Multistage settling device for cleaning waste water of high-purity quartz sand

Abstract

The application relates to the technical field of wastewater treatment, in particular to a multi-stage sedimentation treatment device for high-purity quartz sand cleaning wastewater, which comprises a first-stage sedimentation cylinder and a third-stage filter water storage bucket connected through a second-stage inclined pipe filter cylinder, a drainage mechanism is slidably arranged in the first-stage sedimentation cylinder, one end of a threaded connector is threadedly connected with the bottom of the second-stage inclined pipe filter cylinder, a drainage filter screen is arranged at the other end of the threaded connector, modified lightweight ceramic particles are filled in the second-stage inclined pipe filter cylinder, and an agitating rod is rotatably connected with the threaded connector through a bearing. The device adopts a vertical three-stage gravity flow layout, is energy-saving and land-saving, and is structurally stable; the static sedimentation is changed into forced filtration through a water pushing piston, active pressurized filtration is realized, the solid-liquid separation efficiency is greatly improved, a treatment process forms a gradient chain of 'coarse filtration-adsorption-cleaning', pollutants are gradedly intercepted, the service life of the filler is prolonged, all the threaded quick-release structures can be regularly disassembled, cleaned or replaced, and maintenance is convenient.

Description

Technical Field

[0001] This invention relates to a sedimentation treatment device, and more particularly to a multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater, belonging to the field of wastewater treatment technology. Background Technology

[0002] High-purity quartz sand is a core raw material for strategic emerging industries such as photovoltaics, semiconductors, and optical fiber communication. Its purity requirements are extremely stringent. During the purification and processing of quartz sand, processes such as acid washing, flotation, and magnetic separation generate a large amount of cleaning wastewater containing suspended solids, residual reagents, and iron pollutants. This type of wastewater is characterized by high turbidity, wide distribution of solid particles, and difficulty in removing iron impurities. If not treated properly, it will not only waste water resources but may also cause environmental pollution.

[0003] Currently, the treatment of quartz sand washing wastewater mostly adopts traditional natural sedimentation tanks or single-stage filtration. However, traditional sedimentation relies on static gravity separation, which has a long treatment cycle and low efficiency. Single-stage filtration is prone to rapid clogging of filter media due to high concentrations of suspended solids. Frequent replacement of filter media significantly increases operation and maintenance costs and manpower. Existing devices generally have problems such as dispersed structure, inconvenient disassembly and maintenance, and inability to self-clean online, making it difficult to meet the comprehensive requirements of continuous production for the efficiency, stability, and ease of maintenance of treatment equipment.

[0004] Therefore, it is urgent to improve the treatment equipment for quartz sand washing wastewater in order to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater. This device adopts a vertical three-stage gravity flow layout, which is energy-saving, space-saving, and structurally stable. By using a pusher piston, static sedimentation is transformed into forced filtration, which actively pressurizes the filtration process, greatly improving the solid-liquid separation efficiency. The treatment process forms a gradient chain of "coarse filtration-adsorption-cleaning", which intercepts pollutants in stages, extends the life of the packing material, and the fully threaded quick-release structure can be disassembled, cleaned, or replaced regularly, making maintenance convenient.

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include: A multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater includes a primary sedimentation cylinder and a tertiary filtration storage tank connected by a secondary inclined tube filter cylinder. The primary sedimentation cylinder is located above the secondary inclined tube filter cylinder, and the tertiary filtration storage tank is located below the secondary inclined tube filter cylinder. The bottom of the primary sedimentation cylinder and the tertiary filtration storage tank are fixedly connected to a support mechanism. The primary settling cylinder is equipped with a drainage mechanism that slides inside. The drainage mechanism is used to push the sewage upward. The upper end of the secondary inclined tube filter cylinder is threadedly connected to the primary settling cylinder through an inclined tube inlet connector. The lower end of the secondary inclined tube filter cylinder is connected to the tertiary filter storage tank through a threaded connector. An inclined tube inlet filter screen is fixedly installed at the port of the inclined tube inlet connector. One end of the threaded connector is threadedly connected to the bottom of the secondary inclined tube filter cylinder. The other end of the threaded connector is fixedly installed with a drainage filter screen and threadedly connected to the tertiary filter storage tank. The interior of the secondary inclined tube filter cylinder is filled with modified lightweight ceramic particles. The threaded connector is rotatably connected to an agitator via a bearing. One end of the agitator is equipped with an impeller, which is located inside the threaded connector. The other end of the agitator is equipped with multiple stirring teeth, which are located inside the secondary inclined tube filter cylinder, for stirring the modified lightweight ceramic particles.

