A heavy metal wastewater treatment equipment for molybdenum concentrate hydrometallurgy

Abstract

The application relates to the technical field of heavy metal wastewater treatment devices, in particular to a heavy metal wastewater treatment equipment for molybdenum concentrate hydrometallurgy, which comprises a mixing barrel, a layered plate is fixedly arranged in the mixing barrel, a water inlet pipe is arranged at the lower portion of the mixing barrel, a water outlet pipe is arranged at the upper portion of the mixing barrel, a center pipe is fixedly connected to the upper end of the layered plate, a dosing device is arranged in the center pipe, a driving surface shell is fixedly arranged at the bottom end of the layered plate, a driving device is arranged between the driving surface shell and the center pipe, a vane plate is rotatably arranged at the inner end of the driving surface shell, and a compression sleeve is fixedly arranged at the inner end of the water inlet pipe. The Karman vortex street effect formed by the front end arc surface and the tail end sharp corner structure of the water drop-shaped vane plate in the wastewater flowing process makes the tail end of the vane plate periodically swing, the swing frequency is automatically adjusted with the change of the water flow velocity, and therefore the medicine feeding speed synchronously changes with the water flow velocity.

Description

Technical Field

[0001] This invention relates to the technical field of heavy metal wastewater treatment devices, specifically a heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate. Background Technology

[0002] Hydrometallurgical processing of molybdenum concentrate typically employs an oxidative roasting-leaching process or a direct high-pressure oxygen leaching process. This process generates a large amount of acidic wastewater containing heavy metals (such as copper, lead, zinc, arsenic, cadmium, etc.). This type of wastewater is characterized by high pollutant concentrations, complex composition, and high toxicity. Improper treatment can cause serious harm to the ecological environment and human health.

[0003] A search revealed that prior art publication number CN218689085U discloses a novel high-efficiency treatment device for wastewater containing heavy metals. The device includes a treatment chamber with an automatic dosing mechanism on its inner wall. This mechanism includes a mounting frame fixedly mounted on the inner wall of the treatment chamber, a support rod fixedly mounted on the upper end of the mounting frame, and a storage bin fixedly mounted on the upper end of the support rod. The storage bin has a sliding groove at its upper end and a connecting groove at its inner bottom. A spring is movably mounted inside the connecting groove, and a limiting rod is movably mounted inside the spring. This design utilizes the elasticity of the spring to push a moving plate upwards to move a solid chemical scavenger, which in turn causes a hydraulic cylinder to move a pusher block, thus achieving automatic dosing of the solid chemical scavenger and improving the treatment efficiency of heavy metal wastewater.

[0004] Therefore, based on the above-mentioned search and combined with existing technologies, existing wastewater treatment equipment mostly relies on mechanical stirring or natural diffusion to mix wastewater and reagents. The mixing efficiency is low, which can easily lead to uneven distribution of reagents in wastewater or excessively high local concentrations, thereby affecting the flocculation effect and overall treatment stability. At the same time, the existing system's sensing and feedback adjustment mechanism for changes in wastewater flow rate is not sensitive enough, and it cannot adjust the dosing rate in real time according to changes in flow rate and water quality. As a result, when there are sudden changes in wastewater flow rate or fluctuations in composition, the treatment system responds slowly, which can easily lead to the effluent water quality exceeding the standard and affect the compliance of wastewater discharge. Therefore, this application proposes a heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate. Summary of the Invention

[0005] The purpose of this invention is to provide a heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate, comprising a mixing tank, a layered plate fixedly installed inside the mixing tank, an inlet pipe passing through the lower part of the mixing tank, an outlet pipe passing through the upper part of the mixing tank, a screen detachably installed at the inner end of the mixing tank for filtering flocculated wastewater, a central pipe fixedly connected to the upper end of the layered plate, a dosing device installed inside the central pipe for dosing chemicals into the mixing tank, a driving shell fixedly installed at the bottom end of the layered plate and fixedly connected to the inlet pipe, an outlet pipe fixedly connected to the output end of the driving shell, a driving device installed between the driving shell and the central pipe for intermittent dosing, a blade rotatably installed at the inner end of the driving shell, the blade swinging with the water flow in the inlet pipe, and a compression sleeve fixedly installed at the inner end of the inlet pipe.

