Wastewater recycling device for nuclear-grade zirconium oxide production

Abstract

The invention relates to the field of wastewater treatment, in particular to a wastewater recycling device for nuclear-grade zirconia production, which comprises an outer cylinder, a filter cartridge is fixedly mounted in the outer cylinder, two filter screen grooves in bilateral symmetry penetrate through the side surface of the filter cartridge, and filter screen plates are fixedly mounted in the filter screen grooves. A stirring rotating disc located on the outer side of the filter cartridge is coaxially and rotatably mounted at the top in the outer barrel, a plurality of chemical adding pipes which are circumferentially and uniformly distributed are mounted at the bottom of the stirring rotating disc, a plurality of stirring rods which are circumferentially and uniformly distributed are rotatably mounted at the bottom of the stirring rotating disc, and stirring blades are mounted on the outer sides of the stirring rods; a filter screen backwashing mechanism is mounted on the inner side of the filter cartridge, a dosing mechanism communicated with a plurality of dosing pipes is mounted at the top of the stirring turntable, and a stirring driving mechanism is mounted at the top in the outer barrel. The filter screen plate can be washed in the reverse direction through the filter screen backwashing mechanism, so that the filter effect of the filter screen plate is recovered.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a wastewater recycling device for nuclear-grade zirconia production. Background Art

[0002] Zirconia is a naturally occurring mineral raw material for zirconium oxide, primarily consisting of baddeleyite and zircon. Zircon is a mineral found deep within igneous rocks. Its colors range from pale yellow, brownish yellow, to yellow-green, with a specific gravity of 4.6-4.7 and a hardness of 7.5. It possesses a strong metallic luster and can be used as a raw material for ceramic glazes. Zirconia fiber: A precursor, zirconium acetylacetonate polymer, is synthesized using acetylacetone and zirconium oxychloride as the primary raw materials. This polymer is dissolved in methanol to produce a spinning solution, which is then dry-spun to produce continuous precursor fibers. Continuous zirconia fibers are then heat-treated and sintered to produce continuous zirconia fibers.

[0003] Zirconia: Mainly used in piezoelectric ceramics, household ceramics, refractory materials, and zirconium bricks, tubes, and crucibles for precious metal smelting. It is also used in the production of steel and non-ferrous metals, optical glass, and zirconium dioxide fibers. It can be used as a highly effective high-temperature thermal insulation material.

[0004] Zirconia fiber: In the fields of aerospace, national defense, and atomic energy, it is used for ultra-high temperature thermal insulation and protective materials and ceramic-based composite reinforcement materials; in the fields of ceramic sintering, metal smelting, high temperature decomposition, semiconductor manufacturing, quartz melting, etc., it is used to manufacture ultra-high temperature industrial kilns, ultra-high temperature experimental electric furnaces and other ultra-high temperature heating devices that can withstand temperatures above 1500°C; it can also be used as high temperature filter materials and high temperature reaction catalyst carriers, as well as as inert fillers for plastics, rubber, latex, etc.

[0005] The current zirconium oxide production process inevitably produces production wastewater. In order to meet emission standards, the wastewater needs to be treated. Common treatment steps include flocculation. Since the wastewater generated during the preparation process usually contains zirconium (such as zircon cleaning, pickling, etc.), the zirconium in the wastewater can be separated after flocculation treatment, realizing wastewater treatment and waste recycling at the same time.

[0006] During the flocculation reaction, flocculants (such as polyaluminum chloride, polyacrylamide, etc.) react with suspended matter and colloidal substances in the water to form larger flocs. The recycled wastewater is then filtered using filter paper or a screen to obtain wastewater that meets emission standards and can recycle waste materials. However, during a long filtration process, the flocs gradually accumulate on the surface of the filter and cause blockage. If they are not cleaned in time, it will affect subsequent filtration work.

[0007] Therefore, the present invention provides a wastewater recycling device for nuclear-grade zirconia production to solve the above problems. Summary of the Invention

[0008] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a wastewater recycling device for nuclear-grade zirconia production to solve the problems raised in the above background technology.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is:

[0010] A wastewater recycling device for nuclear-grade zirconia production, comprising an outer cylinder, a filter cylinder fixedly installed inside the outer cylinder, two left-right symmetrical filter screen slots passing through the side of the filter cylinder, a filter screen plate fixedly installed in the filter screen slot, a stirring turntable located on the outside of the filter cylinder coaxially mounted on the top of the outer cylinder, a plurality of circumferentially evenly distributed dosing pipes mounted on the bottom of the stirring turntable, a plurality of circumferentially evenly distributed stirring rods rotatably mounted on the bottom of the stirring turntable, stirring blades mounted on the outside of the stirring rods, a filter screen backwash mechanism mounted on the inside of the filter cylinder, a dosing mechanism connected to a plurality of dosing pipes mounted on the top of the stirring turntable, and a stirring drive mechanism mounted on the top of the outer cylinder.

