A pretreatment device applied in electroplating wastewater treatment equipment

Abstract

The application relates to the technical field of electroplating wastewater treatment, and particularly discloses a pretreatment device applied to an electroplating wastewater treatment equipment, which comprises a supporting mechanism, a wastewater treatment mechanism, a water pumping mechanism and a screw rod driving mechanism are arranged on the supporting mechanism respectively; the water pumping mechanism and the screw rod driving mechanism are arranged on the two sides of the wastewater treatment mechanism respectively. The electroplating wastewater can be accommodated in the treatment tank in the wastewater treatment mechanism, the wastewater can be injected into the treatment tank through a water inlet interface, and the medicament can be injected into the treatment tank through a feeding interface, so that the heavy metal ions are removed and the acid-base solution is added; the rotation of the stirring shaft driven by the stirring motor can make the stirring blades stir the mixed solution of the wastewater and the medicament, so that the reaction effect is improved; after the stirring is completed, the precipitation and the layered treatment of the treated water are carried out through standing.

Description

Technical Field

[0001] This invention relates to the field of electroplating wastewater treatment technology, and specifically discloses a pretreatment device used in electroplating wastewater treatment equipment. Background Technology

[0002] Electroplating wastewater refers to wastewater containing metal ions, organic matter, and other harmful substances generated during the electroplating process. Electroplating is a technology that forms a protective or decorative coating on a metal surface through electrolysis and is widely used in manufacturing. However, the electroplating process generates large amounts of wastewater containing heavy metals (such as chromium, nickel, zinc, and copper) and chemical agents. If this wastewater is discharged directly without treatment, it will cause serious harm to the environment and human health.

[0003] According to authorization announcement number CN111792717A, a pretreatment device for electroplating wastewater treatment equipment is disclosed, including a wastewater discharge pipe and a resin softening device. The resin softening device has through holes on both sides, through which liquid guide pipes are fixedly connected. A high-recovery-rate membrane device is connected to the resin softening device via the liquid guide pipe on its right side, and an auxiliary device is connected to the resin softening device via the liquid guide pipe on its left side. The surface of the liquid guide pipe penetrates the right side of the housing and is fixedly connected to the housing. The surface of the wastewater discharge pipe penetrates the left side of the housing and is fixedly connected to the housing. This invention, through the combined use of the above structures, solves the problems in actual use where the control valve cannot achieve automatic and uniform dosing of NaOH and NaHCO3, resulting in inaccurate wastewater pretreatment and insufficient mixing between the wastewater and NaOH and NaHCO3, causing inconvenience and reducing work efficiency.

[0004] Currently, when performing advanced treatment of electroplating wastewater, pretreatment is required. Pretreatment mainly involves adding chemical agents, acid and alkali solutions, and allowing the water to settle. This pre-adjusts the metal ions, turbidity, and pH value in the wastewater to facilitate the quality of subsequent biological treatment. However, after treatment, when the wastewater on top of the sediment needs to be extracted, most pumping structures lack filtration. This results in excessive waste being carried into the next stage of water delivery. This waste not only affects the treatment quality but also occupies space, indirectly reducing the amount of wastewater that can be treated. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a pretreatment device for use in electroplating wastewater treatment equipment, so as to solve the problem that a large amount of waste material will be carried when the wastewater needs to be discharged to the next stage after the current pretreatment is completed.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pretreatment device used in electroplating wastewater treatment equipment, comprising a support mechanism, wherein a wastewater treatment mechanism, a pumping mechanism and a lead screw drive mechanism are respectively arranged on the support mechanism; The pumping mechanism and the screw drive mechanism are respectively located on both sides of the wastewater treatment mechanism.

[0007] Furthermore, the support mechanism includes a base, and a column is provided on one side of the base; Several horizontal bars are set between the two columns, and the horizontal bars are distributed vertically at equal intervals. The upper ends of the two columns are fixed with support plates.

[0008] Furthermore, the wastewater treatment mechanism includes a treatment tank, and the lower end of the treatment tank is provided with support legs; A feeding port is provided through the upper end of one side of the treatment tank, and a first valve is provided on the surface of the feeding port. A water inlet is provided through the upper end of the front side of the treatment tank, and a second valve is provided on the surface of the water inlet. A waste discharge port is provided through the lower end of the treatment tank, and a third valve is provided on the surface of the treatment tank.

