Wastewater recovery device for pickling tank

Abstract

The present invention provides a wastewater recovery device for a pickling tank, the wastewater recovery device comprising a pretreatment mechanism and a recovery tank, the pretreatment mechanism and the recovery tank being connected via a pipeline, the pretreatment mechanism comprising a pretreatment cylinder, a filter screen, a water flow distribution component and a drive component, the present invention relates to the technical field of pickling wastewater treatment, the present invention enables wastewater to be more evenly distributed when entering the filter screen of the pretreatment cylinder through the design of three flat plate distributors (a first flat plate distributor, a second flat plate distributor and a third flat plate distributor) in the water flow distribution component, thereby improving the filtering efficiency of the filter screen, reducing the problems of local over-filtration and under-utilization, and at the same time, due to the design of the water flow distribution component, the filter screen can be evenly filtered, avoiding excessive local wear, thereby extending the service life of the filtering equipment, reducing the deposition of impurities on the filter screen, and reducing the risk of filter screen clogging.

Description

Technical Field

[0001] The invention relates to the technical field of pickling wastewater treatment, in particular to a wastewater recovery device for a pickling tank. Background Art

[0002] The pickling tank wastewater recovery equipment is a system for effectively treating wastewater generated in the pickling process. The system integrates wastewater collection, pretreatment, chemical treatment, physical treatment and recycling, aiming to achieve wastewater purification and resource utilization. In the existing pickling tank wastewater recovery equipment, the pretreatment unit plays a vital role. Its function is to intercept impurities in the wastewater through the built-in filtering equipment to ensure the normal operation and efficiency of the subsequent treatment unit.

[0003] However, in actual application, our technicians found that there were certain problems with the current pretreatment unit. Since the position of the water inlet pipeline was fixed, the filtration equipment could not evenly utilize its filtration area when filtering wastewater, causing some areas of the filtration equipment to be overused while other areas were not fully utilized. This uneven filtration not only reduced the overall efficiency of the filtration equipment, but also greatly shortened the service life of the equipment, because the overused parts would wear out faster, while the underused parts would cause a waste of resources. This situation forced the staff to replace and maintain the filtration equipment more frequently, which not only increased operating costs, but also affected the stability and continuity of the wastewater treatment system. Summary of the invention

[0004] The object of the present invention is to provide a wastewater recovery device for a pickling tank, aiming to solve the problem that the position of the water inlet pipeline of the current pretreatment unit is fixed, which results in the filtering equipment not being able to uniformly utilize its filtering area when filtering wastewater, causing some areas of the filtering equipment to be overused while other areas are not fully utilized.