[0007] Preferably, an overflow connector is connected to one side of the upper port of the primary settling cylinder, the overflow connector is connected to the interior of the primary settling cylinder, and the inclined tube inlet connector is connected to the overflow connector; A water storage connector is connected to one side of the upper port of the three-stage filtration water storage tank, and the threaded connector is connected to the water storage connector.

[0008] Preferably, the outer surface of the secondary inclined tube filter cylinder is fixedly provided with an anti-slip groove, the outer surface thread specifications of the inclined tube water inlet connector and the threaded connector are the same, and a connector handle is fixedly provided in the middle of the outer surface of the threaded connector, so that the secondary inclined tube filter cylinder is engaged with the overflow connector and the water storage connector respectively, for the purpose of achieving synchronous movement.

[0009] Preferably, the inclination angle of the secondary inclined tube filter cylinder is in the range of 30°-45°.

[0010] Preferably, the drainage mechanism includes a water-pushing piston and an electric telescopic rod. The electric telescopic rod is connected to the support mechanism and is used to vertically push the water-pushing piston. A motor fixing block is fixedly installed at the output end of the electric telescopic rod, and the motor fixing block is fixedly connected to the bottom side of the water-pushing piston. Preferably, a stirring motor is fixedly installed inside the motor fixing block, and a stirring shaft is installed at the output end of the stirring motor. The stirring shaft passes through the water-pushing piston and is rotatably connected to the water-pushing piston. A stirring blade is fixedly mounted on the stirring shaft. The stirring blade is rotatably mounted inside the first-stage settling cylinder. A neodymium magnet is fixedly mounted on the stirring blade.

[0011] Preferably, the bottom of the three-stage filtration water storage tank is connected to a backwash water pump via a water pump inlet pipe, and the backwash water pump is connected to the water storage connector via a water pump outlet pipe. An electromagnetic valve is installed between the water pump drain pipe and the three-stage filtration water storage tank, and the electromagnetic valve is fixedly installed on the water storage connector.

[0012] Preferably, a plurality of support blocks are fixedly provided on the inner side of the three-stage filtration water storage tank, a filter plate is placed on the support blocks, the water storage connector is located above the filter plate, and a water storage drain pipe is connected to the bottom of the filter plate on the three-stage filtration water storage tank.

[0013] Preferably, a fine filter screen is fixedly disposed on the filter disc, and a filter disc handle is fixedly disposed in the middle of the fine filter screen.

[0014] Preferably, the support mechanism includes a settling support frame and a ladder. A water pump support plate and a telescopic rod support plate are fixedly installed on the settling support frame. The backwash water pump is fixedly installed on the water pump support plate, and the drainage mechanism is fixedly installed on the telescopic rod support plate.

[0015] This invention has at least the following beneficial effects: 1. This device adopts a vertical three-stage gravity flow layout, which is energy-saving, space-saving, and structurally stable. By using a water-pushing piston to change static sedimentation into forced filtration and active pressure filtration, the solid-liquid separation efficiency is greatly improved. The treatment process forms a gradient chain of "coarse filtration-adsorption-cleaning", which intercepts pollutants in stages and extends the life of the packing. The fully threaded quick-release structure can be disassembled, cleaned, or replaced regularly, making maintenance convenient.

