A groundwater sedimentation ultrafiltration treatment device for laboratory detection

Abstract

This invention discloses a groundwater sedimentation ultrafiltration treatment device for laboratory testing, mainly relating to the technical field of water purification equipment. It includes a coarse filter tank and a fine filter tank with an open top. A first cylindrical body divides the coarse filter tank into an inlet chamber and a mixing chamber, and a second cylindrical body divides the fine filter tank into a sedimentation chamber and an outlet chamber. The bottom of the coarse filter tank has several through holes connecting the mixing chamber and the sedimentation chamber. The bottom of the fine filter tank and the top of the outlet tank each have several first concave rings and second concave rings. A sleeve is provided between the first and second concave rings, and an ultrafiltration membrane is mounted on the sleeve. It also includes an outlet pipe connected to the outlet tank. The advantages of this invention are: solving the problems of inconvenience in replacing the filter membrane and cleaning residual contaminants and flocculent matter from the tank; avoiding interference with subsequent experiments with different parameters; improving the accuracy of experimental data; and meeting the practical needs of laboratories for rapid testing and process optimization.

Description

Technical Field

[0001] This invention relates to the technical field of water purification equipment, specifically a groundwater sedimentation ultrafiltration treatment device for laboratory testing. Background Technology

[0002] Groundwater, hidden in rock fissures and tunnels beneath the surface, is a vital component of Earth's water resources, playing an irreplaceable role in maintaining the ecological environment and in social production and daily life. However, in recent years, with the continuous advancement of industrialization, the discharge of industrial waste has intensified. Large amounts of industrial wastewater and waste residue containing pollutants such as heavy metals, suspended impurities, and organic matter seep into groundwater bodies through infiltration and leakage, leading to varying degrees of groundwater pollution in some areas.

[0003] To achieve the purification and reuse of polluted groundwater, the industry generally adopts a pretreatment method of "adding flocculants + static sedimentation," combined with ultrafiltration equipment for deep treatment, thereby improving the purification effect of groundwater. Specifically, through the coagulation effect of flocculants, fine impurities in groundwater are condensed into large flocs. After static sedimentation, some pollutants are separated. Then, with the membrane separation principle of ultrafiltration equipment, large molecular impurities, suspended solids, colloids and other pollutants remaining in the groundwater are further intercepted, thereby improving the groundwater quality and making it meet the usage standards.

[0004] In laboratory testing scenarios, the core requirement is to compare and analyze the purification effects under different process parameters by changing different types of flocculants and ultrafiltration membranes, thereby optimizing the groundwater purification process. However, existing laboratory groundwater sedimentation ultrafiltration treatment tanks mostly adopt fixed structures with welded or flanged connections, which makes it inconvenient to quickly disassemble the tank and replace the internal filter membrane. This results in a long time consumption for replacing membrane modules during experiments, seriously affecting experimental efficiency. At the same time, the fixed tank structure makes internal cleaning difficult. Incomplete cleaning can easily leave pollutants and flocculent matter, which can interfere with subsequent experiments with different parameters, affecting the accuracy of experimental data and failing to meet the actual needs of laboratories to quickly carry out testing and optimize processes. Summary of the Invention

[0005] The purpose of this invention is to provide a groundwater sedimentation ultrafiltration treatment device for laboratory testing, which solves the problems of inconvenience in replacing filter membranes and cleaning residual pollutants and flocculents in the tank, avoids interference with subsequent experiments with different parameters, improves the accuracy of experimental data, and meets the actual needs of laboratories to quickly carry out testing and optimize processes.

[0006] To achieve the above objectives, the invention employs the following technical solution: A groundwater sedimentation ultrafiltration treatment device for laboratory testing includes a base frame, and an outlet tank, a fine filter tank, and a coarse filter tank arranged from bottom to top on the base frame. The tops of both the coarse and fine filter tanks are open. A first cylindrical body and a second cylindrical body are respectively provided on the coarse and fine filter tanks. The first cylindrical body divides the coarse filter tank into an inlet chamber and a mixing chamber. An inlet pipe communicating with the inlet chamber is provided on the coarse filter tank. A cover plate slidably connected to the top of the base frame and in contact with the coarse filter tank is rotatably connected to the cover plate. A stirring shaft is provided on the stirring shaft, and stirring blades are provided for use with the mixing chamber. The coarse filter tank is provided with a flocculant pipe connected to the mixing chamber. The second cylinder divides the fine filter tank into a sedimentation chamber and an outlet chamber. The bottom of the coarse filter tank is provided with several through holes connecting the mixing chamber and the sedimentation chamber. The bottom of the fine filter tank and the top of the outlet tank are respectively provided with several first concave rings and second concave rings. A sleeve is provided between the first concave rings and the second concave rings. The two ends of the sleeve are in sliding contact with the first concave rings and the second concave rings, respectively. The sleeve is provided with a filtration chamber connected to the fine filter tank and the outlet tank. The filtration chamber is provided with an ultrafiltration membrane and also includes an outlet pipe connected to the outlet tank.

[0007] Furthermore, there are multiple stirring shafts and stirring blades, and a turntable is rotatably connected to the cover plate, with multiple stirring shafts rotatably mounted on the turntable.

[0008] Furthermore, the cover plate is provided with a rotating shaft connected to the turntable, and also includes a drive motor installed on the cover plate. The movable end of the drive motor is connected to the rotating shaft. The end of the stirring shaft is provided with a gear, and the coarse filter tank is provided with an annular rack that meshes with the gear.

[0009] Furthermore, the turntable is provided with a filter basket for use with the water outlet tank. The turntable is provided with a sliding groove. The top of the filter basket is provided with a slider that is slidably connected to the sliding groove. The slider is rotatably connected with a first roller and a second roller that are in contact with both sides of the turntable. A first limiting block is slidably connected to the turntable. The first limiting block has a first inclined surface and a second inclined surface on both sides that are in contact with the first roller. A first spring is provided between the first limiting block and the turntable.

