A high-purity quartz sand processing pickling waste liquid recycling device

Abstract

This invention relates to the field of quartz sand processing, and more particularly to a device for recycling pickling wastewater from high-purity quartz sand processing. The device includes a reaction vessel; from left to right, a magnetic separation mechanism, a filtration mechanism, and a dosing mechanism are sequentially arranged on the top of the reaction vessel, all interconnected. The dosing mechanism is connected to the reaction vessel. The magnetic separation mechanism is used to separate magnetic materials from the wastewater. The filtration mechanism has multiple filtration functions and a backwashing anti-clogging function. This invention achieves fully automated and continuous wastewater treatment through the coordinated operation of the magnetic separation mechanism, filtration mechanism, dosing mechanism, and reaction vessel. The magnetic separation mechanism utilizes a mechanical structure with a rotating ring and a convex rod to alternately switch the magnetic plate between the adsorption zone and the discharge zone. Combined with electromagnet striking, this achieves automatic separation and discharge of magnetic impurities, solving the problems of residue buildup and the need for shutdown cleaning in traditional magnetic separation methods.

Description

Technical Field

[0001] This invention relates to the field of quartz sand processing, and more particularly to a device for recycling pickling waste liquid used in the processing of high-purity quartz sand. Background Technology

[0002] In modern high-end manufacturing, high-purity quartz sand is an indispensable key material for the photovoltaic, semiconductor, and fiber optic communication industries, and its quality directly determines the performance and yield of end products. To purify natural quartz ore to electronic or solar-grade standards, acid leaching (acid pickling) is the core process for removing harmful metallic impurities such as iron, aluminum, titanium, and calcium from the crystal lattice surface and inclusions. However, while purifying quartz sand, this process also generates a large amount of complex acidic waste liquid.

[0003] During the purification and reuse of waste acid (e.g., using physical methods such as membrane separation and filtration), fine quartz particles, undissolved silicate colloids, and precipitated fluorosilicate crystals entrained in the pickling waste liquid easily deposit and bridge on the surface of the filter media, causing rapid clogging of the filter screen or membrane pores. This clogging not only significantly reduces filtration efficiency and acid throughput but also frequently leads to production interruptions, increasing maintenance costs for manual cleaning and filter media replacement. Although existing technologies employ simple backwashing or vibrating screen designs, their anti-clogging effect is limited for high-concentration, high-viscosity acidic media, making it difficult to maintain stable operation over long periods.

[0004] Therefore, there is an urgent need to develop a high-purity quartz sand processing acid pickling waste liquid recycling device that has strong working continuity and does not clog. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a recycling device for pickling waste liquid in high-purity quartz sand processing that has strong working continuity and does not cause blockage.

[0006] The technical solution of the present invention is as follows: a recycling device for pickling waste liquid in high-purity quartz sand processing, comprising a reaction vessel, a magnetic separation mechanism, a filtration mechanism, and a dosing mechanism. The magnetic separation mechanism, the filtration mechanism, and the dosing mechanism are arranged sequentially from left to right on the top of the reaction vessel and are interconnected. The dosing mechanism is connected to the reaction vessel. The magnetic separation mechanism is used to separate magnetic materials in the waste liquid. The filtration mechanism has multiple filtration functions and a backwashing anti-clogging function. The dosing mechanism has a mixing function.

[0007] As a further preferred embodiment, the reaction tank includes a reaction vessel, a baffle, a drain pipe, and a connecting structure. The baffle is provided in the middle of the reaction vessel, which divides the reaction vessel into left and right spaces. A drain pipe is installed below the left space of the reaction vessel. The right side of the reaction vessel is connected to a dosing mechanism. The left and right spaces of the reaction vessel are connected by the connecting structure.

[0008] As a further preferred embodiment, the communication structure includes a concave tube, a water pump, and a filter. Concave tubes are provided below the front and rear walls of the reaction vessel. The two ends of the concave tubes are respectively connected to two spaces of the reaction vessel. A water pump is provided on each concave tube, and a filter is detachably provided on each concave tube.

[0009] As a further preferred embodiment, the magnetic separation mechanism includes a support frame, a magnetic separation cylinder, a magnetic material separation structure, and a first slag discharge structure. The support frame is installed on the top left side of the reaction tank, and the magnetic separation cylinder is installed between the support frames. The magnetic material separation structure is provided on the outer surface of the magnetic separation cylinder, and the first slag discharge structure is provided inside the magnetic separation cylinder, extending to the outside of the magnetic separation cylinder.