[0007] As a further embodiment of the present invention, a dosing box is fixedly installed at the upper end of the mixing tank, a dosing pipe is provided through the upper inner side of the mixing tank, the dosing pipe is located above the central pipe, and the dosing pipe is fixedly connected to the dosing box. A drive motor is fixedly installed at the upper end of the dosing box, a feeding worm is provided through the inner end of the dosing pipe, and the feeding worm is fixedly connected to the output shaft of the drive motor.

[0008] As a further embodiment of the present invention, the driving device includes an isolation sleeve, which is fixedly installed at the bottom end of the layered plate and located above the driving surface shell. The rotating shaft of the blade is fixedly connected to a driving shaft, and the end of the driving shaft away from the blade passes through the inner end of the isolation sleeve. The inner end of the isolation sleeve is rotatably mounted with the driving sleeve, which is located above the driving shaft.

[0009] As a further embodiment of the present invention, a flywheel is rotatably mounted on the inner bottom end of the isolation sleeve. The flywheel is located inside the drive sleeve. Multiple abutment blocks are rotatably mounted on the outer surface of the flywheel. The abutment blocks are arranged in a ring. The abutment blocks and the flywheel are connected by spring pieces. A ratchet ring is fixedly mounted on the inner bottom end of the drive sleeve, and the end of the abutment block away from the flywheel engages with the ratchet ring.

[0010] As a further embodiment of the present invention, a stabilizing tube is provided at the inner end of the central tube, a driving screw is provided at the inner end of the stabilizing tube, and a movable sleeve is slidably installed at the inner end of the stabilizing tube, and the movable sleeve is threaded onto the outer surface of the driving screw. By setting a stabilizing tube at the inner end of the central tube and a driving screw is provided inside the stabilizing tube.

[0011] As a further embodiment of the present invention, a passive block is provided on the side of the stabilizing tube near the driving sleeve, and a passive cover is provided on the end of the passive block near the stabilizing tube. The passive cover is fixedly sleeved on the outer surface of the driving screw. By providing a passive block and a passive cover inside the stabilizing tube, and with the passive cover fixedly sleeved on the outer surface of the driving screw, the axial displacement of the driving screw can be effectively limited, thereby improving the stability of the transmission structure operation.

[0012] As a further embodiment of the present invention, a sealing sleeve is rotatably installed on one end of the passive cover near the stabilizing tube, and the sealing sleeve and the stabilizing tube are fixedly connected by a passive plate. When the driving sleeve rotates, the driving screw is driven to rotate by the passive block. By rotatably installing the sealing sleeve on the passive cover and fixing the sealing sleeve to the stabilizing tube by the passive plate, the driving sleeve rotates to drive the passive block, thereby driving the screw to rotate synchronously, which can achieve stable and reliable transmission linkage.

[0013] As a further embodiment of the present invention, the drug delivery device includes a drug storage bag, which is fixedly sleeved on the outer surface of the stabilizing tube. The outer surface of the central tube has a discharge port, and the outer surface of the drug storage bag has a discharge port, which is connected to the discharge port.

[0014] As a further embodiment of the present invention, a squeezing ring is sleeved on the outer surface of the stabilizing tube. When the squeezing ring moves upward, it squeezes the drug storage bladder to discharge the drug inside. By sleeved with a squeezing ring on the outer surface of the stabilizing tube, the drug storage bladder can be directly squeezed when the squeezing ring moves upward, so as to facilitate the smooth discharge of the drug inside, thereby achieving precise and stable drug dosing control, simplifying the drug discharge structure, and improving drug dosing efficiency and reliability.