[0010] Furthermore, the bottom of the coarse filter tank is provided with a positioning ring, the top of the fine filter tank is provided with a positioning groove that slides in contact with the positioning ring, a first sealing ring is provided between the positioning ring and the fine filter tank, and a conical groove is provided on the positioning ring that contacts the first sealing ring.

[0011] Furthermore, the sleeve has a first groove and a second groove at both ends, and a coarse-pore filter screen and a fine-pore filter screen are respectively provided in the first groove and the second groove. A second sealing ring and a third sealing ring are respectively provided between the two ends of the sleeve and the fine filter tank and the water outlet tank. The ultrafiltration membrane is spirally arranged.

[0012] Furthermore, the top ends of the first cylinder and the second cylinder are respectively provided with a first overflow port and a second overflow port.

[0013] Furthermore, the base frame is provided with a number of fixing bolts, the cover plate is slidably connected with a second limiting block, the end of the fixing bolt is provided with a first limiting groove that contacts the second limiting block, one end of the fixing bolt is provided with a fixing nut that contacts the cover plate, and a second spring is provided between the fixing nut and the base frame.

[0014] Furthermore, a third inclined surface is provided on one side of the second limiting block to contact the fixing bolt, and a third spring is provided between the second limiting block and the cover plate.

[0015] Furthermore, the fixing bolt is provided with a second limiting groove that communicates with the first limiting groove. The two sides of the second limiting groove are respectively provided with a fourth inclined surface that contacts the second limiting block. The fixing bolt is provided with a guide rod. The base frame is provided with a vertical groove and a spiral groove that communicates with the vertical groove. The guide rod is slidably disposed in the vertical groove and the spiral groove in sequence. The top of the second limiting block is provided with a fifth inclined surface that contacts the first limiting groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When testing the purification process of groundwater treatment in the laboratory, first place the sleeve between the fine filter tank and the effluent tank. Insert both ends of the sleeve into the first and second concave rings respectively. The first and second concave rings slide in contact with the sleeve, which positions the sleeve between the fine filter tank and the effluent tank, restricting the sleeve from moving freely between the two tanks and achieving a preliminary connection between them. Then, place the effluent tank on the base frame, and then stack the coarse filter tank on top of the fine filter tank. Finally, slide the cover plate on the base frame so that the cover plate contacts the top of the coarse filter tank, thereby restricting the relative movement of the coarse filter tank, fine filter tank, sleeve, and effluent tank. This completes the assembly of the purification device without the need to use bolts to connect the coarse filter tank, fine filter tank, sleeve, and effluent tank one by one, thus simplifying the assembly steps of the groundwater purification equipment and improving the efficiency of laboratory testing of the groundwater purification process. 2. When groundwater purification is required, groundwater is first introduced into the inlet chamber through the inlet pipe. By controlling the flow rate of the groundwater, it rises slowly within the inlet chamber. Larger particles in the groundwater settle at the bottom of the inlet chamber, thus achieving initial filtration. The groundwater that rises to the top of the first cylinder gradually overflows and enters the mixing chamber. Flocculant is added to the mixing chamber through the flocculant pipe. The stirring shaft rotates on the cover plate, driving the stirring blades to agitate the groundwater and flocculant, ensuring thorough mixing. Through the coagulation effect of the flocculant, the fine impurities in the groundwater condense into large flocs. Then, the groundwater and large flocs pass through the through-holes into the sedimentation chamber below, where they are allowed to settle again, allowing the large flocs to settle to the bottom. The process involves secondary filtration of groundwater to further improve its purification effect. The groundwater then slowly rises to the top of the second cylinder, gradually overflowing and entering the outlet chamber. Finally, the groundwater passes through several sleeve-type filter chambers, where ultrafiltration membranes further filter the groundwater, removing residual large molecular particles, suspended solids, colloids, and other pollutants, thus improving the quality of the purified groundwater. The purified groundwater then enters the outlet tank and is discharged through the outlet pipe. The purified groundwater is then tested by a testing agency to obtain the treatment results. By changing different types of flocculants and ultrafiltration membranes, the purification effect under different process parameters is compared and analyzed to optimize the groundwater purification process. 3. After purification, remove the restriction on the coarse filter tank by moving the cover plate upwards. Disassemble the coarse filter tank, fine filter tank, sleeve and effluent tank. Clean the residual pollutants and flocculents in the coarse filter tank and fine filter tank in a timely and thorough manner to avoid interference with subsequent experiments with different parameters, improve the accuracy of experimental data, and meet the actual needs of the laboratory to quickly carry out testing and optimize the process. 4. The drive motor rotates the rotating shaft, causing the turntable to rotate on the cover plate. This drives several stirring shafts and blades to move within the mixing chamber, further enhancing the mixing effect of groundwater and flocculant, thus improving the groundwater purification process. Simultaneously, during the turntable's rotation, the gears at the ends of the stirring shafts mesh with the ring rack, driving several stirring shafts to rotate on the cover plate, further mixing the groundwater and flocculant within the mixing chamber and improving the groundwater purification process. Furthermore, there is no need for a separate power unit to drive multiple stirring shafts to rotate on the cover plate, reducing the space required for power unit installation and the manufacturing cost. 5. When the drive motor rotates the turntable on the cover plate, the filter basket on the turntable scoops up impurities floating on the water tank, further removing impurities from the groundwater and improving the groundwater purification process. At the same time, the resistance generated when the filter basket comes into contact with the groundwater further pushes the slider to slide in the groove, confining the filter basket on the turntable and improving the stability of the overall structure. In addition, there is no need to set up an additional power unit to drive the filter basket to rotate on the cover plate, reducing the space required for power unit installation and the cost of manufacturing. 6. When initially fixing the cover plate to the base frame to assemble the purification equipment, pass one end of the fixing bolt through the base frame and the cover plate in sequence. Through the cooperation between the fixing bolt, the third inclined surface, the second limiting block, and the first limiting groove, the second limiting groove slides into the first limiting groove. The upper side of the second limiting block contacts the first limiting groove, restricting the downward movement of the fixing bolt. Then, place the second spring and the fixing nut on the other end of the fixing bolt. By rotating the fixing nut, the second spring is compressed. At the same time, the first limiting groove contacts the second limiting block, and the resulting force will push the cover plate downward until the whole is in a locked state, thus fixing the water purification equipment on the base frame. At the same time, the first sealing ring, the second sealing ring, and the third sealing ring are further compressed to improve the overall sealing performance of the water purification equipment. When it is necessary to release the cover plate from the base frame, push the fixing bolt upwards. Through the cooperation between the fixing bolt, guide rod, vertical groove, second limiting block, first limiting groove, second limiting groove, spiral groove, and fourth inclined surface, the two second limiting blocks move to both sides. Then, remove the force applied to the fixing bolt. The rebound force generated after the second spring is compressed will drive the fixing nut to move downwards quickly. Before the third spring pushes the second limiting block to reset, the first limiting groove contacts the fifth inclined surface on the upper side of the second limiting block. The resulting force pushes the two second limiting blocks to both sides again, allowing the fixing bolt to pass smoothly through the limiting block, thereby releasing the cover plate. This eliminates the need for prolonged bolt tightening, further improving the efficiency of disassembling the purification equipment and shortening the time required to replace the filter membrane and clean the tank of residual pollutants and flocculent matter, meeting the actual needs of the laboratory to quickly conduct testing and optimize processes. When the cover plate is fixed again, the fixing bolt is lifted, compressing the second spring so that the end of the fixing bolt protrudes from the cover plate and contacts the third inclined surface. The resulting rebound force pushes the two second limiting blocks to move to both sides and compresses the third spring, further squeezing the first, second, and third sealing rings, improving the overall sealing performance of the water purification equipment. This continues until the second limiting block moves to the first limiting groove, and under the action of the rebound force of the third spring, pushes the second limiting block into the first limiting groove. The resistance generated after the two come into contact achieves the fixing of the water purification equipment on the base frame. At the same time, the rebound force generated after the second spring is compressed further squeezes the first, second, and third sealing rings, improving the overall sealing performance of the water purification equipment. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Appendix Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0019] Appendix Figure 3 This is a schematic diagram of the coarse filter tank of the present invention.

