Wastewater treatment equipment and wastewater treatment process for electrogalvanizing

Abstract

The invention discloses wastewater treatment equipment and a wastewater treatment process for electrogalvanizing, and relates to the field of wastewater treatment equipment. Through cooperation of the mixing pipe, the flow mixing assembly and the flow guide partition plate, the wastewater can be subjected to mixed dosing and precipitation separation in the flowing process without standing dosing and precipitation separation of the wastewater, so that the water flow in the wastewater treatment process keeps flowing all the time, the coordination among the process steps of wastewater treatment is improved, and the wastewater treatment efficiency is improved. The wastewater treatment efficiency is further improved; the hydraulic assembly can drive the valve assembly to be opened through the transmission assembly under the effect of the water inlet pressure of waste water in the mixing pipe, so that chemical agents in the dispensing pool can be synchronously conveyed into the mixing pipe through the agent adding pipe and the valve assembly, and the hydraulic assembly can correspondingly adjust the opening flow of the valve assembly according to the water inlet pressure in the mixing pipe. Therefore, the dosage of the chemical agent is automatically adjusted.

Description

Technical Field

[0001] The present invention belongs to the field of wastewater treatment equipment, and in particular, relates to wastewater treatment equipment and a wastewater treatment process for electrogalvanizing. Background Art

[0002] The water quality of electroplating wastewater is complex and its composition is difficult to control. It contains heavy metal ions and cyanide such as chromium, cadmium, nickel, copper, zinc, gold, silver, etc. Some of them are highly toxic substances that are carcinogenic, teratogenic, and mutagenic. In order to prevent pollution, electroplating wastewater needs to be treated before it can be discharged.

[0003] In the prior art, when treating electroplating wastewater, it is generally firstly to remove large suspended solids, grease and other impurities in the wastewater through a grid pool, and then to mix and add chemicals into the wastewater through a dispensing pool. After that, the heavy metal ions in the wastewater react with the chemicals in the sedimentation pool to form insoluble precipitates, so as to remove the heavy metal ions in the wastewater through precipitation, and finally the wastewater is filtered and disinfected to complete the wastewater treatment. However, in this wastewater treatment process, the wastewater needs to remain in a flowing state in the grid pool, the filtration pool, and the disinfection pool, and in the dispensing pool and the sedimentation pool, in order to ensure the accuracy of the dispensing and improve the precipitation effect, the wastewater needs to be in a static state. As a result, the water flow state in the wastewater treatment process does not always remain flowing, but needs to be adjusted according to the treatment stage and treatment requirements, which will affect the coordination of each process step, thereby reducing the wastewater treatment efficiency. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a wastewater treatment device and a wastewater treatment process for electrogalvanizing to overcome the above-mentioned technical problems existing in the existing related art.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a wastewater treatment device, comprising a pre-treatment mechanism and a post-treatment mechanism, wherein a drug dispensing tank and a drug adding mechanism are arranged between the pre-treatment mechanism and the post-treatment mechanism, wherein the drug adding mechanism comprises a plurality of mixing tubes, wherein the plurality of mixing tubes are connected and installed between the pre-treatment mechanism and the post-treatment mechanism, and are used to transport the wastewater treated in the pre-treatment mechanism to the post-treatment mechanism, wherein a drug adding tube connected to the drug dispensing tank is fixedly installed at the top of the mixing tube, wherein the drug adding tube can transport the chemical agent in the drug dispensing tank to the mixing tube, wherein a mixing flow component is fixedly installed inside the mixing tube, wherein the mixing flow component can evenly mix the chemical agent and the wastewater in flow; A flow regulating mechanism is installed between the mixing tube and the dosing tube; The flow regulating mechanism comprises a hydraulic assembly, a transmission assembly and a valve assembly, wherein the valve assembly is installed in the dosing pipe, the hydraulic assembly is connected and installed at the inlet end of the mixing pipe, and the hydraulic assembly is transmission-connected with the valve assembly through the transmission assembly, so that the hydraulic assembly can adjust the opening flow of the valve assembly through the transmission assembly under the water pressure of the wastewater in the mixing pipe; The post-processing mechanism comprises a sedimentation tank, a filtration tank and a disinfection tank which are connected in sequence, and a plurality of guide baffles which are staggeredly distributed left and right are fixedly installed inside the sedimentation tank.