[0011] Preferably, a water inlet pipe is passed through and installed on the top of the outer side of the outer cylinder, a water outlet pipe is passed through and installed between the middle of the bottom surface of the outer cylinder and the inside of the filter cylinder, and a discharge pipe is passed through and installed on the bottom of the outer cylinder.

[0012] Preferably, the outer side surface of the filter screen plate and the outer side surface of the filter cartridge are on the same circumferential surface, and the wall thickness of the filter screen plate is smaller than the wall thickness of the filter cartridge.

[0013] Preferably, the filter backwash mechanism includes a backwash bracket fixedly mounted on the inner wall of the filter cartridge and located on the inner side of each filter slot, a backwash push rod is passed through and slidably mounted on the middle part of each backwash bracket, and a plurality of the backwash push rods on the same side are commonly fixedly mounted with a backwash push plate facing one end of the filter screen plate, the backwash push plate is arc-shaped toward the side of the filter screen plate, and can fit with the inner side surface of the filter screen plate, and the width of the backwash push plate is the same as the width of the filter screen slot.

[0014] Preferably, a backwash spring is installed between one end of each backwash push rod away from the backwash push plate and abutted against the backwash bracket, a backwash shaft is rotatably installed in the middle of the top surface of the filter drum, the bottom end of the backwash shaft is sealed and rotatably connected to the water outlet pipe, the interior of the backwash shaft is hollow and a plurality of water collection holes are passed through the outer wall, a plurality of backwash turntables are coaxially fixedly installed on the outer surface of the backwash shaft, an arc-shaped backwash protrusion is fixedly installed on the outer surface of each backwash turntable, and a backwash push wheel is rotatably installed on the end of each backwash push rod facing the backwash turntable, the backwash push wheel abuts against the outer side surface of the backwash turntable, and the top end of the backwash shaft passes upward through the outside of the outer cylinder and is connected to the backwash motor.

[0015] Preferably, the dosing mechanism includes a dosing sealing ring coaxially fixedly mounted on the top of the stirring turntable, the cross-section of the dosing sealing ring is "L"-shaped, the bottom end of the dosing sealing ring is fixedly mounted on the top of the stirring turntable, and the top end is sealed and rotatably connected to the inner wall of the outer cylinder, and a drug supply pipe connected to the interior of the dosing sealing ring is passed through and installed on the outer surface of the outer cylinder, the drug supply pipe is connected to a drug supply pressure pump, and a plurality of dosing holes are passed through the outer surface of the dosing pipe.

[0016] Preferably, a plurality of filter scrapers that are evenly distributed circumferentially and are on the same radial line as the stirring rod are fixedly installed on the bottom surface of the stirring turntable, and the filter scrapers are fitted with the outer wall of the filter cylinder. A plurality of outer cylinder scrapers that are evenly distributed circumferentially and are on the same radial line as the stirring rod are fixedly installed on the bottom surface of the stirring turntable, and the outer cylinder scrapers are fitted with the inner wall of the outer cylinder.

[0017] Preferably, the bottom end of each stirring rod is rotatably connected to a support plate, and the support plate is circumferentially slidably fitted with the inner wall of the outer cylinder and the outer wall of the filter cylinder respectively. The bottom ends of the dosing tube, the filter scraper and the outer cylinder scraper are fixedly mounted on the top of the support plate, and a cylinder bottom inclined scraper is fixedly mounted on the bottom surface of each support plate.

[0018] Preferably, the stirring drive mechanism includes a stirring drive ring coaxially fixedly mounted on the top of the stirring turntable, a stirring drive gear ring coaxially fixedly mounted on the outer surface of the stirring drive ring, a stirring motor fixedly mounted on the top of the outer cylinder, and the rotating shaft of the stirring motor passes through the interior of the outer cylinder and is coaxially fixedly mounted with a stirring drive gear that engages with the stirring drive gear ring.