[0020] Appendix Figure 4 This is a schematic diagram of the sleeve structure of the present invention.

[0021] Appendix Figure 5 This is a schematic diagram of the structure of the stirring blade of the present invention.

[0022] Appendix Figure 6 This is a schematic diagram of the structure of the turntable of the present invention.

[0023] Appendix Figure 7 This is an appendix to the present invention. Figure 3 A magnified view of part A in the middle.

[0024] Appendix Figure 8 This is a schematic diagram of the structure of the filter basket of the present invention.

[0025] Appendix Figure 9 This is a schematic diagram of the structure of the second limiting block of the present invention.

[0026] Appendix Figure 10 This is a schematic diagram of the spiral groove structure of the present invention.

[0027] Appendix Figure 11 This is a schematic diagram of the structure of the fixing bolt of the present invention.

[0028] The labels shown in the attached diagram: 1. Base frame; 2. Outlet tank; 3. Fine filter tank; 4. Coarse filter tank; 5. First cylinder; 6. Second cylinder; 7. Inlet chamber; 8. Mixing chamber; 9. Inlet pipe; 10. Cover plate; 11. Stirring shaft; 12. Stirring blade; 13. Flocculant pipe; 14. Sedimentation chamber; 15. Outlet chamber; 16. Through hole; 17. First concave ring; 18. Second concave ring; 19. Sleeve; 20. Filtration chamber; 21. Ultrafiltration membrane; 22. Outlet pipe; 23. Turntable; 24. Rotating shaft; 25. Drive motor; 26. Gear; 27. Ring rack; 28. Filter basket; 29. ​​Slide groove; 30. Slider; 31. First roller; 32. Second roller; 33. First limiting block; 34. First inclined surface; 35. Second inclined surface; 36. First spring; 37. Positioning ring; 38. Positioning groove; 39. First sealing ring; 40. Conical groove; 41. First groove; 42. Second groove; 43. Coarse-pore filter screen; 44. Fine-pore filter screen; 45. Second sealing ring; 46. Third sealing ring; 47. First overflow port; 48. Second overflow port; 49. Fixing bolt; 50. Second limiting block; 51. First limiting groove; 52. Fixing nut; 53. Second spring; 54. Third inclined plane; 55. Third spring; 56. Second limiting groove; 57. Fourth inclined plane; 58. Guide rod; 59. Vertical groove; 60. Spiral groove; 61. Fifth inclined plane. Detailed Implementation

