A urine filtering and extracting device

Abstract

The application is suitable for the technical field of urine separation, and provides a urine filtering and extracting device, which comprises detachably connected upper cover and filter shell, the upper cover is sealed and buckled on the top of the filter shell, and the bottom of the filter shell is fixedly installed with a supporting leg frame; the supporting leg frame is fixedly installed with a liquid collecting tank below the filter shell, the top of the liquid collecting tank is detachably installed with a top cover, the top cover and the filter shell are connected in communication through a liquid guide pipe, and the liquid guide pipe is detachably connected with the top cover. The urine filtering and extracting device provided by the scheme utilizes a mechanical pressurizing structure composed of a lifting screw rod and a piston plate to form a controllable positive pressure in the filter shell, significantly accelerates the speed of urine penetrating through the filter material, solves the problem of low natural flow efficiency, the vertex one-way opening and closing mechanism is automatically opened at the vertex of the piston plate and automatically closed when descending, realizes continuous operation of one-time liquid injection and sealed pressurization, simplifies the process and prevents backflow.

Description

Technical Field

[0001] This invention belongs to the field of urine separation technology, and particularly relates to a urine filtration and extraction device. Background Technology

[0002] The urine collection process introduces a certain amount of impurities, which may precipitate during subsequent processing, reducing the cleanliness of the finished product. Therefore, the urine must be filtered during use to ensure it contains as few impurities as possible.

[0003] Because urine filtration requires the use of filter media, and filter media usually have limited water permeability to ensure filtration accuracy, urine separates slowly when passing through the filter media, and the filtration efficiency is low when relying on natural flow. Summary of the Invention

[0004] This invention provides a urine filtration and extraction device, which aims to solve the problem of slow urine filtration speed currently found in the background art.

[0005] To solve the above problems, the present invention provides a urine filtration and extraction device, comprising: a detachably connected upper cover and a filter shell, wherein the upper cover is sealed and fastened to the top of the filter shell, and a support frame is fixedly installed at the bottom of the filter shell; a collection tank located below the filter shell is fixedly installed on the support frame, and a top cover is detachably installed on the top of the collection tank; the top cover and the filter shell are connected by a liquid guide pipe, and the liquid guide pipe is detachably connected to the top cover; a drain pipe is fixedly connected to the bottom of the collection tank; a supporting filter screen is fixedly installed inside the filter shell, and a filter screen is laid on the supporting filter screen. The filter media is used for urine filtration. An inlet is provided at the top of the upper housing. A lifting screw is rotatably mounted on the top of the upper housing, with its top end extending outside the upper housing and its bottom end extending above the filter media. A piston plate is slidably mounted inside the upper housing. The lifting screw is threaded through the piston plate, driving the piston plate to rise and fall, pressurizing the urine so that it passes through the filter media and supporting filter screen. The piston plate is equipped with a one-way opening and closing mechanism at its apex, located directly below the inlet, so that the piston plate opens when it rises to its apex to allow urine to enter the upper housing, and closes when it descends.

[0006] Preferably, the apex one-way opening and closing mechanism includes an assembly hole on the piston plate, located directly below the inlet. A threaded ring is threaded into the assembly hole, and an outer guide bucket is fixedly installed on the top of the threaded ring. When the piston plate rises to the apex, the top of the outer guide bucket fits tightly against the inner wall of the top of the upper cover, guiding the urine entering through the inlet into the threaded ring. An inner guide bucket is fixedly installed inside the outer guide bucket, and multiple return springs are fixedly installed at the bottom of the inner guide bucket. The bottoms of the multiple return springs are fixedly installed with the same connecting ring, which slides within the threaded ring. Inside, a filter ring is fixedly installed at the bottom of the connecting ring for preliminary filtration of urine. An airtight disc is fixedly installed at the bottom of the filter ring for sealing the threaded ring. When the piston plate rises to its highest point, the filter ring and the airtight disc extend outside the threaded ring to guide urine into the upper cover. When the piston plate descends, the filter ring and the airtight disc retract into the threaded ring. A support rod is fixedly installed inside the inlet. An abutment rod is fixedly installed at the bottom of the support rod. When the piston plate rises to its highest point, the bottom end of the abutment rod abuts against the top of the airtight disc, so that the filter ring and the airtight disc extend outside the threaded ring.

[0007] Preferably, the top opening of the outer guide bucket is the same size as the opening of the liquid inlet and their positions correspond, and the bottom opening of the outer guide bucket is the same size as the inner diameter of the threaded ring and their positions correspond.

[0008] Preferably, each of the plurality of reset springs is covered with a rubber sleeve, the top end of which is fixedly connected to the bottom of the inner guide bucket, and the bottom end is fixedly connected to the bottom of the connecting ring.

[0009] Preferably, multiple lifting rings are fixedly installed on the upper cover, and multiple screwing operation grooves are opened at the bottom of the threaded ring for adjusting the installation depth of the threaded ring in the assembly hole.

