating rod 53. A belt 55 is fitted onto the outer surface of the first turntable 54. A second turntable 56 is connected to the first turntable 54 via the belt 55. The second turntable 56 is welded to the outer surface of the agitator 75. By setting up the connecting frame 51, stepper motor 52, rotating rod 53, first turntable 54, belt 55, and second turntable 56, the rotation system of the drive processing mechanism 7 is constituted. The connecting frame 51 provides cantilever support for the stepper motor 52. The stepper motor 52, as a power source, can precisely control the speed to adapt to the needs of different processing stages. The rotating rod 53 transmits torque. The first turntable 54 serves as the drive wheel. The belt drive 55 has the advantages of buffering, overload protection, and allowing for a certain wheelbase. It can also reduce speed by selecting the pulley diameter ratio, converting the high-speed rotation of the motor into the working speed required by the agitator 75. The second turntable 56 acts as the driven pulley, directly driving the agitator 75 to rotate.

[0050] The discharge mechanism 6 includes a reaction chamber 61, which is fixed at the top of the first transfer chamber 8. A rotating chamber 65 is rotatably connected to the outer surface of the reaction chamber 61 via a first rolling bearing 64. A drain pipe 66 passes through the lower surface of the rotating chamber 65. A second rolling bearing 74 is fixed to the outer surface of the agitator 75, and the outer ring of the second rolling bearing 74 is welded to the inner wall of the rotating chamber 65. By configuring the reaction chamber 61, the first rolling bearing 64, the rotating chamber 65, the drain pipe 66, and the second rolling bearing 74, a rotatable scum and foam collection and discharge chamber is formed. The reaction chamber 61 is a fixed part, where an air flotation reaction occurs, generating scum-laden foam. The first rolling bearing 64 supports the rotation of the rotating chamber 65 relative to the reaction chamber 61. The rotating chamber 65 is a rotatable collection chamber; its rotation can change the communication relationship between the rotating chamber 65 and the reaction chamber 61. The drain pipe 66 is located at the bottom of the rotating chamber 65 and is used to discharge the collected concentrated scum. The second rolling bearing 74 connects the rotational motion of the rotating box 65 with the internal agitator 75, allowing for the possibility of relative or coordinated motion between the two.

[0051] The outer surface of the reaction chamber 61 has several circular holes 63 evenly distributed. Several baffles 67 are fixed to the bottom of the inner wall of the rotating chamber 65, and these baffles 67 are aligned with the circular holes 63. A first barrier strip 62 is welded to the outer surface of the reaction chamber 61, and a second barrier strip 68 is welded to the upper surface of the baffles 67. The first barrier strip 62 and the second barrier strip 68 are fitted together by compression. By setting the circular holes 63, baffles 67, first barrier strip 62, and second barrier strip 68, a rotary dynamic sealing and foam guiding window system is formed. The circular holes 63 are the channel for foam to enter the rotating chamber 65 from the reaction chamber 61. The baffles 67 are fixed to the inner wall of the rotating chamber 65. When the rotating chamber 65 rotates to a specific position, the baffles 67 are offset from the circular holes 63, opening the channel and allowing foam to enter the rotating chamber 65 for collection.

