A heavy metal wastewater treatment system

Abstract

This invention relates to the field of wastewater treatment technology. Specifically, it relates to a heavy metal wastewater treatment system, comprising a tank, an S-shaped water flow channel located within the tank and formed by two baffles distributed vertically, and a raw water treatment device for pre-treating polluted water. The raw water treatment device is located on the left side of the S-shaped water flow channel and includes a rotating drum mechanism for evenly distributing the incoming water flow. The invention utilizes a linkage mechanism. As the linkage mechanism rotates with the ring gear, the octopus gear drives the rotating baffles to flip, thus enabling timed cleaning of isolated impurities. Furthermore, the linkage bar causes the receiving frame to shake, increasing the mixing speed of the conditioning liquid, allowing for rapid control of pH, and facilitating quick mixing with the conditioning liquid, thereby improving the efficiency of heavy metal wastewater treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and specifically to a heavy metal wastewater treatment system. Background Technology

[0002] Heavy metal wastewater treatment refers to the process of removing heavy metals from wastewater and then recycling or rendering it harmless. Heavy metal wastewater is generated in many production processes in industries such as mining and metallurgy, machinery manufacturing, chemical engineering, electronics, and instrumentation.

[0003] Existing heavy metal wastewater treatment requires multiple treatment operations. First, impurities in the water are removed, and then the removed impurities or particulate matter are discharged. Next, the water undergoes coagulation and sedimentation, sludge treatment, and pH adjustment. Finally, it is treated by reverse osmosis. This process is carried out in separate areas, requiring specialized equipment for combined treatment. This is inefficient, especially in treating internal impurities, which affects the use of subsequent equipment and puts a burden on it. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a heavy metal wastewater treatment system.

[0005] The technical solution of this invention is implemented as follows: A heavy metal wastewater treatment system includes a tank, an S-shaped water flow channel, the S-shaped water flow channel being disposed within the tank and formed by two baffles distributed vertically; a wastewater treatment device, the wastewater treatment device being used to pretreat the wastewater, the wastewater treatment device being disposed on the left side of the S-shaped water flow channel, the wastewater treatment device including a rotating drum mechanism, the rotating drum mechanism being used to evenly distribute the incoming water flow, and a differential speed separation net mechanism being disposed above the rotating drum mechanism, the differential speed separation net mechanism being used to isolate large-diameter substances in the wastewater;

[0006] A sludge collection device is provided in the inner cavity of the rotary drum mechanism for filtering the wastewater screened by the rotary drum mechanism. The sludge collection device includes a fixed part, which is fixedly connected to the housing. A sliding part is provided on the fixed part, and a sludge pump is provided inside the sliding part.

[0007] An oscillating conditioning tank is connected to the wastewater treatment device, and the oscillating conditioning tank is used to treat the wastewater with alkalinity.

[0008] A separation mechanism is fixedly connected to one side of the rotary drum mechanism. The separation mechanism is used to achieve separation after the differential separation net mechanism rotates and moves by an angle.

[0009] The linkage mechanism consists of two linkage mechanisms, which are respectively arranged on the front and rear sides of the rotating drum mechanism. The bottom end of the linkage mechanism is connected to one side of the oscillation regulating tank. When the rotating drum mechanism rotates, the linkage mechanism causes the separation mechanism to rotate while simultaneously causing the oscillation regulating tank to sway.

[0010] Furthermore, the housing includes a flow box, a wastewater inlet is provided on the top left side of the flow box, a through groove is provided on the left side of the front of the flow box, a baffle is provided inside the flow box, an inclined plate filter membrane is provided between the two baffles, and a reverse osmosis membrane is provided on the right side of the right baffle.

[0011] Furthermore, the rotating drum mechanism is driven to rotate by a drive motor located on the outer side. The rotating drum mechanism includes a fixed drum body part and a rotating part, wherein the rotating part rotates on the fixed drum body part, wherein:

[0012] The fixed barrel part includes an open cylindrical barrel, an arc-shaped filter plate is fitted inside the open cylindrical barrel, a longitudinal baffle is fixedly connected to the top opening of the open cylindrical barrel, arc-shaped side plates are provided on both the front and rear sides of the longitudinal baffle, and a drain plate is provided at the bottom of the fixed barrel part.

[0013] The rotating part includes a middle filter screen, with rotating rings fixedly connected to both the front and rear sides of the middle filter screen. An annular toothed ring is fixedly connected to the outer side of the rotating ring, and support gears are meshed around the annular toothed ring. The support gears are located on one side of the inner wall of the box, and a separation mechanism is provided corresponding to the position of the longitudinal baffle.

[0014] Furthermore, the separation mechanism includes a fixed plate, a rotating baffle is rotatably provided on the top of the fixed plate, and a capsule groove is provided on the rotating baffle.