[0009] Furthermore, the upper end of the processing tank is covered with an end cap, a rod sleeve is provided through one side of the end cap, a connecting rod is provided through the inside of the rod sleeve, a filter plate is provided at the lower end of the connecting rod, and a number of filter holes are opened on the surface of the filter plate through its interior. A sleeve is installed through the center of the end cap, and a telescopic tube is installed through the inside of the sleeve. A transition tube is slidably fitted onto the surface of the telescopic tube.

[0010] Furthermore, a flow guide shroud is provided at the lower end of the filter plate. The flow guide shroud is a circular hollow structure. A positioning bearing is provided at the center of the flow guide shroud. A positioning shaft is provided through the interior of the positioning bearing. The upper end of the positioning shaft is interference-fitted with the inner ring wall of the positioning bearing. Several flow guide blades are provided on the surface of the positioning shaft. The outer ring wall of the flow guide has several flow guide nozzles, which are interconnected with the flow guide.

[0011] Furthermore, sealed bearings are installed through both sides of the bottom of the processing tank, and the same stirring shaft is installed through the interior of both sealed bearings. The stirring shaft and the inner ring wall of the sealed bearing are interference-fitted with each other, and several stirring blades are fixedly installed on the surface of the stirring shaft. The processing tank is equipped with an external stirring motor, and the stirring motor has an internal stirring shaft for driving. The end of the stirring shaft and the stirring rod are fixed to each other by a coupling.

[0012] Furthermore, the pumping mechanism includes a water pump, which is installed above the support plate. The outlet of the water pump is fixedly connected to a drain pipe, and the inlet of the water pump is connected to a connecting pipe.

[0013] Furthermore, the connecting tube is provided with an inner cylinder, and a limit block is fixed on the inner wall of the connecting tube. One side of the limit block is closely attached to the end face of the connecting tube, and the inner cylinder is located near the lower end port of the connecting tube. The outer ring wall of the inner cylinder is provided with external threads, and the inner ring wall of the connecting pipe is provided with internal threads. The internal threads and external threads are threadedly connected to each other. A knob is provided on the inner wall of the inner tube near the port of the connecting pipe. There are at least two knobs, which are symmetrically distributed on the inner wall of the inner tube. One end of the knob is fixedly connected to the inner wall of the inner tube by a screw.

[0014] Furthermore, a support bearing is provided at the center of the inner cylinder, a filter screen is fixedly sleeved on the surface of the support bearing, a support shaft is provided through the inside of the support bearing, and several vortex blades are provided at the upper end of the support shaft. A slat is fixed to the lower end of the support shaft, and a scraper is fixed to the upper end of the slat. The upper end of the scraper is in close contact with the lower end of the filter screen.

[0015] Furthermore, the lead screw drive mechanism includes a side frame, a drive motor is provided at the lower end of the side frame, a drive shaft for driving is provided inside the drive motor, and a lead screw is fixed to the end of the drive shaft through a coupling. A threaded sleeve is threadedly connected to the surface of the lead screw. A side platform is fixed to the inward side of the side frame, and a rotating seat is fixed to the upper end of the side platform. The lower end of the lead screw is rotated with the rotating seat. A circular hole is provided in the middle of the side frame, and the hole corresponds to the position of the feeding interface.

[0016] The working principle and beneficial effects of this solution are as follows: 1. Electroplating wastewater can be collected through the treatment tank in the wastewater treatment mechanism. Wastewater can be injected into the treatment tank through the water inlet, and chemicals can be injected into the treatment tank through the feeding interface to remove heavy metal ions and add acid and alkaline solutions. The stirring motor drives the stirring shaft to rotate, so that the stirring blades can stir the mixture of wastewater and chemicals to improve the reaction effect. After stirring, the water is allowed to settle and separate into layers. 2. As described in 1, when pumping is required, the rotation of the lead screw is achieved by the drive motor shaft. The lead screw drives the threaded sleeve to move, and the connecting rod slides in the sleeve, which achieves the limiting effect of the lead screw. Thus, the connecting rod can slide up and down in the sleeve, and drive the filter plate to move up and down in the treatment tank. When the filter plate moves, it slides in the sleeve through the telescopic tube, which can move up and down with the filter plate. The transition tube can serve as a transition and support, so that it can be connected to the connecting pipe connected to the water pump inlet. Through the pumping effect of the water pump, after the filter plate moves down and is filtered through the filter holes, the filtered wastewater is pumped into the transition tube through the telescopic tube, and then into the water pump through the connecting pipe. Finally, it is sent to the next stage through the drain pipe. 3. As described in section 2, when the filter plate moves downward, water can flow into the guide shroud at its lower center. The positioning shaft inside the guide shroud can rotate relative to the positioning bearing through the rotation of the guide blades. The guide blades can improve the effect of water flow into the guide shroud according to the water flow situation. During filter pressing, in order to avoid sediment and suspended matter accumulating at the filter holes and causing blockage, water flows in through the guide shroud. The water flow is sprayed out in all directions through the guide nozzles, which can disperse and wash away the accumulated matter at the filter holes, ensuring stable water flow.