[0015] As a further embodiment of the present invention, two sealing plates are rotatably mounted on the outer surface of the central tube, a buffer sleeve is fitted on the outer surface of the stabilizing tube, the compression ring pushes the buffer sleeve to move upward when it moves upward, and a limiting ring is fitted on the outer surface of the stabilizing tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When this invention is used, the Karman vortex street effect formed by the arc surface at the front end and the sharp corner structure at the rear end of the teardrop-shaped blade during the wastewater flow causes the tail end of the blade to oscillate periodically. The oscillation frequency is automatically adjusted with the change of water flow speed, so that the drug application speed changes synchronously with the water flow speed. 2. When using this invention, the vortex generated by the flow of wastewater drives the blades to swing, without the need for additional power and complex speed control devices or complex control systems, thus achieving intelligent adaptive adjustment of the dosing rate. At the same time, the agent flows out from inside the mixing tank, avoiding the problem of local agent concentration being too high or too low that may occur in traditional fixed dosing methods. 3. When using this invention, by setting an ultrasonic device inside the mixing tank, the microbubbles and disturbance effect generated by ultrasonic vibration are used to break the interfacial tension between wastewater and reagent, promote the full and uniform mixing of wastewater and reagent, significantly improve mixing efficiency, and shorten reaction time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate. Figure 2 This is a schematic diagram of the internal structure of the mixing tank; Figure 3 This is a schematic diagram of the internal structure of the drive shell; Figure 4 This is a schematic diagram of the internal structure of the isolation sleeve; Figure 5 This is a schematic diagram of the internal structure of the drive sleeve; Figure 6 This is a schematic diagram of the internal structure of the central tube; Figure 7 This is a schematic diagram of the internal structure of the stabilizer tube; Figure 8 Disassembly diagram showing the positional relationship between the drive sleeve and the stabilizer tube; Figure 9 This is a breakdown diagram showing the positional relationship between the passive cover and the passive block; Figure 10 This is a disassembled diagram showing the positional relationship between the drug reservoir and the stabilizing tube.

[0018] In the diagram: 1. Mixing tank; 2. Funnel; 3. Inlet pipe; 4. Dosing tank; 5. Drive motor; 6. Outlet pipe; 101. Feeding worm gear; 102. Dosing pipe; 103. Screen; 104. Central tube; 105. Layered plate; 106. Drive housing; 107. Output pipe; 201. Blade; 202. Compression sleeve; 203. Drive shaft; 204. Isolation plate; 205. Drive sleeve; 206. Ratchet ring; 207. Abutment block; 208. Drive block; 209. Flywheel; 301. Isolation sleeve; 302. Passive block; 303. Stabilizing tube; 304. Sealing sleeve; 305. Passive cover; 306. Passive plate; 307. Drive screw; 308. Drive gear; 309. Passive gear; 310. Passive gear ring; 401. Connecting sleeve; 402. Limiting ring; 403. Drug reservoir; 404. Sealing plate; 405. Locking buckle; 406. Buffer sleeve; 407. Pushing ring; 408. Mating plate; 409. Sealing block; 410. Compression ring; 411. Movable sleeve. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Example 1: Please refer to Figure 1 - Figure 4 A heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate includes a mixing tank 1. A layered plate 105 is fixedly installed inside the mixing tank 1. An online pH monitor is installed above the layered plate 105. An ultrasonic device is installed inside the mixing tank 1 to assist the mixing of wastewater and reagents through ultrasonic vibration. An inlet pipe 3 passes through the bottom of the mixing tank 1, and an outlet pipe 6 passes through the top of the mixing tank 1. A screen 103 is detachably installed at the inner end of the mixing tank 1. The screen 103 is used to filter the flocculated wastewater and is composed of an ultrafiltration membrane and a reverse osmosis membrane (which can be stacked on top of each other). A central tube 104 is fixedly welded to the upper end of the layered plate 105. A dosing device is installed inside the central tube 104 for dosing reagents into the mixing tank 1. Specifically, an electrochemical flocculation module (not shown in the figure) is set between the central tube 104 and the mixing tank 1, which are the anode and cathode respectively. The inner wall of the mixing tank 1 is made of metal and is conductive, serving as the anode. A graphene-coated electrode is installed on the outer surface of the central tube 104, serving as the cathode. like Figure 2 , Figure 3 As shown, a drive housing 106 is fixedly installed at the bottom of the layered plate 105, and the drive housing 106 is fixedly connected to the inlet pipe 3. A funnel 2 is fixedly connected to the end of the mixing tank 1 away from the layered plate 105 by bolts. A sealing cover is set at the bottom of the funnel 2. After the wastewater flocculates and settles, it accumulates at the bottom of the funnel 2. When cleaning, the sealing cover can be opened to remove the sediment. An output pipe 107 is fixedly welded to the output end of the drive housing 106. The output port of the output pipe 107 faces the funnel 2. A drive device is set between the drive housing 106 and the central pipe 104 to realize intermittent dosing. A blade 201 is rotatably installed at the inner end of the drive housing 106. The blade 201 swings with the water flow of the inlet pipe 3. A compression sleeve 202 is fixedly installed at the inner end of the inlet pipe 3, and the compression sleeve 202 corresponds to the blade 201.