[0029] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0030] This invention provides a groundwater sedimentation ultrafiltration treatment device for laboratory testing, such as... Figures 1-5As shown, the system includes a base frame 1, and an outlet tank 2, a fine filter tank 3, and a coarse filter tank 4, arranged from bottom to top on the base frame 1. The tops of both the coarse filter tank 4 and the fine filter tank 3 are open. The coarse filter tank 4 and the fine filter tank 3 are respectively provided with a first cylindrical body 5 and a second cylindrical body 6. The first cylindrical body 5 divides the coarse filter tank 4 into an inlet chamber 7 and a mixing chamber 8. The coarse filter tank 4 is provided with an inlet pipe 9 communicating with the inlet chamber 7. A cover plate 10, which contacts the coarse filter tank 4, is slidably connected to the top of the base frame 1. A stirring shaft 11 is rotatably connected to the cover plate 10, and the stirring shaft 11 is provided with a connection to the mixing chamber. The coarse filter tank 4 is equipped with a stirring blade 12 for use with the mixing chamber 8. A flocculant pipe 13 is connected to the mixing chamber 8 on the coarse filter tank 4. The second cylinder 6 divides the fine filter tank 3 into a sedimentation chamber 14 and an outlet chamber 15. The bottom of the coarse filter tank 4 has several through holes 16 connecting the mixing chamber 8 and the sedimentation chamber 14. The bottom of the fine filter tank 3 and the top of the outlet tank 2 are respectively provided with several first concave rings 17 and second concave rings 18. A sleeve 19 is provided between the first concave rings 17 and the second concave rings 18. The two ends of the sleeve 19 are in sliding contact with the first concave rings 17 and the second concave rings 18, respectively. The sleeve 19 is equipped with a filter chamber 20 connected to the fine filter tank 3 and the outlet tank 2. The filter chamber 20 is equipped with an ultrafiltration membrane 21 and also includes an outlet pipe 22 connected to the outlet tank 2. When testing the purification process for treating groundwater in the laboratory, the sleeve 19 is first placed between the fine filter tank 3 and the outlet tank 2. The two ends of the sleeve 19 are respectively inserted into the first concave ring 17 and the second concave ring 18. The first concave ring 17 and the second concave ring 18 slide in contact with the sleeve 19, which positions the sleeve 19 between the fine filter tank 3 and the outlet tank 2, restricting the sleeve 19 from moving freely between the fine filter tank 3 and the outlet tank 2. The water tanks 2 are moved to achieve a preliminary connection between the fine filter tank 3 and the outlet tank 2. Then, the outlet tank 2 is placed on the base frame 1, and the coarse filter tank 4 is stacked on the fine filter tank 3. Finally, the cover plate 10 is slid on the base frame 1 so that the cover plate 10 contacts the top of the coarse filter tank 4, thereby restricting the relative movement of the coarse filter tank 4, the fine filter tank 3, the sleeve 19 and the outlet tank 2, and realizing the assembly of the purification device. It is not necessary to use bolts to connect the coarse filter tank 4, the fine filter tank 3, the sleeve 19 and the outlet tank 2 one by one, thus simplifying the steps of assembling the groundwater purification equipment and improving the efficiency of the purification process for testing and treating groundwater in the laboratory. When groundwater needs purification, groundwater is first introduced into the inlet chamber 7 through the inlet pipe 9. By controlling the flow rate of the groundwater, it rises slowly within the inlet chamber 7. Larger particles in the groundwater settle at the bottom of the inlet chamber 7, thus achieving initial filtration. The groundwater that rises to the top of the first cylinder 5 gradually overflows and enters the mixing chamber 8. Flocculant is added into the mixing chamber 8 through the flocculant pipe 13. The stirring shaft 11 rotates on the cover plate 10, driving the stirring blades 12 to agitate the groundwater and flocculant, ensuring thorough mixing. Through the coagulation effect of the flocculant, the fine impurities in the groundwater condense into large flocs. Then, the groundwater and large flocs enter the sedimentation chamber 14 below through the through hole 16, where they are allowed to settle again, allowing the large flocs to settle to the bottom. The process involves secondary filtration of groundwater to further improve its purification effect. The groundwater then slowly rises to the top of the second cylinder 6, gradually overflowing and entering the outlet chamber 15. Finally, the groundwater passes through the filter chambers 20 of several sleeves 19, where ultrafiltration membranes 21 further filter the groundwater, trapping large molecular impurities, suspended solids, colloids, and other pollutants, thus improving the quality of the purified groundwater. The purified groundwater then enters the outlet tank 2 and is discharged through the outlet pipe 22. The purified groundwater is then tested by a testing agency to obtain the treatment results. By replacing different types of flocculants and ultrafiltration membranes 21, the purification effect under different process parameters is compared and analyzed to optimize the groundwater purification process. After purification, the cover plate 10 is moved upward to remove the restriction on the coarse filter tank 4, and the coarse filter tank 4, fine filter tank 3, sleeve 19 and effluent tank 2 are disassembled. The residual pollutants and flocculents in the coarse filter tank 4 and fine filter tank 3 are cleaned in a timely and thorough manner to avoid interference with subsequent experiments with different parameters, improve the accuracy of experimental data, and meet the actual needs of the laboratory to quickly carry out testing and optimize the process.

[0031] Preferred, such as Figure 5 and Figure 6 As shown, there are multiple stirring shafts 11 and stirring blades 12. The stirring by multiple stirring blades 12 improves the effect of mixing groundwater and flocculant in the mixing chamber 8, thereby improving the groundwater purification process. A turntable 23 is rotatably connected to the cover plate 10. Multiple stirring shafts 11 are rotatably mounted on the turntable 23. The rotation of the turntable 23 on the cover plate 10 drives the stirring shafts 11 and stirring blades 12 to move in the mixing chamber 8, further improving the effect of mixing groundwater and flocculant in the mixing chamber 8, and improving the groundwater purification process.

[0032] Preferred, such as Figure 2 , Figure 3 and Figure 6As shown, the cover plate 10 is provided with a rotating shaft 24 connected to the turntable 23, and also includes a drive motor 25 provided on the cover plate 10. The movable end of the drive motor 25 is connected to the rotating shaft 24. The end of the stirring shaft 11 is provided with a gear 26, and the coarse filter tank 4 is provided with an annular rack 27 that meshes with the gear 26. The drive motor 25 drives the rotating shaft 24 to rotate, causing the turntable 23 to rotate on the cover plate 10, which drives several stirring shafts 11 and stirring blades 12 to move in the mixing chamber 8, further improving the mixing effect of groundwater and flocculant in the mixing chamber 8, and improving the groundwater purification process. At the same time, during the rotation of the turntable 23, since the gear 26 at the end of the stirring shaft 11 meshes with the annular rack 27, it will drive several stirring shafts 11 to rotate on the cover plate 10, further stirring the groundwater and flocculant in the mixing chamber 8, and improving the groundwater purification process. In addition, there is no need to set up a separate power unit to drive multiple stirring shafts 11 to rotate on the cover plate 10, reducing the space required for power unit installation and the cost required for manufacturing.