[0015] Further, the differential separation net mechanism includes a fixed arc-shaped net mechanism and a movable arc-shaped net mechanism. The left side of the fixed arc-shaped net mechanism is fixedly connected to the right side of the rotating baffle. The left end of the movable arc-shaped net mechanism passes through multiple capsule slots. The fixed arc-shaped net mechanism and the movable arc-shaped net mechanism are staggered. The right end of the fixed arc-shaped net mechanism is located to the right of the movable arc-shaped net mechanism, wherein:

[0016] The fixed arc-shaped mesh mechanism includes multiple arc-shaped strips, the left side of which is fixedly connected to the right side of the rotating baffle, and the right sides of the multiple arc-shaped strips are fixedly connected by a comb rod.

[0017] The movable arc-shaped mesh mechanism includes multiple arc-shaped strips II, with the left side of each arc-shaped strip II penetrating the capsule groove. The left sides of the multiple arc-shaped strips II are fixedly connected by longitudinal rods. Connecting strips parallel to the comb rods are provided on the right side of the multiple arc-shaped strips II. Comb rods II are provided on the right side of the multiple connecting strips. Multiple arc-shaped strips I and multiple arc-shaped strips II are alternately arranged. One side of the comb rod I contacts the multiple connecting strips.

[0018] Furthermore, the linkage mechanism includes an arc-shaped rack with an arc-shaped groove. A limit rod is provided in the arc-shaped groove, and one side of the limit rod is fixedly connected to the arc-shaped side plate. An octopus gear is provided on the upper left support gear. A linkage bar is hinged to the bottom end of the arc-shaped rack, and the bottom end of the linkage bar is hinged to one side of the oscillation regulating pool. A push bar is hinged to the inner side of the arc-shaped rack, and a first offset rod and a second offset rod are hinged to the other end of the push bar. A fixing rod is provided through the bottom end of the second offset rod, and one end of the fixing rod is fixedly connected to one side of the inner wall of the box. A pull bar is hinged to the outer side of the rotating baffle, and the middle part of the pull bar is hinged to the top end of the first offset rod. A sliding groove is provided on the pull bar, and a sliding rod is provided in the sliding groove. One side of the sliding rod is fixedly connected to one side of the box.

[0019] Furthermore, the oscillation regulating tank includes a liquid receiving frame, a membrane structure is provided inside the liquid receiving frame, and a fixing strip is provided on the liquid receiving frame. The outer ends of the two fixing strips are hinged to elastic telescopic rods, and one side of the elastic telescopic rod is fixedly connected to one side of the baffle.

[0020] Furthermore, it also includes an elastic reset mechanism, which includes a rotating sleeve fixedly connected to the surface of the fixed barrel portion. A rotating rod is provided inside the rotating sleeve, and a rotating block is elastically sleeved on the rotating rod. A connecting plate is provided on the top of the rotating block, and one side of the connecting plate is fixedly connected to the outside of the rotating baffle. A sliding sleeve is fixedly connected to the top side of the rotating block, and an extension plate is elastically connected inside the sliding sleeve. A sliding shaft is fixedly connected to the front and rear sides of the extension plate. The outer end of the sliding shaft passes through a movable opening provided on the sliding sleeve, and a pulling rod is hinged to the outer end of the sliding shaft. A limit strip is movably provided on the pulling rod, and the bottom end of the limit strip is hinged to one side of the inner wall of the rotating block.

[0021] Furthermore, a fixed post is fixedly connected to the outer end of the protruding plate, and a collar is hinged to one side of the fixed post via a movable strip. The collar is sleeved on the longitudinal rod.

[0022] The present invention has the following beneficial effects:

[0023] 1. The use of the linkage mechanism in this invention: During the rotation of the ring gear, the octopus gear can drive the rotating baffle to flip, which can achieve timed cleaning of isolated impurities. Moreover, through the linkage bar, the liquid receiving frame will shake, which improves the mixing speed of the conditioning liquid, can quickly control the pH, and can quickly mix with the conditioning liquid, thus improving the efficiency of heavy metal wastewater treatment.

[0024] 2. The present invention features a fixed arc-shaped mesh mechanism and a movable arc-shaped mesh mechanism. The fixed arc-shaped mesh mechanism is fixed inside the rotating baffle. When the rotating baffle rotates, the fixed arc-shaped mesh mechanism can rotate with the rotating baffle to an inclined state. As the fixed arc-shaped mesh mechanism rotates, the movable arc-shaped mesh mechanism is lifted due to the staggered arrangement of the fixed arc-shaped mesh mechanism and the movable arc-shaped mesh mechanism. This allows for the removal of impurities concentrated on the surfaces of the fixed arc-shaped mesh mechanism and the movable arc-shaped mesh mechanism. The staggered arrangement of the fixed arc-shaped mesh mechanism and the movable arc-shaped mesh mechanism not only cleans impurities but also allows for rapid removal of impurities accumulated on the surface through rotation.