[0021] Specifically, the diameter of the compression sleeve 202 is smaller than the diameter of the inlet pipe 3. When wastewater flows into the compression sleeve 202 from the inlet pipe 3, the flow velocity increases due to the reduced diameter. The high-speed flowing wastewater impacts the blade 201. When the wastewater flows over the blade 201, the arc surface at the front end and the sharp corner structure at the rear end of the teardrop-shaped blade 201 cause uneven pressure distribution, generating periodic vortices (Karman vortex street), which causes periodic oscillation at the rear end. The faster the water flow, the faster the blade 201 oscillates.

[0022] like Figure 2 As shown, a dosing box 4 is fixedly installed on the upper end of the mixing tank 1 by bolts. A dosing pipe 102 is inserted through the upper inner side of the mixing tank 1. The dosing pipe 102 is located above the central pipe 104 and is fixedly connected to the dosing box 4. A drive motor 5 is fixedly installed on the upper end of the dosing box 4 by bolts. A feeding worm gear 101 is inserted through the inner end of the dosing pipe 102 and is fixedly connected to the output shaft of the drive motor 5.

[0023] Example 2: Please refer to Figure 2 , Figure 4 - Figure 9 A heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate, based on Embodiment 1, includes a drive device comprising an isolation sleeve 301, which is fixedly installed at the bottom end of a layered plate 105 and located above a drive housing 106. A drive shaft 203 is fixedly connected to the rotating shaft of a blade 201, and one end of the drive shaft 203 away from the blade 201 passes through the inner end of the isolation sleeve 301. An isolation plate 204 is fixedly installed at the bottom inner side of the isolation sleeve 301 and is sleeved on the outer surface of the drive shaft 203. The isolation plate 204 and the drive shaft 203 are connected by a sealed bearing. A drive sleeve 205 is rotatably installed at the inner end of the isolation sleeve 301 and is located above the drive shaft 203. A flywheel 209 is rotatably mounted on the inner bottom end of the isolation sleeve 301. The flywheel 209 is located inside the drive sleeve 205. Multiple abutment blocks 207 are rotatably mounted on the outer surface of the flywheel 209. The abutment blocks 207 are arranged in a ring. The abutment blocks 207 and the flywheel 209 are connected by spring pieces. A ratchet ring 206 is fixedly mounted on the inner bottom end of the drive sleeve 205. The end of the abutment block 207 away from the flywheel 209 is engaged with the ratchet ring 206. Specifically, when the flywheel 209 rotates forward, the drive sleeve 205 is driven to rotate by the engagement of the abutment block 207 and the ratchet ring 206. When the flywheel 209 rotates in reverse, the abutment block 207 rotates towards the flywheel 209 under the abutment action of the peak of the ratchet ring 206. Then, under the elastic force of the spring piece, it returns to the position of the trough of the ratchet ring 206. like Figure 5 As shown, a drive block 208 is fixedly welded to one end of the drive shaft 203 near the flywheel 209. The drive block 208 passes through the inside of the flywheel 209, and multiple protrusions are fixedly installed on its outer surface. Corresponding grooves are opened at the inner end of the flywheel 209. There is a gap between the protrusions and the grooves, so that the drive shaft 203 drives the drive block 208 to rotate, which provides a buffer space and effectively avoids insufficient torque when driving the flywheel 209.