[0010] As a further preferred embodiment, the magnetic material separation structure includes a rotating ring, guide rods, a magnetic plate, a first spring, a convex rod, a first motor, a first pinion, and a first large gear. Rotating rings are concentrically mounted on the left and right sides of the magnetic separator. Guide rods are symmetrically arranged on the upper and lower parts of the rotating rings. A magnetic plate is slidably connected between the guide rods on the same side. The lower magnetic plate is in contact with the bottom of the magnetic separator. A first spring connects the magnetic plate to the end of the guide rod. Convex rods are provided on both the left and right sides of the top of the magnetic separator, lifting the upper magnetic plate and separating it from the magnetic separator. A first motor is located on the left side of the top of the reaction vessel. A first pinion is connected to the output shaft of the first motor. A first large gear, meshing with the first pinion, is concentrically fixed to the rotating ring on the left side.

[0011] As a further preferred embodiment, the first slag discharge structure includes a slag discharge pipe and an inclined frame. The slag discharge pipe is provided on the right side of the magnetic separator, and an inclined frame communicating with the inner end of the slag discharge pipe is inclinedly provided. The inclined frame is inside the magnetic separator and is located below the upper magnetic plate.

[0012] As a further preferred embodiment, the magnetic separation mechanism also includes a striking structure mounted on a magnetic plate. The striking structure includes an electromagnet, a striking rod, and a second spring. Electromagnets are symmetrically arranged on the magnetic plate, and a row of striking rods is slidably arranged on the magnetic plate. A second spring connects the striking rods to the magnetic plate, and the electromagnets and striking rods partially overlap in the vertical direction.

[0013] As a further preferred embodiment, the filtration mechanism includes a filter container, a filter structure, a second slag discharge structure, and a backwashing structure. The filter container is located on the top of the reaction vessel and is connected to the magnetic separator. The filter structure includes a second motor, a second pinion, filter screens, a feeding ramp, and a second large gear. The second motor is installed on the upper left side of the filter container. The output shaft of the second motor passes through the left wall of the filter container and is connected to the second pinion. Multiple filter screens of different diameters are concentrically mounted inside the filter container, with the mesh size of the filter screens decreasing from the inside to the outside. The outermost filter screen has a second large gear concentrically mounted on its left side that meshes with the second pinion. A feeding ramp is inclined around the inner wall of each filter screen, and the inclination direction of the feeding ramp is the same as the rotation direction of the filter screen.

[0014] As a further preferred embodiment, the second slag discharge structure includes an arc-shaped receiving plate, a hook portion, a receiving pipe, and a discharge pipe. The right wall of the filter container is provided with an arc-shaped receiving plate in the same number as the filter screen cylinders. The arc-shaped receiving plate is located below each filter screen cylinder. Both the front and rear ends of the arc-shaped receiving plate are provided with upwardly curved hook portions. The right side of each hook portion is provided with a receiving pipe. The other end of each receiving pipe is connected to the discharge pipe.

[0015] As a further preferred embodiment, the backwashing structure includes a flushing pipe and an inlet pipe. The number of flushing pipes is the same as that of the filter screen cylinder, and they are arranged above the filter screen cylinder. The outer ends of the flushing pipes are all connected to the inlet pipe.

[0016] As a further preferred embodiment, the dosing mechanism includes a storage cylinder, a dosing pipe, and a mixing inclined plate. The storage cylinder is located on the top right side of the reaction vessel, and a dosing pipe connected to a filter vessel is installed below the storage cylinder. The other end of the dosing pipe is connected to the reaction vessel, and a mixing inclined plate is installed inside the dosing pipe.