[0033] Preferred, such as Figure 8As shown, the turntable 23 is equipped with a filter basket 28 for use with the water outlet tank 2. The filter basket 28 removes impurities floating on the water outlet tank 2, further removing impurities from the groundwater and improving the groundwater purification process. The turntable 23 is equipped with a sliding groove 29. The top of the filter basket 28 is equipped with a slider 30 that is slidably connected to the sliding groove 29. The slider 30 is rotatably connected to a first roller 31 and a second roller 32 that contact both sides of the turntable 23. A first limiting block 33 is slidably connected to the turntable 23. The two sides of the first limiting block 33 are respectively equipped with a first inclined surface 34 and a second inclined surface 35 that contact the first roller 31. A first spring 36 is provided between the first limiting block 33 and the turntable 23. When the filter basket 28 needs to be installed, the slider 30 is slid into the sliding groove 29, corresponding to the slider 30 and the sliding groove 29. The first roller 31 and the second roller 32 simultaneously roll and contact both sides of the turntable 23, so that the filter basket 28 is slidably set on the turntable 23. Next, the filter basket 28 is slid further, so that the first roller 31 on the filter basket 28 contacts the first inclined surface 34 on one side of the first limiting block 33. The resulting force drives the first limiting block 33 to slide on the turntable 23 and compresses the first spring 36, so that the first roller 31 slides past the first limiting block 33. Then, under the action of the rebound force of the first spring 36, the first limiting block 33 is driven to reset, so that the second inclined surface 35 on the other side of the first limiting block 33 contacts the first roller 31, thereby initially fixing the filter basket 28 on the turntable 23. When the drive motor 25 drives the turntable 23 to rotate on the cover plate 10, the resistance generated after the filter basket 28 comes into contact with the groundwater further pushes the slider 30 to slide in the slide groove 29, restricting the filter basket 28 on the turntable 23 and improving the stability of the overall structure. In addition, there is no need to set up an additional power device to drive the filter basket 28 to rotate on the cover plate 10, reducing the space required for power device installation and the cost required for manufacturing.

[0034] Preferred, such as Figure 7 As shown, the bottom of the coarse filter tank 4 is provided with a positioning ring 37, and the top of the fine filter tank 3 is provided with a positioning groove 38 that slides in contact with the positioning ring 37. The sliding contact between the positioning ring 37 and the positioning groove 38 guides the connection between the coarse filter tank 4 and the fine filter tank 3, improving the stability and connection efficiency between the coarse filter tank 4 and the fine filter tank 3, and meeting the actual needs of the laboratory to quickly carry out testing and optimize the process. A first sealing ring 39 is provided between the positioning ring 37 and the fine filter tank 3. The positioning ring 37 is provided with a conical groove 40 that contacts the first sealing ring 39. The contact between the conical groove 40 and the first sealing ring 39 compresses and deforms the first sealing ring 39, thereby improving the sealing performance between the coarse filter tank 4 and the fine filter tank 3, preventing groundwater from leaking out from the gap between the coarse filter tank 4 and the fine filter tank 3, improving the stability of the overall structure, and improving the accuracy of experimental data.

[0035] Preferred, such as Figure 4 As shown, the sleeve 19 has a first groove 41 and a second groove 42 at both ends. The first groove 41 and the second groove 42 are respectively provided with a coarse-pore filter screen 43 and a fine-pore filter screen 44. The groundwater entering the sleeve 19 is further filtered by the coarse-pore filter screen 43 to prevent larger impurities from clogging the ultrafiltration membrane 21 and affecting the filtration effect of the ultrafiltration membrane 21. The fine-pore filter screen 44 intercepts smaller impurities, further removing impurities from the groundwater and improving the groundwater purification process. The sleeve 19 has a second sealing ring 45 and a third sealing ring 46 between its two ends and the fine filter tank 3 and the outlet tank 2, respectively. The ultrafiltration membrane 21 is spirally arranged to increase the surface area between the ultrafiltration membrane 21 and the groundwater, realizing multiple filtration of the groundwater. At the same time, it guides the flow of groundwater, preventing groundwater from directly passing through the filter chamber 20, prolonging the residence time of the groundwater, further removing impurities from the groundwater, and improving the groundwater purification process.

[0036] Preferred, such as Figure 3 As shown, the top of the first cylinder 5 and the second cylinder 6 are respectively provided with a first overflow port 47 and a second overflow port 48. The groundwater in the first cylinder 5 and the second cylinder 6 overflows from the first overflow port 47 and the second overflow port 48, respectively, further intercepting larger impurities on the water surface and improving the groundwater purification process.

[0037] Preferred, such as Figure 3 and Figure 9 As shown, the base frame 1 is provided with several fixing bolts 49, and the cover plate 10 is slidably connected with a second limiting block 50. The end of the fixing bolt 49 is provided with a first limiting groove 51 that contacts the second limiting block 50, and one end of the fixing bolt 49 is provided with a fixing nut 52 that contacts the cover plate 10. A second spring 53 is provided between the fixing nut 52 and the base frame 1. When the cover plate 10 is initially fixed to the base frame 1 and the purification equipment is assembled, one end of the fixing bolt 49 is passed through the base frame 1 and the cover plate 10 in sequence, and then the second limiting block 50 is slid so that the second limiting block 50 slides into the first limiting groove. Inside the groove 51, the upper side of the second limiting block 50 contacts the first limiting groove 51, restricting the downward movement of the fixing bolt 49. Then, the second spring 53 and the fixing nut 52 are placed on the other end of the fixing bolt 49. By rotating the fixing nut 52, the second spring 53 is compressed. At the same time, the first limiting groove 51 contacts the second limiting block 50, and the resulting force pushes the cover plate 10 downward until the whole is in a locked state, thus fixing the water purification equipment on the base frame 1. At the same time, the first sealing ring 39, the second sealing ring 45 and the third sealing ring 46 are further compressed to improve the overall sealing performance of the water purification equipment.