[0006] Furthermore, the pre-treatment mechanism comprises a grille pool, a filter grille is fixedly installed inside the grille pool; a plurality of filter membranes are fixedly installed inside the filter pool, and an ultraviolet lamp is fixedly installed inside the disinfection pool.

[0007] Furthermore, a bracket is fixedly installed on the top of the medicine dispensing pool, a stirring motor is fixedly installed on the top of the bracket, a stirring shaft extending into the medicine dispensing pool is installed on the output end of the stirring motor, and a stirring blade is fixedly installed on the bottom end of the stirring shaft.

[0008] Furthermore, a filter mesh tube is fixedly installed inside the medicine dispensing pool, and the filter mesh tube is connected to the top end of the medicine adding tube; The mixing flow assembly includes a plurality of mixing guide vanes, which are fixedly installed in sequence inside the mixing tube. The mixing guide vanes can separate the corresponding pipeline parts in the mixing tube to form two guide chambers, and adjacent mixing guide vanes are staggered in sequence.

[0009] Furthermore, the hydraulic assembly includes a hydraulic pipe, which is fixedly installed at the top end of the mixing tube inlet, and a hydraulic plug is slidably installed inside the hydraulic pipe, a pressure spring is abutted against the top end of the hydraulic plug, and a lifting rod extending to the top of the hydraulic pipe is also fixedly installed on the top end of the hydraulic plug.

[0010] Furthermore, the valve assembly includes a valve body, which is connected and installed on the dosing pipe, and valve ports are provided at both ends of the valve body. A valve core is rotatably installed inside the valve body, and a through hole that can communicate with the valve port is opened on the valve core. A valve stem extending to the outside of the valve body is fixedly installed at one end of the valve core.

[0011] Furthermore, the transmission assembly includes a rack, a transmission shaft and a driven wheel, the rack is fixedly mounted on the top end of the lifting rod, the transmission shaft is rotatably mounted on one side of the rack, one end of the transmission shaft is fixedly mounted with a transmission gear meshing with the rack, the other end of the transmission shaft is fixedly mounted with a transmission wheel, the driven wheel is fixedly mounted on the outer end of the valve stem, and the transmission wheel and the driven wheel are connected by a transmission belt.

[0012] Furthermore, a threaded sleeve located on the outer ring of the lifting rod is rotatably installed at the top end of the hydraulic pipe, and an adjustment plate is installed on the outer ring of the threaded sleeve through external thread transmission, and a plurality of adjustment rods are fixedly installed at the bottom end of the adjustment plate, and the bottom end of the adjustment rod slides and extends to the interior of the hydraulic pipe, and a pressure plate slidably connected to the inner wall of the hydraulic pipe is fixedly installed at the bottom end of the adjustment rod, and the pressure plate abuts against the top end of the pressure spring.

[0013] Furthermore, a driving shaft is rotatably installed on one side below the medicine dispensing pool, one end of the driving shaft is transmission-connected to an adjusting motor, a plurality of active bevel gears corresponding one-to-one to the corresponding hydraulic pipes are fixedly installed on the driving shaft, a plurality of adjusting shafts corresponding one-to-one to the active bevel gears are rotatably installed below the driving shaft, a driven bevel gear meshingly connected to the corresponding active bevel gear is fixedly installed on the top of the adjusting shaft, a driven gear is fixedly installed on the bottom end of the adjusting shaft, and a gear ring meshingly connected to the driven gear is fixedly installed on the outer ring of the threaded sleeve.

[0014] The invention also discloses a wastewater treatment process for electrogalvanizing, which uses the wastewater treatment equipment.