[0025] 3. When the second arc-shaped strip and the first arc-shaped strip rotate synchronously to the critical position on the rotating baffle, they are accelerated by the pulling rod. This causes the rotation center of the second arc-shaped strip to move outward and backward and downward. The rotation point of the second arc-shaped strip is not fixed. As the second arc-shaped strip and the first arc-shaped strip flip to an inclined state, the second arc-shaped strip can continue to flip outward and move downward. In this way, impurities attached to the surface of the second arc-shaped strip and the first arc-shaped strip can be completely peeled off during the external discharge process, so that the adhering impurities can be completely peeled off during the process of the gap between the second arc-shaped strip and the first arc-shaped strip. This can improve the cleaning effect and automatically realize the external discharge of impurities.

[0026] 4. The elastic reset mechanism of this invention not only supports the rotating baffle, but also quickly resets it after the rotating baffle flips. In addition, the extended plate elastically connected inside the sliding sleeve retracts during rotation under the limit of the pulling rod, thereby achieving differential speed adjustment. This allows the second arc-shaped strip and the first arc-shaped strip to gradually separate in an inclined state, improving the efficiency of cleaning impurities and quickly peeling off the impurities adhering to the second arc-shaped strip and the first arc-shaped strip, thus improving the processing effect. Attached Figure Description

[0027] Figure 1 This is a front view of a heavy metal wastewater treatment system according to the present invention;

[0028] Figure 2 This is a front sectional view of a heavy metal wastewater treatment system according to the present invention;

[0029] Figure 3 This is a schematic diagram of the rotating drum mechanism in a heavy metal wastewater treatment system of the present invention;

[0030] Figure 4 This is a schematic diagram of a wastewater treatment device in a heavy metal wastewater treatment system according to the present invention;

[0031] Figure 5 This is a schematic diagram of the wastewater treatment mechanism and the liquid receiving frame in a heavy metal wastewater treatment system of the present invention;

[0032] Figure 6 This is a schematic diagram of the linkage mechanism in a heavy metal wastewater treatment system of the present invention;

[0033] Figure 7 This is a schematic diagram of the oscillation equalization tank in a heavy metal wastewater treatment system of the present invention.

[0034] Figure 8 This is a schematic diagram of a rotating baffle in a heavy metal wastewater treatment system according to the present invention;

[0035] Figure 9 This is a schematic diagram of a fixed arc-shaped mesh mechanism and a movable arc-shaped mesh mechanism in a heavy metal wastewater treatment system of the present invention;

[0036] Figure 10 This is a schematic diagram of a fixed arc-shaped mesh mechanism in a heavy metal wastewater treatment system of the present invention;

[0037] Figure 11 This is a schematic diagram of the movable arc-shaped mesh mechanism in a heavy metal wastewater treatment system of the present invention;

[0038] Figure 12 This is a cross-sectional view of an elastic reset mechanism in a heavy metal wastewater treatment system according to the present invention.

[0039] Figure 13 This is a schematic diagram of an elastic reset mechanism in a heavy metal wastewater treatment system of the present invention;

[0040] Figure 14 This is a side view of the separation mechanism in a heavy metal wastewater treatment system of the present invention;

[0041] Figure 15 This is a schematic diagram of the elastic reset mechanism and the longitudinal rod in a heavy metal wastewater treatment system of the present invention. Detailed Implementation

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please refer to 1 to Figure 2 The heavy metal wastewater treatment system shown includes a tank 1 and an S-shaped water flow channel. The S-shaped water flow channel is located inside the tank 1 and is formed by two baffles 104 distributed vertically. The tank 1 includes a flow box 101. A wastewater inlet 103 is located on the top left side of the flow box 101. A through groove 102 is located on the left side of the front of the flow box 101. Baffles 104 are located inside the flow box 101. An inclined plate filter membrane is located between the two baffles 104. A reverse osmosis membrane 12 is located on the right side of the right baffle 104. The reverse osmosis membrane 12 is made of PES with a molecular weight cutoff of 2000-400 Daltons. It is alkali-resistant and has strong fouling resistance. The membrane system concentrates heavy metals. After concentration, the pH can be adjusted to further remove heavy metal ions. The pH is controlled at 10-12 in this stage. According to the heavy metal solubility product calculation, heavy metal ions can be further removed. The concentrated membrane water can be returned to the first pH adjustment tank to provide a certain alkalinity for pH adjustment.