[0010] Preferably, the bottom of the upper cover is provided with a sealing groove, and the top of the filter shell is fixedly installed with a sealing connection frame. The sealing connection frame is inserted into the sealing groove, and the upper cover and the filter shell are connected by bolts.

[0011] Preferably, a motor and a control box are fixedly installed on the upper cover. The motor and the control box are connected. A pulley is fixedly sleeved on both the output shaft of the motor and the lifting screw. The same synchronous belt is sleeved on the two pulleys so that the motor drives the lifting screw to rotate, thereby controlling the lifting of the piston plate.

[0012] Preferably, two liquid guiding plates are fixedly installed on the bottom inner wall of the filter shell. The two liquid guiding plates are inclined and used to collect urine at the inlet of the liquid guiding tube.

[0013] Preferably, the top of the upper cover is fixedly installed with a liquid inlet hopper and a support plate. The liquid inlet hopper is correspondingly arranged with the liquid inlet. The top of the liquid inlet hopper is hinged with a hopper cover. The top of the hopper cover is fixedly installed with a magnetic block. The support plate is fixedly installed with a magnet. The magnet corresponds to the magnetic block so that when the hopper cover is opened, the magnetic block is attracted to the magnet. The top of the upper cover is provided with a pressure balance port for balancing the pressure when the piston plate slides.

[0014] Preferably, a liquid pump is installed on the drain pipe, and an online pH meter and a three-way solenoid valve are also installed on the drain pipe. The online pH meter is located between the drain end of the liquid pump and the three-way solenoid valve. The online pH meter is connected to a pH display instrument by a wire, and the three-way solenoid valve has a qualified discharge port and a defective discharge port.

[0015] Compared with related technologies, the urine filtration and extraction device provided by the present invention has the following advantages:

[0016] Compared with existing technologies, the urine filtration and extraction device provided by this solution utilizes a mechanical pressurization structure composed of a lifting screw and a piston plate to form a controllable positive pressure inside the filter shell, which significantly accelerates the speed at which urine passes through the filter material and solves the problem of low efficiency of natural flow. The unidirectional opening and closing mechanism at the top automatically opens at the top of the piston plate and automatically closes when it moves downward, realizing continuous operation of one-time liquid injection and sealing pressurization, simplifying the process and preventing backflow. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural diagram of a urine filtration and extraction device provided by the present invention;

[0018] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in the figure;

[0019] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure on the other side of the part shown;

[0020] Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure;

[0021] Figure 5 This is a schematic diagram of the main cross-sectional structure of a urine filtration and extraction device provided by the present invention;

[0022] Figure 6 for Figure 5 An enlarged structural diagram of section C shown in the figure;

[0023] Figure 7 for Figure 5 An enlarged structural diagram of part D shown in the figure;

[0024] Figure 8 for Figure 7 An enlarged structural diagram of part E shown in the figure;

[0025] Figure 9 for Figure 5 An enlarged structural diagram of part F shown in the figure;

[0026] Figure 10 for Figure 9 An enlarged structural diagram of part G shown in the figure;

[0027] Figure 11 for Figure 5 An enlarged structural diagram of section H shown in the figure;

[0028] Figure 12 This is a side cross-sectional view of a urine filtration and extraction device provided by the present invention;

[0029] Figure 13 for Figure 12 An enlarged structural diagram of part I shown in the figure;

[0030] Figure 14 A top-view three-dimensional structural diagram of a unidirectional opening and closing mechanism at the apex;

[0031] Figure 15 A schematic diagram of the three-dimensional structure of the unidirectional opening and closing mechanism at the apex, viewed from below.

[0032] Figure 16 This is a top-view three-dimensional structural diagram of the filter housing.

[0033] Figure 17 This is a bottom-view three-dimensional structural diagram of the filter housing.

[0034] Reference numerals: 1. Upper cover; 2. Filter housing; 3. Support leg; 4. Collection tank; 5. Top cover; 6. Liquid guide pipe; 7. Drain pipe; 8. Supporting filter screen; 9. Filter media; 10. Liquid inlet; 11. Lifting screw; 12. Piston plate; 13. Assembly hole; 14. Threaded ring; 15. Outer guide hopper; 16. Inner guide hopper; 17. Return spring; 18. Connecting ring; 19. Filter ring; 20. Airtight disc; 21. Support rod; 22. Abutment rod; 23. Rubber sleeve; 24. Twisting operation groove; 25. Sealing slot; 26. Sealing connection frame; 27. Motor; 28. Pulley 1; 29. ​​Synchronous belt 1; 30. Control box; 31. Liquid guide plate; 32. Liquid inlet hopper; 33. Hopper cover; 34. Magnetic block; 35. Support plate; 36. Magnet; 37. Air pressure balance port; 38. 39. Liquid pump; 40. Online pH meter; 41. Three-way solenoid valve; 42. pH display; 43. Qualified discharge port; 44. Inferior discharge port; 45. Support guide bar; 46. Driven guide rod; 47. Rack; 48. Shaft bracket; 49. Main shaft; 50. Gear; 51. Storage box; 52. Rubber isolation belt; 53. Pusher plate; 54. Threaded cylinder; 55. Threaded column; 56. Belt pulley two; 57. Synchronous belt two; 58. Booster box; 59. Drive screw; 60. Piston plate; 61. Countershaft; 62. Bevel gear; 63. Belt pulley three; 64. Synchronous belt three; 65. Air guide tube; 66. Air passage; 67. Receiving cavity; 68. Exhaust port; 69. Block; 70. Holding spring; 71. Pipe support; 72. Suction tube; 73. Pressure balance hole; 74. Through hole. Detailed Implementation