[0015] The present invention has the following beneficial effects: 1. In the present invention, wastewater is transported through a mixing tube, and at the same time, a dosing tube transports the chemical agent in the dosing tank into the mixing tube. At this time, the mixing component evenly mixes the flowing chemical agent and wastewater, thereby realizing the flow mixing of the wastewater and the chemical agent. At the same time, a plurality of guide baffles staggered left and right are arranged in the sedimentation tank, and the sedimentation tank can be isolated by the guide baffle to form a long flow channel, thereby increasing the flow time of the wastewater in the sedimentation tank, so that the heavy metal ions in the wastewater have enough time to react with the chemical agent to generate precipitates during the flow process, and the precipitates are gradually precipitated and separated during the flow of the wastewater; through the coordination of the mixing tube, the mixing component and the guide baffle, the wastewater can complete the dosing and precipitation separation process during the flow process, without the need to stand the wastewater for dosing and precipitation separation, so that the water flow in the wastewater treatment process keeps flowing, and there is no need to adjust the water flow state according to the treatment stage and treatment requirements, thereby improving the coordination between the various process steps of wastewater treatment, and thus improving the wastewater treatment efficiency.

[0016] 2. In the present invention, when wastewater enters the mixing tube, the hydraulic component can drive the valve component to open through the transmission component under the action of the inlet water pressure of the wastewater in the mixing tube, so that the chemical agents in the preparation tank can be synchronously transported to the mixing tube through the dosing pipe and the valve component, making the opening of the valve component and the liquid medicine delivery process more convenient and quick, and the hydraulic component can adjust the opening flow of the valve component according to the size of the inlet water pressure in the mixing tube, thereby automatically adjusting the dosage of the chemical agent, so that the chemical agents in the preparation tank are always added to the wastewater in an appropriate proportion, thereby improving the treatment effect of the wastewater.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0019] Figure 1 This is one of the three-dimensional structural schematic diagrams of the wastewater treatment equipment of the present invention; Figure 2 This is the second schematic diagram of the three-dimensional structure of the wastewater treatment equipment of the present invention; Figure 3 For the present invention Figure 2 A local enlarged structural schematic diagram; Figure 4 A top view of the wastewater treatment equipment of the present invention; Figure 5 The third schematic diagram of the three-dimensional structure of the wastewater treatment equipment of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at B; Figure 7 The fourth schematic diagram of the three-dimensional structure of the wastewater treatment equipment of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the local enlarged structure at C; Fig. 9 For the present invention Figure 7 Schematic diagram of the local enlarged structure at D.