[0005] The present invention provides a wastewater recovery device for a pickling tank, the wastewater recovery device comprises a pretreatment mechanism and a recovery tank, the pretreatment mechanism and the recovery tank are connected by a pipeline, the pretreatment mechanism comprises a pretreatment cylinder, a filter screen, a water flow distribution component and a drive component, the filter screen is fixedly arranged on the inner wall of the pretreatment cylinder, the water flow distribution component is fixedly arranged on the inner wall of the pretreatment cylinder, and the water flow distribution component is fixedly connected to the water inlet pipeline of the pretreatment cylinder, the water flow distribution component is located above the filter screen, the water flow distribution component is used to guide the wastewater to be evenly dispersed to the filter screen, and the drive component is fixedly arranged The water flow distribution component is placed on the pretreatment cylinder, and the driving component is connected to the water flow distribution component; the water flow distribution component includes a support cylinder, a first flat plate distributor, a second flat plate distributor and a third flat plate distributor, the support cylinder is fixedly arranged on the inner wall of the pretreatment cylinder, the top of the support cylinder is a closed structure, and the bottom of the support cylinder is an open structure, the opening area of ​​the bottom of the support cylinder is the same as the area of ​​the filter screen, the first flat plate distributor is fixedly arranged on the inner wall of the support cylinder, and the first flat plate distributor is a circular structure, a circular protrusion is arranged in the middle of the first flat plate distributor, and the first flat plate distributor is a circular structure. The convex part of the distributor is higher than the surface of the first flat plate distributor, and the outer edge of the convex part is connected to the edge of the first flat plate distributor in an arc-shaped transition. The first flat plate distributor is provided with a plurality of water holes. The second flat plate distributor is fixedly arranged on the inner wall of the supporting cylinder, and the second flat plate distributor is a circular structure. The second flat plate distributor is provided with water holes. The second flat plate distributor is located below the first flat plate distributor. An arc-shaped slide is provided on the inner wall of the supporting cylinder. The third flat plate distributor is a circular structure, and the third flat plate distributor is slidably connected to the arc-shaped slide on the inner wall of the supporting cylinder. The third flat plate distributor The distributor is provided with a plurality of water holes, and the driving assembly is fixedly connected to the third flat plate distributor; the driving assembly comprises a rotating shaft, a motor, a first gear and a second gear, the rotating shaft is rotatably connected to the bottom of the pretreatment cylinder and the center of the filter screen through a sealed bearing, the top of the rotating shaft is fixedly connected to the bottom of the third flat plate distributor, the motor is fixedly arranged at the outer bottom of the pretreatment cylinder, the first gear is arranged at the driving end of the motor, the second gear is fixedly arranged on the outer wall of the rotating shaft, and the first gear is meshed with the second gear, and a cleaning assembly for cleaning the filter screen is also arranged on the rotating shaft;The cleaning assembly includes a dust suction pipe, a dust suction head, a dust removal box, a dust removal fan and a filter plate. The interior of the rotating shaft is provided with a dust suction inner cavity. One end of the dust suction pipe is fixedly connected to the rotating shaft, and the interior of the dust suction pipe is communicated with the dust suction inner cavity of the rotating shaft. The dust suction head is fixedly connected to the other end of the dust suction pipe, and the dust suction head is communicated with the interior of the dust suction pipe. The dust removal box is located below the pretreatment cylinder. The dust suction pipe is rotatably connected to the top of the dust removal box through a sealed bearing, and the dust suction pipe extends into the dust removal box. A sealed box door is movably connected to the front side of the dust removal box. The dust removal fan is fixedly arranged at the bottom of the dust removal box, and the air intake of the dust removal fan corresponds to the bottom end of the dust suction pipe. An exhaust hole is provided at the rear side of the dust removal box. The filter plate is fixedly arranged on the inner wall of the dust removal box, and the filter plate is located between the bottom end of the dust suction pipe and the dust removal fan. ;

[0006] Preferably, the water holes on the second flat plate distributor are arranged in a plum blossom shape, and the multiple water holes on the third flat plate distributor are evenly distributed and arranged, and the multiple water holes cover the surface of the filter screen.

[0007] Preferably, the water holes on the first flat plate distributor, the second flat plate distributor and the third flat plate distributor are staggered.

[0008] Preferably, the diameter of the water holes on the first flat plate distributor is 6 mm, the diameter of the water holes on the second flat plate distributor is 5 mm, and the diameter of the water holes on the third flat plate distributor is 4 mm.

[0009] Preferably, a cleaning brush is fixedly provided on the outer front side of the vacuum cleaner head, and the cleaning brush has the same length as the vacuum cleaner head.

[0010] Preferably, a valve is provided on the dust suction pipe.

[0011] Preferably, the wastewater recovery device also includes a pickling tank, a pH adjustment tank and a sedimentation treatment tank, the pickling tank is connected to the pretreatment mechanism through a pipeline, the pretreatment mechanism is connected to the pH adjustment tank through a pipeline, the pH adjustment tank is connected to the sedimentation treatment tank through a pipeline, and the sedimentation treatment tank is connected to the recovery tank through a pipeline.

[0012] The present invention provides a wastewater recovery device for a pickling tank through improvements. Compared with the prior art, the present invention has the following improvements and advantages: the present invention uses the design of three flat plate distributors (a first flat plate distributor, a second flat plate distributor and a third flat plate distributor) in the water flow distribution component to enable the wastewater to be more evenly distributed when entering the filter screen of the pretreatment cylinder, thereby improving the filtration efficiency of the filter screen and reducing the problems of local over-filtration and under-utilization. At the same time, due to the design of the water flow distribution component, the filter screen can be evenly filtered to avoid excessive local wear, thereby extending the service life of the filtering equipment, reducing the deposition of impurities on the filter screen, reducing the risk of filter screen blockage, and reducing the frequency of replacement and maintenance. In the treatment of wastewater from the pickling tank, these improvements not only improve the treatment efficiency, but also reduce the operating cost, ensuring the stability and reliability of the wastewater treatment process. Further, the present invention can drive the third flat plate distributor to rotate through the driving component arranged on the third flat plate distributor. During the rotation process, the water holes on the third flat plate distributor can cause the water flow to produce a divergent effect when passing through. This divergent effect breaks the fixed flow pattern that may be formed on the surface of the filter, thereby making the distribution of water on the filter more even, further improving the utilization rate of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of a wastewater recovery device of a pickling tank of the present invention;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of a pretreatment mechanism of a wastewater recovery device of a pickling tank of the present invention;