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] This invention provides a urine filtration and extraction device, such as... Figure 1-17As shown, the urine filtration and extraction device includes: a detachably connected upper cover 1 and a filter shell 2. The upper cover 1 is sealed and fastened to the top of the filter shell 2, and a support frame 3 is fixedly installed at the bottom of the filter shell 2. A collection tank 4 located below the filter shell 2 is fixedly installed on the support frame 3. A top cover 5 is detachably installed on the top of the collection tank 4. The top cover 5 and the filter shell 2 are connected by a liquid guide pipe 6, which is detachably connected to the top cover 5. A drain pipe 7 is fixedly connected to the bottom of the collection tank 4. A supporting filter screen 8 is fixedly installed inside the filter shell 2, and filter media 9 is laid on the supporting filter screen 8 for filtering urine. The top of the upper cover 1 has a liquid inlet 10. A lifting screw 11 is rotatably mounted on the top of the upper cover 1. The top end of the lifting screw 11 extends outside the upper cover 1, and the bottom end extends above the filter material 9. A piston plate 12 is slidably mounted inside the upper cover 1. The lifting screw 11 is threaded through the piston plate 12 and is used to drive the piston plate 12 to rise and fall, thereby pressurizing the urine so that the urine passes through the filter material 9 and the supporting filter screen 8. The piston plate 12 is provided with a apex one-way opening and closing mechanism. The apex one-way opening and closing mechanism is located directly below the liquid inlet 10 so that the piston plate 12 opens when it rises to the apex to allow urine to enter the upper cover 1, and closes when it descends.

[0037] In this embodiment, the method of use is as follows: The filter media 9 is laid on the supporting filter screen 8, and the upper cover 1 is sealed and fastened to the top of the filter shell 2; the lifting screw 11 is rotated to raise the piston plate 12 to its highest point, and the one-way opening and closing mechanism at the highest point automatically opens, allowing the raw urine to be injected into the upper cover 1 through the inlet 10; after the injection is completed, the lifting screw 11 is rotated in the opposite direction, the piston plate 12 descends, the one-way opening and closing mechanism closes, and the piston plate 12 applies positive pressure to the urine, forcing the liquid to pass through the filter media 9, the supporting filter screen 8, and the liquid guide pipe 6 in sequence before entering the collection tank 4; after filtration, the drain pipe 7 is opened to collect the filtered urine. The top cover 5, the liquid guide pipe 6, and the upper cover 1 are all removable, facilitating the replacement of the filter media 9 and thorough cleaning.

[0038] This solution utilizes a mechanical pressurization structure consisting of a lifting screw 11 and a piston plate 12 to create a controllable positive pressure inside the filter housing 2, significantly accelerating the speed at which urine permeates through the filter material 9 and solving the problem of low efficiency in natural flow. The separate design of the support filter screen 8 and filter material 9 ensures filtration accuracy while facilitating quick replacement and avoiding cross-contamination. The unidirectional opening and closing mechanism at the apex of the piston plate 12 automatically opens at the apex and closes automatically when descending, enabling continuous operation of one-time liquid injection and sealing pressurization, simplifying the process and preventing backflow. The detachable connection between the liquid guide tube 6 and the top cover 5, along with the openable drain tube 7, facilitates cleaning and sterilization, meeting cleanliness requirements.

[0039] In a further preferred embodiment of the present invention, the apex one-way opening and closing mechanism includes an assembly hole 13 formed on the piston plate 12, the assembly hole 13 being located directly below the inlet 10, a threaded ring 14 being threadedly installed inside the assembly hole 13, and an outer guide bucket 15 being fixedly installed on the top of the threaded ring 14. When the piston plate 12 rises to the apex, the top of the outer guide bucket 15 is tightly fitted against the top inner wall of the upper cover 1, for guiding the urine entering through the inlet 10 into the threaded ring 14. An inner guide bucket 16 is fixedly installed inside the outer guide bucket 15, and a plurality of return springs 17 are fixedly installed at the bottom of the inner guide bucket 16. The bottom of the plurality of return springs 17 is fixedly installed with the same connecting ring 18, and the connecting ring 18 slides on the threaded ring. Inside the upper cover 14, a filter ring 19 is fixedly installed at the bottom of the connecting ring 18 for preliminary filtration of urine. An airtight disc 20 is fixedly installed at the bottom of the filter ring 19 for sealing the threaded ring 14. When the piston plate 12 rises to its highest point, the filter ring 19 and the airtight disc 20 extend out of the threaded ring 14 to guide urine into the upper cover 1. When the piston plate 12 descends, the filter ring 19 and the airtight disc 20 retract into the threaded ring 14. A support rod 21 is fixedly installed inside the inlet 10. An abutment rod 22 is fixedly installed at the bottom of the support rod 21. When the piston plate 12 rises to its highest point, the bottom end of the abutment rod 22 abuts against the top of the airtight disc 20, so that the filter ring 19 and the airtight disc 20 extend out of the threaded ring 14.