[0044] By setting two baffles 104 inside the process box 101, which are arranged vertically to form an S-shaped water flow channel, when the water flows in from top to bottom, the impurities and sludge in the water flow are first isolated, and then the impurities and sludge are separated. Moreover, the filtered wastewater flows back from below into the space between the two baffles 104. After being filtered by the inclined plate filter membrane, the reverse osmosis membrane in the inclined plate filter membrane undergoes the first reverse osmosis treatment, and then the heavy metals in the water are treated. In addition, the inclined plate filter membrane can filter out small particles inside, so that the isolated small particles of impurities are concentrated below the space between the two baffles 104, which makes it easier to concentrate the small particles of impurities.

[0045] See Figures 2 to 5 The wastewater treatment device shown is used to pretreat wastewater. The wastewater treatment device is located on the left side of the S-shaped water flow channel. The wastewater treatment device includes a rotating drum mechanism 2, which is used to evenly distribute the incoming water flow. A differential speed separation net mechanism is provided above the rotating drum mechanism 2, which is used to isolate large-diameter substances in the wastewater.

[0046] Specifically, when treating wastewater centrally, the rotating drum mechanism 2 is designed with an upward-opening design to receive external wastewater. During the rotation of the internal rotating drum mechanism 2, the incoming water flow can be guided, and the differential separation mesh mechanism isolates impurities in the incoming wastewater on the upper surface. Under the flushing of the wastewater, the impurities can undergo secondary treatment, removing sand and gravel from large impurities. The rotating drum mechanism 2 is always in a rotating state. The advantage of this design is that, since the isolation mechanism above causes differences in the flow rate of the water, the rotating drum mechanism 2 can ensure a uniform flow of water and can also dynamically clean blockage points.

[0047] See Figure 4 and Figure 5As shown, the rotating drum mechanism 2 is driven to rotate by a drive motor 10 located on the outside. The rotating drum mechanism 2 includes a fixed barrel part 21 and a rotating part. The rotating part rotates within the fixed barrel part 21. The fixed barrel part 21 includes an open cylindrical barrel. An arc-shaped filter plate 28 is fitted inside the open cylindrical barrel. A longitudinal baffle 24 is fixedly connected to the top opening of the open cylindrical barrel. Arc-shaped side plates 23 are provided on both the front and rear sides of the longitudinal baffle 24. A drain plate 22 is provided at the bottom of the fixed barrel part 21. The rotating part includes a middle filter screen 27. A rotating ring 25 is fixedly connected to both the front and rear sides of the middle filter screen 27. An annular gear ring 26 is fixedly connected to the outer side of the rotating ring 25. Support gears 29 are meshed around the annular gear ring 26. The support gears 29 are located on one side of the inner wall of the box body 1. A separation mechanism 9 is provided at the position corresponding to the longitudinal baffle 24.

[0048] The drive motor 10 is connected to the support gear 29 on the upper left side of the front side, so that the drive motor 10 can drive the support gear 29 to rotate. In this way, the support gear 29 can drive the ring gear 26 to rotate, and the ring gear 26 can cause the middle filter screen 27 inside the open barrel to rotate. Two baffles are set on the upper side of the water plate 22. The baffles can contact the outer wall of the middle filter screen 27, thereby isolating the filtered mud and sand on the outer surface of the middle filter screen 27. When the middle filter screen 27 rotates, the mud and sand can move in the direction of rotation of the middle filter screen 27, so that the middle filter screen 27 can disperse the mud and sand. This helps to disperse the mud and sand through the mesh into the sludge collection device 3. The advantage of this setting is that the mud and sand in the treated wastewater can be collected first, avoiding the excessive amount of sand entering the sludge collection device 3. This ensures that the filter screen in the sludge collection device 3 always filters below the filtration capacity, and the phenomenon of mud and sand getting stuck in the filter screen will not occur.

[0049] See Figure 4 and Figure 5 The sludge collection device 3 shown is installed in the inner cavity of the rotary drum mechanism 2 and is used to filter the wastewater screened by the rotary drum mechanism 2. The sludge collection device 3 includes a fixed part 31, which is fixedly connected to the box 1. A sliding part 32 is provided on the fixed part 31, and a sludge pump 33 is provided in the sliding part 32.

[0050] The sludge pump 33 is located on the back of the housing 1. Two suction pipes pass through the round opening on one side of the fixed part 31 and are inserted into it. The fixed part 31 is used to support the sliding part 32. The sliding part 32 can be pulled out from the through groove 102. Before pulling it out, observe the position of the middle part of the linkage mechanism 4. When the linkage mechanism 4 blocks the fixed part 31, the linkage mechanism 4 can be squeezed outward by hand to make it leave the path of the fixed part 31. This allows the residual sludge after being sucked out by the sludge pump 33 to be removed. The fixed part 31 is also provided with permeable holes on the vertical outer side to filter the incoming mud and water, so that the sludge is concentrated inside the fixed part 31, which facilitates sludge recycling and separation.