[0020] In the figure: 1, grid pool; 11, filter grid; 2, dispensing pool; 21, bracket; 22, stirring motor; 23, stirring shaft; 24, stirring blade; 3, sedimentation tank; 31, guide baffle; 4, filter tank; 41, filter membrane; 5, disinfection tank; 51, ultraviolet lamp; 6, dosing mechanism; 61, mixing tube; 62, filter mesh tube; 63, dosing tube; 64, mixing guide plate; 7, flow regulating mechanism; 71, hydraulic pipe; 72, valve body; 73, regulating motor; 74, lifting rod; 75 , transmission wheel; 76, transmission belt; 77, rack; 78, transmission shaft; 79, transmission gear; 710, driven wheel; 711, valve stem; 712, gear ring; 713, threaded sleeve; 714, adjustment plate; 715, adjustment rod; 716, adjustment shaft; 717, driven gear; 718, pressure plate; 719, pressure spring; 720, hydraulic plug; 721, valve port; 722, valve core; 723, through hole; 724, drive shaft; 725, active bevel gear; 726, driven bevel gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0023] See also Figure 1-Figure 4 As shown, the present invention is a wastewater treatment equipment, including a pre-treatment mechanism and a post-treatment mechanism, a drug dispensing tank 2 and a drug adding mechanism 6 are arranged between the pre-treatment mechanism and the post-treatment mechanism, the drug adding mechanism 6 includes a plurality of mixing tubes 61, the plurality of mixing tubes 61 are connected and installed between the pre-treatment mechanism and the post-treatment mechanism, and are used to transport the wastewater treated in the pre-treatment mechanism to the post-treatment mechanism, a drug adding tube 63 connected to the drug dispensing tank 2 is fixedly installed at the top of the mixing tube 61, the drug adding tube 63 can transport the chemical agent in the drug dispensing tank 2 to the mixing tube 61, and a mixing flow component is fixedly installed inside the mixing tube 61, and the mixing flow component can evenly mix the flowing chemical agent and wastewater; A flow regulating mechanism 7 is installed between the mixing tube 61 and the dosing tube 63; The flow regulating mechanism 7 includes a hydraulic component, a transmission component and a valve component. The valve component is installed in the dosing pipe 63. The hydraulic component is connected and installed at the inlet end of the mixing pipe 61. The hydraulic component is connected to the valve component through the transmission component, so that the hydraulic component can adjust the opening flow of the valve component through the transmission component under the water pressure of the wastewater in the mixing pipe 61. The post-processing mechanism includes a sedimentation tank 3, a filtration tank 4 and a disinfection tank 5 which are connected in sequence. A plurality of guide baffles 31 which are staggeredly distributed left and right are fixedly installed inside the sedimentation tank 3. During the wastewater treatment process, the wastewater that has been preliminarily treated by the pretreatment mechanism is first transported to the sedimentation tank 3 through the mixing tube 61. At this time, the hydraulic component drives the valve component to open through the transmission component under the action of the inlet water pressure of the wastewater in the mixing tube 61, so that the chemical agent in the dispensing tank 2 is synchronously transported to the mixing tube 61 through the dosing pipe 63 and the valve component, and the chemical agent and the wastewater are evenly mixed under the action of the mixing flow component during the transportation from the mixing tube 61 to the sedimentation tank 3. After that, the wastewater is transported to the sedimentation tank 3 and slowly transported to the filter tank 4 along the flow channel formed by the isolation of the guide baffle 31 in the sedimentation tank 3. In the process of wastewater flow transportation, the chemical agent reacts with the heavy metal ions in the wastewater to generate precipitates. At the same time, the precipitates gradually settle to the bottom of the tank during the flow of the wastewater, completing the separation from the wastewater. After that, the wastewater is filtered and disinfected in the filter tank 4 and the disinfection tank 5 in turn to complete the wastewater treatment process. Through the cooperation of the mixing tube 61, the mixing flow component and the guide baffle 31, the wastewater can complete the mixing, dosing and sedimentation separation process during the flow process without the need to leave the wastewater to dosing and sedimentation separation, so that the water flow in the wastewater treatment process can always keep flowing, without the need to adjust the water flow state according to the treatment stage and treatment requirements, thereby improving the coordination between the various process steps of wastewater treatment, and thus improving the wastewater treatment efficiency; the hydraulic component can drive the valve component to open through the transmission component under the action of the inlet water pressure of the wastewater in the mixing tube 61, so that the chemical agent in the preparation tank 2 can be synchronously transported to the mixing tube 61 through the dosing tube 63 and the valve component, making the opening of the valve component and the liquid delivery process more convenient and quick, and the hydraulic component can adjust the opening flow of the valve component according to the size of the inlet water pressure in the mixing tube 61, thereby automatically adjusting the dosage of the chemical agent, so that the chemical agent in the preparation tank 2 is always added to the wastewater in an appropriate proportion, thereby improving the treatment effect of the wastewater.

[0024] See also Figure 1-Figure 3 As shown, the difference between this embodiment and the above embodiment is that the pre-treatment mechanism includes a grille pool 1, and a filter grille 11 is fixedly installed inside the grille pool 1; a plurality of filter membranes 41 are fixedly installed inside the filter pool 4, and an ultraviolet lamp 51 is fixedly installed inside the disinfection pool 5; Among them, when the wastewater flows through the grid pool 1, the filter grid 11 intercepts and removes large particles of suspended matter and floating matter in the wastewater, and then after adding drugs through the mixing tube 61, it flows and settles in the sedimentation tank 3 to remove heavy metal ions in the wastewater. After that, the impurities in the wastewater are further filtered through the filter membrane 41 in the filter tank 4. Finally, when the wastewater flows through the disinfection tank 5, the ultraviolet lamp 51 sterilizes and disinfects the wastewater to complete the wastewater treatment process.