[0016] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of a pretreatment structure of a wastewater recovery device of a pickling tank of the present invention;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of a supporting cylinder and a rotating shaft of a pretreatment structure of a wastewater recovery device of a pickling tank of the present invention;

[0018] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of a supporting cylinder of a wastewater recovery device pretreatment structure of a pickling tank of the present invention;

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the first flat plate distributor of the pretreatment structure of the wastewater recovery device of the pickling tank of the present invention;

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the second flat plate distributor of the pretreatment structure of the wastewater recovery device of the pickling tank of the present invention;

[0021] Figure 8 It is a schematic diagram of the three-dimensional structure of the third flat plate distributor of the pretreatment structure of the wastewater recovery device of the pickling tank of the present invention;

[0022] Fig. 9 for Figure 3 A schematic diagram of the enlarged structure of the middle A position;

[0023] Fig.10 It is a three-dimensional cross-sectional structural schematic diagram of a dust removal box of a wastewater recovery device pretreatment structure of a pickling tank of the present invention;

[0024] Fig.11 It is a three-dimensional structural schematic diagram of a rotating shaft, a dust suction pipe, a dust suction head and a valve of a wastewater recovery device pretreatment structure of a pickling tank of the present invention;

[0025] Fig.12 It is a schematic diagram of the main cross-sectional structure of a rotating shaft, a dust suction pipe, a dust suction head and a valve of a pretreatment structure of a wastewater recovery device of a pickling tank of the present invention.

[0026] Description of reference numerals:

[0027] 1. Pickling tank; 2. Pretreatment mechanism; 3. pH adjustment tank; 4. Sedimentation treatment tank; 5. Recovery tank; 21. Pretreatment cylinder; 22. Filter; 23. Water flow distribution assembly; 2301. Support cylinder; 2302. First flat plate distributor; 2303. Second flat plate distributor; 2304. Third flat plate distributor; 24. Drive assembly; 2401. Rotating shaft; 2402. Motor; 2403. First gear; 2404. Second gear; 25. Cleaning assembly; 2501. Dust suction pipe; 2502. Dust suction head; 2503. Dust removal box; 2504. Dust removal fan; 2505. Filter plate; 2506. Cleaning brush; 2507. Valve. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figure 1-12The present invention provides a technical solution: a wastewater recovery device for a pickling tank, the wastewater recovery device includes a pretreatment mechanism 2 and a recovery tank 5, the pretreatment mechanism 2 and the recovery tank 5 are connected by a pipeline, the pretreatment mechanism 2 includes a pretreatment cylinder 21, a filter 22, a water flow distribution component 23 and a drive component 24, the filter 22 is fixedly arranged on the inner wall of the pretreatment cylinder 21, the water flow distribution component 23 is fixedly arranged on the inner wall of the pretreatment cylinder 21, and the water flow distribution component 23 is fixedly connected to the water inlet pipeline of the pretreatment cylinder 21, the water flow distribution component 23 is located above the filter 22, the water flow distribution component 23 is used to guide the wastewater to be evenly dispersed to the filter 22, so that it finally enters the filter 22 evenly, and the drive component 24 is fixedly arranged It is placed on the pretreatment cylinder 21, and the driving assembly 24 is connected to the water flow distribution assembly 23; the water flow distribution assembly 23 includes a support cylinder 2301, a first flat plate distributor 2302, a second flat plate distributor 2303 and a third flat plate distributor 2304, the support cylinder 2301 is fixedly arranged on the inner wall of the pretreatment cylinder 21, the top of the support cylinder 2301 is a closed structure, and the bottom of the support cylinder 2301 is an open structure, the support cylinder 2301 is fixedly arranged on the inner wall of the pretreatment cylinder 21, forming a closed top and open bottom structure, the opening area at the bottom of the support cylinder 2301 is the same as the area of ​​the filter screen 22, ensuring that the wastewater can flow into the filter screen 22 for pretreatment; the first flat plate distributor 2302 is fixedly arranged on the inner wall of the support cylinder 2301, and the first flat plate distributor 2302 is a circular structure, and a circular protrusion is arranged in the middle part of the first flat plate distributor 2302, and the protrusion of the first flat plate distributor 2302 is higher than the surface of the first flat plate distributor 2302, and the outer edge of the protrusion is connected with the edge of the first flat plate distributor 2302 in an arc-shaped transition, and the first flat plate distributor 2302 is provided with a plurality of water holes, and the protrusion is located directly below the pretreatment cylinder 21, forcing the water flow to bypass the protrusion when passing through the first flat plate distributor 2302, effectively avoiding the water flow directly flowing into the nearby water holes, so that the water flow can be distributed to a wider area outside the first flat plate distributor 2302, thereby achieving more uniform water Flow distribution reduces the local impact of water flow on the water holes, reduces water flow resistance, improves hydraulic efficiency, and reduces the problem of insufficient subsequent filtration caused by uneven water flow distribution. The second flat plate distributor 2303 is fixedly arranged on the inner wall of the support cylinder 2301, and the second flat plate distributor 2303 is a circular structure. The second flat plate distributor 2303 is provided with water holes. The second flat plate distributor 2303 is located below the first flat plate distributor 2302. The water holes on the second flat plate distributor 2303 are used for more refined distribution on the basis of the water flow that has been initially evenly distributed by the first flat plate distributor 2302. An arc slide is provided on the inner wall of the support cylinder 2301. The third flat plate distributor 2304 is a circular structure.The third flat plate distributor 2304 is slidably connected to the arc-shaped slide on the inner wall of the support cylinder 2301. The area of ​​the third flat plate distributor 2304 is larger than that of the first flat plate distributor 2302 and the second flat plate distributor 2303. The third flat plate distributor 2304 is provided with a plurality of water holes. The water holes on the third flat plate distributor 2304 are used to distribute the water to the greatest extent on the basis of the water flow that has been initially evenly distributed by the second flat plate distributor 2303. The driving component 24 is fixedly connected to the third flat plate distributor 2304. The driving component 24 is used to drive the third flat plate distributor 2304 to rotate, thereby diverging the water flow and making the wastewater more evenly distributed on the filter net. The first flat plate distributor 2302 with a special shape allows the water flow to bypass the protrusion when passing through the first flat plate distributor 2302, effectively preventing the water flow from directly flowing into the nearby water holes, so that the water flow can be distributed to a wider area outside the first flat plate distributor 2302. The water flow can be initially distributed when passing through the first flat plate distributor 2302, reducing the possibility of the water flow directly impacting the filter screen 22 and reducing the pressure of the filter screen 22. The water flow continues to flow to the second flat plate distributor 2303 under the action of gravity. When the water flow passes through the second flat plate distributor 2303, It is redistributed again, further improving the uniformity of the water flow. When it reaches the third flat plate distributor 2304, the water flow is evenly distributed again on the basis of passing through the first flat plate distributor 2302 and the second flat plate distributor 2303. Compared with the traditional distributor, the first flat plate distributor 2302, the second flat plate distributor 2303 and the third flat plate distributor 2304 work together to ensure that the water flow is more evenly distributed on the filter screen 22 through multi-stage distribution, while the traditional distributor can only provide one-stage distribution and cannot achieve the same uniform distribution effect. This not only improves the filtration efficiency, but also ensures that every part of the filter screen 22 can fully participate in the filtration process, thereby improving the overall water treatment quality, reducing the clogging of the filter screen 22, and extending the service life of the filter screen 22; the driving assembly 24 includes a rotating shaft 2401, a motor 2402, a first gear 2403 and a second gear 2404. The rotating shaft 2401 is rotatably connected to the bottom of the pretreatment cylinder 21 and the center of the filter screen 22 through sealed bearings, and the sealed bearing rotation connection ensures stability during rotation. The top of the rotating shaft 2401 is fixedly connected to the bottom of the third flat plate distributor 2304, the motor 2402 is fixedly arranged at the outer bottom of the pretreatment cylinder 21, the first gear 2403 is arranged at the driving end of the motor 2402, the second gear 2404 is fixedly arranged on the outer wall of the rotating shaft 2401, and the first gear 2403 is meshed with the second gear 2404, and the cleaning component 25 is connected to the bottom end of the rotating shaft 2401; the wastewater is evenly distributed through the water flow distribution component 23 and reaches the surface of the filter screen 22 for filtration. During the filtration process,The driving end of the motor 2402 will drive the first gear 2403 to rotate. At this time, the first gear 2403 will drive the second gear 2404 meshing therewith and the rotating shaft 2401 to rotate. Then the rotating shaft 2401 can synchronously drive the third flat plate distributor 2304 to rotate, thereby causing the water flow passing through the third flat plate distributor 2304 to diverge. During the rotation process, the water holes on the third flat plate distributor 2304 can cause the water flow to produce a divergent effect when passing through. This divergence effect can make the water flow more evenly distributed on the filter screen 22, thereby further improving the utilization rate of the filter screen 22; the cleaning component 25 includes a dust suction pipe 2501, a dust suction head 2502, a dust removal box 2503, a dust removal fan 2504 and a filter plate 2505, and a dust suction cavity is provided inside the rotating shaft 2401. One end of the dust suction pipe 2501 is fixedly connected to the rotating shaft 2401, and the interior of the dust suction pipe 2501 is connected to the dust suction cavity of the rotating shaft 2401. The dust suction head 2502 is fixedly connected to the other end of the dust suction pipe 2501, and the dust suction head 2502 is connected to the interior of the dust suction pipe 2501. The dust collection cavity of the rotating shaft 2401, the dust collection head 2502 and the dust collection head 2502 form a dust collection channel, and the dust collection box 2503 is located below the pretreatment cylinder 21. The dust collection pipe 2501 is rotatably connected to the top of the dust collection box 2503 through a sealed bearing, and the dust collection pipe 2501 extends into the dust collection box 2503. The sealed bearing connection method ensures that the rotating shaft 2401 can rotate normally, and realizes the sealed connection between the rotating shaft 2401 and the dust collection box 2503, thereby preventing impurities from leaking during the suction process. The front side of the dust collection box 2503 is movably connected with a sealed box door, and the setting of the sealed box door ensures The dust removal box 2503 is sealed, the dust removal fan 2504 is fixedly arranged at the bottom of the dust removal box 2503, and the air intake port of the dust removal fan 2504 corresponds to the bottom end of the dust suction pipe 2501, and an exhaust hole is opened on the rear side of the dust removal box 2503, and the exhaust hole corresponds to the exhaust port of the dust removal fan 2504, and the exhaust hole is used to discharge the excess gas released by the dust removal fan 2504 during dust collection, and the filter plate 2505 is fixedly arranged on the inner wall of the dust removal box 2503, and the filter plate 2505 is located between the bottom end of the dust suction pipe 2501 and the dust removal fan 2504, and the filter plate 2505 is used to intercept impurities adsorbed by the dust suction head 2502; when it is needed When the surface of the filter 22 is to be cleaned, the driving component 24 is started, and the driving component 24 activates the rotating shaft 2401. At the same time, the dust removal fan 2504 in the cleaning component 25 is also started. The moment the dust removal fan 2504 is turned on, a negative pressure environment is formed in the dust suction cavity of the rotating shaft 2401 and the dust suction pipe 2501. The negative pressure force sucks the impurities on the surface of the filter 22 from the dust suction head 2502. The impurities are evenly collected and transmitted through the dust suction pipe 2501 as the dust suction head 2502 is adsorbed. Since the interior of the dust suction pipe 2501 is connected with the dust suction cavity of the rotating shaft 2401, a dust suction channel is formed.The impurities are sucked into the dust removal box 2503 located below the pretreatment cylinder 21 along this channel. During this process, the continuous rotation of the rotating shaft 2401 ensures that the dust head 2502 can fully cover the surface of the filter screen 22 to achieve all-round cleaning. After entering the dust removal box 2503, the impurities first pass through the filter plate 2505 fixed to the inner wall. The filter plate 2505 is located between the bottom end of the dust suction pipe 2501 and the dust removal fan 2504. Its function is to effectively intercept larger impurities and prevent these impurities from entering the dust removal fan 2504, protecting the normal operation of the fan from damage. At the same time, the exhaust hole on the rear side of the dust removal box 2503 corresponds to the exhaust port of the dust removal fan 2504. The design of the exhaust hole allows the excess gas generated by the dust removal fan 2504 during the dust collection process to be discharged out of the box. This process maintains the negative pressure state inside the dust removal box 2503, ensuring that the cleaning component 25 can continue to perform cleaning work efficiently. During the entire adsorption process, the rotation of the rotating shaft 2401 of the driving component 24 and the internal dust collection cavity are performed synchronously. This design allows the dust collection tube 2501 and the dust collection head 2502 to follow the rotation of the rotating shaft 2401, thereby fully sucking the impurities adsorbed on the surface of the filter 22 into the filter plate 2505 of the dust removal box 2503. The working principle of the entire cleaning component 25 and the synergy of the driving component 24 not only realize the dynamic cleaning of the filter 22, but also ensure the continuous and stable operation of the wastewater treatment system, and improve the automation degree and operation efficiency of the system. Finally, since the cleaning component 25 directly uses the rotation of the rotating shaft 2401 as a power source to perform comprehensive adsorption and cleaning on the filter 22, there is no need to configure an additional power device, which not only reduces the energy consumption and complexity of the system, but also reduces the maintenance cost of the equipment.