[0051] See Figure 4 and Figure 7 The oscillating conditioning tank 5 shown is connected to the wastewater treatment device. The oscillating conditioning tank 5 is used to treat wastewater with alkalinity. The oscillating conditioning tank 5 includes a liquid receiving frame 51, a membrane structure 52 is provided inside the liquid receiving frame 51, and a fixing strip 55 is provided on the liquid receiving frame 51. The outer ends of the two fixing strips 55 are hinged to elastic telescopic rods 54, and one side of the elastic telescopic rod 54 is fixedly connected to one side of the baffle 104.

[0052] The oscillating regulating tank 5 is located directly below the drain channel to receive filtered water. A filter screen is installed on the top edge of the receiving frame 51. After receiving the filtered liquid, the externally supplied regulating liquid enters the receiving frame 51. The receiving frame 51 is affected by the rotation of the rotating drum mechanism 2 and, through the action of the linkage mechanism 4, the elastic telescopic rod 54, which is movable on the left side of the baffle 104, extends and retracts. During its left-right movement, both ends sway up and down, allowing for rapid mixing with the regulating liquid after receiving the liquid. This controls the pH value of the external water between 8 and 10. The purpose of this design is to quickly control the acidity and alkalinity and rapidly mix with the regulating liquid, thus improving the efficiency of regulation and achieving a higher pH value than traditional methods. The specific control value is determined by estimation. Based on the detected acidity and alkalinity of the source water, the approximate capacity of the receiving frame 51 is calculated, and the approximate amount of regulating liquid entering is adjusted. Furthermore, the water can be filtered again.

[0053] See Figure 8 The separation mechanism 9 shown is fixedly connected to one side of the rotating drum mechanism 2. The separation mechanism 9 is used to achieve separation after the differential separation net mechanism rotates and moves by an angle. The separation mechanism 9 includes a fixed strip 93, and a rotating baffle 91 is rotatably provided on the top of the fixed strip 93. A capsule groove 92 is provided on the rotating baffle 91.

[0054] The capsule groove 92 is used to allow the left end of the arc-shaped strip 61 to pass through, and the lower inner wall of the capsule groove 92 is elastically connected to the arc-shaped strip 61. The purpose of this design is to prevent the arc-shaped strip 61 from impacting during the flipping process due to excessive accumulation of material on its surface, thereby improving its service life. Moreover, the elasticity also allows the arc-shaped strip 61 to shake, ensuring that the accumulated material on it slides down quickly. Combined with the rotating baffle 91, this can improve the cleaning speed and efficiency.

[0055] See Figure 5 and Figure 6 The linkage mechanism 4 shown has two components, which are respectively arranged on the front and rear sides of the rotating drum mechanism 2. The bottom end of the linkage mechanism 4 is connected to one side of the oscillation regulating tank 5. When the rotating drum mechanism 2 rotates, the linkage mechanism 4 causes the separation mechanism 9 to rotate and the oscillation regulating tank 5 to shake. The linkage mechanism 4 includes an arc-shaped rack 41 with an arc-shaped groove 42. A limit rod 43 is provided in the arc-shaped groove 42. One side of the limit rod 43 is fixedly connected to the arc-shaped side plate 23. An octopus gear 44 is provided on the upper left support gear 29. The bottom end of the arc-shaped rack 41 is hinged to the linkage bar 41. 2. The bottom end of the linkage bar 412 is hinged to one side of the oscillation regulating pool 5. The inner side of the arc-shaped rack 41 is hinged to the push bar 410. The other end of the push bar 410 is hinged to the first offset rod 48 and the second offset rod 49. The bottom end of the second offset rod 49 is provided with a fixing rod 411. One end of the fixing rod 411 is fixedly connected to one side of the inner wall of the box 1. The outer side of the rotating baffle 91 is hinged to the pull bar 45. The middle part of the pull bar 45 is hinged to the top end of the first offset rod 48. The pull bar 45 is provided with a sliding groove 46. A sliding rod 47 is provided in the sliding groove 46. One side of the sliding rod 47 is fixedly connected to one side of the box 1.

[0056] When the linkage mechanism 4 is in use, the support gear 29 is rotated by the ring gear 26, so the octopus gear 44 on the support gear 29 can rotate accordingly. The octopus gear 44 includes a semi-circular wheel and a semi-gear, which are fixedly connected. When the semi-circular wheel rotates, the semi-circular wheel contacts the arc-shaped rack 41, while the arc-shaped rack 41 remains stationary. When the semi-circular wheel moves away, the semi-gear gradually meshes with the arc-shaped rack 41. Since the arc-shaped groove 42 on the arc-shaped rack 41 can move upward on the limiting rod 43, and since the semi-gear is protruding, the arc-shaped rack 41 can move upward and outward, thus pushing the arc-shaped rack 41. The bar 410 is pushed outward, causing the connection between the first offset rod 48 and the second offset rod 49 to bend outward. This reduces the distance between the two ends of the first offset rod 48 and the second offset rod 49, causing the first offset rod 48 to pull the pull bar 45 downward. This pull bar 45 causes the rotating baffle 91 to flip. At the same time, the arc-shaped rack 41 drives the linkage bar 412 to move upward. The bottom end of the linkage bar 412 moves outward when it is lifted. When the half gear passes by, the semi-circular wheel contacts the arc-shaped rack 41, causing the liquid receiving frame 51 to shake. This allows the liquid receiving frame 51 to adjust the pH value, thus increasing the efficiency of the adjustment.