[0019] Preferably, a stirring self-rotating gear ring is coaxially fixedly mounted on the top inner wall of the outer cylinder, and a stirring self-rotating gear meshing with the stirring self-rotating gear ring is coaxially fixedly mounted on the top end of each stirring rod.

[0020] The beneficial effects of the present invention are:

[0021] 1. After the wastewater enters the outer cylinder, it is located on the outside of the filter cylinder. After the flocculant is added to the wastewater, it reacts with the waste material therein to produce flocs. The water can be filtered through the filter mesh plate and enter the interior of the filter cylinder, thereby realizing the filtration treatment of the wastewater. The dosing pipe can add flocculant to the wastewater, and the dosing pipe moves circumferentially with the stirring turntable, so that the dosing pipe can evenly add flocculant to the wastewater. The stirring turntable can drive multiple stirring rods to move circumferentially inside the outer cylinder, and each stirring rod can also rotate, thereby stirring the wastewater through multiple stirring blades to fully mix the wastewater and the flocculant.

[0022] 2. After a long period of filtration, a large amount of flocs accumulate on the outside of the filter screen, thereby clogging the filter screen and reducing its filtering effect. At this time, the filter screen can be flushed in the opposite direction through the filter screen backwashing mechanism. When the filter screen backwashing mechanism is working, it can reversely squeeze the filtered water on the inside of the filter cylinder, so that the filtered water passes through the filter screen in the opposite direction, thereby realizing reverse flushing of the filter screen. The filter screen backwashing mechanism can also seal the two filter screen slots. Before the wastewater enters the outer cylinder, the two filter screen slots can be sealed through the filter screen backwashing mechanism. After the wastewater enters the outer cylinder, first add flocculant to the wastewater and stir it for a period of time to allow the wastewater to fully produce flocs, and then open the two filter screen slots for filtration.

[0023] 3. When in use, the two backwash push plates can be moved into the two filter screen slots so that their arc surfaces fit with the filter screen plates, thereby sealing the filter screen slots. Then, wastewater can be injected into the outer cylinder and flocculant can be added for stirring. After stirring for a certain period of time and producing flocs, the two backwash push plates can be moved toward the middle of the filter cylinder to move them out of the filter screen slots. At this time, the wastewater can be filtered through the two filter screen plates, and the filtered water enters the filter cylinder. Open the valve on the outlet pipe to discharge it. Open the valve on the discharge pipe to discharge the filtered floc waste from the discharge pipe.

[0024] 4. After a certain period of use, flocculent waste accumulates on the outside of the filter screen and inside the filter holes. At this time, the two backwash push plates can be pushed to move into the two filter screen slots. When the backwash push plates just enter the filter screen slots, the backwash push plates and the sides of the filter screen slots are sealed. There is a certain amount of filtered water in the space between the filter screen and the backwash push plates. At this time, when the two backwash push plates continue to move toward the filter screen, they can squeeze the filtered water between the two, so that the filtered water passes through the two filter screens from the inside to the outside, thereby realizing the backwashing of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a perspective view of the present invention.

[0026] Figure 2 It is a front view of the present invention.

[0027] Figure 3 It is a left view of the present invention.

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the cross section at AA in the middle.

[0029] Figure 5 For the present invention Figure 3 Three-dimensional cross-section view at AA in the middle.

[0030] Figure 6 For the present invention Figure 2 Schematic diagram of the cross section at BB in the middle.

[0031] Figure 7 For the present invention Figure 4 Enlarged view of point C in the middle.

[0032] Figure 8 For the present invention Figure 5 Enlarged view of point D in the middle.

[0033] Figure 9 For the present invention Figure 5 Enlarged view of point E in the middle.

[0034] Figure: 1, outer cylinder; 2, filter cylinder; 3, filter screen slot; 4, filter screen plate; 5, stirring turntable; 6, dosing pipe; 7, stirring rod; 8, stirring blade; 9, filter screen backwash mechanism; 10, dosing mechanism; 11, stirring drive mechanism; 12, water inlet pipe; 13, water outlet pipe; 14, discharge pipe; 15, backwash bracket; 16, backwash push rod; 17, backwash push plate; 18, backwash spring; 19, backwash shaft; 191, backwash motor ; 20. Water collection hole; 21. Backwash turntable; 22. Backwash bump; 23. Backwash push wheel; 24. Dosing sealing ring; 25. Drug supply pipe; 26. Drug supply booster pump; 27. Dosing hole; 28. Filter scraper; 29. ​​Outer cylinder scraper; 30. Support plate; 31. Inclined scraper at the bottom of the cylinder; 32. Stirring drive ring; 33. Stirring drive gear ring; 34. Stirring motor; 35. Stirring drive gear; 36. Stirring self-rotating gear ring; 37. Stirring self-rotating gear. DETAILED DESCRIPTION

[0035] The following will refer to the attached Figures 1-9 DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention are described in detail.