[0016] 2. The device also features magnetic separation and iron removal functions. Neodymium magnets are installed on the stirring blades to adsorb iron impurities, and an online backwashing system achieves self-cleaning through a backwashing water pump and solenoid valve, significantly enhancing its effectiveness in treating high-purity quartz sand wastewater. In addition, the fully threaded quick-release structure of the inclined tube connector, threaded connector, removable filter disc, and anti-slip groove design make maintenance and replacement extremely convenient. The steps and functional support plates ensure operational safety and equipment stability. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the two-stage inclined tube filter cylinder of the present invention; Figure 4 The present invention relates to a two-stage inclined tube filter cylinder structure. Figure 1 ; Figure 5 The present invention relates to a two-stage inclined tube filter cylinder structure. Figure 2 ; Figure 6 This is a structural diagram of the primary settling cylinder of the present invention; Figure 7 This is a structural diagram of the drainage mechanism of the present invention; Figure 8 This is a structural diagram of the three-stage filtration water storage tank of the present invention; Figure 9 This is a structural diagram of the filter disc of the present invention.

[0018] In the diagram, 1. Primary settling tank; 101. Overflow connector; 2. Secondary inclined tube filter; 201. Inclined tube inlet connector; 2011. Inclined tube inlet filter screen; 2012. Upper compaction baffle; 2013. Upper barrier hole; 202. Anti-slip groove; 3. Tertiary filter water storage tank; 301. Water storage connector; 302. Support block; 303. Water storage drain pipe; 4. Drainage mechanism; 401. Push piston; 402. Electric telescopic rod; 4021. Motor fixing block; 403. Agitator motor; 4031. Agitator shaft; 4032. Agitator blades; 403... 3. Neodymium magnet; 5. Backwash water pump; 501. Pump inlet pipe; 502. Pump drain pipe; 6. Stirring rod; 601. Impeller; 602. Stirring teeth; 7. Filter disc; 701. Fine filter screen; 702. Filter disc handle; 8. Threaded connector; 801. Drainage filter screen; 802. Lower compaction baffle; 8021. Lower barrier hole; 803. Connector handle; 9. Support mechanism; 901. Settlement support frame; 9011. Pump support plate; 9012. Telescopic rod support plate; 902. Step ladder; 10. Modified lightweight ceramic particles; 11. Solenoid valve. Detailed Implementation