[0017] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the embodiment; Figure 2 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment; Figure 3 This is a schematic diagram of the internal structure of an embodiment; Figure 4 This is an enlarged schematic diagram of point A in the embodiment; Figure 5 This is a bottom view of the filter plate in an embodiment. Figure 6 This is an enlarged schematic diagram of point B in the embodiment; Figure 7 This is a front view of the stirring blade in an embodiment; Figure 8 This is a schematic diagram showing the location of the stirring motor in this embodiment; Figure 9 This is a schematic diagram of the internal structure of the connecting pipe in this embodiment.

[0019] The following are the markings in the attached diagram: 1. Support mechanism; 2. Wastewater treatment mechanism; 3. Pumping mechanism; 4. Screw drive mechanism; 10. Base; 11. Column; 12. Crossbar; 13. Support plate; 20. Treatment tank; 21. Feeding interface; 22. First valve; 23. Water inlet interface; 24. Second valve; 25. Waste discharge interface; 26. Third valve; 201. End cap; 202. Rod sleeve; 203. Connecting rod; 204. Filter plate; 205. Filter hole; 206. Pipe sleeve; 207. Telescopic pipe; 208. Transition pipe; 2001. Flow guide shroud; 2002. Positioning bearing; 2003. Positioning shaft; 2004. Flow guide vane. 2005, guide nozzle; 20001, sealed bearing; 20002, stirring shaft; 20003, stirring blade; 20004, stirring motor; 30, water pump; 31, drain pipe; 32, connecting pipe; 321, inner cylinder; 322, limit block; 323, external thread; 324, internal thread; 325, knob; 3210, support bearing; 3211, filter screen; 3212, scraper; 3213, slat; 3214, support shaft; 3215, vortex blade; 40, side frame; 41, drive motor; 42, lead screw; 43, threaded sleeve; 44, side platform; 45, rotating seat; 46, round hole. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method: Example