[0038] Preferred, such as Figure 9As shown, one side of the second limiting block 50 is provided with a third inclined surface 54 that contacts the fixing bolt 49. A third spring 55 is provided between the second limiting block 50 and the cover plate 10. When the cover plate 10 is fixed again, the fixing bolt 49 is lifted, compressing the second spring 53, so that the end of the fixing bolt 49 passes through the cover plate 10 and contacts the third inclined surface 54 through the end of the fixing bolt 49. The resulting rebound force pushes the two second limiting blocks 50 to move to both sides and compresses the third spring 55, further squeezing the first sealing ring 39 and the third sealing ring 50. The second sealing ring 45 and the third sealing ring 46 improve the overall sealing performance of the water purification equipment. The second limiting block 50 moves to the first limiting groove 51 and, under the action of the rebound force of the third spring 55, pushes the second limiting block 50 into the first limiting groove 51. The resistance generated after the two come into contact achieves the fixation of the water purification equipment on the base frame 1. At the same time, the rebound force generated after the second spring 53 is compressed further squeezes the first sealing ring 39, the second sealing ring 45 and the third sealing ring 46, improving the overall sealing performance of the water purification equipment.

[0039] Preferred, such as Figure 9 , Figure 10 and Figure 11As shown, the fixing bolt 49 is provided with a second limiting groove 56 that communicates with the first limiting groove 51. The second limiting groove 56 has fourth inclined surfaces 57 on both sides that contact the second limiting block 50. The fixing bolt 49 is provided with a guide rod 58. The base frame 1 is provided with a vertical groove 59 and a spiral groove 60 that communicates with the vertical groove 59. The guide rod 58 is slidably disposed in the vertical groove 59 and the spiral groove 60 in sequence. The top of the second limiting block 50 is provided with a fifth inclined surface 61 that contacts the first limiting groove 51. When it is necessary to release the cover plate 10 from the base frame 1, the fixing bolt 49 is pushed upwards, causing the guide rod 58 on the fixing bolt 49 to slide in the vertical groove 59. At the same time, the second limiting block 50 moves relative to the fixing bolt 49 until the second limiting block 50 enters the second limiting groove 56 from the first limiting groove 51. The guide rod 58 moves to the spiral groove 60. Then, the fixing bolt 49 is further moved upwards, through the guide rod 58... The screw 8 slides into contact with the spiral groove 60, causing the fixing bolt 49 to rotate on the base frame 1. It then contacts the second limiting block 50 through the fourth inclined surface 57 on both sides of the second limiting groove 56. The resulting force causes the two second limiting blocks 50 to move to both sides. Then, the force applied to the fixing bolt 49 is removed. The rebound force generated after the second spring 53 is compressed will cause the fixing nut 52 to move down quickly. Before the third spring 55 pushes the second limiting block 50 to reset, the first limiting groove 51 contacts the fifth inclined surface 61 on the upper side of the second limiting block 50. The resulting force pushes the two second limiting blocks 50 to move to both sides again, allowing the fixing bolt 49 to pass smoothly through the limiting blocks, thereby releasing the fixing of the cover plate 10. This eliminates the need to tighten the bolt for a long time, further improving the efficiency of disassembling the purification equipment and shortening the time required to replace the filter membrane and clean the tank of residual pollutants and flocculents. This meets the actual needs of the laboratory to quickly carry out testing and quickly optimize the process.

[0040] Example 1 This invention provides a groundwater sedimentation ultrafiltration treatment device for laboratory testing, such as... Figures 1-4As shown, when testing the groundwater purification process in the laboratory, the sleeve 19 is first placed between the fine filter tank 3 and the effluent tank 2. The two ends of the sleeve 19 are inserted into the first concave ring 17 and the second concave ring 18 respectively. Through the sliding contact between the first concave ring 17 and the second concave ring 18 and the sleeve 19, the sleeve 19 is positioned between the fine filter tank 3 and the effluent tank 2, restricting its free movement between them, thus achieving a preliminary connection between the fine filter tank 3 and the effluent tank 2. Then... Place the outlet tank 2 on the base frame 1, then stack the coarse filter tank 4 on the fine filter tank 3, and finally slide the cover plate 10 on the base frame 1 so that the cover plate 10 contacts the top of the coarse filter tank 4, thereby restricting the relative movement of the coarse filter tank 4, the fine filter tank 3, the sleeve 19 and the outlet tank 2, realizing the assembly of the purification device. It is not necessary to use bolts to connect the coarse filter tank 4, the fine filter tank 3, the sleeve 19 and the outlet tank 2 one by one, thus simplifying the steps of assembling the groundwater purification equipment and improving the efficiency of the purification process for laboratory testing and treatment of groundwater. When groundwater needs purification, groundwater is first introduced into the inlet chamber 7 through the inlet pipe 9. By controlling the flow rate of the groundwater, it rises slowly within the inlet chamber 7. Larger particles in the groundwater settle at the bottom of the inlet chamber 7, thus achieving initial filtration. The groundwater that rises to the top of the first cylinder 5 gradually overflows and enters the mixing chamber 8. Flocculant is added into the mixing chamber 8 through the flocculant pipe 13. The stirring shaft 11 rotates on the cover plate 10, driving the stirring blades 12 to agitate the groundwater and flocculant, ensuring thorough mixing. Through the coagulation effect of the flocculant, the fine impurities in the groundwater condense into large flocs. Then, the groundwater and large flocs enter the sedimentation chamber 14 below through the through hole 16, where they are allowed to settle again, allowing the large flocs to settle to the bottom. The process involves secondary filtration of groundwater to further improve its purification effect. The groundwater then slowly rises to the top of the second cylinder 6, gradually overflowing and entering the outlet chamber 15. Finally, the groundwater passes through the filter chambers 20 of several sleeves 19, where ultrafiltration membranes 21 further filter the groundwater, trapping large molecular impurities, suspended solids, colloids, and other pollutants, thus improving the quality of the purified groundwater. The purified groundwater then enters the outlet tank 2 and is discharged through the outlet pipe 22. The purified groundwater is then tested by a testing agency to obtain the treatment results. By replacing different types of flocculants and ultrafiltration membranes 21, the purification effect under different process parameters is compared and analyzed to optimize the groundwater purification process. After purification, the cover plate 10 is moved upward to remove the restriction on the coarse filter tank 4, and the coarse filter tank 4, fine filter tank 3, sleeve 19 and effluent tank 2 are disassembled. The residual pollutants and flocculents in the coarse filter tank 4 and fine filter tank 3 are cleaned in a timely and thorough manner to avoid interference with subsequent experiments with different parameters, improve the accuracy of experimental data, and meet the actual needs of the laboratory to quickly carry out testing and optimize the process.