[0017] The present invention has the following advantages: the present invention achieves full automation and continuous treatment of waste liquid through the coordinated operation of magnetic separation mechanism, filtration mechanism, dosing mechanism and reaction vessel; The magnetic separation mechanism utilizes a mechanical structure that combines a rotating ring and a convex rod to allow the magnetic plate to alternate between the adsorption zone and the discharge zone. Combined with the striking action of an electromagnet, this achieves the automatic separation and discharge of magnetic impurities, solving the problems of easy residue and the need for shutdown for cleaning in traditional magnetic separation. The filtration mechanism uses a multi-layer concentric rotating filter cylinder with a feeding inclined plate to automatically lift and discharge the filter residue. The backwashing structure and the arc-shaped receiving plate design further ensure filtration efficiency and smooth residue discharge. The dosing mechanism automatically draws in the liquid drug using the Venturi effect generated by fluid acceleration. Combined with the turbulent separation effect of the cross-mixing inclined plate, the waste liquid and the liquid drug are quickly and evenly mixed without the need for additional power to drive the dosing. The reaction vessel features a separation design between the sedimentation tank and the storage tank via a partition and a double-sided connection structure. Combined with an externally removable filter and a backup connecting pipeline, it enables simultaneous sedimentation and reuse. Even if one side of the filter becomes clogged, continuous operation can be maintained by switching the pipeline. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the reaction vessel of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the connected structure of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the magnetic separation mechanism of the present invention.

[0022] Figure 5 This is a cross-sectional view of the magnetic separation mechanism of the present invention.

[0023] Figure 6 This is a cross-sectional view of the magnetic material separation structure and the impact structure of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the filtration mechanism of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the internal structure of the filtration mechanism of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the filter structure of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the second slag discharge structure of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the backwashing structure of the present invention.

[0029] Figure 12 This is a three-dimensional structural diagram of the drug dispensing mechanism of the present invention.

[0030] Figure 13 This is a three-dimensional structural diagram of the mixing inclined plate of the present invention.

[0031] Wherein: 1-Reaction tank, 11-Reaction vessel, 12-Baffle, 13-Drainage pipe, 14-Connecting structure, 141-Concave tube, 142-Water pump, 143-Filter, 2-Magnetic separation mechanism, 21-Support frame, 22-Magnetic separator cylinder, 23-Magnetic material separation structure, 231-Rotating ring, 232-Guide rod, 233-Magnetic plate, 234-First spring, 235-Protruding rod, 236-First motor, 237-First pinion, 238-First gear, 24-First slag discharge structure, 241-Slag discharge pipe, 242-Slanted frame, 25-Actuating structure, 251-Electromagnet 252-Striking rod, 253-Second spring, 3-Filtering mechanism, 31-Filter container, 311-Filter cylinder, 312-Discharge pipe, 32-Filtering structure, 321-Second motor, 322-Second pinion, 323-Filter screen cylinder, 324-Feeding inclined plate, 325-Second large gear, 33-Second slag discharge structure, 331-Arc-shaped receiving plate, 332-Hook part, 333-Receiving pipe, 334-Discharge pipe, 34-Backwashing structure, 341-Flushing pipe, 342-Liquid inlet pipe, 4-Dosing mechanism, 41-Storage cylinder, 42-Dosing pipe, 43-Mixing inclined plate. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0033] Example: A device for recycling pickling waste liquid from high-purity quartz sand processing, such as... Figures 1-13 As shown, the system includes a reaction vessel 11, a magnetic separation mechanism 2, a filtration mechanism 3, and a dosing mechanism 4. From left to right, the top of the reaction vessel 11 is equipped with interconnected magnetic separation mechanism 2, filtration mechanism 3, and dosing mechanism 4. The dosing mechanism 4 is connected to the reaction vessel 11. Waste liquid enters from the left end of the magnetic separation mechanism 2. The magnetic separation mechanism 2 separates magnetic materials from the waste liquid and collects and discharges the separated magnetic materials. The waste liquid after magnetic separation enters the filtration mechanism 3 from the right side of the magnetic separation mechanism 2. The filtration mechanism 3 performs multiple filtrations on the waste liquid, and the filtered impurities are also collected and discharged. The filtration mechanism 3 also has a backwashing function to prevent clogging. After multiple filtrations, the waste liquid enters the dosing mechanism 4 for dosing and mixing, and then enters the reaction tank 1 for sedimentation. The settled liquid can be discharged from the left side of the reaction tank 1 for reuse.