[0019] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] like Figures 1-9As shown, the high-purity quartz sand washing wastewater multi-stage sedimentation treatment device provided in this embodiment includes a primary sedimentation cylinder 1 and a tertiary filtration storage tank 3 connected by a secondary inclined tube filter cylinder 2. The primary sedimentation cylinder 1 is located above the secondary inclined tube filter cylinder 2, and the tertiary filtration storage tank 3 is located below the secondary inclined tube filter cylinder 2. By placing the primary sedimentation cylinder 1 at the top and the tertiary filtration storage tank 3 at the bottom, the wastewater naturally gains gravitational potential energy when flowing between the stages using the height difference, reducing additional pumping energy consumption. The vertically arranged three-stage structure saves a significant amount of floor space compared to horizontal series connection, making it easy to centrally install in industrial sites. The bottom of the primary sedimentation cylinder 1 and the tertiary filtration storage tank 3 are fixedly connected to a support mechanism 9. The bottom of the primary sedimentation cylinder 1 and the tertiary filtration storage tank 3 are jointly fixed to the support mechanism 9, ensuring the structural stability of the entire vertical system and preventing leakage due to uneven stress at the connection points caused by vibration or full load. The first-stage sedimentation cylinder 1 has a sliding drainage mechanism 4 inside, which is used to push the sewage upward. The upper end of the second-stage inclined tube filter cylinder 2 is threadedly connected to the first-stage sedimentation cylinder 1 through the inclined tube water inlet connector 201, and the lower end of the second-stage inclined tube filter cylinder 2 is connected to the third-stage filter water storage tank 3 through the threaded connector 8. Traditional sedimentation relies on static settling, which is inefficient. Here, the sewage is pushed upward by the sliding drainage mechanism 4, which also facilitates the cleaning of impurities deposited on the drainage mechanism 4. Static settling is transformed into active pressure filtration, which significantly improves the solid-liquid separation speed and water output. Of course, there is a sealing ring between the water pusher piston 401 and the inner wall of the first-stage sedimentation cylinder 1, which can effectively apply pressure and prevent sewage from short-circuiting and leaking from the piston. An inclined tube inlet filter screen 2011 is fixedly installed at the port of the inclined tube inlet connector 201. Before entering the inclined tube, the sewage is first coarsely filtered by the inclined tube inlet filter screen 2011 to intercept large suspended particles. One end of the threaded connector 8 is threadedly connected to the bottom of the secondary inclined tube filter cylinder 2. The other end of the threaded connector 8 is fixedly installed with a drainage filter screen 801 and threadedly connected to the tertiary filter storage tank 3. The interior of the secondary inclined tube filter cylinder 2 is filled with modified lightweight ceramic particles 10. When the water flows through the modified lightweight ceramic particles 10, secondary adsorption filtration is performed, which greatly extends the service life of each level of packing material and avoids rapid clogging of single-stage filtration. Modified lightweight ceramic particles are lightweight, porous, and have a large specific surface area. They can both physically intercept water and have the ability to form biofilms, resulting in high-quality effluent. In addition, both the inclined tube inlet connector 201 and the threaded connector 8 are threaded connections, and a filter screen is fixed at the port. The secondary inclined tube filter cylinder 2 can be directly disassembled, which means that these two filter screens and the modified lightweight ceramic particles 10 inside can be disassembled, cleaned or replaced regularly, making maintenance convenient. Furthermore, the secondary inclined tube filter cartridge 2 can be cleaned by backwashing with the backwash water pump 5 without disassembling it. The bottom of the tertiary filter storage tank 3 is connected to the backwash water pump 5 via the water pump inlet pipe 501. The backwash water pump 5 is connected to the storage connector 301 via the water pump drain pipe 502. A solenoid valve 11 is installed between the water pump drain pipe 502 and the tertiary filter storage tank 3. The solenoid valve 11 is fixedly installed on the storage connector 301. The valve is open during normal filtration and closed during backwashing. Water circuit switching can be achieved through simple electrical control, with a high degree of automation. The threaded connector 8 is rotatably connected to the stirring rod 6 via a bearing. One end of the stirring rod 6 is equipped with an impeller 601, which is located inside the threaded connector 8. The other end of the stirring rod 6 is equipped with multiple stirring teeth 602, which are located inside the secondary inclined tube filter cartridge 2. When the modified lightweight ceramic particles 10 are stirred, the purified water flows through the threaded connector 8 under the pushing pressure of the backwash water pump 5 during backwashing. The water flow impacts the impeller 601, generating rotational power. This power is directly transmitted to the stirring teeth 602 at the other end through the stirring rod 6, thereby automatically stirring the modified lightweight ceramic particles 10 in the secondary inclined tube filter cylinder 2. During long-term filtration, due to the continuous accumulation of trapped suspended solids, the modified lightweight ceramic particles 10 are prone to adhesion and caking, resulting in narrowing of the filtration channel, increased water flow resistance, and even the formation of "dead zones" that cause some ceramic particles to completely lose their filtration function. The continuous low-speed stirring of the stirring teeth 602 keeps the ceramic particles in a micro-dynamic fluidized state. The particles rub and collide with each other, effectively preventing caking, ensuring the smooth flow of water and the effective utilization rate of the particle surface, and significantly extending the replacement cycle of the ceramic particles. Specifically: When the secondary inclined tube filter cylinder 2 becomes clogged, causing the water flow to slow down, the water storage drain pipe 303 can be closed and the backwash water pump 5 can be turned on to pump the clean water at the bottom of the tertiary filter water storage tank 3 back into the water storage connector 301. The water flow impacts the impeller 601 to generate rotational power. This power is directly transmitted to the stirring teeth 602 at the other end through the stirring rod 6, thereby automatically stirring the modified lightweight ceramic particles 10 in the secondary inclined tube filter cylinder 2. It can self-clean online, avoid frequent disassembly and cleaning, and greatly extend the continuous operation cycle. Therefore, this device adopts a vertical three-stage gravity flow layout, which is energy-saving, space-saving, and structurally stable. By using the pusher piston 401 to change static sedimentation into forced filtration and active pressure filtration, the solid-liquid separation efficiency is greatly improved. The treatment process forms a gradient chain of "coarse filtration-adsorption-cleaning", which intercepts pollutants in stages and extends the life of the packing. The fully threaded quick-release structure can be disassembled, cleaned, or replaced regularly, making maintenance convenient.