[0032] Specifically, the water holes on the second flat plate distributor 2303 are arranged in a plum blossom shape, and the layout design of the plum blossom-shaped water holes enables the water flow to be more evenly dispersed when passing through the second flat plate distributor 2303. The characteristic of the plum blossom-shaped water holes is that the spacing between the holes is different in the vertical and horizontal directions, forming a staggered arrangement. First, the plum blossom-shaped water holes can effectively reduce the turbulence and eddy phenomenon of the water flow when passing through the flat plate, because the water flow will be divided into multiple small streams when passing through these holes, and each water flow can pass through the hole independently, reducing the interference between the water flows, thereby improving the uniformity of the distribution of the water flow; the multiple water holes on the third flat plate distributor 2304 are evenly distributed and arranged, and the multiple water holes cover the surface of the filter screen 22. The evenly distributed water holes ensure that the water flow can maintain uniformity to the maximum extent when passing through the third flat plate distributor 2304, so that each part of the filter screen 22 can be evenly contacted with the water flow, thereby improving the filtration efficiency and effect. The holes are spaced evenly apart, so that the water flow does not flow in some areas at high speed and in other areas at low speed. In addition, the plurality of water holes evenly cover the surface of the filter 22, and this covering method ensures that the entire working area of ​​the filter 22 can be fully utilized.