[0040] In this embodiment, the apex unidirectional opening and closing mechanism integrates three functions—automatic opening and closing, coarse filtration, and sealing—during the entire movement of the piston plate 12. When the piston plate 12 reaches its apex, the top surface of the outer guide bucket 15 adheres tightly to the inner wall of the top of the upper cover 1, and the contact rod 22 presses down on the airtight disc 20, causing the filter ring 19 and the airtight disc 20 to overcome the resistance of the return spring 17 and extend out of the threaded ring 14. Urine flows into the interior of the upper cover 1 after preliminary filtration through the outer guide bucket 15, the inner guide bucket 16, and the filter ring 19 from the inlet 10. After the liquid is injected, the lifting screw 11 is rotated to lower the piston plate 12, and the return spring 17 immediately pulls the connecting ring 18 back to its original position. The airtight disc 20 then closes the threaded ring 14 again, achieving automatic switching between unidirectional flow and sealing.

[0041] The filter ring 19 is integrated into the piston plate 12 via a detachable threaded ring 14, achieving "one-in, two-filter" operation. At the apex, coarse filtration is performed first, reducing the load on the filter media 9; during descent, immediate sealing ensures airtightness. The linkage between the abutment rod 22 and the return spring 17 requires no additional drive, ensuring reliability. The outer guide hopper 15 facilitates liquid introduction, while the inner guide hopper 16 facilitates the installation of the return spring 17 and the hoisting of lower components.

[0042] The threaded connection between the threaded ring 14 and the mounting hole 13 allows for quick replacement of the filter ring 19, facilitating cleaning or replacement with different precision specifications. The airtight disc 20 is embedded within the threaded ring 14 in its retracted state, occupying minimal space and not affecting the sealing stroke of the piston plate 12. The overall apex one-way opening and closing mechanism is an independent module that can be directly screwed into or out of the piston plate 12 for convenient maintenance.

[0043] In a further preferred embodiment of the present invention, the top opening of the outer guide bucket 15 is equal in size to the opening of the liquid inlet 10 and their positions correspond, and the bottom opening of the outer guide bucket 15 is equal in size to the inner diameter of the threaded ring 14 and their positions correspond.

[0044] In this embodiment, when the piston plate 12 rises to its highest point, the top opening of the outer guide bucket 15 is perfectly aligned with the opening of the inlet 10 and the sizes are equal, forming a seamless straight channel; at the same time, the bottom opening of the outer guide bucket 15 is also aligned with the inner diameter of the threaded ring 14 and the diameter is equal, so that after the urine enters from the inlet 10, it flows in a straight line along the inner wall of the outer guide bucket 15 into the threaded ring 14, realizing rapid introduction with zero deviation and zero splashing.

[0045] In a further preferred embodiment of the present invention, a rubber sleeve 23 is provided on the outside of each of the plurality of reset springs 17, the top end of the rubber sleeve 23 is fixedly connected to the bottom of the inner guide bucket 16, and the bottom end is fixedly connected to the bottom of the connecting ring 18.

[0046] In this embodiment, when the piston plate 12 moves upward to the top, the return spring 17 is stretched, and the rubber sleeve 23 is stretched axially accordingly; when the piston plate 12 moves downward, the rubber sleeve 23 is simultaneously retracted during the contraction of the return spring 17, always covering the entire length of the spring to form a sealed sleeve.

[0047] In a further preferred embodiment of the present invention, a plurality of lifting rings are fixedly installed on the upper cover 1, and a plurality of screwing operation grooves 24 are provided at the bottom of the threaded ring 14 for adjusting the installation depth of the threaded ring 14 in the assembly hole 13.

[0048] In this embodiment, after the upper cover 1 is lifted as a whole using the lifting ring, the operator uses a tool to insert into the screwing operation groove 24 at the bottom of the threaded ring 14 and rotates to adjust the screwing depth of the threaded ring 14 in the assembly hole 13, thereby changing the axial position of the apex one-way opening and closing mechanism; after adjustment, the upper cover 1 can be lowered to re-fasten, completing the quick setting, and also facilitating the cleaning of the inside of the upper cover 1 and the replacement of the filter material 9.