[0052] The lower surface of the second transfer box 9 is welded with a limit ring 10, and the top of the agitator 75 is welded with a ring 710. The ring 710 is slidably connected to the inner cavity of the limit ring 10. The agitator 75 is a cylindrical internal tooth structure, including a cylindrical base and an internal tooth assembly. The cylindrical base is a hollow cylindrical shape. The internal tooth assembly is evenly distributed circumferentially along the inner wall of the cylindrical base. Each internal tooth is a protruding structure extending along the cylindrical axis, and the cross-section of the internal tooth is trapezoidal. The size and spacing of each internal tooth are consistent, and the top of the internal tooth is coplanar with the axis of the cylindrical base. The whole structure is an integrally formed structure. The bottom end of the suction cylinder 77 is welded with a water permeable plate 76, which is welded to the inner wall of the rotating box 65. The suction cylinder 77 is frictionally adapted to the internal tooth assembly on the inner wall of the agitator 75. By setting the limiting ring 10 and the annulus 710, a precision radial limiting and guiding structure is formed at the top of the agitator 75, ensuring that the agitator 75 maintains good coaxiality and stability during high-speed rotation and preventing radial runout. The unique internal tooth structure of the agitator 75 is described; the internal tooth assembly generates strong shearing, tearing, and turbulent effects on the liquid and added reagents within the chamber during rotation, greatly increasing the solid-liquid contact area, promoting mass transfer reagent mixing, and adsorption of contaminants from the aqueous phase to the bubble surface, which is key to achieving efficient air flotation or mixing reactions. The inclusion of a permeable plate 76 and the explicit frictional fit between the suction cylinder 77 and the internal tooth assembly demonstrates that the suction cylinder 77 has relative movement with the agitator 75, and the permeable plate 76 at its bottom allows treated water to enter the suction cylinder 77.

[0053] A connecting frame 711 is welded to the top of the inner wall of the stirring tank 75. Several permeable grooves are formed on the surface of the connecting frame 711. A flow guide 712 is welded to the upper surface of the connecting frame 711. A dripping pipe 71 is fixed to the inner wall of the second transfer tank 9, located directly above the flow guide 712. A second control valve 72 is fixed to the top of the dripping pipe 71, and an inlet pipe 73 is welded to the top of the second control valve 72. By configuring the connecting frame 711, flow guide 712, dripping pipe 71, second control valve 72, and inlet pipe 73, a precise addition and dispersion system for the processing chemicals, including coagulants, pH adjusters, and dechlorinators, is formed. The permeable grooves of the connecting frame 711 allow liquid to pass through. The flow guide 712 evenly disperses the liquid or gas from above across the entire cross-section of the stirring tank 75. The dripping pipe 71 is the injection terminal. The second control valve 72 precisely controls the flow rate and timing of the addition. The inlet pipe 73 connects to an external chemical source. This system ensures instantaneous and uniform mixing of the reagents and wastewater, improving reaction efficiency and reducing reagent usage.

[0054] A rotating cover 714 is welded to the lower surface of the connecting frame 711. The rotating cover 714 is rotatably connected to the inner cavity of the suction cylinder 77. A third rolling bearing 715 is fixed to the outer surface of the rotating cover 714. A protective cover 713 is welded to the outer ring of the third rolling bearing 715. The protective cover 713 is welded to the top of the suction cylinder 77. A support frame 716 is fixed to the inner wall of the rotating cover 714. An internal hexagonal ring 717 is welded to the inner wall of the support frame 716. By setting up the rotating cover 714, the third rolling bearing 715, the protective cover 713, the support frame 716, and the internal hexagonal ring 717, an independently rotatable component and its support structure inside the suction cylinder 77 are formed. The rotating cover 714 is installed inside the protective cover 713 at the top of the suction cylinder 77 via the third rolling bearing 715 and can rotate freely. The support frame 716 provides mounting for the internal hexagonal ring 717. The internal hexagonal ring 717 is a power input interface. It can rotate together with the rotating cover 714 and the stirring box 75.