[0021] Furthermore, such as Figure 1 and Figure 6As shown, an overflow connector 101 is connected to one side of the upper port of the first-stage settling cylinder 1. The overflow connector 101 is connected to the inside of the first-stage settling cylinder 1. The inclined tube inlet connector 201 is connected to the overflow connector 101. The overflow connector 101 is located on one side of the upper port of the first-stage settling cylinder 1. The drainage mechanism 4 can automatically overflow the upper clear liquid of the sewage into the second-stage inclined tube filter cylinder 2, ensuring the stability of the liquid level under continuous water intake conditions, eliminating the need for a complex liquid level control system, and improving the purification efficiency. A water storage connector 301 is connected to one side of the upper port of the three-stage filtration water storage tank 3. A threaded connector 8 is connected to the water storage connector 301. Multiple support blocks 302 are fixedly installed on the inner side of the three-stage filtration water storage tank 3, and filter discs 7 are placed on the support blocks 302. Figure 9 As shown, the water storage connector 301 is located above the filter plate 7. Below the filter plate 7, a water storage drain pipe 303 is connected to the three-stage filter water storage tank 3. The water storage connector 301 is located on the upper port side, and the filter plate 7 is located below it. This means that after water enters from the top, it must pass through the filter plate 7 downwards before it can be discharged from the bottom, forcing all water to pass through the filter layer and preventing short-flow phenomenon. The filter disc 7 is supported by the support block 302 and is not fixedly connected. Operators can easily remove it through the filter disc handle 702 to clean or replace the fine filter screen 701 without disassembling the pipes or tank. The fine filter screen 701 is fixedly installed on the filter disc 7, and the filter disc handle 702 is fixedly installed in the middle of the fine filter screen 701. The water storage drain pipe 303 is connected to the bottom of the filter disc 7, so that all the water is finely filtered by the fine filter screen 701, ensuring the stability of the final water quality.