[0036] A wastewater recycling device for nuclear grade zirconium oxide production, as shown in the attached Figure 1-9As shown, it includes an outer cylinder 1, and a steel structure bracket is installed at the bottom of the outer cylinder 1, which can fix the outer cylinder 1 on the ground, and a filter cylinder 2 is fixedly installed inside the outer cylinder 1, and two left-right symmetrical filter mesh grooves 3 are penetrated on the side of the filter cylinder 2, and a filter mesh plate 4 is fixedly installed in the filter mesh groove 3. After the wastewater enters the outer cylinder 1, it is located on the outside of the filter cylinder 2. After the flocculant is added to the wastewater, it reacts with the waste material therein to produce flocs, and the water can be filtered through the filter mesh plate 4 and enter the interior of the filter cylinder 2, thereby realizing the filtration treatment of the wastewater, and a stirring turntable 5 located on the outside of the filter cylinder 2 is coaxially installed on the top of the outer cylinder 1, and a plurality of circumferentially evenly distributed dosing pipes 6 are installed at the bottom of the stirring turntable 5. The dosing pipe 6 can add flocculant to the wastewater, and the dosing pipe 6 moves circumferentially with the stirring turntable 5, so that the dosing pipe 6 can evenly add flocculant to the wastewater;

[0037] The bottom of the stirring turntable 5 is rotatably mounted with a plurality of stirring rods 7 evenly distributed around the circumference. Stirring blades 8 are mounted on the outer sides of the stirring rods 7. The stirring turntable 5 can drive the plurality of stirring rods 7 to move circumferentially inside the outer cylinder 1. Each stirring rod 7 can also rotate on its own, thereby stirring the wastewater through the plurality of stirring blades 8, so that the wastewater and the flocculant are fully mixed.

[0038] A filter backwash mechanism 9 is installed on the inner side of the filter cylinder 2. After a long period of filtration, a large amount of flocs accumulate on the outer side of the filter plate 4, thereby clogging the filter plate 4 and reducing its filtering effect. At this time, the filter plate 4 can be flushed in the reverse direction by the filter backwash mechanism 9. When the filter backwash mechanism 9 is working, it can squeeze the filtered water inside the filter cylinder 2 in the reverse direction, so that the filtered water passes through the filter plate 4 in the reverse direction, thereby achieving reverse flushing of the filter plate 4.

[0039] Moreover, the filter backwash mechanism 9 can also achieve the sealing of the two filter mesh slots 3. Before the wastewater enters the outer cylinder 1, the two filter mesh slots 3 can be sealed by the filter backwash mechanism 9. After the wastewater enters the outer cylinder 1, a flocculant is first added to the wastewater and stirred for a period of time to allow the wastewater to fully generate flocs. Then, the two filter mesh slots 3 are opened for filtration.

[0040] A dosing mechanism 10 connected to a plurality of dosing tubes 6 is installed on the top of the stirring turntable 5. The dosing mechanism 10 can add flocculants to the interior of the plurality of dosing tubes 6 and pump the flocculants into the wastewater through the dosing tubes 6. A stirring drive mechanism 11 is installed on the top of the outer cylinder 1. The stirring drive mechanism 11 can drive the stirring turntable 5 to rotate and realize the circumferential movement and rotation of the plurality of stirring rods 7, thereby achieving stirring of the wastewater.

[0041] As attached Figures 1-9As shown, a water inlet pipe 12 is passed through and installed on the top of the outer side surface of the outer cylinder 1. The water inlet pipe 12 can be connected to the wastewater source through a flange to inject the wastewater into the interior of the outer cylinder 1. A water outlet pipe 13 is passed through and installed between the middle part of the bottom surface of the outer cylinder 1 and the interior of the filter cylinder 2. The water outlet pipe 13 can be connected to the discharge pipe through a flange to discharge or collect the treated and filtered wastewater. A discharge pipe 14 is passed through and installed on the bottom of the outer cylinder 1. The waste flocs remaining after filtration can be discharged from the discharge pipe 14. Both the water outlet pipe 13 and the discharge pipe 14 are equipped with valves.