[0055] A hydraulic cylinder 78 is welded to the lower surface of the first transfer box 8. A switching mechanism 79 is provided at the output end of the hydraulic cylinder 78. The switching mechanism 79 is used to switch the treatment state of wastewater. The switching mechanism 79 includes a moving rod 791, which is located at the output end of the hydraulic cylinder 78. A fixing frame 792 is welded to the outer surface of the moving rod 791. A blocking ring 793 is fixed at the end of the fixing frame 792. The blocking ring 793 is squeezed and adapted to the lower surface of the permeable plate 76. A blocking frame is welded to the top of the moving rod 791. 794, the plugging frame 794 is frictionally fitted to the inner wall of the suction cylinder 77. A drainage groove is provided on the bottom surface of the inner cavity of the plugging frame 794. A limiting block 795 is welded to the bottom surface of the inner cavity of the plugging frame 794. A rotating ring 796 is rotatably connected to the outer surface of the limiting block 795. A hexagonal prism 797 is welded to the upper surface of the rotating ring 796. The hexagonal prism 797 is frictionally fitted to the inner wall of the inner hexagonal ring 717. A support rod 798 is welded to the outer surface of the hexagonal prism 797, and a spiral blade 799 is welded to the end of the support rod 798. By setting up a hydraulic cylinder 78 and a switching mechanism 79, a multifunctional, linkage-type state switching and internal drive system is formed. The hydraulic cylinder 78 provides powerful linear driving force. The switching mechanism 79 has a high degree of integration: the moving rod 791 and the fixed frame 792 transmit hydraulic thrust. The plugging ring 793 cooperates with the permeable plate 76 to seal or open the bottom outlet of the suction cylinder 77, controlling the discharge of treated water. The blocking frame 794 moves up and down within the suction cylinder 77, and its sidewall seal controls the sealing and opening status of the water-permeable holes on the outer surface of the suction cylinder 77. A drainage groove at the bottom of the blocking frame 794 is used for flow guidance. Most importantly, the hexagonal prism 797 is connected to the limiting block 795 via a rotating ring 796 within the blocking frame 794, allowing it to rotate freely. When the hydraulic cylinder 78 pushes the switching mechanism 79 upward, the hexagonal prism 797 inserts into the stationary inner hexagonal ring 717 above, achieving power connection; simultaneously, the spiral blade 799 welded to the hexagonal prism 797 enters the suction cylinder 77. When external power drives the hexagonal prism 797 to rotate via the inner hexagonal ring 717, the spiral blade 799 rotates, pumping the liquid inside the suction cylinder 77 upward or downward, promoting water circulation or sludge discharge. This design cleverly links three functions: "opening and closing the outlet", "lifting and lowering of internal components" and "driving the built-in pumping screw", enabling one-button switching and efficient control of processing states such as mixing, sedimentation, drainage and sludge discharge.

[0056] Working Principle: Wastewater generated during epoxy resin production is first collected in the bottom storage tank 41. The water pump 43 is started, and the wastewater is pumped in through the first hose 42, then lifted through the second hose 44 to the second transfer tank 9 at the top of the unit. Simultaneously, depending on the water quality, necessary treatment agents such as coagulants, dechlorinators, or pH adjusters are added to the system through the inlet pipe 73. The agent flow rate is precisely controlled by the second control valve 72, added dropwise through the drip pipe 71, and evenly dispersed by the guide shroud 712. Under gravity, the wastewater and agents flow together into the agitator 75 below, ready for core treatment.

[0057] The wastewater mixture entering the agitation tank 75 is immediately subjected to a strong physicochemical synergistic treatment environment. The stepper motor 52 of the drive mechanism 5, driven by the belt 55, drives the agitation tank 75 to rotate at high speed. The unique internal toothed structure of the inner wall of the agitation tank 75 generates intense shearing and tearing forces on the liquid, creating high-intensity turbulence. This greatly increases the contact area between the liquid phase and any microbubbles and reagents that may be introduced. Under the combined action of rotational shearing and flotation, organic pollutants, colloids, and some chloride ions in the wastewater are effectively captured and adsorbed onto the surface of the microbubbles, forming a "bubble-impurity" aggregate scum with a density less than water. Meanwhile, the suction cylinder 77 remains relatively stationary or rotates at a low speed.

[0058] As the process proceeds, scum loaded with impurities continuously rises to the surface and accumulates at the top of the reaction chamber 61 in the discharge mechanism 6. The rotating chamber 65 rotates under drive, and when its internal baffle 67 is misaligned with the circular hole 63 on the wall of the reaction chamber 61, the accumulated scum is poured into the rotating chamber 65 for temporary storage and concentration. The concentrated scum is eventually discharged periodically through the drain pipe 66 at the bottom.