[0021] like Figures 1 to 9 As shown, a pretreatment device for use in electroplating wastewater treatment equipment is disclosed, including a support mechanism 1. A wastewater treatment mechanism 2, a pumping mechanism 3 and a screw drive mechanism 4 are respectively arranged on the support mechanism 1. The pumping mechanism 3 and the screw drive mechanism 4 are respectively arranged on both sides of the wastewater treatment mechanism 2. The support mechanism 1 includes a base 10, and two columns 11 are provided on one side of the base 10. The lower end of the column 11 is fixed to the surface of the base 10 by screws. The two columns 11 are arranged in parallel to each other. Several crossbars 12 are arranged between the two columns 11. The two ends of the crossbars 12 are welded and fixed to the surface of the corresponding column 11. The several crossbars 12 are arranged vertically and equidistantly. A support plate 13 is fixed to the upper end of the two columns 11. The support plate 13 can be used for the placement or erection of the structure. The wastewater treatment unit 2 includes a treatment tank 20. The lower end of the treatment tank 20 is provided with support legs. There are at least two support legs, and they are relatively wide, which can be used for stable support of the treatment tank 20. The upper end of the support legs is fixed to the treatment tank 20 by welding, and the lower end of the support legs is fixed to the surface of the base 10 by screws. The treatment tank 20 has a conical cylindrical structure, which facilitates the accumulation of materials during waste discharge. A feeding port 21 is provided through the upper end of one side of the treatment tank 20. The feeding port 21 is fixed to the treatment tank 20 by welding. A first valve 22 is provided on the surface of the feeding port 21, and the valve core of the first valve 22 is embedded inside the feeding port 21. The feeding port 21 can be used to add solutions for treating heavy metals or neutralizing acidity and alkalinity during wastewater treatment. A water inlet port 23 is provided through the upper end of the front side of the treatment tank 20. The water inlet port 23 is fixed to the treatment tank 20 by welding. A second valve 23 is provided on the surface of the water inlet port 23. Valve 24, the valve core of the second valve 24 is embedded inside the water inlet 23. The water inlet 23 can be used to transport normal electroplating wastewater into the treatment tank 20. The lower end of the treatment tank 20 is provided with a waste discharge port 25. The connection between the waste discharge port 25 and the treatment tank 20 is fixed by welding. The surface of the treatment tank 20 is provided with a third valve 26. The valve core of the third valve 26 is embedded inside the waste discharge port 25. After the waste discharge port 25 has completed the pretreatment inside the entire treatment tank 20, it can discharge the waste material that has settled at the bottom. The upper end of the treatment tank 20 is covered with an end cap 201. The lower edge of the end cap 201 is fixedly assembled to the port of the treatment tank 20 by screws. A rod sleeve 202 is provided through one side of the end cap 201. The connection between the rod sleeve 202 and the end cap 201 is fixed by welding. A connecting rod 203 is provided through the inside of the rod sleeve 202. A filter plate 204 is provided at the lower end of the connecting rod 203. The surface of the filter plate 204 is welded to the lower end of the connecting rod 203. The surface of the filter plate 204 is opened. There are several filter holes 205 penetrating its interior. During treatment, the filter plate 204 will rise to its highest point to avoid contact with wastewater that has not yet settled completely during the treatment process, and to prevent excessive waste from being placed on the top of the filter plate 204. After the wastewater treatment is completed and it has been left to stand for a period of time, the filter plate 204 can be moved downwards so that it can pass through the filter holes 205 to filter the suspended solids and sediments in the wastewater, ensuring that when the water is pumped to the next stage of transfer, the waste can be filtered by the filter plate 204 and placed below. A sleeve 206 is provided through the center of the end cap 201. The connection between the sleeve 206 and the end cap 201 is fixed by welding. A telescopic tube 207 is provided through the inside of the sleeve 206. The lower end of the telescopic tube 207 is fixedly assembled to the upper surface of the filter plate 204 through a bracket. The telescopic tube 207 can move up and down inside the sleeve 206 and move together with the connecting rod 203 inside the rod sleeve 202, so that the filter plate 204 can move up and down. When pumping water, the telescopic tube 207 can move with the filter plate 204 and stay above the filter plate 204 to continuously pump water and ensure the stability of the pumping process. A transition tube 208 is slidably sleeved on the surface of the telescopic tube 207. A flow guide hood 2001 is provided at the lower end of the filter plate 204. The flow guide hood 2001 is located at the center of the filter plate 204 and the two are fixedly assembled by screws. The flow guide hood 2001 is a circular hollow structure, which allows water to flow into the flow guide hood 2001 when the filter plate 204 moves downward. A positioning bearing 2002 is provided at the center of the interior of the flow guide hood 2001. One end of the positioning bearing 2002 is fixed to the flow guide hood 2001 by welding. A positioning shaft 2003 is provided through the interior of the positioning bearing 2002. The upper end of the positioning shaft 2003 is interference-fitted with the inner ring wall of the positioning bearing 2002. Several flow guide vanes 2004 are provided on the surface of the positioning shaft 2003. One end of the flow guide vanes 2004 is fixed to the surface of the positioning shaft 2003. The filter plate 2004 can rotate synchronously after the water flow enters the guide shroud 2001, which can improve the water flow rate when entering the guide shroud 2001. Several guide nozzles 2005 are distributed on the outer ring wall of the guide shroud 2001. The guide nozzles 2005 and the guide shroud 2001 are interconnected and fixed by welding. After the water flow enters the guide shroud 2001, it is sprayed out through the guide nozzles 2005 and dispersed to the surrounding area. During the downward movement of the filter plate 204 and the synchronous filtration of the filter holes 205, the lower opening of the filter holes 205 is prevented from being blocked by the accumulation of sediment or suspended matter. The spraying effect of the guide nozzles 2005 can blow away the suspended matter or sediment accumulated at the filter holes 205, ensuring the water flow effect of the filter holes 205. Sealed bearings 20001 are installed through both sides of the bottom of the treatment tank 20. The connection between the sealed bearings 20001 and the treatment tank 20 is fixed by welding. The same stirring shaft 20002 is installed through the inside of both sealed bearings 20001. The stirring shaft 20002 and the inner ring wall of the sealed bearings 20001 are interference-fitted. Several stirring blades 20003 are fixedly installed on the surface of the stirring shaft 20002. When the stirring blades 20003 rotate, they can mix the wastewater and the treatment liquid from the bottom, improving the mixing effect. A stirring motor 20004 is installed outside the treatment tank 20. The stirring motor 20004 has a stirring shaft for driving inside. The end of the stirring shaft is fixed to the stirring shaft 20002 by a coupling.