[0049] The screw-operated groove 24 allows for fine-tuning of the threaded ring 14 without removing the piston plate 12 or additional positioning clamps, which can be done by one person. By changing the installation depth of the threaded ring 14, the extension length of the filter ring 19 and the triggering timing of the abutment rod 22 can be precisely controlled.

[0050] In a further preferred embodiment of the present invention, a sealing groove 25 is provided at the bottom of the upper cover 1, and a sealing connecting frame 26 is fixedly installed at the top of the filter shell 2. The sealing connecting frame 26 is inserted into the sealing groove 25, and the upper cover 1 and the filter shell 2 are connected by bolts.

[0051] In this embodiment, the upper cover 1 is aligned with the filter shell 2 and placed vertically downwards. The sealing connection frame 26 is then inserted into the sealing slot 25 to form radial positioning. Subsequently, bolts are passed through the corresponding holes of the upper cover 1 and the filter shell 2 and tightened to complete the sealing and locking. When disassembling, it is only necessary to loosen the bolts and lift the upper cover 1 vertically to quickly separate it.

[0052] The interlocking structure of the sealing connection frame 26 and the sealing groove 25 provides a double sealing interface, which significantly improves the pressure-resistant sealing performance between the upper cover 1 and the filter shell 2, and prevents liquid leakage during pressurized filtration; the bolt connection method ensures sufficient locking force.

[0053] In a further preferred embodiment of the present invention, a motor 27 and a control box 30 are fixedly installed on the upper cover 1. The motor 27 and the control box 30 are connected. A pulley 28 is fixedly sleeved on the output shaft of the motor 27 and the lifting screw 11. The same synchronous belt 29 is sleeved on the two pulleys 28 so that the motor 27 drives the lifting screw 11 to rotate, thereby controlling the piston plate 12 to rise and fall.

[0054] In this embodiment, the control box 30 starts the motor 27. The pulley 28 on the output shaft of the motor 27 drives the lifting screw 11 to rotate synchronously through the synchronous belt 29, thereby driving the piston plate 12 to rise and fall smoothly in the upper cover 1. When the piston plate 12 rises to the top, the one-way opening and closing mechanism at the top automatically opens, and urine is injected through the inlet 10. After the injection is completed, the motor 27 reverses, and the piston plate 12 descends and is pressurized to complete the filtration process.

[0055] In a further preferred embodiment of the present invention, two liquid guiding plates 31 are fixedly installed on the bottom inner wall of the filter shell 2. The two liquid guiding plates 31 are inclined and used to collect urine to the inlet of the liquid guiding tube 6.

[0056] In this embodiment, the urine filtered by the filter material 9 and the supporting filter screen 8 first falls to the bottom of the filter shell 2. Two inclined liquid guide plates 31 guide the liquid to the center, so that it naturally converges to the inlet of the liquid guide pipe 6, and then enters the collection tank 4 by gravity or subsequent negative pressure.

[0057] The inclined liquid guide plate 31 forms a continuous flow surface, which improves the liquid collection rate; at the same time, it reduces the residence time of urine in the shell, reduces the risk of secondary pollution and crystal deposition, and ensures the cleanliness of the filtered liquid.

[0058] In a further preferred embodiment of the present invention, a liquid inlet 32 ​​and a support plate 35 are fixedly installed on the top of the upper cover 1. The liquid inlet 32 ​​is correspondingly arranged with the liquid inlet 10. A lid 33 is hingedly installed on the top of the liquid inlet 32. A magnetic block 34 is fixedly installed on the top of the lid 33. A magnet 36 is fixedly installed on the support plate 35. The magnet 36 corresponds to the magnetic block 34 so that when the lid 33 is opened, the magnetic block 34 is attracted to the magnet 36. A pressure balance port 37 is opened on the top of the upper cover 1 for balancing the pressure when the piston plate 12 slides.

[0059] In this embodiment, when the lid 33 is opened, the magnetic block 34 immediately attaches to the magnet 36 on the support plate 35, keeping the lid 33 open; the raw urine is poured into the inlet hopper 32 and enters the upper cover 1 through the inlet 10. During the lifting and lowering of the piston plate 12, the air pressure balance port 37 is connected to the outside in real time to automatically balance the air pressure inside and outside the shell, ensuring that the piston plate 12 slides smoothly.

[0060] The magnetic lid 33 can be opened securely without additional support, preventing accidental fall and splashing; the liquid inlet 32 ​​enlarges the liquid inlet area, reducing the required pouring speed and minimizing foam and splashing; the air pressure balance port 37 avoids negative or positive pressure resistance when the piston plate 12 moves, improving lifting efficiency and motor 27 load stability.

[0061] In a further preferred embodiment of the present invention, a liquid pump 38 is installed on the drain pipe 7, and an online pH meter 39 and a three-way solenoid valve 40 are installed on the drain pipe 7. The online pH meter 39 is located between the drain end of the liquid pump 38 and the three-way solenoid valve 40. The online pH meter 39 is connected to a pH display instrument 41 by a wire. The three-way solenoid valve 40 has a qualified discharge port 42 and a defective discharge port 43.