[0059] When it is necessary to drain the liquid from the inner cavity of reaction tank 61, the switching mechanism 79 is lowered under the drive of hydraulic cylinder 78. Its top blocking frame 794 completely seals the suction cylinder 77, and simultaneously the blocking ring 793 no longer contacts the permeable plate 76, allowing the liquid in the inner cavity of reaction tank 61 to flow into the inner cavity of the first transfer tank 8 through the permeable plate 76. The purified water is guided through pipelines and finally flows into collection tank 2 through drain pipe 48, completing the collection of high-purity, low-chlorine recovered water. After treatment, all mechanisms reset, ready to enter the next treatment cycle. The entire process achieves automation and high efficiency in wastewater treatment, impurity separation, and water recovery.

[0060] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A wastewater treatment device for the production of high-purity, low-chlorine epoxy resin, characterized in that, include: A base frame (1) is provided with a frame (3) welded to the outer surface of the base frame (1), and a storage mechanism (4) for storing wastewater is fixed on the upper surface of the base frame (1). The first transfer box (8) is welded to the middle section of the frame (3), and the second transfer box (9) is welded to the top of the frame (3). Discharge mechanism (6), which is used to discharge bubbles that have adsorbed impurities, is fixed at the top of the first transfer box (8); The treatment mechanism (7) is used to recycle wastewater and is located in the inner cavity of the discharge mechanism (6). A drive mechanism (5) is used to drive the processing mechanism (7) to rotate, and the drive mechanism (5) is fixed to the top of the frame (3); The processing mechanism (7) includes a stirring box (75), which is located directly below the second transfer box (9). A liquid suction cylinder (77) is provided in the inner cavity of the stirring box (75), and several water-permeable holes are opened on the outer surface of the bottom of the liquid suction cylinder (77). The discharge mechanism (6) includes a reaction box (61), which is fixed at the top of the first transfer box (8). The outer surface of the reaction box (61) is rotatably connected to a rotating box (65) via a first rolling bearing (64). A drain pipe (66) passes through the lower surface of the rotating box (65). A second rolling bearing (74) is fixed on the outer surface of the agitation box (75). The outer ring of the second rolling bearing (74) is welded to the inner wall of the rotating box (65). The lower surface of the second transfer box (9) is welded with a limiting ring (10), and the top of the agitator (75) is welded with a ring (710). The ring (710) is slidably connected to the inner cavity of the limiting ring (10). The agitator (75) is a cylindrical internal tooth structure, including a cylindrical base and an internal tooth assembly. The cylindrical base is a hollow cylindrical shape. The internal tooth assembly is evenly distributed along the inner wall of the cylindrical base. Each internal tooth is a protruding structure extending along the cylindrical axis. The cross-section of the internal tooth is a trapezoidal profile. The size and spacing of each internal tooth are consistent. The top of the internal tooth is coplanar with the axis of the cylindrical base. The whole structure is an integrally formed structure. The bottom end of the suction cylinder (77) is welded with a permeable plate (76). The permeable plate (76) is welded to the inner wall of the rotating box (65). The suction cylinder (77) is frictionally adapted to the internal tooth assembly of the inner wall of the agitator (75).

2. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 1, characterized in that: The storage mechanism (4) includes a liquid storage tank (41), which is fixed on the upper surface of the base frame (1). A water pump (43) is inserted through the outer surface of the liquid storage tank (41). A first hose (42) is fixed at the water inlet end of the water pump (43). The end of the first hose (42) extends to the bottom of the inner cavity of the liquid storage tank (41). A second hose (44) is fixed at the water outlet end of the water pump (43). The end of the second hose (44) away from the water pump (43) penetrates the upper surface of the second transfer box (9).

3. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 2, characterized in that: The storage tank (41) has a third hose (45) extending through one end away from the water pump (43). A first control valve (46) is fixed at the top of the third hose (45). A third transfer box (47) is fixed at the end of the first control valve (46). The top of the third transfer box (47) extends through the outer surface of the first transfer box (8). A drain pipe (48) extends through the outer surface of the third transfer box (47). A collection box (2) is movably connected to the upper surface of the base frame (1). The end of the drain pipe (48) is located directly above the collection box (2).

4. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 1, characterized in that: The drive mechanism (5) includes a connecting frame (51), which is welded to the outer surface of the top of the frame (3). A stepper motor (52) is fixed to the inner wall of the connecting frame (51). A rotating rod (53) is installed at the output end of the stepper motor (52) through a coupling. A first turntable (54) is fixed at the bottom end of the rotating rod (53). A belt (55) is fitted on the outer surface of the first turntable (54). A second turntable (56) is connected to the first turntable (54) through the belt (55). The second turntable (56) is welded to the outer surface of the agitator (75).

5. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 4, characterized in that: The outer surface of the reaction chamber (61) is provided with a number of circular holes (63), and the number of circular holes (63) is evenly distributed. The bottom of the inner wall of the rotating box (65) is fixed with a baffle (67), the number of baffles (67) is also several, and the baffles (67) are aligned with the circular holes (63). A first barrier strip (62) is welded to the outer surface of the reaction chamber (61), and a second barrier strip (68) is welded to the upper surface of the baffle (67). The first barrier strip (62) and the second barrier strip (68) are squeezed and fitted together.

6. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 5, characterized in that: A connecting frame (711) is welded to the top of the inner wall of the stirring box (75). Several water-permeable grooves are opened on the surface of the connecting frame (711). A flow guide (712) is welded to the upper surface of the connecting frame (711). A dripping pipe (71) is fixed to the inner wall of the second transfer box (9). The dripping pipe (71) is located directly above the flow guide (712). A second control valve (72) is fixed to the top of the dripping pipe (71). An inlet pipe (73) is welded to the top of the second control valve (72).

7. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 6, characterized in that: A rotating cover (714) is welded to the lower surface of the connecting frame (711). The rotating cover (714) is rotatably connected to the inner cavity of the suction cylinder (77). A third rolling bearing (715) is fixed to the outer surface of the rotating cover (714). A wrapping cover (713) is welded to the outer ring of the third rolling bearing (715). The wrapping cover (713) is welded to the top of the suction cylinder (77). A support frame (716) is fixed to the inner wall of the rotating cover (714). An inner hexagonal ring (717) is welded to the inner wall of the support frame (716).

8. The wastewater treatment device for the production of high-purity, low-chlorine epoxy resin according to claim 7, characterized in that: A hydraulic cylinder (78) is welded to the lower surface of the first transfer box (8). A switching mechanism (79) is provided at the output end of the hydraulic cylinder (78). The switching mechanism (79) is used to switch the treatment state of wastewater. The switching mechanism (79) includes a moving rod (791). The moving rod (791) is provided at the output end of the hydraulic cylinder (78). A fixing frame (792) is welded to the outer surface of the moving rod (791). A blocking ring (793) is fixed at the end of the fixing frame (792). The blocking ring (793) is squeezed and adapted to the lower surface of the permeable plate (76). A blocking ring is welded to the top of the moving rod (791). The blocking frame (794) is frictionally adapted to the inner wall of the suction cylinder (77). A drainage groove is provided on the bottom surface of the inner cavity of the blocking frame (794). A limiting block (795) is welded to the bottom surface of the inner cavity of the blocking frame (794). A rotating ring (796) is rotatably connected to the outer surface of the limiting block (795). A hexagonal prism (797) is welded to the upper surface of the rotating ring (796). The hexagonal prism (797) is frictionally adapted to the inner wall of the inner hexagonal ring (717). A support rod (798) is welded to the outer surface of the hexagonal prism (797). A spiral blade (799) is welded to the end of the support rod (798).

Images