[0042] As attached Figure 6 As shown, the outer side surface of the filter screen plate 4 and the outer side surface of the filter cartridge 2 are on the same circumferential surface, and the wall thickness of the filter screen plate 4 is smaller than the wall thickness of the filter cartridge 2 .

[0043] As attached Figure 4-Figure 9 As shown, the filter backwash mechanism 9 includes a backwash bracket 15 fixedly mounted on the inner wall of the filter cartridge 2 and located on the inner side of each filter screen slot 3, a backwash push rod 16 is penetrated and slidably mounted on the middle part of each backwash bracket 15, and a backwash push rod 16 on the same side is fixedly mounted on one end facing the filter screen plate 4. The backwash push plate 17 is arc-shaped on the side facing the filter screen plate 4 and can fit with the inner side of the filter screen plate 4. The width of the backwash push plate 17 is the same as the width of the filter screen slot 3, and the side of the backwash push plate 17 can be sealed and slid with the side of the filter screen slot 3;

[0044] When in use, the two backwash push plates 17 can be moved into the two filter screen slots 3 so that their arc surfaces fit into the filter screen plates 4, thereby achieving sealing of the filter screen slots 3. Then, wastewater can be injected into the outer cylinder 1 and flocculant can be added for stirring. After stirring for a certain period of time and generating flocs, the two backwash push plates 17 can be moved toward the middle of the filter cylinder 2 to move out of the filter screen slots 3. At this time, the wastewater can be filtered through the two filter screen plates 4, and the filtered water enters the filter cylinder 2. The valve on the outlet pipe 13 can be opened to discharge it, and the valve on the discharge pipe 14 can be opened to discharge the filtered floc waste from the discharge pipe 14.

[0045] After a certain period of use, flocculent waste accumulates on the outside of the filter screen plate 4 and inside the filter holes. At this time, the two backwash push plates 17 can be pushed to move into the two filter screen slots 3. When the backwash push plates 17 just enter the filter screen slots 3, the backwash push plates 17 are sealed with the side surfaces of the filter screen slots 3. A certain amount of filtered water is contained in the space between the filter screen plate 4 and the backwash push plates 17. At this time, when the two backwash push plates 17 continue to move toward the filter screen plate 4, the filtered water between the two can be squeezed, so that the filtered water passes through the two filter screen plates 4 from the inside to the outside, thereby realizing the backwashing of the filter screen plate 4 and restoring its filtering effect.

[0046] As attached Figure 4-Figure 9 As shown, a backwash spring 18 is installed between one end of each backwash push rod 16 away from the backwash push plate 17 and the backwash bracket 15. The backwash spring 18 is sleeved on the outside of the backwash push rod 16, one end of which abuts the backwash bracket 15, and the other end abuts the spring baffle installed on the outside of the tail end of the backwash push rod 16. When the backwash push rod 16 is squeezed by an external force and drives the backwash push plate 17 to move toward the inside of the filter groove 3 to seal it, or to backwash the filter screen 4, the backwash spring 18 is compressed. When the external force is removed, the backwash spring 18 can drive the backwash push rod 16 and the backwash push plate 17 to return to the middle of the filter cartridge 2. External force can be applied to the two backwash push rods 16 intermittently, so as to realize continuous multiple backwashing operations on the filter screen plate 4.

[0047] A backwash shaft 19 is rotatably mounted on the middle of the top surface of the filter cartridge 2, and the bottom end of the backwash shaft 19 is sealed and rotatably connected to the outlet pipe 13. The interior of the backwash shaft 19 is hollow and a plurality of water collection holes 20 are passed through the outer wall. Filtered water can enter the backwash shaft 19 through the plurality of water collection holes 20 and be discharged through the outlet pipe 13. A plurality of backwash turntables 21 uniformly and equidistantly distributed in the upper and lower directions are coaxially fixed on the outer surface of the backwash shaft 19. An arc-shaped backwash protrusion 22 is fixedly mounted on the outer surface of each backwash turntable 21. The backwash protrusion 22 is arc-shaped. When the backwash shaft 19 rotates, it can drive the backwash turntable 21 to rotate, thereby driving the backwash protrusion 22 to rotate. The block 22 rotates circumferentially, and a backwash push wheel 23 is rotatably installed at one end of each backwash push rod 16 toward the backwash turntable 21, and the backwash push wheel 23 abuts against the outer side of the backwash turntable 21. When the backwash turntable 21 drives the backwash protrusion 22 to rotate circumferentially, the backwash protrusion 22 can intermittently squeeze the backwash push wheel 23, so that it drives the backwash push rod 16 and the backwash push plate 17 to move back and forth in the direction of the filter mesh groove 3, thereby realizing multiple consecutive backwashing operations on the filter mesh plate 4. When the backwash protrusion 22 squeezes the backwash push wheel 23 to move the backwash push plate 17 to the inside of the filter mesh groove 3, the backwash rotating shaft 19 stops running, and the filter mesh groove 3 can be sealed at this time.