[0025] See also Figure 1-Figure 3 As shown, the difference between this embodiment and the above embodiment is that a bracket 21 is fixedly installed on the top of the dispensing pool 2, a stirring motor 22 is fixedly installed on the top of the bracket 21, a stirring shaft 23 extending into the inside of the dispensing pool 2 is driven and installed at the output end of the stirring motor 22, and a stirring blade 24 is fixedly installed at the bottom end of the stirring shaft 23; when dispensing, the pharmaceutical raw materials and the preparation solution are added into the dispensing pool 2, and then the stirring motor 22 drives the stirring shaft 23 and the stirring blade 24 to rotate, and the pharmaceutical raw materials and the preparation solution are fully mixed by stirring to complete the preparation of the chemical agent; Furthermore, a filter mesh tube 62 is fixedly installed inside the medicine preparation pool 2, and the filter mesh tube 62 is connected to the top of the dosing tube 63. By setting the filter mesh tube 62, impurities and undissolved pharmaceutical raw materials in the medicine preparation pool 2 can be intercepted and filtered to prevent the impurities and pharmaceutical raw materials in the medicine preparation pool 2 from entering the mixing tube 61.

[0026] See also Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, the difference between this embodiment and the above embodiment is that the flow mixing assembly includes a plurality of mixing guide vanes 64, and the plurality of mixing guide vanes 64 are sequentially fixedly installed inside the mixing tube 61, and the mixing guide vanes 64 can separate the corresponding pipe parts in the mixing tube 61 to form two guide chambers, and the adjacent mixing guide vanes 64 are sequentially staggered. Among them, the mixing guide plate 64 is an arc-shaped blade. When the mixed liquid of wastewater and chemical agents in the mixing tube 61 flows through the mixing guide plate 64, the mixing guide plate 64 can divide and guide the mixed liquid. When the wastewater and chemical agents flow through the next mixing guide plate 64, they are divided and guided again by the staggered mixing guide plates 64. This reciprocating process can make the wastewater and chemical agents fully and evenly mixed through multiple divisions and diversions, thereby realizing the flow-dosing mixing of the wastewater.

[0027] See also Figure 2 , Figure 3 , Figure 5-Figure 9As shown, the difference between this embodiment and the above embodiment is that the hydraulic assembly includes a hydraulic pipe 71, which is fixedly installed at the top of the inlet of the mixing pipe 61, and a hydraulic plug 720 is installed in the hydraulic pipe 71 in a sealing and sliding manner. A pressure spring 719 is installed at the top of the hydraulic plug 720, and a lifting rod 74 extending above the hydraulic pipe 71 is also fixedly installed at the top of the hydraulic plug 720; the valve assembly includes a valve body 72, which is connected and installed on the dosing pipe 63, and valve ports 721 are provided at both ends of the valve body 72, and a valve core 722 is installed in the valve body 72 in a sealing and rotatable manner. The valve core 722 is provided with a A through hole 723 that can communicate with the valve port 721, a valve stem 711 extending to the outside of the valve body 72 is fixedly installed at one end of the valve core 722; the transmission assembly includes a rack 77, a transmission shaft 78 and a driven wheel 710, the rack 77 is fixedly installed at the top of the lifting rod 74, the transmission shaft 78 is rotatably installed on one side of the rack 77, one end of the transmission shaft 78 is fixedly installed with a transmission gear 79 meshing and transmission connected with the rack 77, the other end of the transmission shaft 78 is fixedly installed with a transmission wheel 75, the driven wheel 710 is fixedly installed on the outer end of the valve stem 711, and the transmission wheel 75 and the driven wheel 710 are connected through a transmission belt 76; The hydraulic plug 720 is initially located at the lower end of the hydraulic pipe 71 under the pressure of the pressure spring 719, and at this time, the through hole 723 on the valve core 722 is staggered from the valve port 721, so that the valve body 72 is in a sealed state; when the waste water flows through the mixing pipe 61, the waste water enters the hydraulic pipe 71 from the mixing pipe 61, and the hydraulic plug 720 is driven to move upward by the hydraulic pressure during the waste water transportation. At this time, the hydraulic plug 720 drives the rack 77 to move upward through the lifting rod 74, so that the rack 77 meshes with the driving gear 79 to rotate, so that the hydraulic plug 720 can move upward. The transmission gear 79 drives the transmission shaft 78 and the transmission wheel 75 to rotate synchronously, and the transmission wheel 75 drives the driven wheel 710 to rotate through the transmission belt 76. When the driven wheel 710 rotates, it drives the valve stem 711 and the valve core 722 to rotate, so that the through hole 723 on the valve core 722 gradually overlaps with the valve ports 721 at both ends of the valve body 72, so that the chemical agent at the upper end of the dosing pipe 63 can flow through the valve port 721 and the through hole 723 through the valve body 72 and be transported to the mixing pipe 61 at the lower end, so that automatic dosing can be achieved during wastewater transportation; When the water pressure and flow rate of the wastewater in the mixing tube 61 increase, the water pressure in the hydraulic pipe 71 increases synchronously. At this time, the hydraulic plug 720 continues to move upward under the action of the water pressure, thereby driving the valve core 722 to continue to rotate, so that the overlap between the through hole 723 on the valve core 722 and the valve port 721 increases, thereby increasing the flow rate of the liquid medicine, thereby increasing the dosage. Correspondingly, when the water pressure and flow rate of the wastewater in the mixing tube 61 decrease, the water pressure in the hydraulic pipe 71 decreases synchronously. At this time, the hydraulic plug 720 is pressed against the pressure spring 71. 9 moves downward under the elastic force of the valve core 722, thereby driving the valve core 722 to rotate in the opposite direction and reset, so that the overlap between the through hole 723 on the valve core 722 and the valve port 721 is reduced, thereby reducing the flow rate of the liquid medicine, thereby reducing the amount of medicine added. Therefore, through the cooperation of the hydraulic component and the transmission component, not only can the valve be automatically opened for medicine addition during wastewater transportation, but also the amount of medicine added can be adjusted accordingly when the water pressure and flow rate of the wastewater transportation change, so that the wastewater and the chemical agent are always mixed in proportion at an appropriate ratio, which can improve the treatment effect of the wastewater.