[0057] See Figures 3 to 5 , Figures 8 to 11 The differential separation net mechanism shown includes a fixed arc-shaped net mechanism 7 and a movable arc-shaped net mechanism 6. The left side of the fixed arc-shaped net mechanism 7 is fixedly connected to the right side of the rotating baffle 91. The left end of the movable arc-shaped net mechanism 6 passes through multiple capsule slots 92. The fixed arc-shaped net mechanism 7 and the movable arc-shaped net mechanism 6 are arranged alternately, and the right end of the fixed arc-shaped net mechanism 7 is located to the right of the movable arc-shaped net mechanism 6.

[0058] The fixed arc-shaped mesh mechanism 7 and the movable arc-shaped mesh mechanism 6 are configured such that the fixed arc-shaped mesh mechanism 7 is fixed inside the rotating baffle 91. When the rotating baffle 91 rotates, the fixed arc-shaped mesh mechanism 7 can rotate with the rotating baffle 91 to an inclined state. As the fixed arc-shaped mesh mechanism 7 and the movable arc-shaped mesh mechanism 6 are staggered, the movable arc-shaped mesh mechanism 6 can be lifted up. This allows the concentrated impurities on the surfaces of the fixed arc-shaped mesh mechanism 7 and the movable arc-shaped mesh mechanism 6 to be discharged. The staggered arrangement of the fixed arc-shaped mesh mechanism 7 and the movable arc-shaped mesh mechanism 6 can not only clean the impurities, but also allow the surface impurities to be quickly discharged by rotation.

[0059] Specifically, the fixed arc-shaped mesh mechanism 7 includes multiple arc-shaped strips 71, the left side of which is fixedly connected to the right side of the rotating baffle 91, and the right side of which is fixedly connected by comb rods 72; the movable arc-shaped mesh mechanism 6 includes multiple arc-shaped strips 61, the left side of which passes through the capsule groove 92, and the left side of which is fixedly connected by longitudinal rods 62; the right side of which is provided with connecting strips 63 parallel to comb rods 72, and the right side of which is provided with comb rods 64; the multiple arc-shaped strips 71 and multiple arc-shaped strips 61 are alternately arranged, and one side of the comb rods 72 contacts the multiple connecting strips 63.

[0060] Since one side of the comb rod 72 is in contact with multiple connecting strips 63, when the comb rod 72 rotates, it can lift the positions of the multiple connecting strips 63 from below. When the arc-shaped strip 61 and the arc-shaped strip 71 cooperate, they can form an isolation area. After flipping, since the arc-shaped strip 61 passes through the capsule groove 92, the weight of the arc-shaped strip 61 and the longitudinal rod 62 set on the left side will cause the movable arc-shaped mesh mechanism 6 to move downward a certain distance, thereby pulling the impurities accumulated on the surface outward, which can quickly peel off the impurities.

[0061] See Figures 12 to 15 As shown, it also includes an elastic reset mechanism 11, which includes a rotating sleeve 111 fixedly connected to the surface of the fixed barrel part 21. A rotating rod 112 is provided inside the rotating sleeve 111, and a rotating block 113 is elastically sleeved on the rotating rod 112. A connecting plate 114 is provided on the top of the rotating block 113, and one side of the connecting plate 114 is fixedly connected to the outside of the rotating baffle 91. A sliding sleeve 118 is fixedly connected to one side of the top of the rotating block 113, and an extension plate 120 is elastically connected inside the sliding sleeve 118. The front and rear sides of the protruding plate 120 are fixedly connected to the sliding shaft 117. The outer end of the sliding shaft 117 is provided with a movable opening 119 that passes through the sliding sleeve 118. The outer end of the sliding shaft 117 is hinged to the pulling rod 116. The pulling rod 116 is movably provided with a limit strip 115. The bottom end of the limit strip 115 is hinged to one side of the inner wall of the rotating sleeve 113. The outer end of the protruding plate 120 is fixedly connected to the fixing post 121. One side of the fixing post 121 is hinged to a collar 123 through a movable strip 122. The collar 123 is sleeved on the longitudinal rod 62.