[0048] The top end of the backwash shaft 19 extends upwardly through the outside of the outer cylinder 1 and is connected to a backwash motor 191 . The backwash motor 191 is connected to a power source and a servo motor can be selected. When the servo motor 191 is started, it can drive the backwash shaft 19 to rotate.

[0049] As attached Figure 7-Figure 8As shown, the dosing mechanism 10 includes a dosing sealing ring 24 coaxially fixedly mounted on the top of the stirring turntable 5. The cross section of the dosing sealing ring 24 is "L"-shaped, and its bottom end is fixedly mounted on the top of the stirring turntable 5. Its top end is sealed and rotatably connected to the inner wall of the outer cylinder 1, so that a sealed space is formed between the dosing sealing ring 24 and the inner wall of the outer cylinder 1. The top ends of the multiple dosing tubes 6 pass through the stirring turntable 5 and are connected to the sealed space. When the stirring turntable 5 rotates, it can drive the dosing sealing ring 24 to rotate. A drug supply pipe 25 connected to the interior of the dosing sealing ring 24 is penetrated and installed on the outer surface of the outer cylinder 1. Flocculant can be added to the inside of the dosing sealing ring 24 through the drug supply pipe 25, and the flocculant can enter the multiple dosing tubes 6. Internally, the drug supply pipe 25 is connected to a drug supply pressure pump 26, and a plurality of dosing holes 27 are passed through the outer surface of the dosing pipe 6. When wastewater is injected into the outer cylinder 1, the wastewater will enter the dosing pipe 6 from the plurality of dosing holes 27. If no pressure is applied to the inside of the dosing pipe 6, the flocculant will mix with the wastewater inside the dosing pipe 6 to produce floccules, thereby blocking the dosing pipe 6. To avoid this situation, the drug supply pressure pump 26 can be started to provide pressure to the inside of the dosing sealing ring 24, so that the flocculant is pumped into the dosing pipe 6 under pressure, and the wastewater inside the dosing pipe 6 is squeezed outward from the plurality of dosing holes 27, and then the flocculant can also be sprayed into the wastewater from the plurality of dosing holes 27.

[0050] As attached Figure 6 As shown, a plurality of filter scrapers 28 evenly distributed around the circumference and on the same radial line as the stirring rod 7 are fixedly mounted on the bottom surface of the stirring turntable 5. The filter scrapers 28 are in contact with the outer wall of the filter cylinder 2. A plurality of outer cylinder scrapers 29 evenly distributed around the circumference and on the same radial line as the stirring rod 7 are fixedly mounted on the bottom surface of the stirring turntable 5. The outer cylinder scrapers 29 are in contact with the inner wall of the outer cylinder 1.

[0051] When the stirring turntable 5 rotates, it can drive the filter scraper 28 and the outer tube scraper 29 to move circumferentially. The filter scraper 28 can scrape off the flocs adhering to the outer wall of the filter tube 2 and the filter mesh plate 4, and the outer tube scraper 29 can scrape off the flocs adhering to the inner wall of the outer tube 1. When discharging the floc waste, it can prevent the floc waste from remaining on the inner wall of the outer tube 1 and the outer wall of the filter tube 2.