[0024] like Figure 6 - Figure 9As shown, a stabilizing tube 303 is inserted through the inner end of the central tube 104. A rectangular block is fixedly installed on the outer surface of the stabilizing tube 303. A rectangular groove is opened at the inner end of the central tube 104, and the rectangular block is inserted into the rectangular groove, so that the stabilizing tube 303 avoids rotation during the up and down movement. A driving screw 307 is inserted through the inner end of the stabilizing tube 303. A movable sleeve 411 is slidably installed at the inner end of the stabilizing tube 303, and the movable sleeve 411 is threaded onto the outer surface of the driving screw 307. A rectangular hole is opened on the outer surface of the stabilizing tube 303. An extension plate is fixedly installed on the outer surface of the movable sleeve 411. The extension plate is inserted into the rectangular hole, so that when the driving screw 307 rotates, it can drive the movable sleeve 411 to move up and down, avoiding rotation. When the extension plate on the outer surface of the movable sleeve 411 contacts the upper or lower end of the rectangular hole, and with the continuous rotation of the driving screw 307, the extension plate will drive the stabilizing tube 303 to complete the stroke action of moving up or down. A passive block 302 is provided on the side of the stabilizing tube 303 near the driving sleeve 205. The passive block 302 passes through the inside of the driving sleeve 205. When the driving sleeve 205 rotates, it drives the passive block 302 to rotate. A passive cover 305 is provided on the end of the passive block 302 near the stabilizing tube 303. The passive cover 305 is fixedly sleeved on the outer surface of the driving screw 307. A sealing sleeve 304 is rotatably installed on the end of the passive cover 305 near the stabilizing tube 303. The sealing sleeve 304 and the stabilizing tube 303 are fixedly connected by a passive plate 306. When the driving sleeve 205 rotates, it drives the driving screw 307 to rotate through the passive block 302.

[0025] Specifically, a drive gear 308 is fixedly welded to one end of the passive block 302 near the drive sleeve 205. A stabilizing ring is provided at the upper end of the passive block 302. Multiple passive gears 309 are rotatably mounted on the outer surface of the stabilizing ring, and all passive gears 309 mesh with the drive gear 308. A passive gear ring 310 is fixedly mounted on the inner end of the passive cover 305. After the passive cover 305 moves down, the passive gear ring 310 meshes with the multiple passive gears 309 to form a transmission. When the passive block 302 rotates, the drive gear 308 drives the passive gear 309 group, and finally drives the passive gear ring 310 to make the passive cover 305 rotate in the forward direction. A prismatic ring is fixedly installed at the bottom end of the drive screw 307. The prismatic ring is located below the driven block 302. The bottom end of the driven block 302 is provided with a diamond-shaped groove that matches the prismatic ring. After the drive screw 307 moves upward, the diamond-shaped ring passes through the prismatic groove. Correspondingly, the driven gear ring 310 no longer meshes with the driven gear 309 as the driven cover 305 moves upward.

[0026] Example 3: Please refer to Figure 6 , Figure 10A heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate, based on embodiments 1 and 2, includes a dosing device comprising a storage bladder 403, which is fixedly sleeved on the outer surface of a stabilizing tube 303. The storage bladder 403 is made of soft silicone, which is anti-aging and has good high-temperature resistance. A discharge port is opened on the outer surface of the central tube 104, and a discharge port is opened on the outer surface of the storage bladder 403. The discharge port is connected to the discharge port. A compression ring 410 is sleeved on the outer surface of the stabilizing tube 303. When the compression ring 410 moves upward, it squeezes the storage bladder 403 to discharge the reagent inside (such as ferrous sulfate, sodium sulfide, etc.). The compression ring 410 is fixedly connected to the movable sleeve 411.