[0041] Example 2 Based on Example 1, such as Figures 2-8 As shown, the drive motor 25 drives the rotating shaft 24 to rotate, causing the turntable 23 to rotate on the cover plate 10. This drives several stirring shafts 11 and stirring blades 12 to move within the mixing chamber 8, further improving the mixing effect of groundwater and flocculant within the mixing chamber 8 and enhancing the groundwater purification process. Simultaneously, during the rotation of the turntable 23, the gear 26 at the end of the stirring shaft 11 meshes with the ring rack 27, driving several stirring shafts 11 to rotate on the cover plate 10, further mixing the groundwater and flocculant within the mixing chamber 8 and enhancing the groundwater purification process. Furthermore, there is no need to separately install a power unit to drive multiple stirring shafts 11 to rotate on the cover plate 10, reducing the space required for power unit installation and the manufacturing cost. In addition, when the drive motor 25 drives the turntable 23 to rotate on the cover plate 10, the filter basket 28 on the turntable 23 scoops up the impurities floating on the water tank 2, further removing impurities from the groundwater and improving the groundwater purification process. At the same time, the resistance generated when the filter basket 28 comes into contact with the groundwater further pushes the slider 30 to slide in the groove 29, restricting the filter basket 28 on the turntable 23 and improving the stability of the overall structure. Furthermore, there is no need to set up an additional power unit to drive the filter basket 28 to rotate on the cover plate 10, reducing the space required for power unit installation and the cost required for manufacturing.

[0042] Example 3 Based on Example 1, such as Figure 9 , Figure 10 and Figure 11As shown, when the cover plate 10 is initially fixed to the base frame 1 to assemble the purification equipment, one end of the fixing bolt 49 passes through the base frame 1 and the cover plate 10 in sequence. The end of the fixing bolt 49 contacts the third inclined surface 54, and the resulting rebound force pushes the two second limiting blocks 50 to move to both sides. Then, the fixing bolt 49 is moved upward, so that the second limiting blocks 50 move to the first limiting groove 51. Under the action of the rebound force of the third spring 55, the second limiting groove 56 slides into the first limiting groove 51. The upper side of the second limiting block 50 contacts the first limiting groove 51. The first limiting groove 51 contacts the second limiting bolt 49, restricting its downward movement. Then, the second spring 53 and the fixing nut 52 are placed on the other end of the fixing bolt 49. By rotating the fixing nut 52, the second spring 53 is compressed. At the same time, the first limiting groove 51 contacts the second limiting block 50, and the resulting force pushes the cover plate 10 downward until the whole is locked, thus fixing the water purification equipment on the base frame 1. At the same time, the first sealing ring 39, the second sealing ring 45 and the third sealing ring 46 are further compressed to improve the overall sealing performance of the water purification equipment. When it is necessary to release the cover plate 10 from the base frame 1, push the fixing bolt 49 upward to make the guide rod 58 on the fixing bolt 49 slide in the vertical groove 59. At the same time, the second limiting block 50 moves relative to the fixing bolt 49 until the second limiting block 50 enters the second limiting groove 56 from the first limiting groove 51. The guide rod 58 moves to the spiral groove 60. Then, move the fixing bolt 49 upward further. Through the sliding contact between the guide rod 58 and the spiral groove 60, the fixing bolt 49 rotates on the base frame 1 and contacts the second limiting block 50 through the fourth inclined surface 57 on both sides of the second limiting groove 56. The resulting force causes the two second limiting blocks 50 to move to both sides. Then, remove... The force applied by the pin to the fixing bolt 49, and the rebound force generated by the compression of the second spring 53, will drive the fixing nut 52 to move down quickly. Before the third spring 55 pushes the second limit block 50 to reset, the first limit groove 51 will contact the fifth inclined surface 61 provided on the upper side of the second limit block 50. The resulting component force will push the two second limit blocks 50 to move to both sides again, so that the fixing bolt 49 can pass through the limit block smoothly, thereby releasing the fixing of the cover plate 10. There is no need to tighten the bolt for a long time, which further improves the efficiency of disassembling the purification equipment, shortens the time required to replace the filter membrane, clean the tank of residual pollutants and flocculents, and meets the actual needs of the laboratory to quickly carry out testing and quickly optimize the process. When the cover plate 10 is fixed again, the fixing bolt 49 is lifted, compressing the second spring 53, so that the end of the fixing bolt 49 passes through the cover plate 10 and contacts the third inclined surface 54. The resulting rebound force pushes the two second limiting blocks 50 to move to both sides and compresses the third spring 55, further squeezing the first sealing ring 39, the second sealing ring 45 and the third sealing ring 46, improving the overall sealing performance of the water purification equipment. Until the second limiting block 50 moves to the first limiting groove 51, and under the action of the rebound force of the third spring 55, the second limiting block 50 is pushed into the first limiting groove 51. The resistance generated after the two come into contact achieves the fixing of the water purification equipment on the base frame 1. At the same time, the rebound force generated after the second spring 53 is compressed further squeezes the first sealing ring 39, the second sealing ring 45 and the third sealing ring 46, improving the overall sealing performance of the water purification equipment.