[0033] Specifically, the water holes on the first flat plate distributor 2302, the second flat plate distributor 2303 and the third flat plate distributor 2304 are staggered. The staggered setting means that the water holes on the three flat plate distributors do not correspond to each other in the vertical and horizontal directions, and the position of the water hole of each flat plate distributor is offset to a certain extent relative to the water hole of the previous flat plate distributor.

[0034] Specifically, the diameter of the water holes on the first flat plate distributor 2302 is 6 mm, the diameter of the water holes on the second flat plate distributor 2303 is 5 mm, and the diameter of the water holes on the third flat plate distributor 2304 is 4 mm. The maximum diameter of impurities in wastewater is usually between 1-2 mm, and the water holes of the first flat plate distributor 2302, the second flat plate distributor 2303, and the third flat plate distributor 2304 are all larger than 3 mm, avoiding the risk of the water holes being blocked by impurities in the wastewater.

[0035] Specifically, a cleaning brush 2506 is fixedly provided on the outer front side of the dust head 2502, and the cleaning brush 2506 has the same length as the dust head 2502. The cleaning brush 2506 has the same length as the dust head 2502. The same length as the dust head 2502 ensures that the cleaning brush 2506 can cover the same area as the dust head 2502 during the cleaning process. The cleaning brush 2506 is located on the outer front side of the dust head 2502, and its function is to pre-treat the surface of the filter 22 before the dust head 2502 absorbs impurities. Through synchronous rotation, the cleaning brush 2506 can effectively remove loose impurities and dirt on the filter 22, creating the best conditions for the adsorption work of the dust head 2502. The provision of the cleaning brush 2506 greatly improves the overall dust collection effect of the cleaning component 25, because it not only removes surface impurities, but also provides a cleaner adsorption surface for the dust head 2502, thereby reducing the resistance during the dust collection process and improving the dust collection efficiency.