[0027] Two sealing plates 404 are rotatably mounted on the outer surface of the central tube 104. The sealing plates 404 are engaged with the central tube 104 by a reset torsion spring. Under the elastic force of the reset torsion spring, the sealing plates 404 block the outlet of the outer surface of the central tube 104. A sealing ring is fitted on the outer surface of the sealing plates 404. When the sealing plates 404 are in contact with the edge of the outlet, they are used to increase the sealing performance. Two locking buckles 405 are rotatably mounted on the outer surface of the central tube 104. The locking buckles 405 are connected to the central tube 104 via a separating membrane to prevent water from the mixing tank 1 from flowing into the central tube 104. One end of the locking buckle 405 away from the central tube 104 is engaged with the outer surface of the sealing plate 404, and the bottom end of the locking buckle 405 extends into the interior of the central tube 104. When the compression ring 410 moves upward to contact the bottom end of the locking buckle 405, it causes the locking buckle 405 to rotate, releasing the lock on the sealing plate 404. When the lowering ring contacts the locking buckle 405 again, it causes the locking buckle 405 to rotate in the opposite direction, relocking the sealing plate 404. It is worth noting that the outer surface of the compression ring 410 does not fit against the inner wall of the central tube 104, allowing the locking buckle 405 to have a certain amount of room to move when rotating. Specifically, the compression ring 410 is made of soft silicone rubber. When the compression ring 410 contacts the locking buckle 405, the outer surface of the compression ring 410 is slightly deformed under the interaction of forces, and then the compression ring 410 returns to its original shape under its own elasticity.

[0028] A buffer sleeve 406 is fitted on the outer surface of the stabilizing tube 303. A return spring is installed inside the buffer sleeve 406. When the compression ring 410 moves upward, it pushes the buffer sleeve 406 upward. As the compression ring 410 continues to move upward, it compresses the buffer sleeve 406. A limiting ring 402 is fitted on the outer surface of the stabilizing tube 303. A pushing ring 407 is fixedly connected to the upper end of the buffer sleeve 406. The upper end of the pushing ring 407 contacts the bottom end of the limiting ring 402. A limiting block is fixedly installed on the outer surface of the stabilizing tube 303. The limiting ring 402 is located above the limiting block to prevent the limiting ring 402 from falling downward under the action of gravity. A connecting sleeve 401 is fixedly connected to the upper end of the central tube 104. A through hole is opened at the inner end of the connecting sleeve 401, and a sealing block 409 is inserted in each through hole. Specifically, the upper end of the sealing block 409 is triangular, so that the medicine can fall smoothly into the medicine storage bag 403 along the inclined surface of the triangle. The size of the through hole is adapted to the size of the sealing block 409. A sealing rubber ring is fitted on the outer surface of the sealing block 409. When the sealing block 409 blocks the through hole, it is used to increase the sealing performance. The sealing block 409 and the limiting ring 402 are fixedly connected by a mating plate 408. The connecting sleeve 401 is fixedly connected to the drug delivery tube 102.

[0029] like Figure 2 , Figure 10 As shown, the inside of the stabilizing tube 303 is equipped with a linear sensor that can detect the movement state of the movable sleeve 411. When the movable sleeve 411 moves to the bottom of the stabilizing tube 303, the output end of the drive motor 5 drives the feeding worm 101 to rotate and transfers the medicine inside the dosing box 4 to the inside of the storage bag 403. After the movable sleeve 411 moves upward, the drive motor 5 stops working. The outer surface of the mixing tank 1 is equipped with a control terminal for controlling the components inside the mixing tank 1 and the start-up of the drive motor 5. Specifically, linear sensors can be various types of linear sensors, including resistive, inductive, Hall element, or photoelectric linear displacement sensors. They are widely used in industrial automation devices for displacement detection and position determination. The relevant technical principles and signal conversion and processing paths are existing mature technologies, and will not be elaborated on here.