[0062] When the rotating baffle 91 rotates, it drives the rotating block 113 on the connecting plate 114 to rotate on the rotating rod 112. This causes the torsion spring on the rotating rod 112 to rotate, and consequently, the sliding sleeve 118 on the rotating block 113 rotates. Since the collar 123 is fitted onto the longitudinal rod 62, during the rotation of the rotating baffle 91, the bottom end of the limiting strip 115 is hinged to one side of the inner wall of the rotating sleeve 113. Therefore, when the sliding sleeve 118 rotates, the pulling rod 116 can pull the extension plate 120 inward through the sliding shaft 117. This extension plate 120 causes the fixed post 121 to move, and the fixed post 121, in turn, drives the collar 123 to further pull the longitudinal rod 62 downward at normal rotation speed. This results in the arc-shaped strip 61 and... When the first arc-shaped strip 71 rotates synchronously with the rotating baffle 91 to the critical position, it is pulled by the pulling rod 116, which accelerates the second arc-shaped strip 61 and causes its rotation center to move outward and downward. The rotation point of the second arc-shaped strip 61 is not fixed. As the second arc-shaped strip 61 and the first arc-shaped strip 71 flip to an inclined state (that is, rotate to the critical position), the second arc-shaped strip 61 can continue to flip outward and move downward. In this way, the impurities attached to the surface of the second arc-shaped strip 61 and the first arc-shaped strip 71 can be completely peeled off during the external discharge process. This improves the cleaning effect and automatically realizes the external discharge of impurities.

[0063] Furthermore, the elastic reset mechanism 11 not only supports the rotating baffle 91, but also quickly resets it after the rotating baffle 91 flips. In addition, the extended plate 120, which is elastically connected inside the sliding sleeve 118, retracts during rotation under the limit of the pulling rod 116, thereby achieving differential speed adjustment. This allows the second arc strip 61 and the first arc strip 71 to gradually separate in an inclined state, improving the efficiency of cleaning impurities and quickly peeling off the impurities adhering to the second arc strip 61 and the first arc strip 71, thus improving the processing effect.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy metal wastewater treatment system, comprising a housing (1), characterized in that: The S-shaped water flow channel is located inside the box (1) and is formed by two baffles (104) distributed vertically. Wastewater treatment device, the wastewater treatment device is used to pretreat wastewater, the wastewater treatment device is located on the left side of the S-shaped water flow channel, the wastewater treatment device includes a rotating drum mechanism (2), the rotating drum mechanism (2) is used to evenly distribute the incoming water flow, and a differential speed separation net mechanism is provided above the rotating drum mechanism (2), the differential speed separation net mechanism is used to isolate large-diameter substances in the wastewater; The rotating drum mechanism (2) is driven to rotate by a drive motor (10) located on the outside. The rotating drum mechanism (2) includes a fixed drum body part (21) and a rotating part. The rotating part rotates in the fixed drum body part (21), wherein: The fixed barrel part (21) includes an open cylindrical barrel, an arc-shaped filter plate (28) is fitted inside the open cylindrical barrel, a longitudinal baffle (24) is fixedly connected to the top opening of the open cylindrical barrel, arc-shaped side plates (23) are provided on both the front and rear sides of the longitudinal baffle (24), and a drain plate (22) is provided at the bottom of the fixed barrel part (21). The rotating part includes a middle filter screen (27), and rotating rings (25) are fixedly connected to both the front and rear sides of the middle filter screen (27). An annular toothed ring (26) is fixedly connected to the outer side of the rotating ring (25). Support gears (29) are meshed around the annular toothed ring (26). The support gears (29) are located on one side of the inner wall of the housing (1). A separation mechanism (9) is provided at the position corresponding to the longitudinal baffle (24). The sludge collection device (3) is installed in the inner cavity of the rotary drum mechanism (2) and is used to filter the wastewater screened by the rotary drum mechanism (2). The sludge collection device (3) includes a fixed part (31), which is fixedly connected to the box body (1). A sliding part (32) is provided on the fixed part (31), and a sludge pump (33) is provided in the sliding part (32). An oscillating conditioning tank (5) is connected to the wastewater treatment device and is used to treat the wastewater with alkalinity. Separation mechanism (9), the separation mechanism (9) is fixedly connected to one side of the rotating drum mechanism (2), the separation mechanism (9) is used to achieve separation after the differential separation net mechanism rotates and moves by an angle, the separation mechanism (9) includes a fixed strip plate (93), the top of the fixed strip plate (93) is rotatably provided with a rotating baffle (91), and the rotating baffle (91) is provided with a capsule groove (92). The differential separation net mechanism includes a fixed arc-shaped net mechanism (7) and a movable arc-shaped net mechanism (6). The left side of the fixed arc-shaped net mechanism (7) is fixedly connected to the right side of the rotating baffle (91). The left end of the movable arc-shaped net mechanism (6) passes through multiple capsule slots (92). The fixed arc-shaped net mechanism (7) and the movable arc-shaped net mechanism (6) are staggered. The right end of the fixed arc-shaped net mechanism (7) is located to the right of the movable arc-shaped net mechanism (6). Linkage mechanism (4), there are two linkage mechanisms (4), the two linkage mechanisms (4) are respectively arranged on the front and rear sides of the rotating drum mechanism (2), the bottom end of the linkage mechanism (4) is connected to one side of the oscillation regulating tank (5), when the rotating drum mechanism (2) rotates, the linkage mechanism (4) causes the separation mechanism (9) to rotate and the oscillation regulating tank (5) to shake.