[0036] Specifically, a valve 2507 is provided on the dust suction pipe 2501. The provision of the valve 2507 effectively prevents waste water from accumulating during filtration, thereby causing waste water to flow into the dust suction inner cavity, and prevents the dust removal fan 2504 from being damaged.

[0037] Specifically, the wastewater recovery device also includes a pickling tank 1, a pH adjustment tank 3 and a sedimentation treatment tank 4. The pickling tank 1 is connected to the pretreatment mechanism 2 through a pipeline, the pretreatment mechanism 2 is connected to the pH adjustment tank 3 through a pipeline, the pH adjustment tank 3 is connected to the sedimentation treatment tank 4 through a pipeline, and the sedimentation treatment tank 4 is connected to the recovery tank 5 through a pipeline. Wastewater first flows out of the pickling tank 1 and enters the pretreatment cylinder 21 of the pretreatment mechanism 2 through a pipeline. In the pretreatment cylinder 21, large particle impurities and suspended matter in the wastewater are filtered out by the filter 22 of the pretreatment cylinder 21 to prevent these substances from clogging or damaging the subsequent treatment units. The pretreated wastewater then flows into the pH adjustment tank 3 through a pipeline, where the pH value of the wastewater is adjusted to neutrality for the subsequent treatment process. The conditioned wastewater continues to flow through the pipeline into the sedimentation treatment tank 4, where the heavy metal ions and some organic matter in the wastewater form precipitates through chemical reactions. These precipitates accumulate at the bottom of the tank, while the clarified wastewater floats on the upper layer. The wastewater after the sedimentation treatment finally flows through the pipeline into the recovery tank 5, where the wastewater is further filtered and stabilized to meet the reuse standards.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wastewater recovery device for a pickling tank, characterized in that: The wastewater recovery device comprises a pretreatment mechanism (2) and a recovery tank (5), wherein the pretreatment mechanism (2) and the recovery tank (5) are connected via a pipeline, wherein the pretreatment mechanism (2) comprises a pretreatment cylinder (21), a filter screen (22), a water flow distribution component (23) and a drive component (24), wherein the filter screen (22) is fixedly arranged on the inner wall of the pretreatment cylinder (21), wherein the water flow distribution component (23) is fixedly arranged on the inner wall of the pretreatment cylinder (21), and wherein the water flow distribution component (23) is fixedly connected to the water inlet pipeline of the pretreatment cylinder (21), wherein the water flow distribution component (23) is located above the filter screen (22), and wherein the water flow distribution component (23) is located above the filter screen (22). The component (23) is used to guide the wastewater to be evenly dispersed to the filter screen (22); the driving component (24) is fixedly arranged on the pretreatment cylinder (21), and the driving component (24) is connected to the water flow distribution component (23); the water flow distribution component (23) comprises a support cylinder (2301), a first flat plate distributor (2302), a second flat plate distributor (2303) and a third flat plate distributor (2304); the support cylinder (2301) is fixedly arranged on the inner wall of the pretreatment cylinder (21); the top of the support cylinder (2301) is a closed structure, and the bottom of the support cylinder (2301) is an open structure; the support cylinder (23 01) has an opening area at the bottom that is the same as the area of ​​the filter screen (22), the first flat plate distributor (2302) is fixedly arranged on the inner wall of the support cylinder (2301), and the first flat plate distributor (2302) is a circular structure, a circular protrusion is arranged in the middle part of the first flat plate distributor (2302), the protrusion of the first flat plate distributor (2302) is higher than the surface of the first flat plate distributor (2302), and the outer edge of the protrusion is connected to the edge of the first flat plate distributor (2302) in an arc-shaped transition, the first flat plate distributor (2302) is provided with a plurality of water holes, and the second flat plate distributor (2303) is fixedly arranged on the support cylinder (2301). The inner wall of the support cylinder (2301), and the second flat plate distributor (2303) is a circular structure, the second flat plate distributor (2303) is provided with a water hole, the second flat plate distributor (2303) is located below the first flat plate distributor (2302), the inner wall of the support cylinder (2301) is provided with an arc slide, the third flat plate distributor (2304) is a circular structure, and the third flat plate distributor (2304) is slidably connected to the arc slide on the inner wall of the support cylinder (2301), the third flat plate distributor (2304) is provided with a plurality of water holes, and the driving assembly (24) is fixedly connected to the third flat plate distributor (2304);The driving assembly (24) comprises a rotating shaft (2401), a motor (2402), a first gear (2403) and a second gear (2404); the rotating shaft (2401) is rotatably connected to the bottom of the pretreatment cylinder (21) and the center of the filter screen (22) via sealed bearings, the top of the rotating shaft (2401) is fixedly connected to the bottom of the third flat plate distributor (2304); the motor (2402) is fixedly arranged at the outer bottom of the pretreatment cylinder (21); the first gear (2403) is arranged on the motor ( 2402), the second gear (2404) is fixedly arranged on the outer wall of the rotating shaft (2401), and the first gear (2403) is meshed with the second gear (2404). The rotating shaft (2401) is also provided with a cleaning component (25) for cleaning the filter screen (22); the cleaning component (25) includes a dust suction pipe (2501), a dust suction head (2502), a dust removal box (2503), a dust removal fan (2504) and a filter plate (2505). The interior of the rotating shaft (2401) is provided with a dust suction cavity. One end of the dust suction pipe (2501) is fixedly connected to the rotating shaft (2401), and the interior of the dust suction pipe (2501) is communicated with the dust suction inner cavity of the rotating shaft (2401); the dust suction head (2502) is fixedly connected to the other end of the dust suction pipe (2501), and the dust suction head (2502) is communicated with the interior of the dust suction pipe (2501); the dust removal box (2503) is located below the pretreatment cylinder (21); the dust suction pipe (2501) is rotatably connected to the top of the dust removal box (2503) via a sealed bearing, and the dust suction pipe (2501) is fixedly connected to the rotating shaft (2401); and the dust suction head (2502) is communicated with the interior of the dust suction pipe (2501). 1) extends into the dust removal box (2503), the front side of the dust removal box (2503) is movably connected with a sealed box door, the dust removal fan (2504) is fixedly arranged at the bottom of the dust removal box (2503), and the air inlet of the dust removal fan (2504) corresponds to the bottom end of the dust suction pipe (2501), the rear side of the dust removal box (2503) is provided with an exhaust hole, the filter plate (2505) is fixedly arranged on the inner wall of the dust removal box (2503), and the filter plate (2505) is located between the bottom end of the dust suction pipe (2501) and the dust removal fan (2504). ; 2. A wastewater recovery device for a pickling tank according to claim 1, characterized in that: The water holes on the second flat plate distributor (2303) are arranged in a plum blossom shape, and the multiple water holes on the third flat plate distributor (2304) are evenly distributed and arranged, and the multiple water holes cover the surface of the filter screen (22).