[0028] See also Figure 5 , Figure 6 , Figure 7 , Fig. 9 As shown, the difference between this embodiment and the above embodiment is that a threaded sleeve 713 located on the outer ring of the lifting rod 74 is rotatably installed at the top of the hydraulic pipe 71, and an adjustment plate 714 is installed on the outer ring of the threaded sleeve 713 through external thread transmission. A plurality of adjustment rods 715 are fixedly installed at the bottom end of the adjustment plate 714. The bottom ends of the adjustment rods 715 slide and extend into the interior of the hydraulic pipe 71, and a pressure plate 718 slidably connected to the inner wall of the hydraulic pipe 71 is fixedly installed at the bottom end of the adjustment rod 715, and the pressure plate 718 abuts against the top of the pressure spring 719; a drive shaft 72 is rotatably installed on one side below the dispensing tank 2. 4. One end of the driving shaft 724 is connected to the adjusting motor 73 in a transmission manner. A plurality of active bevel gears 725 corresponding to the corresponding hydraulic pipes 71 are fixedly mounted on the driving shaft 724. A plurality of adjusting shafts 716 corresponding to the active bevel gears 725 are rotatably mounted below the driving shaft 724. A driven bevel gear 726 meshingly connected to the corresponding active bevel gear 725 is fixedly mounted on the top of the adjusting shaft 716. A driven gear 717 is fixedly mounted on the bottom of the adjusting shaft 716. A gear ring 712 meshingly connected to the driven gear 717 is fixedly mounted on the outer ring of the threaded sleeve 713. Among them, the driving shaft 724 can be driven to rotate by the adjusting motor 73, so as to drive the multiple active bevel gears 725 on the driving shaft 724 to rotate synchronously. At this time, the active bevel gear 725 meshes and drives the driven bevel gear 726 to rotate synchronously, so as to drive the adjusting shaft 716 and the driven gear 717 to rotate, and then the driven gear 717 meshes and drives the ring gear 712 to rotate, thereby driving the threaded sleeve 713 to rotate through the ring gear 712, and the adjusting motor 73 is a forward and reverse motor, and the threaded sleeve 713 can be driven to rotate forward or reversely by the adjusting motor 73. When the threaded sleeve 713 rotates forward, it drives the adjusting plate 714 to move downward through the thread transmission. When the threaded sleeve 713 is reversed, it drives the adjusting plate 714 to move upward through the threaded transmission. At this time, the adjusting plate 714 drives the pressing plate 718 to move upward through the adjusting rod 715, so that the pressing plate 718 moves the hydraulic plug 720 downward by abutting against the pressure spring 719, and then the hydraulic plug 720 drives the valve core 722 to rotate in the opposite direction through the transmission component, so that the overlap between the through hole 723 on the valve core 722 and the valve port 721 is reduced, thereby reducing the flow rate of the liquid medicine, thereby reducing the dosage; and when the threaded sleeve 713 is reversed, it drives the adjusting plate 714 to move upward through the threaded transmission. At this time, the adjusting plate 714 drives the pressing plate 718 to move upward through the adjusting rod 715, so that the pressing plate 718 relaxes the abutment against the pressure spring 719. At this time, the hydraulic plug 720 is abutted upward under the action of water pressure, and the pressure spring 719 is squeezed and contracted again, thereby causing the hydraulic plug 720 to drive the valve core 722 to rotate through the transmission component, so that the overlap between the through hole 723 on the valve core 722 and the valve port 721 is increased, thereby increasing the flow rate of the liquid medicine, thereby increasing the dosage; By raising and lowering the position of the pressure plate 718, the valve opening size and the amount of chemical agent added can be adjusted while the wastewater delivery flow and water pressure remain unchanged, thereby facilitating the treatment of wastewater of different concentrations and improving the applicability of the wastewater treatment equipment.