[0034] A recycling device for pickling wastewater from high-purity quartz sand processing: The pickling wastewater generated from high-purity quartz sand processing first enters from the left end of the magnetic separation mechanism 2, where the magnetic substances separated by the magnetic separation mechanism 2 are collected and discharged. The demagnetized wastewater flows from the right side of the magnetic separation mechanism 2 into the filtration mechanism 3, where it undergoes physical filtration through multi-stage filter screens to trap suspended particles, precipitates, and colloidal impurities. The filtered impurities are also collected and discharged. Simultaneously, a backwashing function is activated, using reverse pulsating water or airflow to periodically rinse the filter screen surface, effectively preventing the filter media from accumulating due to impurities. The blockage ensures the stability of filtration efficiency. After multiple filtration and purification, the waste liquid continues to flow to the right into the dosing mechanism 4, where the corresponding reagents are automatically added and thoroughly mixed with the waste liquid to produce a chemical reaction that adjusts the acidity, removes specific ions, or promotes the precipitation of impurities. The waste liquid after the dosing reaction is completed then flows into the reaction container 11 below for settling, allowing the generated insoluble substances to settle to the bottom. The clear regenerated acid liquid on the upper layer is discharged from the outlet on the left side of the reaction tank 1 and re-transported to the pickling process for recycling, thereby achieving efficient purification and closed-loop circulation of pickling waste liquid.

[0035] like Figure 1 and Figure 2 As shown, the reaction tank 1 includes a reaction vessel 11, a partition 12, a drain pipe 13, and a connecting structure 14. The partition 12 is located in the middle of the reaction vessel 11, dividing it into two spaces: a right space (sedimentation tank) and a left space (storage tank). A drain pipe 13 is installed below the left space of the reaction vessel 11 to drain the liquid from the storage tank. The right sedimentation tank of the reaction vessel 11 is connected to the dosing mechanism 4. The sedimentation tank and the storage tank are connected by the connecting structure 14, which has two sections located on the front and rear walls of the reaction vessel 11. The connecting structure 14 includes a concave pipe 141, a water pump 142, and a filter 143. The front of the reaction vessel 11... Concave tubes 141 are provided below both the wall and the rear wall. The concave tubes 141 are located outside the reaction vessel 11, and both ends of the concave tubes 141 are connected to two spaces in the reaction vessel 11. A water pump 142 is provided on each concave tube 141 to pump the liquid in the sedimentation tank into the storage tank. A filter 143 is detachably installed on each concave tube 141 to filter the liquid in the sedimentation tank. Since the filter 143 is located outside the reaction vessel 11 and has a connecting structure 14 on both sides, when the filter 143 is blocked, the connecting structure 14 on the other side can take over the work. At this time, the blocked filter 143 can be removed for cleaning without affecting the operation.

[0036] Reaction tank 1: After the waste liquid is mixed and reacted by the dosing mechanism 4, it flows into the sedimentation tank on the right side of the reaction vessel 11 for settling and stratification. The density difference causes the heavy metal precipitate to settle to the bottom. At this time, the water pump 142 installed on the concave pipe 141 on the outer side of the front and rear walls of the reaction vessel 11 is started. The clear liquid on the upper layer of the sedimentation tank is drawn into the storage tank on the left side through the concave pipe 141 via the detachable filter 143. The filter 143 effectively intercepts the precipitate to ensure the purity of the reused acid liquid. When the filter 143 on one side becomes blocked due to the accumulation of impurities, the water pump 142 on that side can be turned off and the other side can be switched to the connecting structure 14 to continue working, thereby ensuring the continuous operation of the system. At the same time, the blocked filter 143 can be disassembled and cleaned during the downtime, and then reinstalled as a backup, realizing uninterrupted operation and efficient maintenance of the waste liquid recycling process.

