Reverse osmosis treatment equipment and method for removing heavy metals in sewage

Abstract

The invention belongs to the technical field of sewage treatment, particularly relates to reverse osmosis treatment equipment and a reverse osmosis treatment method for removing heavy metals in sewage, and aims to solve the problems of poor impurity treatment effect, easiness in blockage of a filter screen, poor online replacement effect of a reverse osmosis membrane and the like during sewage treatment in the prior art. The reverse osmosis treatment equipment comprises a base, the top of the base is fixedly provided with a filter box and a purification box, the filter box is used for preliminarily filtering and purifying sewage input from the outside, and the purification box is used for performing reverse osmosis treatment on the preliminarily filtered sewage. The detachable design is matched with a double-filter-element system, replacement of reverse osmosis filter elements can be completed under the non-stop condition, a liquid inlet is intelligently regulated and controlled through a communication assembly, and an automatic cleaning and impurity collecting mechanism is matched, so that blockage can be effectively prevented, the maintenance cost is reduced, and the reliability and durability of equipment are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a reverse osmosis treatment device and method for removing heavy metals in sewage. Background Art

[0002] With the acceleration of industrialization and urbanization, the amount of sewage discharged is increasing, which contains a large amount of heavy metal ions, such as lead, cadmium, chromium, etc., posing a serious threat to the environment and human health. Traditional sewage treatment methods have limited effects in dealing with heavy metal pollution and are difficult to meet increasingly stringent environmental protection requirements. Reverse osmosis technology, as an advanced membrane separation technology, has been widely used in the field of water treatment. It drives water molecules through a semipermeable membrane under high pressure, while pollutants such as heavy metal ions are retained on one side of the membrane, thereby achieving sewage purification and heavy metal removal. However, the existing reverse osmosis treatment equipment still has the following problems when in use:

[0003] After long-term sewage treatment, impurity particles will be adsorbed on the reverse osmosis membrane of traditional reverse osmosis treatment equipment, causing membrane pollution and blockage. At this time, the reverse osmosis membrane needs to be replaced. However, when replacing the reverse osmosis membrane, the existing equipment inevitably needs to be shut down, which will affect the sewage treatment work and is not conducive to improving the sewage treatment efficiency.

[0004] When treating sewage containing a large amount of suspended matter and impurities, the sewage needs to be initially filtered to prevent a large amount of impurities from directly contacting the reverse osmosis membrane. However, the existing devices are not effective enough in treating impurities filtered out of the sewage, which can easily cause clogging of the filter screen and affect the efficiency of subsequent sewage treatment.

[0005] In view of the above problems, the present invention document proposes a reverse osmosis treatment device and method for removing heavy metals in sewage. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art in sewage treatment, such as poor treatment effect on impurities, easy clogging of the filter screen, and poor online replacement effect of the reverse osmosis membrane, and to propose a reverse osmosis treatment equipment and method for removing heavy metals in sewage.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A reverse osmosis treatment device for removing heavy metals from sewage, comprising:

[0009] A base, a filter box and a purification box are fixedly installed on the top of the base, the filter box is used to perform preliminary filtration and purification on the sewage input from the outside, and the purification box is used to perform reverse osmosis treatment on the sewage after preliminary filtration;

[0010] The top of the filter box is fixedly connected with a water inlet pipe, which is used to input sewage. A filter cartridge is rotatably installed inside the filter box, one end of which rotates through one side of the filter box, and a plurality of filter holes are opened on the outer wall of the filter cartridge, and the plurality of filter holes are all located in the filter box. The interior of the filter cartridge is filled with an activated carbon adsorption filter element, which is used to adsorb and purify impurities in sewage;

[0011] Also included is a cleaning component, which is used to automatically clean the filter cartridge and collect filtered impurities;

[0012] The interior of the purification box is divided into three areas: a pressurized chamber and two water outlet chambers. The two water outlet chambers are located on one side of the pressurized chamber. One side of the two water outlet chambers is fixedly connected to a sewage outlet pipe for discharging the treated sewage. The tops of the two water outlet chambers are fixedly installed with purification cartridges. The interiors of the two purification cartridges are provided with reverse osmosis filter elements for completing the reverse osmosis purification of the sewage.