[0062] In this embodiment, after the liquid pump 38 is started, the filtered urine flows through the drain pipe 7 sequentially through the pH online detector 39 and the three-way solenoid valve 40. The pH online detector 39 measures the pH value in real time and displays it on the pH display instrument 41. When the value is within the set qualified range, the three-way solenoid valve 40 opens the qualified discharge port 42, and the urine enters the subsequent process. If the pH value deviates from the set range, the three-way solenoid valve 40 immediately switches to the defective discharge port 43 to collect the abnormal liquid separately, realizing unattended online sorting.

[0063] The pH online meter 39 and the three-way solenoid valve 40 are integrated at the discharge end, which can complete the quality judgment simultaneously during the delivery of the liquid pump 38, avoiding the time lag and contamination risk caused by offline sampling; the pH display 41 provides visual values, which facilitates process traceability and parameter optimization and improves batch consistency.

[0064] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments:

[0065] In another embodiment of the present invention, a support guide bar 44 is fixedly installed inside the air pressure balance port 37, and a driven guide rod 45 is slidably installed on the support guide bar 44. The bottom end of the driven guide rod 45 is fixedly connected to the top of the piston plate 12, so that when the piston plate 12 moves up and down, it drives the driven guide rod 45 to slide along the support guide bar 44. The top end of the driven guide rod 45 is located outside the upper cover 1 and a rack 46 is fixedly installed. A shaft bracket 47 is fixedly installed on the top of the upper cover 1, and a main shaft 48 is rotatably installed on the shaft bracket 47. A gear 49 is fixedly sleeved on the main shaft 48, so that when the rack 46 slides, it meshes with the gear 49, driving the main shaft 48 to rotate. Storage boxes 50 are fixedly installed on opposite sides of the filter shell 2. Each of the two storage boxes 50 contains a rubber isolation strip 51. The rubber isolation strip 51 slides through the inner wall of the corresponding side of the filter shell 2. A sliding rack 46 is installed inside the filter shell 2. Two liquid-pushing plates 52 slide between two liquid-guiding plates 31 to collect urine into the liquid-guiding tube 6. The two liquid-pushing plates 52 are fixedly connected to two rubber isolation strips 51, so that the sliding of the liquid-pushing plates 52 drives the rubber isolation strips 51 to extend and retract. Threaded cylinders 53 are rotatably installed on both sides of the filter shell 2 located in the storage box 50. Threaded posts 54 are threadedly installed inside the two threaded cylinders 53. The two threaded posts 54 slide through the inner wall of the corresponding side of the filter shell 2 and are fixedly connected to the corresponding liquid-pushing plates 52, so that the rotation of the threaded cylinders 53 drives the threaded posts 54 to slide, thereby pushing the liquid-pushing plates 52 to slide. Pulleys 55 are fixedly sleeved on both threaded cylinders 53 and the main shaft 48. The same synchronous belt 56 is sleeved on the two pulleys 55 on the threaded cylinders 53 and the main shaft 48, so that the main shaft 48 drives the two threaded cylinders 53 to rotate synchronously.

[0066] In this embodiment, when the piston plate 12 rises and falls, the driven guide rod 45 slides synchronously along the support guide bar 44. When the rack 46 meshes with the gear 49, the rack 46 drives the gear 49 and the main shaft 48 to rotate. The main shaft 48 drives the two threaded cylinders 53 to rotate simultaneously through the synchronous belt 56. The threaded cylinders 53 convert the rotational motion into the linear displacement of the threaded column 54, so that the two pusher plates 52 slide towards or away from each other along the liquid guide plate 31. When the pusher plates 52 move, they pull or push the rubber isolation strip 51 to extend and retract within the storage box 50, completing the sealing and opening of the cavity, and at the same time quickly gathering the residual urine to the inlet of the liquid guide tube 6.

[0067] Using the lifting and lowering of the piston plate 12 as the sole power source, the synchronous reciprocating motion of the two liquid-pushing plates 52 is achieved through a four-stage transmission via rack 46, gear 49, synchronous belt 56, and threaded cylinder 53, without the need for additional power. The rubber isolation strip 51 forms a dynamic seal on the outside of the liquid-pushing plates 52 to prevent liquid from entering the collection box 50 and avoid contamination and crystal accumulation. The scraping action of the liquid-pushing plates 52 significantly reduces liquid accumulation at the bottom, improves the liquid collection rate, and shortens the batch interval.