[0037] like Figures 4-6As shown, the magnetic separation mechanism 2 includes a support frame 21, a magnetic separator 22, a magnetic material separation structure 23, and a first slag discharge structure 24. The support frame 21 is installed on the top left side of the reaction tank 1. The magnetic separator 22 is fixedly installed between the support frames 21 by bolts. The magnetic separator 22 has a liquid inlet on the left side, which is a cone shape that tapers towards the middle of the left side. The magnetic separator 22 has a liquid outlet on the right side, which is a cone shape that tapers towards the lower right side. The purpose of this design is to reduce the flow rate when the waste liquid enters, which facilitates magnetic separation, and at the same time, it can also ensure the discharge of waste liquid inside the magnetic separator 22. The magnetic material separation structure 23 is provided on the outer surface of the magnetic separator 22, and the first slag discharge structure 24 is provided inside the magnetic separator 22. The slag structure 24 extends outside the magnetic separator 22. The magnetic material separation structure 23 adsorbs and places the magnetic material inside the first slag discharge structure 24, and discharges it outside the equipment through the first slag discharge structure 24. The magnetic material separation structure 23 includes a rotating ring 231, a guide rod 232, a magnetic plate 233, a first spring 234, a protruding rod 235, a first motor 236, a first pinion 237, and a first gear 238. The left and right sides of the magnetic separator 22 are concentrically mounted with rotating rings 231. The upper and lower parts of the rotating rings 231 are symmetrically and vertically arranged with guide rods 232. Magnetic plates 233 are slidably connected between the guide rods 232 on the same side. The magnetic plates 233 are T-shaped, and the lower magnetic plate 233 is connected to... The bottom of the magnetic separator 22 is fitted together, allowing the magnetic material in the waste liquid to be adsorbed onto the bottom of the magnetic separator 22. A first spring 234 connects the magnetic plate 233 to the end of the guide rod 232. Protruding rods 235 are provided on both the left and right sides of the top of the magnetic separator 22. When the magnetic plate 233 is at its upper and lower sides, the protruding rods 235 lift the horizontal part of the magnetic plate 233, causing the upper magnetic plate 233 to separate from the magnetic separator 22. The magnetic material adsorbed on the inner wall of the magnetic separator 22 falls into the first slag discharge structure 24 due to the loss of magnetic attraction. A first motor 236 is provided on the top left side of the reaction vessel 11. A first pinion 237 is connected to the output shaft of the first motor 236. A concentric ring 231 is fixed to the left rotating ring 231. The first large gear 238 meshes with the first small gear 237. Through the meshing of the first small gear 237 and the first large gear 238, the power of the first motor 236 is transmitted to the rotating ring 231, so that the magnetic plate 233 can rotate and interchange its up and down positions. The first slag discharge structure 24 includes a slag discharge pipe 241 and an inclined frame 242. The slag discharge pipe 241 is provided on the right side of the magnetic separator 22. The inclined frame 242 is provided at the inner end of the slag discharge pipe 241 with the left side higher than the right side. The inclined frame 242 is inside the magnetic separator 22 and is located below the upper magnetic plate 233. Because the slag discharge pipe 241 is installed with the left side higher than the right side, the collected magnetic material can be easily discharged from the inclined frame 242 and the slag discharge pipe 241.The magnetic separation mechanism 2 also includes a striking structure 25 mounted on the magnetic plate 233. The striking structure 25 includes an electromagnet 251, striking rods 252, and a second spring 253. Electromagnets 251 are symmetrically arranged on the magnetic plate 233, and a row of striking rods 252 is slidably arranged on the magnetic plate 233. The second spring 253 connects the striking rods 252 to the magnetic plate 233. The electromagnets 251 and striking rods 252 partially overlap in the vertical direction. By controlling the on / off state of the electromagnets 251 and the cooperation of the second spring 253, the striking rods 252 can strike the magnetic separator 22, thereby preventing the residue of magnetic materials.

[0038] Magnetic separation mechanism 2: High-purity quartz sand pickling waste liquid enters the magnetic separation cylinder 22 through the conical inlet and flows along the cylinder wall at a low flow rate. At this time, the lower magnetic plate 233 is in close contact with the inner wall of the magnetic separation cylinder 22, and uses magnetic force to adsorb magnetic impurities in the waste liquid and rotates with the rotating ring 231. When the magnetic plate 233 rotates to the upper position, the protruding rod 235 pushes up its horizontal part to separate the magnetic plate 233 from the cylinder wall, the magnetic force disappears, and the adsorbed magnetic material falls into the lower inclined frame 242 under the action of gravity and is discharged through the inclined frame 242 and the slag discharge pipe 241. At the same time, the magnetic plate 233, which was originally located at the upper position, rotates to the lower position with the rotating ring 231 to take over the adsorption work and ensure that the magnetic separation process is continuous. The rotating ring 231 is driven by the first motor 236 through gear transmission to realize the alternating switching of the position of the magnetic plate 233. In addition, when collecting magnetic impurities, the electromagnet 251 periodically switches on and off in conjunction with the second spring 253 to drive the striking rod 252 to move up and down, knocking and vibrating the upper part of the outer wall of the magnetic separator 22 to prevent impurities from remaining, ensuring the cleanliness of the surface of the magnetic separator 22 and the magnetic separation efficiency, and realizing the continuous separation and automatic cleaning of magnetic impurities in the waste liquid.