[0013] Also included are two groups of connecting components, which are used to achieve the connection and sealing of the two purification cartridges and the pressurized chamber;

[0014] It also includes a pressurizing component, which is used to push and pressurize the sewage in the pressurizing chamber to ensure a good reverse osmosis effect in the purification cartridge;

[0015] It also includes a water pump, which is fixedly installed on the top of the base. The water inlet of the water pump is connected to the inside of the filter box through a pipeline, and the water outlet of the water pump is connected to the inside of the pressurized chamber through a pipeline, so as to complete the transportation and transfer of sewage.

[0016] In one possible design, the cleaning assembly includes a V-shaped plate fixedly mounted on the inner wall of one side of the filter box, both ends of the V-shaped plate are sealingly and slidingly matched with the outer wall of the filter cartridge, the outer wall of the filter cartridge is fixedly sleeved with a gear ring, and the gear ring is located outside the filter box, and a gear is rotatably mounted on the outer wall of one side of the filter box, and the gear is meshed with the gear ring. A reduction motor is fixedly mounted on one side of the filter box through a bracket, and one end of the output shaft of the reduction motor is fixedly connected to the gear. The reduction motor is used to drive the filter cartridge to rotate slowly, and the V-shaped plate cooperates with the outer wall of the filter cartridge to scrape off impurities attached to the outer wall of the filter cartridge.

[0017] In a possible design, the cleaning component also includes an impurity collection box fixedly mounted on one side of the filter box, an impurity storage box is slidably arranged inside the impurity collection box, the impurity storage box passes through one side of the impurity collection box, the impurity storage box is used to collect impurities, one side of the impurity collection box is provided with a slag discharge hole, the slag discharge hole passes through one side of the filter box, the slag discharge hole cooperates with a V-shaped plate, the upper inclined plate of the V-shaped plate is provided with a plurality of filter holes, which are used to transport impurities to the slag discharge hole without affecting the passage of sewage, and the lower inclined plate of the V-shaped plate is used to transport the sewage leaked from the top to the filter cartridge again.

[0018] In a possible design, a limiting connecting tube is fixedly installed inside the two purification cartridges, and the limiting connecting tube is located at the bottom end of the purification cartridge, and is used to complete the connection between the purification cartridge and the water outlet chamber. The limiting connecting tube cooperates with the reverse osmosis filter element, and is used to complete the limiting of the bottom end of the reverse osmosis filter element. A second end cap is fixedly installed on the top end of the reverse osmosis filter element, and a thread is provided on the inner wall of the purification cartridge near the top end. The second end cap is threadedly connected to the corresponding purification cartridge, and is used to complete the detachable installation of the reverse osmosis filter element.

[0019] In a possible design, the connecting component includes a fixing box fixedly mounted on one side of the purification cartridge, the fixing box being fixedly connected to one side of the purification box, an adjusting groove and a liquid inlet hole being provided inside the fixing box, the liquid inlet hole penetrating the adjusting groove, the liquid inlet hole being used to complete the connection between the pressurized chamber and the corresponding purification cartridge, a sealing plate being sealingly and slidingly connected to the inner wall of the adjusting groove, the sealing plate being used to complete the sealing of the liquid inlet hole, a connecting hole being provided inside the sealing plate, the connecting hole cooperating with the liquid inlet hole to complete the passage of sewage, a fixing plate being fixedly mounted on the bottom of the sealing plate, a spring being fixedly mounted on the bottom of the fixing plate, the other end of the spring being fixedly connected to the bottom inner wall of the adjusting groove, an abutting rod being fixedly mounted on the top of the sealing plate, the top end of the abutting rod slidingly penetrating the top of the fixing box and cooperating with the bottom of the second end cover, the sealing plate being used to achieve the sealing of the corresponding purification cartridge when the reverse osmosis filter element is disassembled.