[0029] See also Figure 1-Figure 9 As shown, this embodiment discloses a wastewater treatment process for electrogalvanizing, and the specific steps are as follows: First, the wastewater generated by electrogalvanizing is transported to the grid pool 1. When the wastewater flows in the grid pool 1, it is intercepted by the filter grid 11 to remove large suspended solids and floating objects in the wastewater. Then, the wastewater is transported to the sedimentation tank 3 through the mixing tube 61. At this time, the hydraulic component drives the valve component to open through the transmission component under the water pressure of the wastewater in the mixing tube 61, so that the chemical agent in the dispensing pool 2 is synchronously transported to the mixing tube 61 through the dosing pipe 63 and the valve component. In the process of being transported from the mixing tube 61 to the sedimentation tank 3, the chemical agent and the wastewater are evenly mixed under the action of the mixing flow component. Afterwards, the wastewater mixed with chemicals is transported to the sedimentation tank 3, and is slowly transported toward the filter tank 4 along the flow channel formed by the isolation of the guide baffle 31 in the sedimentation tank 3. During the flow and transportation of the wastewater, the chemicals react with the heavy metal ions in the wastewater to generate precipitates. At the same time, the precipitates gradually settle to the bottom of the tank during the flow of the wastewater, completing the separation from the wastewater. Afterwards, the wastewater is filtered and disinfected in the filter tank 4 and the disinfection tank 5 in turn to complete the wastewater treatment process.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A wastewater treatment device, comprising a pre-treatment mechanism and a post-treatment mechanism, characterized in that: A drug dispensing tank and a drug adding mechanism are arranged between the pre-treatment mechanism and the post-treatment mechanism, and the drug adding mechanism includes a plurality of mixing tubes, and the plurality of mixing tubes are connected and installed between the pre-treatment mechanism and the post-treatment mechanism, and are used to transport the wastewater treated in the pre-treatment mechanism to the post-treatment mechanism, and a drug adding tube connected to the drug dispensing tank is fixedly installed on the top of the mixing tube, and the drug adding tube can transport the chemical agent in the drug dispensing tank to the mixing tube, and a mixing flow component is fixedly installed inside the mixing tube, and the mixing flow component can evenly mix the flowing chemical agent and wastewater; A flow regulating mechanism is installed between the mixing tube and the dosing tube; The flow regulating mechanism comprises a hydraulic assembly, a transmission assembly and a valve assembly, wherein the valve assembly is installed in the dosing pipe, the hydraulic assembly is connected and installed at the inlet end of the mixing pipe, and the hydraulic assembly is transmission-connected with the valve assembly through the transmission assembly, so that the hydraulic assembly can adjust the opening flow of the valve assembly through the transmission assembly under the water pressure of the wastewater in the mixing pipe; The post-processing mechanism comprises a sedimentation tank, a filtration tank and a disinfection tank which are connected in sequence, and a plurality of guide baffles which are staggeredly distributed left and right are fixedly installed inside the sedimentation tank.