[0022] Furthermore, such as Figure 3 , Figure 4 as well as Figure 5As shown, the outer surface of the secondary inclined tube filter cylinder 2 is fixedly provided with anti-slip grooves 202. As a detachable intermediate unit, the anti-slip grooves 202 on the outer wall of the secondary inclined tube filter cylinder 2 increase friction, facilitating manual or tool-assisted installation / removal without the need for special clamps. The inclined tube inlet connector 201 and the threaded connector 8 have the same thread specification on their outer surfaces. A connector handle 803 is fixedly provided in the middle of the outer surface of the threaded connector 8, allowing the secondary inclined tube filter cylinder 2 to engage with the overflow connector 101 and the water storage connector 301 respectively, enabling synchronous movement. The upper and lower connectors have the same thread specification, meaning that when the secondary inclined tube filter cylinder 2 is rotated, the upper and lower threaded connections will engage or disengage synchronously. One end of the secondary inclined tube filter cylinder 2 is fixedly provided with an upper compaction baffle 2012. Multiple upper blocking holes 2013 are provided on the upper part of the filter cylinder 2. A lower compaction baffle 802 is fixedly installed at one end of the threaded connector 8 near the secondary inclined tube filter cylinder 2. Multiple lower blocking holes 8021 are provided on the lower compaction baffle 802. The stirring rod 6 is rotatably mounted on the lower compaction baffle 802. The upper compaction baffle 2012 is fixedly installed at the upper end of the secondary inclined tube filter cylinder 2, near the side of the inclined tube inlet connector 201. The lower compaction baffle 802 is fixedly installed at the lower end outlet of the threaded connector 8 near the secondary inclined tube filter cylinder 2. The two baffles constrain the ceramic particle layer within a fixed cavity space, which not only prevents the particles from flowing out from the upper and lower ports, but also changes the packing density of the ceramic particles by rotating the threaded connector 8, ensuring that the sewage can pass through the entire particle layer cross section evenly, avoiding the phenomenon of flow deviation and short circuit caused by particle drift. Specifically: During installation, the threaded connector 8 is first rotated into the interior of the secondary inclined tube filter cylinder 2 to compress the modified lightweight ceramic particles 10. After the secondary inclined tube filter cylinder 2 can be placed between the overflow connector 101 and the water storage connector 301, the inclined tube inlet connector 201 is first rotated into the interior of the overflow connector 101, and then the threaded connector 8 is rotated downward and fixed on the water storage connector 301 to complete the installation of the secondary inclined tube filter cylinder 2. This greatly simplifies the disassembly and assembly process when replacing the packing or repairing the inclined tube cylinder, and improves maintenance efficiency. During backflushing, the threaded connector 8 is rotated downward to change the density of the modified lightweight ceramic particles 10, which facilitates the stirring teeth 602 to stir the modified lightweight ceramic particles 10. The structure is simple and greatly improves the convenience of operation. In addition, such as Figure 1 and Figure 2 As shown, the inclination angle of the secondary inclined tube filter cylinder 2 ranges from 30° to 45°. This angle ensures that the particles can effectively slide and accumulate on the inclined tube wall, without causing a sudden increase in the resistance to the upward flow of water due to an excessively large inclination angle. At the same time, it facilitates the automatic sliding of sediments to the bottom collection area under the action of gravity, thereby improving the sedimentation efficiency.

[0023] Furthermore, such as Figure 7As shown, the drainage mechanism 4 includes a pusher piston 401 and an electric telescopic rod 402. The electric telescopic rod 402 is connected to the support mechanism 9. The electric telescopic rod 402 is used to vertically push the pusher piston 401. A motor fixing block 4021 is fixedly installed at the output end of the electric telescopic rod 402. The motor fixing block 4021 is fixedly connected to the bottom side of the pusher piston 401. Using the electric telescopic rod 402 as a power source, compared with hydraulic or pneumatic, it has the advantages of no oil pollution, precise speed and stroke control, and simple maintenance. It is very suitable for high-purity quartz sand washing wastewater treatment scenarios with high cleanliness requirements. The output end of the electric telescopic rod 402 is directly fixed to the bottom surface of the pusher piston 401 through the motor fixing block 4021. The thrust axis is completely coincident with the movement direction of the pusher piston 401, avoiding the wear or jamming of the pusher piston 401 caused by lateral force, and ensuring the reliability of long-term operation. A stirring motor 403 is fixedly installed inside the motor fixing block 4021. A stirring shaft 4031 is provided at the output end of the stirring motor 403. The stirring shaft 4031 passes through the pusher piston 401 and is rotatably connected to the pusher piston 401. The stirring motor 403 drives the stirring blades 4032 to rotate, which can stir the sewage in the first-stage sedimentation cylinder 1 before or during the rise of the pusher piston 401, promote the mixing of flocculant and suspended solids, accelerate the agglomeration of particulate matter into large flocs, and improve the sedimentation effect. A stirring blade 4032 is fixedly installed on the stirring shaft 4031. The stirring blade 4032 is rotatably installed inside the primary settling cylinder 1. A neodymium magnet 4033 is fixedly installed on the stirring blade 4032. High-purity quartz sand is most susceptible to iron impurities. By fixing the neodymium magnet 4033 on the stirring blade 4032, this design can continuously adsorb tiny iron-containing particles in the water during the stirring process, achieving "magnetic separation" purification in addition to physical and chemical sedimentation, and significantly improving the purity of the final product.