[0030] The working principle of this invention is: During operation, wastewater enters the drive housing 106 through the inlet pipe 3. As the wastewater flows into the compression sleeve 202 from the inlet pipe 3, the reduced diameter causes an increase in flow velocity. The high-speed flowing wastewater impacts the impeller 201, causing periodic oscillation at the tail end. During the oscillation of the impeller 201, the drive shaft 203 reciprocates. The drive shaft 203, through the drive block 208, drives the flywheel 209 to reciprocate. During this process, the abutment block 207 on the outer periphery of the flywheel 209 engages with the ratchet ring 206, at which point the drive sleeve 205 achieves unidirectional rotational output. The drive sleeve 205 drives the passive block 302 to rotate. When the passive block 302 rotates, it drives the passive gear 309 group through the drive gear 308, and finally drives the passive gear ring 310 to make the passive cover 305 rotate forward. At this time, the movable sleeve 411 begins to move upward with the rotation of the drive screw 307. The upward movement of the movable sleeve 411 drives the extrusion ring 410 to move. Then, during the upward movement of the extrusion ring 410, it drives the locking buckle 405 to rotate. At this time, the locking buckle 405 no longer locks the sealing plate 404. As the extrusion ring 410 continues to move upward, it begins to extrude the drug storage bladder 403. The space inside the drug storage bladder 403 shrinks and pushes out the drug inside, which then dissolves into the wastewater inside the mixing tank 1. Then, the wastewater and the drug are mixed with the aid of ultrasonic vibration. Subsequently, the electrochemical flocculation module responds in turn to flocculate the impurities in the wastewater. With the continuous injection of wastewater, the liquid inside the mixing tank 1 is in a continuous flow state. At this time, the purified water flows out from the outlet pipe 6. During the upward movement of the compression ring 410, the buffer sleeve 406 pushes the limiting ring 402 and the mating plate 408, causing the sealing block 409 to block the through hole inside the connecting sleeve 401. As the movable sleeve 411 continues to move upward, when the extension plate on the outer surface of the movable sleeve 411 contacts the upper end of the rectangular hole on the outer surface of the stabilizing tube 303, and with the rotation of the drive screw 307, the movable sleeve 411 drives the stabilizing tube 303 to move. During the upward movement of the stabilizing tube 303, the passive plate 306 pulls the passive cover 305 upward. At this time, after the drive screw 307 moves upward, the diamond ring passes through the diamond groove. Correspondingly, the passive toothed ring 310 no longer meshes with the passive gear 309 as the passive cover 305 moves upward. At this time, the drive screw 307 starts to reverse and drives the movable sleeve 411 to move downward. As the movable sleeve 411 moves downward, it drives the compression ring 410 to move. When it passes the locking buckle 405, it drives the locking buckle 405 to reverse, so that it locks the sealing plate 404 again. When the movable sleeve 411 moves to the bottom of the stabilizing tube 303, it drives the stabilizing tube 303 to move downward, so that the passive cover 305 moves downward. At this time, the passive gear ring 310 re-engages with the passive gear 309. At the same time, the output of the drive motor 5 drives the feeding worm gear 101 to rotate, transferring the medicine inside the dosing box 4 to the medicine storage bag 403. Then the drive motor 5 stops working and continues to repeat the above operation.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heavy metal wastewater treatment device for hydrometallurgical processing of molybdenum concentrate, comprising a mixing tank (1), characterized in that: A layered plate (105) is fixedly installed inside the mixing tank (1). An inlet pipe (3) passes through the bottom of the mixing tank (1), and an outlet pipe (6) passes through the top of the mixing tank (1). A screen (103) is detachably installed at the inner end of the mixing tank (1) for filtering flocculated wastewater. A central pipe (104) is fixedly connected to the upper end of the layered plate (105). A dosing device is installed inside the central pipe (104) for adding chemicals to the mixing tank (1). A drive housing (106) is fixedly installed at the bottom end of the layered plate (105). The drive housing (106) is fixedly connected