[0068] In another embodiment of the present invention, a pressure box 57 is fixedly installed on one side of the upper cover 1. A drive screw 58 is rotatably installed on the top inner wall of the pressure box 57. A piston plate 59 is slidably installed inside the pressure box 57. The drive screw 58 is threaded through the piston plate 59 and is used to drive the piston plate 59 to rise and fall. A secondary shaft 60 is rotatably installed on the shaft bracket 47. A bevel gear 61 is fixedly sleeved on the top end of both the secondary shaft 60 and the drive screw 58. The two bevel gears 61 mesh with each other. A pulley 6 is fixedly sleeved on both the main shaft 48 and the secondary shaft 60. 2. The two pulleys 62 are fitted with the same synchronous belt 63, so that the main shaft 48 drives the auxiliary shaft 60 to rotate synchronously, thereby causing the piston plate 59 to slide. The bottom of the booster box 57 is fixedly connected to the air guide pipe 64 for discharging compressed gas. The exhaust end of the air guide pipe 64 extends to be rotatably connected to the top end of the lifting screw 11 for introducing gas. The lifting screw 11 has an air passage 65 for receiving gas. The lifting screw 11 has a receiving cavity 66 located at the bottom end of the air passage 65. The bottom end of the lifting screw 11 has a cavity 66 that is connected to the air passage 65. An exhaust port 67, connected to the inner wall of the bottom of the receiving cavity 66, is used to discharge air into the upper cover 1, thereby pressurizing the upper cover 1 in conjunction with the piston plate 12. A blocking block 68 is slidably installed inside the receiving cavity 66. A retaining spring 69 is provided between the bottom inner wall of the receiving cavity 66 and the bottom of the blocking block 68, so that when gas enters through the air passage 65, it pushes the blocking block 68 down. A through hole 73 is provided on the inner wall of the receiving cavity 66. The air inlet end of the through hole 73 is connected to the upper side of the receiving cavity 66, and the exhaust end is connected to the lower side of the receiving cavity 66. The blocking block 68 is located in the receiving cavity. The air inlet of the air passage 65 and the through hole 73 is blocked on the top inner wall of the cavity 66. When the gas enters through the air passage 65, it pushes the block 68 to offset the air inlet of the through hole 73, so that the air enters the lower side of the cavity 66 through the exhaust end of the through hole 73 and is discharged into the upper cover 1 through the exhaust hole 67. The bottom of the booster box 57 is fixedly connected to the suction pipe 71. The suction pipe 71 is equipped with a one-way valve for sucking in gas when the piston plate 59 rises. The top of the booster box 57 is provided with a pressure balance hole 72 for balancing the pressure in the booster box 57 when the piston plate 59 slides.

[0069] In this embodiment, when the main shaft 48 rotates, it drives the secondary shaft 60 via the synchronous belt 63. The secondary shaft 60 drives the drive screw 58 in the booster box 57 to rotate synchronously through a pair of meshing bevel gears 61, causing the piston plate 59 to reciprocate up and down. When the piston plate 59 moves down, it compresses air and sends it into the air passage 65 inside the lifting screw 11 through the air guide pipe 64. The compressed gas pushes the block block 68 to overcome the retaining spring 69 and move down, offsetting the air inlet end of the guide hole 73. The air continues to enter the lower side of the receiving cavity 66 through the guide hole 73 and is finally injected into the upper cover 1 through the exhaust hole 67 to perform secondary pressurization of the urine. When the piston plate 59 moves up, the suction pipe 71 controlled by the one-way valve automatically replenishes air, and the air pressure balance hole 72 maintains the pressure balance inside and outside the booster box 57.

[0070] Using the original power of the piston plate 12 as the source, mechanical energy is converted into compressed air through multi-stage transmission. Secondary air pressure can be superimposed in the upper cover 1 without the need for an additional air source, which significantly improves the filtration speed. The block 68 and the retaining spring 69 form a one-way air pressure valve, which only opens under the set pressure to prevent backflow and ensure stable and safe airflow. The air passage 65, the guide hole 73 and the block 68 are all built into the lifting screw 11, with no exposed pipelines, and the structure is compact.

[0071] In another embodiment of the present invention, a pipe support 70 is fixedly installed on the top of the upper cover 1, and the pipe support 70 is fixedly connected to the air guide pipe 64.

[0072] In this embodiment, after the air guide tube 64 is wired along the top of the upper cover 1, it is directly snapped into the fixing position of the pipe support 70 to complete the quick positioning. The pipe support 70 forms a rigid support for the air guide tube 64 to prevent vibration and shaking caused by high-speed compressed air, avoid loosening of joints or wear of air pipes, and improve the airtightness and operational stability of the system.

[0073] In summary, compared with related technologies, this device utilizes a mechanical pressurization structure composed of a lifting screw 11 and a piston plate 12 to create a controllable positive pressure inside the filter housing 2, significantly accelerating the speed at which urine permeates the filter material 9, solving the problem of low efficiency in natural flow. The unidirectional opening and closing mechanism at the apex of the piston plate 12 automatically opens at the apex and automatically closes when it descends, realizing continuous operation of one-time liquid injection and sealing pressurization, simplifying the process and preventing backflow.