[0052] As attached Figure 9As shown, the bottom end of each stirring rod 7 is rotatably connected to a support plate 30, and the support plate 30 is respectively slidably matched with the inner wall of the outer cylinder 1 and the outer wall of the filter cylinder 2. The bottom ends of the dosing tube 6, the filter scraper 28 and the outer cylinder scraper 29 are fixedly mounted on the top of the support plate 30. When the stirring turntable 5 drives the multiple stirring rods 7 to move circumferentially, it can drive the multiple support plates 30 to move circumferentially, and when the stirring rod 7 rotates, it rotates on the top of the support plate 30. The bottom surface of each of the support plates 30 is fixedly mounted with a barrel bottom inclined scraper 31. When the support plates 30 move circumferentially, the barrel bottom inclined scraper 31 can rub and scrape the bottom wall of the outer cylinder 1 through the barrel bottom inclined scraper 31. When discharging floc waste, the multiple barrel bottom inclined scrapers 31 can scrape the flocs adhered to the bottom of the outer cylinder 1 to the discharge pipe 14 for discharge, thereby preventing floc waste from remaining at the bottom of the outer cylinder 1.

[0053] As attached Figure 4-Figure 5 、 Figure 7-Figure 8 As shown, the stirring drive mechanism 11 includes a stirring drive ring 32 coaxially fixedly mounted on the top of the stirring turntable 5, the stirring drive ring 32 can rotate synchronously with the stirring turntable 5, and a stirring drive ring gear 33 is coaxially fixedly mounted on the outer surface of the stirring drive ring 32, and the stirring drive ring gear 33 can rotate synchronously with the stirring drive ring 32. A stirring motor 34 is fixedly mounted on the top of the outer cylinder 1, and the stirring motor 34 is connected to a power supply. The rotating shaft of the stirring motor 34 passes through the interior of the outer cylinder 1 and is coaxially fixedly mounted with a stirring drive gear 35 meshing with the stirring drive ring gear 33. When the stirring motor 34 is started, it can drive the stirring drive gear 35 to rotate, and the stirring drive gear 35 drives the stirring drive ring gear 33 to rotate, thereby realizing the rotation of the stirring turntable 5 and driving the multiple stirring rods 7 to move circumferentially.

[0054] As attached Figure 7-Figure 8 As shown, a stirring self-rotating gear ring 36 is coaxially fixedly installed on the top inner wall of the outer cylinder 1, and a stirring self-rotating gear 37 meshing with the stirring self-rotating gear ring 36 is coaxially fixedly installed on the top of each stirring rod 7. When the stirring turntable 5 drives the multiple stirring rods 7 to move circumferentially, the stirring self-rotating gear 37 also moves circumferentially synchronously, meshing and rotating with the stirring self-rotating gear ring 36, thereby realizing the self-rotation of the stirring rod 7 and driving the stirring blade 8 to fully stir and mix the wastewater and flocculant.

[0055] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A wastewater recycling device for nuclear grade zirconia production, characterized in that: The invention comprises an outer cylinder (1), wherein a filter cylinder (2) is fixedly installed inside the outer cylinder (1), two filter screen grooves (3) are passed through the side of the filter cylinder (2), and a filter screen plate (4) is fixedly installed inside the filter screen groove (3). A stirring turntable (5) located outside the filter cylinder (2) is coaxially rotatably installed on the top of the outer cylinder (1), and a plurality of dosing pipes (6) evenly distributed around the circumference are installed at the bottom of the stirring turntable (5). A plurality of stirring rods (7) evenly distributed around the circumference are rotatably installed at the bottom of the stirring turntable (5), and stirring blades (8) are installed on the outside of each stirring rod (7). A filter screen backwashing mechanism (9) is installed on the inside of the filter cylinder (2), a dosing mechanism (10) connected to the plurality of dosing pipes (6) is installed on the top of the stirring turntable (5), and a stirring drive mechanism (11) is installed on the top of the outer cylinder (1).

2. A nuclear grade zirconia production wastewater recycling device according to claim 1, characterized in that: A water inlet pipe (12) is passed through and installed at the top of the outer side surface of the outer cylinder (1), a water outlet pipe (13) is passed through and installed between the middle of the bottom surface of the outer cylinder (1) and the interior of the filter cylinder (2), and a discharge pipe (14) is passed through and installed at the bottom of the outer cylinder (1).

3. A wastewater recycling device for nuclear grade zirconia production according to claim 1, characterized in that: The outer side surface of the filter screen plate (4) and the outer side surface of the filter cartridge (2) are located on the same circumferential surface, and the wall thickness of the filter screen plate (4) is smaller than the wall thickness of the filter cartridge (2).