Claims

1. A groundwater sedimentation ultrafiltration treatment device for laboratory testing, comprising a base frame (1), an outlet tank (2), a fine filter tank (3), and a coarse filter tank (4) arranged from bottom to top on the base frame (1), characterized in that: Both the coarse filter tank (4) and the fine filter tank (3) have open tops. The coarse filter tank (4) and the fine filter tank (3) are respectively provided with a first cylindrical body (5) and a second cylindrical body (6). The first cylindrical body (5) divides the coarse filter tank (4) into an inlet chamber (7) and a mixing chamber (8). The coarse filter tank (4) is provided with an inlet pipe (9) connected to the inlet chamber (7). The top of the base frame (1) is slidably connected to a cover plate (10) that contacts the coarse filter tank (4). A stirring shaft (11) is rotatably connected to the cover plate (10). The stirring shaft (11) is provided with stirring blades (12) that cooperate with the mixing chamber (8). The coarse filter tank (4) is provided with a flocculant pipe (13) connected to the mixing chamber (8). The second cylindrical body (6) divides the fine filter tank into an inlet chamber (7) and a mixing chamber (8). The tank (3) is divided into a sedimentation chamber (14) and an outlet chamber (15). The bottom of the coarse filter tank (4) is provided with several through holes (16) that connect the mixing chamber (8) and the sedimentation chamber (14). The bottom of the fine filter tank (3) and the top of the outlet tank (2) are respectively provided with several first concave rings (17) and second concave rings (18). A sleeve (19) is provided between the first concave rings (17) and the second concave rings (18). The two ends of the sleeve (19) are in sliding contact with the first concave rings (17) and the second concave rings (18). The sleeve (19) is provided with a filter chamber (20) that is connected to the fine filter tank (3) and the outlet tank (2). The filter chamber (20) is provided with an ultrafiltration membrane (21). It also includes an outlet pipe (22) that is connected to the outlet tank (2).

2. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 1, characterized in that: There are multiple stirring shafts (11) and stirring blades (12), and a turntable (23) is rotatably connected to the cover plate (10). Multiple stirring shafts (11) are rotatably arranged on the turntable (23).

3. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 2, characterized in that: The cover plate (10) is provided with a rotating shaft (24) connected to the turntable (23), and also includes a drive motor (25) provided on the cover plate (10). The movable end of the drive motor (25) is connected to the rotating shaft (24). The end of the stirring shaft (11) is provided with a gear (26). The coarse filter tank (4) is provided with an annular rack (27) that meshes with the gear (26).

4. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 2, characterized in that: The turntable (23) is provided with a filter basket (28) for use with the water tank (2). The turntable (23) is provided with a slide groove (29). The top of the filter basket (28) is provided with a slider (30) that is slidably connected to the slide groove (29). The slider (30) is rotatably connected with a first roller (31) and a second roller (32) that are in contact with both sides of the turntable (23). The turntable (23) is slidably connected with a first limiting block (33). The first limiting block (33) is provided with a first inclined surface (34) and a second inclined surface (35) that are in contact with the first roller (31) on both sides. A first spring (36) is provided between the first limiting block (33) and the turntable (23).

5. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 1, characterized in that: The bottom of the coarse filter tank (4) is provided with a positioning ring (37), the top of the fine filter tank (3) is provided with a positioning groove (38) that slides in contact with the positioning ring (37), a first sealing ring (39) is provided between the positioning ring (37) and the fine filter tank (3), and a conical groove (40) that contacts the first sealing ring (39) is provided on the positioning ring (37).

6. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 1, characterized in that: The sleeve (19) has a first groove (41) and a second groove (42) at both ends, respectively. The first groove (41) and the second groove (42) are respectively provided with a coarse pore filter screen (43) and a fine pore filter screen (44). The sleeve (19) is provided with a second sealing ring (45) and a third sealing ring (46) between its two ends and the fine filter tank (3) and the water outlet tank (2), respectively. The ultrafiltration membrane (21) is spirally arranged.

7. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 1, characterized in that: The top ends of the first cylinder (5) and the second cylinder (6) are respectively provided with a first overflow port (47) and a second overflow port (48).

8. The groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 1, characterized in that: The base frame (1) is provided with a number of fixing bolts (49), and the cover plate (10) is slidably connected with a second limiting block (50). The end of the fixing bolt (49) is provided with a first limiting groove (51) that contacts the second limiting block (50). One end of the fixing bolt (49) is provided with a fixing nut (52) that contacts the cover plate (10). A second spring (53) is provided between the fixing nut (52) and the base frame (1).

9. A groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 8, characterized in that: The second limiting block (50) has a third inclined surface (54) on one side that contacts the fixing bolt (49), and a third spring (55) is provided between the second limiting block (50) and the cover plate (10).

10. A groundwater sedimentation ultrafiltration treatment device for laboratory testing according to claim 8, characterized in that: The fixing bolt (49) is provided with a second limiting groove (56) that communicates with the first limiting groove (51). The second limiting groove (56) is provided with a fourth inclined surface (57) that contacts the second limiting block (50) on both sides. The fixing bolt (49) is provided with a guide rod (58). The base frame (1) is provided with a vertical groove (59) and a spiral groove (60) that communicates with the vertical groove (59). The guide rod (58) is slidably arranged in the vertical groove (59) and the spiral groove (60) in sequence. The top of the second limiting block (50) is provided with a fifth inclined surface (61) that contacts the first limiting groove (51).

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