[0039] like Figures 7-11As shown, the filtration mechanism 3 includes a filter container 31, a filter structure 32, a second slag discharge structure 33, and a backwashing structure 34. The filter container 31 is located on the top of the reaction vessel 11. The filter container 31 consists of a filter cylinder 311 and a discharge pipe 312. The discharge pipe 312 is installed below the right wall of the filter cylinder 311. The filter cylinder 311 is connected to the magnetic separator 22. The filter structure 32 includes a second motor 321, a second pinion 322, a filter screen cylinder 323, a feeding inclined plate 324, and a second large gear 325. The second motor 321 is installed on the upper left side of the filter cylinder 311. The output shaft of the second motor 321 passes through the left wall of the filter cylinder 311 and is connected to... The second pinion 322 and multiple filter cylinders 323 of different diameters are concentrically mounted inside the filter cylinder 311. The mesh size of the filter cylinders 323 decreases from the inside to the outside, thereby achieving layer-by-layer filtration of waste liquid, sharing the filtration burden, and reducing the risk of filter cylinder 323 clogging. The outermost filter cylinder 323 is concentrically mounted on the left side with a second large gear 325 that meshes with the second pinion 322. The ends of each filter cylinder 323 are connected by a connecting plate, allowing multiple filter cylinders 323 to rotate synchronously. The inner wall of each filter cylinder 323 is inclined with a ring of feeding inclined plates 324. The inclination direction of the feeding inclined plates 324 is the same as that of the filter cylinder. The screen cylinders 323 rotate in the same direction, and the feeding inclined plate 324 can better convey the filtered impurities upwards; the second slag discharge structure 33 includes an arc-shaped receiving plate 331, a hook part 332, a receiving pipe 333, and a discharge pipe 334. The right wall of the filter cylinder 311 is provided with the same number of arc-shaped receiving plates 331 as the filter screen cylinders 323. The arc-shaped receiving plates 331 are below each filter screen cylinder 323. Both the front and rear ends of the arc-shaped receiving plates 331 are provided with upwardly curved hook parts 332. The right side of each hook part 332 is provided with a receiving pipe 333. The other end of the receiving pipe 333 is connected to the discharge pipe 334. The curved part of the arc-shaped receiving plate 331... The upward-facing, arc-shaped receiving plate 331 is tilted with the left side higher than the right side, allowing impurities falling from the filter cylinder 323 to slide down from both the front and rear sides into the hook part 332, and then through the receiving pipe 333 into the discharge pipe 334 for discharge. The backwashing structure 34 includes a flushing pipe 341 and an inlet pipe 342. The number of flushing pipes 341 is the same as that of the filter cylinder 323, and they are located above the filter cylinder 323. The outer ends of the flushing pipes 341 are connected to the inlet pipe 342. The flushing liquid is flushed onto the filter cylinder 323 through the flushing pipes 341, which can wash off the impurities attached to the filter cylinder 323 and further prevent the filter cylinder 323 from clogging.

[0040] Filtration Mechanism 3: After the pickling waste liquid flows into the filter cylinder 311 from the magnetic separator 22, the second motor 321 meshes with the second pinion 322 and the second large gear 325 to drive the outermost filter cylinder 323 to rotate. This rotation, via a connecting plate, drives the internal multi-layer filter cylinders 323 to rotate synchronously, achieving multi-stage, layer-by-layer filtration of the waste liquid from the inside out. Impurities of different particle sizes are intercepted by filter screens of corresponding pore sizes. During rotation, the inclined feeding plates 324 (with the inclination direction consistent with the rotation direction) on the inner walls of each filter cylinder 323 intercept and lift the filter residue upwards, preventing it from falling downwards during transport. When the filter residue rotates with the filter cylinder to the upper position... During this process, under the action of gravity and the high-pressure flushing liquid sprayed by the backwashing structure 34, impurities fall off the screen and slide down to the corresponding arc-shaped receiving plate 331. The arc-shaped receiving plate 331 is inclined from left to right and has upward hooks 332 at both ends, which can guide the impurities to slide to both sides into the receiving pipe 333 and finally flow into the discharge pipe 334 for discharge. The clarified liquid after multi-stage filtration is discharged to the next process through the discharge pipe 312 at the lower right of the filter cylinder 311. The synchronously rotating multi-layer filter screen and the feeding inclined plate 324 work together to significantly improve the solid-liquid separation efficiency and the smoothness of slag discharge. The backwashing structure 34 effectively prevents the filter screen from clogging and ensures the continuous and stable operation of the system.