[0022] The pumping mechanism 3 includes a water pump 30. The water pump 30 is installed above the support plate 13. The lower end of the water pump 30 is fixedly connected to the support plate 13 via a bracket. The outlet of the water pump 30 is fixedly connected to a drain pipe 31. The drain pipe 31 is bent at two 90-degree angles, so that the other end of the drain pipe 31 opens vertically downwards. The inlet of the water pump 30 is provided with a connecting pipe 32. The connecting pipe 32 is bent at 90 degrees. One end of the connecting pipe 32 is fixed to the inlet of the water pump 30 via a flange. The lower end of the connecting pipe 32 is fixedly connected to the transition pipe 208 via a flange. Through the pumping effect of the water pump 30, after the wastewater treatment tank 20 is completed, the wastewater is pumped out from the treatment tank 20 and transported to the next stage. The connecting tube 32 has an inner tube 321 inside. The outer ring wall of the inner tube 321 is slidably sleeved with the inner wall of the connecting tube 32. The inner wall of the connecting tube 32 is also fixed with a limit block 322. There are two limit blocks 322, and the limit blocks 322 are symmetrically distributed along the inside of the connecting tube 32. One side of the limit block 322 is tightly attached to the end face of the connecting tube 32. The limit block 322 is fixed to the inside of the inner tube 321 by screws. The limit block 322 can limit the depth of the inner tube 321. The inner tube 321 is located near the lower end port of the connecting tube 32. The outer ring wall of the inner cylinder 321 is provided with an external thread 323, and the inner ring wall of the connecting tube 32 is provided with an internal thread 324. The internal thread 324 and the external thread 323 are threaded together. Through the threaded connection, the inner cylinder 321 and the connecting tube 32 can be quickly assembled and disassembled. A knob 325 is provided on the inner wall surface of the inner cylinder 321 near the port of the connecting tube 32. There are at least two knobs 325, which are symmetrically distributed on the inner wall of the inner cylinder 321. One end of the knob 325 is fixedly connected to the inner wall of the inner cylinder 321 by a screw. A support bearing 3210 is located at the center of the inner cylinder 321. A filter screen 3211 is fixedly sleeved on the surface of the support bearing 3210. The outer edge of the filter screen 3211 is welded and fixed to the inner wall of the inner cylinder 321. A support shaft 3214 is installed through the support bearing 3210. Several vortex blades 3215 are installed at the upper end of the support shaft 3214. The vortex blades 3215 can be driven to rotate as water flows from bottom to top, generating an upward auxiliary conveying effect and improving the flow efficiency of the water. A slat 3213 is fixed to the lower end of the support rod 3214, and a scraper 3212 is fixed to the upper end of the slat 3213. The upper end of the scraper 3212 is closely attached to the lower end face of the filter screen 3211. When the water is conveyed from bottom to top, some impurities will overflow from the filter holes 205. When water is sent to the next stage, it will be further filtered through the filter screen 3211. In order to prevent impurities from adhering to the filter screen 3211 when the water is flowing, the scraper 3212 can continuously scrape to keep the impurities from accumulating on the filter screen 3211. After the water is pumped out, the impurities will slide back into the treatment tank 20 and wait for waste discharge. The lead screw drive mechanism 4 includes a side frame 40, which is a right-angle structure. A drive motor 41 is installed at the lower end of the side frame 40. The outer wall of the drive motor 41 is fixedly mounted to the surface of the side frame 40 via a bracket. A drive shaft for driving is installed inside the drive motor 41. A lead screw 42 is fixed to the end of the drive shaft via a coupling. A threaded sleeve 43 is threadedly connected to the surface of the lead screw 42. The outer wall of the threaded sleeve 43 is fixedly connected to the connecting rod 203 via a bracket. A side platform 44 is fixed to the inward side of the side frame 40. A rotating seat 45 is fixed to the upper end of the side platform 44. The lower end of the lead screw 42 is connected to the rotating seat 45. The drive motor 41 is connected to a forward and reverse switch via wires. The forward and reverse rotation switch is model HY2-8. The forward and reverse rotation of the drive motor 41 causes the lead screw 42 to move in tandem, which in turn enables the threaded sleeve 43 to move in tandem. The connecting rod 203 serves as a limiting structure and slides through the sleeve 202, allowing the connecting rod 203 to move vertically downwards stably. This allows the filter plate 204 to slide up and down within the treatment tank 20, achieving stable pressure filtration during wastewater pumping. A circular hole 46 is provided in the middle of the side frame 40, which corresponds to the position of the feeding interface 21.