3. The wastewater recovery device for a pickling tank according to claim 1, characterized in that: The water holes on the first flat plate distributor (2302), the second flat plate distributor (2303) and the third flat plate distributor (2304) are arranged in a staggered manner.

4. The wastewater recovery device for a pickling tank according to claim 1, characterized in that: The diameter of the water holes on the first flat plate distributor (2302) is 6 mm, the diameter of the water holes on the second flat plate distributor (2303) is 5 mm, and the diameter of the water holes on the third flat plate distributor (2304) is 4 mm.

5. The wastewater recovery device for a pickling tank according to claim 1, characterized in that: A cleaning brush (2506) is fixedly arranged on the outer front side of the vacuum head (2502), and the cleaning brush (2506) is the same length as the vacuum head (2502).

6. A wastewater recovery device for a pickling tank according to claim 1, characterized in that: The dust suction pipe (2501) is provided with a valve (2507).

7. The wastewater recovery device for a pickling tank according to claim 1, characterized in that: The wastewater recovery device further comprises a pickling tank (1), a pH regulating tank (3) and a sedimentation treatment tank (4); the pickling tank (1) is connected to the pretreatment mechanism (2) via a pipeline, the pretreatment mechanism (2) is connected to the pH regulating tank (3) via a pipeline, the pH regulating tank (3) is connected to the sedimentation treatment tank (4) via a pipeline, and the sedimentation treatment tank (4) is connected to the recovery tank (5) via a pipeline.

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