4. A nuclear grade zirconia production wastewater recycling device according to claim 2, characterized in that: The filter backwash mechanism (9) comprises a backwash bracket (15) fixedly mounted on the inner wall of the filter cylinder (2) and located on the inner side of each filter screen slot (3); a backwash push rod (16) is passed through and slidably mounted in the middle of each backwash bracket (15); a plurality of backwash push rods (16) on the same side are fixedly mounted with a backwash push plate (17) at one end facing the filter screen plate (4); the backwash push plate (17) is arc-shaped on the side facing the filter screen plate (4) and can fit with the inner side surface of the filter screen plate (4); and the width of the backwash push plate (17) is the same as the width of the filter screen slot (3).

5. A nuclear grade zirconia production wastewater recycling device according to claim 4, characterized in that: A backwash spring (18) is installed between one end of each backwash push rod (16) away from the backwash push plate (17) and the backwash bracket (15), and a backwash shaft (19) is rotatably installed in the middle of the top surface of the filter cartridge (2). The bottom end of the backwash shaft (19) is sealed and rotatably connected to the water outlet pipe (13). The interior of the backwash shaft (19) is hollow and a plurality of water collection holes (20) are passed through the outer wall. The outer surface of the backwash shaft (19) is coaxially fixed. A plurality of backwash turntables (21) are installed, and an arc-shaped backwash protrusion (22) is fixedly installed on the outer surface of each backwash turntable (21). A backwash push wheel (23) is rotatably installed on one end of each backwash push rod (16) facing the backwash turntable (21), and the backwash push wheel (23) abuts against the outer surface of the backwash turntable (21). The top end of the backwash shaft (19) passes upward to the outside of the outer cylinder (1) and is connected to a backwash motor (191).

6. A nuclear grade zirconia production wastewater recycling device according to claim 1, characterized in that: The dosing mechanism (10) comprises a dosing sealing ring (24) coaxially fixedly mounted on the top of the stirring turntable (5); the cross section of the dosing sealing ring (24) is L-shaped, the bottom end of the dosing sealing ring (24) is fixedly mounted on the top of the stirring turntable (5), and the top end of the dosing sealing ring (24) is connected to the inner wall of the outer cylinder (1) in a sealed and rotatable manner; a drug supply pipe (25) connected to the interior of the dosing sealing ring (24) is passed through and mounted on the outer surface of the outer cylinder (1); the drug supply pipe (25) is connected to a drug supply pressure pump (26); and a plurality of dosing holes (27) are passed through the outer surface of the dosing pipe (6).

7. The wastewater recycling device for nuclear grade zirconia production according to claim 1, characterized in that: A plurality of filter scrapers (28) evenly distributed around the circumference and located on the same radial line as the stirring rod (7) are fixedly mounted on the bottom surface of the stirring turntable (5), and the filter scrapers (28) are in contact with the outer wall of the filter cylinder (2). A plurality of outer cylinder scrapers (29) evenly distributed around the circumference and located on the same radial line as the stirring rod (7) are fixedly mounted on the bottom surface of the stirring turntable (5), and the outer cylinder scrapers (29) are in contact with the inner wall of the outer cylinder (1).

8. A nuclear grade zirconia production wastewater recycling device according to claim 7, characterized in that: The bottom end of each stirring rod (7) is rotatably connected to a support plate (30), and the support plate (30) is circumferentially slidably matched with the inner wall of the outer cylinder (1) and the outer wall of the filter cylinder (2), respectively. The bottom ends of the dosing tube (6), the filter scraper (28) and the outer cylinder scraper (29) are fixedly mounted on the top of the support plate (30), and a cylinder bottom inclined scraper (31) is fixedly mounted on the bottom surface of each support plate (30).

9. The nuclear grade zirconia production wastewater recycling device according to claim 1, characterized in that: The stirring drive mechanism (11) comprises a stirring drive ring (32) coaxially fixedly mounted on the top of the stirring turntable (5); a stirring drive ring gear (33) coaxially fixedly mounted on the outer surface of the stirring drive ring (32); a stirring motor (34) fixedly mounted on the top of the outer cylinder (1); a rotating shaft of the stirring motor (34) passes through the interior of the outer cylinder (1) and coaxially fixedly mounted with a stirring drive gear (35) meshing with the stirring drive ring gear (33).

10. The nuclear grade zirconia production wastewater recycling device according to claim 9, characterized in that: A stirring self-rotating gear ring (36) is coaxially fixedly mounted on the top inner wall of the outer cylinder (1), and a stirring self-rotating gear (37) meshing with the stirring self-rotating gear ring (36) is coaxially fixedly mounted on the top end of each stirring rod (7).

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