[0020] In a possible design, the pressurizing assembly includes a pressurizing plate which is sealingly and slidably arranged on the inner wall of the pressurizing chamber, the pressurizing plate is located below the two liquid inlet holes, a plurality of through holes are opened inside the pressurizing plate, and movable covers are sealed in the plurality of through holes, the plurality of movable covers are hinged to the pressurizing plate, and the plurality of movable covers can only rotate in one direction to realize the unidirectional flow of sewage, a fixing rod is fixedly installed on the bottom of the pressurizing plate through a bracket, a connecting plate is slidingly sleeved on the outer wall of the fixing rod, a connecting shaft is fixedly installed on one end of the filter cartridge, one end of the connecting shaft rotates through the side where the filter box and the purification box are close to each other and a turntable is fixedly installed, the turntable is embedded in the inner wall of the pressurizing chamber and the turntable is rotatably connected to the inner wall of the pressurizing chamber, a fixing column is fixedly installed on one side of the turntable at a position deviating from the center of the circle, the fixing column is rotatably connected to the connecting plate, and the turntable is used to drive the pressurizing plate to continuously rise and fall, so as to complete the pushing and pressurizing of the sewage inside the pressurizing chamber.

[0021] In a possible design, one end of the filter cartridge is threadedly connected to a first end cap, and the first end cap is used to complete the sealing of the filter cartridge and facilitate the subsequent replacement of the activated carbon adsorption filter element.

[0022] In one possible design, two guide plates are fixedly installed on the top inner wall of the filter box, and the two guide plates are used to guide the input of sewage, wherein the guide plate away from the V-shaped plate is sealed and slidably matched with the outer wall of the filter cartridge to prevent sewage and impurities from falling to the side of the filter cartridge away from the V-shaped plate.

[0023] In a possible design, a drain pipe is fixedly passed through one side of the filter box and the pressurizing chamber, and valves are provided on the two drain pipes. The two drain pipes are used to discharge the sewage remaining in the filter box and the pressurizing chamber.

[0024] A method for using a reverse osmosis treatment device for removing heavy metals from sewage comprises the following steps:

[0025] S1. After the power is turned on, the reduction motor and the water pump start, and the sewage enters the filter box through the water inlet pipe. First, the filter cartridge performs preliminary filtration to remove large particles of impurities and debris. Then, the sewage passes through the activated carbon adsorption filter element in the filter cartridge to achieve deep filtration and adsorption purification. The treated sewage is stored at the bottom of the filter box;

[0026] S2. The filter cartridge rotates slowly under the drive of the reduction motor, and the impurities attached to the outer wall are scraped off by the V-shaped plate and directed to the slag discharge hole, where they are collected by the impurity storage box for easy regular cleaning;

[0027] S3, the water pump transports the filtered sewage to the pressurized chamber of the purification box. After the sewage is filled, it enters the two purification cylinders working in parallel through the liquid inlet hole; in the purification cylinder, the sewage is treated by the reverse osmosis filter element, and the purified water is collected in the water outlet chamber at the bottom and discharged through the sewage outlet pipe;

[0028] S4. A pressure plate and a turntable are arranged in the pressure chamber. The turntable rotates with the filter cartridge, and the pressure plate moves up and down through mechanical transmission. The pressure plate has a built-in movable cover, which automatically opens and closes with the water pressure, forming a piston effect, increasing the pressure of the sewage in the pressure chamber on the reverse osmosis filter element and improving the treatment efficiency.

[0029] S5. The system design allows the replacement of reverse osmosis filter elements without stopping the machine. When a single filter element is removed, the other filter element continues to work, and the connecting component automatically closes the corresponding purification cylinder to prevent sewage from flowing in. The connecting component controls the opening and closing of the liquid inlet hole through a spring and sealing plate mechanism to ensure the continuity and safety of the system during the filter element replacement process.

[0030] Beneficial effects:

[0031] In the present invention, the reverse osmosis treatment equipment for removing heavy metals from sewage can achieve efficient removal of heavy metal ions in sewage by pushing sewage through a reverse osmosis filter element, meet strict environmental emission standards, and utilize a pressurizing component to achieve different pressure differences between the inside and outside of the reverse osmosis filter element, thereby improving the reverse osmosis treatment efficiency of sewage and achieving a good treatment effect on sewage.