[0024] Finally, as Figure 1 and Figure 2 As shown, the support mechanism 9 includes a settling support frame 901 and a ladder 902. Since the first-stage settling tank 1 is located at the highest point, and the drainage mechanism 4, stirring motor 403, etc. are all located at the top, the ladder 902 provides a safe climbing passage for operators, facilitating daily inspections, adding chemicals to the first-stage tank, or maintenance of the upper equipment, thus improving ergonomic safety and operational convenience. A water pump support plate 9011 and a telescopic rod support plate 9012 are fixedly installed on the settling support frame 901. The backwash water pump 5 is fixedly installed on the water pump support plate 9011, and the electric telescopic rod 402 of the drainage mechanism 4 is fixedly installed on the telescopic rod support plate 9012. The water pump support plate 9011 and the telescopic rod support plate 9012 rigidly connect the power components, the backwash water pump 5 and the electric telescopic rod 402, to the three-stage filter storage tank 3 and the first-stage settling tank 1, effectively isolating the vibration generated by the operation of the power components.

[0025] like Figures 1-9 As shown in this embodiment, the principle of the multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater is as follows: Before entering the inclined tube, the wastewater first passes through the inclined tube inlet filter screen 2011 for coarse filtration, intercepting large suspended particles. When it flows through the modified lightweight ceramic particles 10, it undergoes secondary adsorption filtration. During backwashing, the purified water flows through the threaded connector 8 under the pushing pressure of the backwash water pump 5. The water flow impacts the impeller 601 to generate rotational power, forming a gradient treatment chain of "coarse filtration-adsorption-rinsing". This greatly extends the service life of each stage of the packing and avoids rapid clogging of single-stage filtration. In addition, both the inclined tube inlet connector 201 and the threaded connector 8 are threaded connections, and a filter screen is fixed at the port. The secondary inclined tube filter cylinder 2 can be directly disassembled, which means that these two filter screens and the modified lightweight ceramic particles 10 inside can be disassembled, cleaned or replaced regularly, making maintenance convenient.

[0026] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0028] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater, comprising a primary sedimentation tank (1) connected by a secondary inclined tube filter (2) and a tertiary filter storage tank (3), characterized in that, The first-stage settling cylinder (1) is located above the second-stage inclined tube filter cylinder (2), and the third-stage filter water storage tank (3) is located below the second-stage inclined tube filter cylinder (2). The bottom of the first-stage settling cylinder (1) and the third-stage filter water storage tank (3) are fixedly connected to a support mechanism (9). The first-stage settling cylinder (1) is equipped with a drainage mechanism (4) which is used to push sewage upward. The upper end of the second-stage inclined tube filter cylinder (2) is threadedly connected to the first-stage settling cylinder (1) through an inclined tube inlet connector (201). The lower end of the second-stage inclined tube filter cylinder (2) is connected to the third-stage filter storage tank (3) through a threaded connector (8). An inclined tube inlet filter screen (2011) is fixedly installed at the port of the inclined tube inlet connector (201). One end of the threaded connector (8) is threadedly connected to the bottom of the secondary inclined tube filter cylinder (2). The other end of the threaded connector (8) is fixedly installed with a drainage filter screen (801) and threadedly connected to the tertiary filter storage tank (3). The interior of the secondary inclined tube filter cylinder (2) is filled with modified lightweight ceramic particles (10). The threaded connector (8) is rotatably connected to a stirring rod (6) through a bearing. One end of the stirring rod (6) is provided with an impeller (601). The impeller (601) is located inside the threaded connector (8). The other end of the stirring rod (6) is provided with multiple stirring teeth (602) and located inside the secondary inclined tube filter cylinder (2) for stirring the modified lightweight ceramic particles (10).

2. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 1, characterized in that: An overflow connector (101) is connected to one side of the upper port of the first-stage settling cylinder (1). The overflow connector (101) is connected to the interior of the first-stage settling cylinder (1). The inclined tube inlet connector (201) is connected to the overflow connector (101). The upper port of the three-stage filtration water storage tank (3) is connected to a water storage connector (301), and the threaded connector (8) is connected to the water storage connector (301).

3. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 2, characterized in that: The outer side of the secondary inclined tube filter cylinder (2) is fixedly provided with an anti-slip groove (202). The outer side thread of the inclined tube water inlet connector (201) is the same as that of the threaded connector (8). The middle of the outer side of the threaded connector (8) is fixedly provided with a connector handle (803), so that the secondary inclined tube filter cylinder (2) is engaged with the overflow connector (101) and the water storage connector (301) respectively, for synchronous movement. One end of the secondary inclined tube filter cylinder (2) is fixedly provided with an upper compaction baffle (2012), and the upper compaction baffle (2012) is provided with a plurality of upper blocking holes (2013). The threaded connector (8) is fixedly provided with a lower compaction baffle (802) at one end near the secondary inclined tube filter cylinder (2), and the lower compaction baffle (802) is provided with a plurality of lower blocking holes (8021). The stirring rod (6) is rotatably provided on the lower compaction baffle (802).

4. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 1, characterized in that: The inclination angle of the secondary inclined tube filter cylinder (2) is in the range of 30°-45°.

5. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 1, characterized in that: The drainage mechanism (4) includes a pusher piston (401) and an electric telescopic rod (402). The electric telescopic rod (402) is connected to the support mechanism (9). The electric telescopic rod (402) is used to vertically push the pusher piston (401). A motor fixing block (4021) is fixedly provided at the output end of the electric telescopic rod (402). The motor fixing block (4021) is fixedly connected to the bottom side of the pusher piston (401).

6. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 5, characterized in that: A stirring motor (403) is fixedly installed inside the motor fixing block (4021). A stirring shaft (4031) is provided at the output end of the stirring motor (403). The stirring shaft (4031) passes through the water pusher piston (401) and is rotatably connected to the water pusher piston (401). A stirring blade (4032) is fixedly installed on the stirring shaft (4031). The stirring blade (4032) is rotatably installed inside the first-stage settling cylinder (1). A neodymium magnet (4033) is fixedly installed on the stirring blade (4032).

7. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 2, characterized in that: The bottom of the three-stage filtration water storage tank (3) is connected to a backwash water pump (5) via a water pump inlet pipe (501), and the backwash water pump (5) is connected to the water storage connector (301) via a water pump drain pipe (502). A solenoid valve (11) is provided between the water pump drain pipe (502) and the three-stage filter water storage tank (3), and the solenoid valve (11) is fixedly installed on the water storage connector (301).

8. The multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 2, characterized in that: Multiple support blocks (302) are fixedly installed on the inner side of the three-stage filtration water storage tank (3). A filter plate (7) is placed on the support block (302). The water storage connector (301) is located above the filter plate (7). A water storage drain pipe (303) is connected to the bottom of the filter plate (7) on the three-stage filtration water storage tank (3).

9. A multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 8, characterized in that: A fine filter screen (701) is fixedly installed on the filter disc (7), and a filter disc handle (702) is fixedly installed in the middle of the fine filter screen (701).

10. A multi-stage sedimentation treatment device for high-purity quartz sand washing wastewater according to claim 7, characterized in that: The support mechanism (9) includes a settling support frame (901) and a step ladder (902). A water pump support plate (9011) and a telescopic rod support plate (9012) are fixedly installed on the settling support frame (901). The backwash water pump (5) is fixedly installed on the water pump support plate (9011), and the drainage mechanism (4) is fixedly installed on the telescopic rod support plate (9012).

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