[0023] In practice When wastewater treatment is required, the forward rotation switch of the drive motor 41 is first activated, causing the drive motor 41 to drive the lead screw 42 to rotate in the forward direction via the drive shaft. This causes the threaded sleeve 43 to move, and the connecting rod 203 connected to the threaded sleeve 43 slides within the rod sleeve 202, achieving overall limiting. This allows the connecting rod 203 to move the filter plate 204 upward to a position higher than the mixing liquid level, thus affecting the mixing of wastewater and reagents. Then, the wastewater is sent into the treatment tank 20 through the water inlet 23, and reagents can be delivered to the treatment tank 20 through the feeding interface 21 for treating heavy metals and balancing pH. After the reagent is fed into the treatment tank 20, in order to improve the mixing effect of the reagent and the wastewater, the power supply of the stirring motor 20004 is turned on. The stirring shaft of the stirring motor 20004 drives the stirring shaft 20002 to rotate, which in turn drives the stirring blades 20003 to rotate. Thus, the reagent and the wastewater can be effectively mixed. After mixing, the sediment and the treated wastewater are allowed to separate into layers by letting it stand. When the treated and fully stratified wastewater needs to be transported to the next stage, the power supply to the drive motor 41 is reversed, causing the lead screw 42 to reverse. Through the movement of the threaded sleeve 43, the connecting rod 203 can move downward within the sleeve 202, carrying the filter plate 204 and the filter holes 205 to filter the wastewater. At this time, the telescopic pipe 207 used for pumping water extends and retracts within the transition pipe 208, and moves along with the sleeve 206, moving downward together with the filter plate 204, ensuring that the telescopic pipe 207 and the filter plate 204 move downward together. 04 is designed with spacing so that after the sediment and suspended solids are filtered out by the filter holes 205, the wastewater can be drawn in through the telescopic pipe 207. When the water pump 30 is started, the wastewater can enter the transition pipe 208 through the telescopic pipe 207. The transition pipe 208 is connected to the connecting pipe 32, which can be vertically fixed and can move stably with the telescopic pipe 207. The wastewater enters the connecting pipe 32 through the transition pipe 208 and is finally discharged through the drain pipe 31 at the outlet of the water pump 30. During the pressure filtration of the filter plate 204 and the water pump 30, after the water flow merges into the guide hood 2001, it is sprayed out through the guide nozzle 2005 and dispersed to the surroundings. During the downward movement of the filter plate 204 and the synchronous filtration of the filter holes 205, the lower opening of the filter holes 205 is prevented from being blocked by the accumulation of sediment or suspended matter. The spraying effect of the guide nozzle 2005 can disperse the suspended matter or sediment accumulated at the filter hole 205, ensuring the water flow effect of the filter hole 205. When the water flow is transported from bottom to top, some impurities will overflow from the filter holes 205. When the water is sent to the next stage, it will be further filtered through the filter screen 3211. In order to prevent impurities from adhering to the filter screen 3211 during the water flow, the scraper 3212 can continuously scrape to keep the impurities from accumulating on the filter screen 3211. After the water is pumped out, the impurities will slide back into the treatment tank 20 to wait for waste discharge.

[0024] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or its practicality.

Claims

1. A pretreatment device used in electroplating wastewater treatment equipment, characterized in that: The system includes a support mechanism, on which a wastewater treatment mechanism, a pumping mechanism, and a screw drive mechanism are respectively installed; The pumping mechanism and the screw drive mechanism are respectively located on both sides of the wastewater treatment mechanism.