2. A wastewater treatment equipment according to claim 1, characterized in that: The pre-treatment mechanism comprises a grille pool, a filter grille is fixedly installed inside the grille pool; a plurality of filter membranes are fixedly installed inside the filter pool, and an ultraviolet lamp is fixedly installed inside the disinfection pool.

3. A wastewater treatment equipment according to claim 1, characterized in that: A bracket is fixedly installed on the top of the medicine dispensing pool, a stirring motor is fixedly installed on the top of the bracket, a stirring shaft extending into the medicine dispensing pool is driven and installed on the output end of the stirring motor, and a stirring blade is fixedly installed on the bottom end of the stirring shaft.

4. A wastewater treatment equipment according to claim 1, characterized in that: A filter mesh tube is fixedly installed inside the medicine dispensing pool, and the filter mesh tube is connected to the top of the medicine adding tube; The mixing flow assembly includes a plurality of mixing guide vanes, which are fixedly installed in sequence inside the mixing tube. The mixing guide vanes can separate the corresponding pipeline parts in the mixing tube to form two guide chambers, and adjacent mixing guide vanes are staggered in sequence.

5. A wastewater treatment equipment according to claim 1, characterized in that: The hydraulic assembly includes a hydraulic pipe, which is fixedly installed at the top end of the mixing tube inlet. A hydraulic plug is installed in the internal sealing sliding of the hydraulic pipe, a pressure spring is installed in abutment with the top end of the hydraulic plug, and a lifting rod extending above the hydraulic pipe is also fixedly installed at the top end of the hydraulic plug.

6. A wastewater treatment equipment according to claim 5, characterized in that: The valve assembly includes a valve body, which is connected and installed on the dosing pipe. Both ends of the valve body are provided with valve ports. A valve core is rotatably installed inside the valve body in a sealing manner. A through hole that can communicate with the valve port is opened on the valve core. A valve stem extending to the outside of the valve body is fixedly installed at one end of the valve core.

7. A wastewater treatment equipment according to claim 6, characterized in that: The transmission assembly includes a rack, a transmission shaft and a driven wheel, the rack is fixedly mounted on the top end of the lifting rod, the transmission shaft is rotatably mounted on one side of the rack, one end of the transmission shaft is fixedly mounted with a transmission gear meshing with the rack, the other end of the transmission shaft is fixedly mounted with a transmission wheel, the driven wheel is fixedly mounted on the outer end of the valve stem, and the transmission wheel and the driven wheel are connected by a transmission belt.

8. A wastewater treatment equipment according to claim 5, characterized in that: A threaded sleeve located on the outer ring of the lifting rod is rotatably installed at the top of the hydraulic pipe, and an adjustment plate is installed on the outer ring of the threaded sleeve through external thread transmission. A plurality of adjustment rods are fixedly installed at the bottom end of the adjustment plate. The bottom end of the adjustment rod slides and extends to the interior of the hydraulic pipe, and a pressure plate slidably connected to the inner wall of the hydraulic pipe is fixedly installed at the bottom end of the adjustment rod, and the pressure plate abuts against the top end of the pressure spring.

9. A wastewater treatment equipment according to claim 8, characterized in that: A driving shaft is rotatably installed on one side below the medicine dispensing pool, one end of the driving shaft is transmission-connected with an adjusting motor, a plurality of active bevel gears corresponding to the corresponding hydraulic pipes are fixedly installed on the driving shaft, a plurality of adjusting shafts corresponding to the active bevel gears are rotatably installed below the driving shaft, a driven bevel gear meshing and transmission-connected with the corresponding active bevel gear is fixedly installed on the top of the adjusting shaft, a driven gear is fixedly installed on the bottom end of the adjusting shaft, and a gear ring meshing and transmission-connected with the driven gear is fixedly installed on the outer ring of the threaded sleeve.

10. A process for treating wastewater from electrogalvanizing, characterized in that: The wastewater treatment equipment according to any one of claims 1 to 9 is used.

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