[0032] In the present invention, the reverse osmosis treatment equipment for removing heavy metals in sewage has a detachable design, which makes the replacement process of the reverse osmosis filter element more convenient and efficient, and through the mutual cooperation of two groups of reverse osmosis filter elements, it is not necessary to stop the machine when replacing the reverse osmosis filter element, thereby greatly reducing the sewage treatment interruption time caused by replacing the reverse osmosis filter element. This design not only improves the continuous operation capacity of the sewage treatment equipment, but also significantly improves the overall sewage treatment efficiency, ensuring the continuity and stability of sewage treatment;

[0033] In the present invention, the reverse osmosis treatment equipment for removing heavy metals in sewage can realize the unblocking and sealing of the corresponding liquid inlet through the connecting component when replacing the reverse osmosis filter element, and can automatically seal the corresponding purification cartridge without the need for the user to perform additional operations, which is simple to operate and is conducive to improving the maintenance efficiency of the device;

[0034] In the present invention, the reverse osmosis treatment equipment for removing heavy metals in sewage, by combining the design of the automatic cleaning component and the impurity collection box, uses a reduction motor to drive the filter cartridge to rotate slowly, cooperates with the V-shaped plate and the impurity collection box, can realize automatic cleaning of the outer wall of the filter cartridge and collection of impurities, which not only effectively prevents the accumulation of impurities on the outer wall of the filter cartridge and avoids the risk of filter cartridge clogging, but also improves the efficiency and effect of impurity treatment, and at the same time, reduces the cleaning and maintenance work caused by filter cartridge clogging, reduces the operating cost, and improves the reliability and durability of the overall equipment;

[0035] In the present invention, the reverse osmosis treatment equipment can enhance the treatment efficiency of sewage through the pressurized component, efficiently remove heavy metal components in sewage, and ensure that sewage discharge meets the standards. Its detachable design cooperates with the dual filter element system, and the reverse osmosis filter element can be replaced without stopping the machine, reducing downtime. The connected component intelligently controls the liquid inlet, simplifies the maintenance process, and cooperates with the automatic cleaning and impurity collection mechanism to effectively prevent blockage, reduce maintenance costs, enhance equipment reliability and durability, and comprehensively optimize sewage treatment efficiency and effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional structural schematic diagram of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0037] Figure 2 A schematic diagram of a three-dimensional structure from another perspective of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0038] Figure 3 A schematic diagram of a side cross-sectional structure of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0039] Figure 4 This is a schematic cross-sectional view of a filter box of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0040] Figure 5 This is a schematic cross-sectional view of a purification box of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of a pressurizing component of a reverse osmosis treatment device for removing heavy metals from sewage proposed by the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of the connected components of a reverse osmosis treatment device for removing heavy metals in sewage proposed by the present invention.

[0043] In the figure: 1. base; 2. filter box; 3. purification box; 4. water inlet pipe; 5. impurity collection box; 6. filter cartridge; 7. gear ring; 8. gear; 9. reduction motor; 10. water pump; 11. first end cover; 12. activated carbon adsorption filter element; 13. connecting shaft; 14. V-shaped plate; 15. slag discharge hole; 16. impurity storage box; 17. guide plate; 18. drain pipe; 19. pressurization chamber; 20. water outlet chamber ; 21. Purification cartridge; 22. Sewage outlet pipe; 23. Pressure plate; 24. Turntable; 25. Fixed column; 26. Movable cover; 27. Fixed rod; 28. Connecting plate; 29. ​​Limit connecting pipe; 30. Reverse osmosis filter element; 31. Second end cover; 32. Fixed box; 33. Adjusting slot; 34. Liquid inlet hole; 35. Sealing plate; 36. Connecting hole; 37. Fixed plate; 38. Spring; 39. Abutment rod. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Example 1

[0046] Reference Figure 1-7 A reverse osmosis treatment device includes: a base 1, a filter box 2, a purification box 3, a water inlet pipe 4, a filter cartridge 6, a cleaning component, a pressurizing component, two sets of connecting components, a purification cartridge 21, a reverse osmosis filter element 30 and a water pump 10 and other parts.