[0041] like Figure 10 and Figure 11 As shown, the dosing mechanism 4 includes a storage cylinder 41, a dosing pipe 42, and a mixing inclined plate 43. The storage cylinder 41 is located on the top right side of the reaction vessel 11. The dosing pipe 42, which is connected to the discharge pipe 312, is installed below the storage cylinder 41. The other end of the dosing pipe 42 is connected to the reaction vessel 11. A row of mixing inclined plates 43 is installed inside the dosing pipe 42. Each mixing inclined plate 43 is installed crosswise, so that the flowing liquid can be continuously divided, thereby improving the mixing of waste liquid and drug liquid. The right end of the discharge pipe 312 is recessed inward, so that the filtered waste liquid can enter the dosing pipe 42 more quickly and draw the drug liquid in the storage cylinder 41 into the dosing pipe 42. Then, it passes through the mixing inclined plate 43, so that the waste liquid and drug liquid can be quickly mixed.

[0042] Dosing mechanism 4: The filtered pickling waste liquid is accelerated into the dosing pipe 42 through the discharge pipe 312 that is recessed inward at the right end. The liquid in the storage cylinder 41 is automatically drawn into the dosing pipe 42 by the Venturi effect generated by the fluid. Then, the mixed fluid impacts a row of mixing inclined plates 43 arranged in a cross pattern inside the dosing pipe 42. Through the repeated division and guiding effect of the inclined plates on the fluid, the waste liquid and the liquid are quickly and thoroughly mixed in a turbulent state, and finally discharged into the reaction vessel 11 for subsequent precipitation treatment.

[0043] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A device for recycling pickling waste liquid from high-purity quartz sand processing, characterized in that: The system includes a reaction vessel (11), a magnetic separation mechanism (2), a filtration mechanism (3), and a dosing mechanism (4). The top of the reaction vessel (11) is provided with interconnected magnetic separation mechanism (2), filtration mechanism (3), and dosing mechanism (4) from left to right. The dosing mechanism (4) is connected to the reaction vessel (11). The magnetic separation mechanism (2) is used to separate magnetic materials in the waste liquid. The filtration mechanism (3) has multiple filtration functions and backwashing anti-clogging functions. The dosing mechanism (4) has a mixing function. The reaction tank (1) includes a reaction vessel (11), a partition (12), a drain pipe (13), and a connecting structure (14). The partition (12) is provided in the middle of the reaction vessel (11), which divides the reaction vessel (11) into two spaces, left and right. The drain pipe (13) is installed below the left space of the reaction vessel (11), and the right side of the reaction vessel (11) is connected to the dosing mechanism (4). The left and right spaces of the reaction vessel (11) are connected through the connecting structure (14). The connecting structure (14) includes a concave tube (141), a water pump (142), and a filter (143). The concave tube (141) is provided below the front and rear walls of the reaction vessel (11). The two ends of the concave tube (141) are respectively connected to the two spaces of the reaction vessel (11). The water pump (142) is provided on each of the concave tubes (141), and the filter (143) is detachably provided on each of the concave tubes (141). The magnetic separation mechanism (2) includes a support frame (21), a magnetic separation cylinder (22), a magnetic material separation structure (23), and a first slag discharge structure (24). The support frame (21) is installed on the top left side of the reaction tank (1). The magnetic separation cylinder (22) is installed between the support frames (21). The magnetic material separation structure (23) is provided on the outer surface of the magnetic separation cylinder (22). The first slag discharge structure (24) is provided inside the magnetic separation cylinder (22) and extends to the outside of the magnetic separation cylinder (22). The magnetic material separation structure (23) includes a rotating ring (231), a guide rod (232), a magnetic plate (233), a first spring (234), a protruding rod (235), a first motor (236), a first pinion (237), and a first large gear (238). The rotating ring (231) is concentrically mounted on both the left and right sides of the magnetic separator (22). The guide rod (232) is symmetrically arranged on the upper and lower parts of the rotating ring (231). A magnetic plate (233) is slidably connected between the guide rods (232) on the same side. The lower magnetic plate (233) is in contact with the bottom of the magnetic separator (22). A first spring (234) is connected between the magnetic plate (233) and the end of the guide rod (232). A protruding rod (235) is provided on both the left and right sides of the top of the magnetic separator (22). The protruding rod (235) lifts up the upper magnetic plate (233), so that the upper magnetic plate (233) is separated from the magnetic separator (22). A first motor (236) is provided on the left side of the top of the reaction vessel (11). A first small gear (237) is connected to the output shaft of the first motor (236). A first large gear (238) that meshes with the first small gear (237) is concentrically fixed on the rotating ring (231) on the left side.