2. The heavy metal wastewater treatment system according to claim 1, characterized in that: The housing (1) includes a flow box (101), a wastewater inlet (103) is provided on the top left side of the flow box (101), a through groove (102) is provided on the left side of the front of the flow box (101), a baffle (104) is provided in the flow box (101), an inclined plate filter membrane is provided between the two baffles (104), and a reverse osmosis membrane (12) is provided on the right side of the right baffle (104).

3. The heavy metal wastewater treatment system according to claim 1, characterized in that: The fixed arc mesh mechanism (7) includes multiple arc strips (71), the left side of which is fixedly connected to the right side of the rotating baffle (91), and the right sides of the multiple arc strips (71) are fixedly connected by comb rods (72). The movable arc-shaped mesh mechanism (6) includes multiple arc-shaped strips (61), the left side of which passes through the capsule groove (92), the left side of which is fixedly connected by a longitudinal rod (62), the right side of which is provided with a connecting strip (63) parallel to the comb rod (72), the right side of which is provided with a comb rod (64), the multiple arc-shaped strips (71) and the multiple arc-shaped strips (61) are alternately arranged, and one side of the comb rod (72) is in contact with the multiple connecting strips (63).

4. The heavy metal wastewater treatment system according to claim 3, characterized in that: The linkage mechanism (4) includes an arc-shaped rack (41) with an arc-shaped groove (42) on it. A limit rod (43) is provided in the arc-shaped groove (42). One side of the limit rod (43) is fixedly connected to the arc-shaped side plate (23). An octopus gear (44) is provided on the upper left support gear (29). A linkage bar (412) is hinged to the bottom end of the arc-shaped rack (41). The bottom end of the linkage bar (412) is hinged to one side of the oscillation regulating pool (5). A push bar (410) is hinged to the inner side of the arc-shaped rack (41). The other end is hinged to a first offset rod (48) and a second offset rod (49). A fixed rod (411) is provided through the bottom end of the second offset rod (49). One end of the fixed rod (411) is fixedly connected to one side of the inner wall of the box (1). A pull bar (45) is hinged to the outside of the rotating baffle (91). The middle part of the pull bar (45) is hinged to the top end of the first offset rod (48). A sliding groove (46) is provided on the pull bar (45). A sliding rod (47) is provided in the sliding groove (46). One side of the sliding rod (47) is fixedly connected to one side of the box (1).

5. The heavy metal wastewater treatment system according to claim 4, characterized in that: The oscillation regulating tank (5) includes a liquid receiving frame (51), a membrane structure (52) is provided inside the liquid receiving frame (51), a fixing strip (55) is provided on the liquid receiving frame (51), and an elastic telescopic rod (54) is hinged to the outer end of the two fixing strips (55). One side of the elastic telescopic rod (54) is fixedly connected to one side of the baffle (104).

6. The heavy metal wastewater treatment system according to claim 5, characterized in that: It also includes an elastic reset mechanism (11), which includes a rotating sleeve (111) fixedly connected to the surface of the fixed barrel part (21). A rotating rod (112) is provided inside the rotating sleeve (111), and a rotating block (113) is elastically sleeved on the rotating rod (112). A connecting plate (114) is provided on the top of the rotating block (113), and one side of the connecting plate (114) is fixedly connected to the outside of the rotating baffle (91). A sliding sleeve (118) is fixedly connected to the top side of the rotating sleeve (111). An extension plate (120) is elastically connected inside the sliding sleeve (118). A sliding shaft (117) is fixedly connected to the front and rear sides of the extension plate (120). The outer end of the sliding shaft (117) passes through the movable opening provided on the sliding sleeve (118). A pulling rod (116) is hinged to the outer end of the sliding shaft (117). A limit strip (115) is movably provided on the pulling rod (116). The bottom end of the limit strip (115) is hinged to one side of the inner wall of the rotating sleeve (111).

7. A heavy metal wastewater treatment system according to claim 6, characterized in that: The outer end of the protruding plate (120) is fixedly connected to a fixed post (121), and a collar (123) is hinged to one side of the fixed post (121) through a movable strip (122). The collar (123) is sleeved on the longitudinal rod (62).

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