2. The pretreatment device for use in electroplating wastewater treatment equipment according to claim 1, characterized in that: The support mechanism includes a base, and a column is provided on one side of the base; Several horizontal bars are set between the two columns, and the horizontal bars are distributed vertically at equal intervals. The upper ends of the two columns are fixed with support plates.

3. The pretreatment device for use in electroplating wastewater treatment equipment according to claim 2, characterized in that: The wastewater treatment mechanism includes a treatment tank, and the lower end of the treatment tank is provided with support legs; A feeding port is provided through the upper end of one side of the treatment tank, and a first valve is provided on the surface of the feeding port. A water inlet is provided through the upper end of the front side of the treatment tank, and a second valve is provided on the surface of the water inlet. A waste discharge port is provided through the lower end of the treatment tank, and a third valve is provided on the surface of the treatment tank.

4. The pretreatment device for use in electroplating wastewater treatment equipment according to claim 3, characterized in that: The upper end of the processing tank is covered with an end cap, and a rod sleeve is provided through one side of the end cap. A connecting rod is provided through the inside of the rod sleeve, and a filter plate is provided at the lower end of the connecting rod. Several filter holes are opened on the surface of the filter plate. A sleeve is installed through the center of the end cap, and a telescopic tube is installed through the inside of the sleeve. A transition tube is slidably fitted onto the surface of the telescopic tube.

5. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 4, characterized in that: The lower end of the filter plate is provided with a flow guide shroud, which is a circular hollow structure. A positioning bearing is provided at the center of the flow guide shroud, and a positioning shaft is provided through the interior of the positioning bearing. The upper end of the positioning shaft is interference-fitted with the inner ring wall of the positioning bearing, and several flow guide blades are provided on the surface of the positioning shaft. The outer ring wall of the flow guide has several flow guide nozzles, which are interconnected with the flow guide.

6. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 5, characterized in that: Both sides of the bottom of the processing tank are provided with sealed bearings, and the same stirring shaft is provided inside the two sealed bearings. The stirring shaft and the inner ring wall of the sealed bearing are interference fit with each other, and several stirring blades are fixedly provided on the surface of the stirring shaft. The processing tank is equipped with an external stirring motor, and the stirring motor has an internal stirring shaft for driving. The end of the stirring shaft and the stirring rod are fixed to each other by a coupling.

7. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 6, characterized in that: The pumping mechanism includes a water pump, which is installed above the support plate. The outlet of the water pump is fixedly connected to a drain pipe, and the inlet of the water pump is connected to a connecting pipe.

8. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 7, characterized in that: The connecting tube has an internal inner cylinder, and a limit block is fixed on the inner wall of the connecting tube. One side of the limit block is tightly attached to the end face of the connecting tube, and the internal cylinder is located near the lower end port of the connecting tube. The outer ring wall of the inner cylinder is provided with external threads, and the inner ring wall of the connecting pipe is provided with internal threads. The internal threads and external threads are threadedly connected to each other. A knob is provided on the inner wall of the inner tube near the port of the connecting pipe. There are at least two knobs, which are symmetrically distributed on the inner wall of the inner tube. One end of the knob is fixedly connected to the inner wall of the inner tube by a screw.

9. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 8, characterized in that: A support bearing is provided at the center of the inner cylinder. A filter screen is fixedly sleeved on the surface of the support bearing. A support shaft is provided through the inside of the support bearing. Several vortex blades are provided at the upper end of the support shaft. A slat is fixed to the lower end of the support shaft, and a scraper is fixed to the upper end of the slat. The upper end of the scraper is in close contact with the lower end of the filter screen.

10. A pretreatment device for use in electroplating wastewater treatment equipment according to claim 9, characterized in that: The lead screw drive mechanism includes a side frame, a drive motor is provided at the lower end of the side frame, a drive shaft for driving is provided inside the drive motor, and a lead screw is fixed to the end of the drive shaft through a coupling. A threaded sleeve is threadedly connected to the surface of the lead screw. A side platform is fixed to the inward side of the side frame, and a rotating seat is fixed to the upper end of the side platform. The lower end of the lead screw is rotated with the rotating seat. A circular hole is provided in the middle of the side frame, and the hole corresponds to the position of the feeding interface.

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