[0074] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A urine filtration and extraction device, characterized in that, include: The upper cover and filter housing are detachably connected. The upper cover is sealed and fastened to the top of the filter housing, and the bottom of the filter housing is fixedly equipped with a support leg. A liquid collection tank located below the filter housing is fixedly installed on the support frame. A top cover is detachably installed on the top of the liquid collection tank. The top cover and the filter housing are connected by a liquid guide pipe. The liquid guide pipe is detachably connected to the top cover. A drain pipe is fixedly connected to the bottom of the liquid collection tank. A support filter screen is fixedly installed inside the filter housing, and filter media is laid on the support filter screen for filtering urine. The top of the upper cover is provided with a liquid inlet. A lifting screw is rotatably installed on the top of the upper cover. The top end of the lifting screw extends to the outside of the upper cover and the bottom end extends to the top of the filter material. A piston plate is slidably installed inside the upper cover. The lifting screw is threaded through the piston plate and is used to drive the piston plate to rise and fall, and to pressurize the urine so that the urine passes through the filter material and the support filter screen. The piston plate is provided with a apex one-way opening and closing mechanism, which is located directly below the liquid inlet so that the piston plate opens when it rises to the apex to allow urine to be introduced into the upper cover, and closes when it descends. The apex one-way opening and closing mechanism includes an assembly hole on the piston plate, located directly below the inlet. A threaded ring is threaded into the assembly hole, and an outer guide bucket is fixedly mounted on the top of the threaded ring. When the piston plate rises to its apex, the top of the outer guide bucket fits tightly against the inner top wall of the upper cover, guiding urine entering through the inlet into the threaded ring. An inner guide bucket is fixedly mounted inside the outer guide bucket, and multiple return springs are fixedly mounted on the bottom of the inner guide bucket. The bottoms of the multiple return springs are fixedly mounted with the same connecting ring, which slides within the threaded ring. A filter ring is fixedly installed at the bottom of the connecting ring for preliminary filtration of urine. An airtight disc is fixedly installed at the bottom of the filter ring for sealing the threaded ring. When the piston plate rises to its highest point, the filter ring and the airtight disc extend outside the threaded ring to guide urine into the upper cover. When the piston plate descends, the filter ring and the airtight disc retract into the threaded ring. A support rod is fixedly installed inside the inlet. An abutment rod is fixedly installed at the bottom of the support rod. When the piston plate rises to its highest point, the bottom end of the abutment rod abuts against the top of the airtight disc, so that the filter ring and the airtight disc extend outside the threaded ring.

2. The urine filtration and extraction device as described in claim 1, characterized in that, The top opening of the outer guide bucket is the same size as the opening of the liquid inlet and their positions correspond. The bottom opening of the outer guide bucket is the same size as the inner diameter of the threaded ring and their positions correspond.

3. The urine filtration and extraction device as described in claim 1, characterized in that, Each of the multiple reset springs is covered with a rubber sleeve. The top end of the rubber sleeve is fixedly connected to the bottom of the inner guide bucket, and the bottom end is fixedly connected to the bottom of the connecting ring.

4. The urine filtration and extraction device as described in claim 1, characterized in that, Multiple lifting rings are fixedly installed on the upper cover, and multiple screwing operation grooves are opened at the bottom of the threaded ring to adjust the installation depth of the threaded ring in the assembly hole.

5. The urine filtration and extraction device as described in claim 1, characterized in that, The bottom of the upper cover is provided with a sealing groove, and the top of the filter shell is fixedly installed with a sealing connection frame. The sealing connection frame is inserted into the sealing groove, and the upper cover and the filter shell are connected by bolts.

6. The urine filtration and extraction device as described in claim 1, characterized in that, A motor and a control box are fixedly installed on the upper cover. The motor and the control box are connected. A pulley is fixedly sleeved on the output shaft of the motor and the lifting screw. The same synchronous belt is sleeved on the two pulleys so that the motor drives the lifting screw to rotate, thereby controlling the lifting of the piston plate.

7. The urine filtration and extraction device as described in claim 1, characterized in that, Two liquid guiding plates are fixedly installed on the bottom inner wall of the filter shell. The two liquid guiding plates are inclined and used to collect urine to the inlet of the liquid guiding tube.

8. The urine filtration and extraction device as described in claim 1, characterized in that, The top of the upper cover is fixedly equipped with a liquid inlet hopper and a support plate. The liquid inlet hopper is arranged corresponding to the liquid inlet. The top of the liquid inlet hopper is hinged with a hopper cover. The top of the hopper cover is fixedly equipped with a magnetic block. The support plate is fixedly equipped with a magnet. The magnet corresponds to the magnetic block so that when the hopper cover is opened, the magnetic block is attracted to the magnet. The top of the upper cover is provided with a pressure balance port for balancing the pressure when the piston plate slides.

9. The urine filtration and extraction device as described in claim 1, characterized in that, A liquid pump is installed on the drain pipe, along with an online pH meter and a three-way solenoid valve. The online pH meter is located between the drain end of the liquid pump and the three-way solenoid valve. The online pH meter is connected to a pH display device via wires. The three-way solenoid valve has a qualified discharge port and a substandard discharge port.

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