to the water inlet pipe (3). The output end of the drive housing (106) is fixedly connected to the output pipe (107). A drive device is provided between the drive housing (106) and the central pipe (104) to realize intermittent dosing. The inner end of the drive housing (106) is rotatably installed with a blade (201). The blade (201) swings with the water flow of the water inlet pipe (3). The inner end of the water inlet pipe (3) is fixedly installed with a compression sleeve (202). An ultrasonic device is provided inside the mixing tank (1) to assist the mixing of wastewater and reagents through ultrasonic vibration. The drive device includes an isolation sleeve (301), which is fixedly installed at the bottom end of the layered plate (105). The isolation sleeve (301) is located above the drive housing (106). The rotation shaft of the blade (201) is fixedly connected to the drive shaft (203), and one end of the drive shaft (203) away from the blade (201) passes through the inner end of the isolation sleeve (301). The inner end of the isolation sleeve (301) is rotatably installed with a drive sleeve (205), which is located above the drive shaft (203). A flywheel (209) is rotatably mounted on the inner bottom end of the isolation sleeve (301). The flywheel (209) is located inside the drive sleeve (205). A plurality of abutment blocks (207) are rotatably mounted on the outer surface of the flywheel (209). The abutment blocks (207) are arranged in a ring. The abutment blocks (207) and the flywheel (209) are connected by spring pieces. A ratchet ring (206) is fixedly mounted on the inner bottom end of the drive sleeve (205). The end of the abutment block (207) away from the flywheel (209) engages with the ratchet ring (206). The inner end of the central tube (104) is provided with a stabilizing tube (303), the inner end of the stabilizing tube (303) is provided with a driving screw (307), the inner end of the stabilizing tube (303) is slidably installed with a movable sleeve (411), and the movable sleeve (411) is threaded onto the outer surface of the driving screw (307). A passive block (302) is provided on the side of the stabilizing tube (303) near the driving sleeve (205). A passive cover (305) is provided on the end of the passive block (302) near the stabilizing tube (303). The passive cover (305) is fixedly sleeved on the outer surface of the driving screw (307). A compression ring (410) is sleeved on the outer surface of the stabilizing tube (303). When the compression ring (410) moves upward, it squeezes the drug storage bladder (403) to discharge the drug inside. The passive cover (305) is rotatably fitted with a sealing sleeve (304) at one end near the stabilizing tube (303), and the sealing sleeve (304) and the stabilizing tube (303) are fixedly connected by a passive plate (306). When the drive sleeve (205) rotates, it drives the drive screw (307) to rotate through the passive block (302). The dosing device includes a drug storage bladder (403), which is fixedly sleeved on the outer surface of the stabilizing tube (303). The outer surface of the central tube (104) is provided with a discharge port, and the outer surface of the drug storage bladder (403) is provided with a discharge port. The discharge port is connected to the discharge port. Two sealing plates (404) are rotatably installed on the outer surface of the central tube (104). The sealing plates (404) are connected to the central tube (104) by a reset torsion spring.

2. The heavy metal wastewater treatment equipment for hydrometallurgical processing of molybdenum concentrate according to claim 1, characterized in that: A dosing box (4) is fixedly installed at the upper end of the mixing tank (1). A dosing pipe (102) is inserted through the upper inner side of the mixing tank (1). The dosing pipe (102) is located above the central pipe (104) and is fixedly connected to the dosing box (4). A drive motor (5) is fixedly installed at the upper end of the dosing box (4). A feeding worm (101) is inserted through the inner end of the dosing pipe (102) and is fixedly connected to the output shaft of the drive motor (5).

3. The heavy metal wastewater treatment equipment for hydrometallurgical processing of molybdenum concentrate according to claim 2, characterized in that: The outer surface of the stabilizing tube (303) is fitted with a buffer sleeve (406). When the squeezing ring (410) moves upward, it pushes the buffer sleeve (406) to move upward. The outer surface of the stabilizing tube (303) is fitted with a limiting ring (402).

Images