2. The apparatus for recycling the pickling waste liquid for high purity quartz sand processing according to claim 1, characterized in that: The first slag discharge structure (24) includes a slag discharge pipe (241) and an inclined frame (242). The slag discharge pipe (241) is provided on the right side of the magnetic separator (22). An inclined frame (242) is inclinedly provided at the inner end of the slag discharge pipe (241) and communicates with it. The inclined frame (242) is inside the magnetic separator (22) and is located below the upper magnetic plate (233).

3. The acid washing waste liquid recycling device for high-purity quartz sand processing as described in claim 2, characterized in that: The magnetic separation mechanism (2) further includes a striking structure (25) mounted on a magnetic plate (233). The striking structure (25) includes an electromagnet (251), a striking rod (252), and a second spring (253). Electromagnets (251) are symmetrically arranged on the magnetic plate (233). A row of striking rods (252) is slidably arranged on the magnetic plate (233). A second spring (253) is connected between the striking rod (252) and the magnetic plate (233). The electromagnets (251) and the striking rods (252) partially overlap in the vertical direction.

4. The acid pickling waste liquid recycling device for high-purity quartz sand processing as described in claim 3, characterized in that: The filtration mechanism (3) includes a filter container (31), a filter structure (32), a second slag discharge structure (33), and a backwashing structure (34). The filter container (31) is installed on the top of the reaction vessel (11). The filter container (31) is connected to the magnetic separator (22). The filter structure (32) includes a second motor (321), a second pinion (322), a filter screen (323), a feeding inclined plate (324), and a second large gear (325). The second motor (321) is installed on the upper left side of the filter container (31). The output shaft passes through the left wall of the filter container (31) and is connected to a second small gear (322). Multiple filter cylinders (323) of different diameters are installed concentrically inside the filter container (31). The size of the holes in the filter cylinders (323) decreases from the inside to the outside. The outermost filter cylinder (323) is concentrically installed on the left side with a second large gear (325) that meshes with the second small gear (322). The inner wall of each filter cylinder (323) is inclined with a ring of feeding inclined plates (324). The inclination direction of the feeding inclined plates (324) is the same as the rotation direction of the filter cylinders (323).

5. The acid pickling waste liquid recycling device for high-purity quartz sand processing as described in claim 4, characterized in that: The second slag discharge structure (33) includes an arc-shaped receiving plate (331), a hook part (332), a receiving pipe (333), and a discharge pipe (334). The right wall of the filter container (31) is provided with an arc-shaped receiving plate (331) in the same number as the filter screen cylinder (323). The arc-shaped receiving plate (331) is located below each filter screen cylinder (323). Both the front and rear ends of the arc-shaped receiving plate (331) are provided with upwardly curved hook parts (332). The right side of each hook part (332) is provided with a receiving pipe (333). The other end of the receiving pipe (333) is connected to the discharge pipe (334).

6. The acid pickling waste liquid recycling device for high-purity quartz sand processing as described in claim 5, characterized in that: The backwashing structure (34) includes a flushing pipe (341) and an inlet pipe (342). The number of flushing pipes (341) is the same as that of the filter screen cylinder (323), and they are located above the filter screen cylinder (323). The outer ends of the flushing pipes (341) are connected to the inlet pipe (342).

7. The acid pickling waste liquid recycling device for high-purity quartz sand processing as described in claim 6, characterized in that: The dosing mechanism (4) includes a storage cylinder (41), a dosing pipe (42), and a mixing inclined plate (43). The storage cylinder (41) is provided on the top right side of the reaction vessel (11). The dosing pipe (42) connected to the filter vessel (31) is installed below the storage cylinder (41). The other end of the dosing pipe (42) is connected to the reaction vessel (11). The mixing inclined plate (43) is provided inside the dosing pipe (42).

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