[0047] The base 1 serves as the supporting structure of the entire device, and a filter box 2 and a purification box 3 are fixedly installed on the top thereof. The filter box 2 is responsible for preliminary filtering and purification of the sewage input from the outside, while the purification box 3 further performs reverse osmosis treatment on the sewage after preliminary filtration;

[0048] The top of the filter box 2 is fixedly connected with a water inlet pipe 4 for introducing sewage to be treated. A filter cartridge 6 is rotatably installed inside the filter box 2. One end of the filter cartridge 6 rotates and penetrates one side of the filter box 2. A plurality of filter holes are provided on its outer wall. The plurality of filter holes are all located in the filter box 2 and are used to intercept and filter impurities in the sewage. The interior of the filter cartridge 6 is filled with an activated carbon adsorption filter element 12. The activated carbon adsorption filter element 12 can effectively adsorb impurities in the sewage, including some heavy metal ions.

[0049] The cleaning assembly includes a V-shaped plate 14, a gear ring 7, a gear 8, a reduction motor 9 and an impurity collection box 5; the V-shaped plate 14 is fixedly installed on the inner wall of one side of the filter box 2, and is sealed and slidably matched with the outer wall of the filter cartridge 6. Through the design of the inclined plates at both ends, impurities attached to the outer wall of the filter cartridge 6 can be scraped off when the filter cartridge 6 rotates; the gear ring 7 is fixedly sleeved on the outer wall of the filter cartridge 6, located outside the filter box 2, and meshed with the gear 8; the reduction motor 9 is fixedly installed on one side of the filter box 2 through a bracket, and its output shaft is fixedly connected to the gear 8 to drive the filter cartridge 6 to rotate slowly; the impurity collection box 5 is located on one side of the filter box 2, and an impurity storage box 16 is slidably arranged inside it for collecting scraped impurities. The impurity storage box 16 runs through one side of the impurity collection box 5 for easy regular cleaning; the slag discharge hole 15 is opened between the impurity collection box 5 and the filter box 2, and cooperates with the filter hole of the inclined plate above the V-shaped plate 14 to transport impurities to the impurity storage box 16.

[0050] The interior of the purification box 3 is divided into a pressurized chamber 19 and two water outlet chambers 20. The two water outlet chambers 20 are both located on one side of the pressurized chamber 19 and are each fixedly connected to a sewage outlet pipe 22 for discharging treated sewage. A purification cylinder 21 is fixedly installed on the top of each water outlet chamber 20. A reverse osmosis filter element 30 is arranged inside the purification cylinder 21 for completing the reverse osmosis purification of sewage. A limited connecting pipe 29 is fixedly installed inside the purification cylinder 21, located at the bottom end of the purification cylinder 21, connected to the water outlet chamber 20, and limits the bottom end of the reverse osmosis filter element 30. The top end of the reverse osmosis filter element 30 is threadedly connected to the inner wall of the purification cylinder 21 through the second end cover 31, so as to realize detachable installation and facilitate replacement and maintenance.

[0051] The design of the connecting component ensures flexible connection and closure between the purification cylinder 21 and the pressurized chamber 19; specifically, a fixing box 32 is fixedly installed on one side of the purification cylinder 21, and the fixing box 32 is fixedly connected to the side wall of the purification box 3. An adjusting groove 33 and a liquid inlet hole 34 are provided inside the fixing box 32. The liquid inlet hole 34 runs through the adjusting groove 33 and is used to establish communication between the pressurized chamber 19 and the corresponding purification cylinder 21. A sealing plate 35 is sealingly and slidably connected inside the adjusting groove 33. The sealing plate 35 can close the liquid inlet hole 34 when necessary. A connecting hole 36 is provided inside the sealing plate 35. The connecting hole 36 cooperates with the liquid inlet hole 34 to allow sewage to pass through when the sealing plate 35 is in the open position;

[0052] In order to control the switch of the sealing plate 35, a fixing plate 37 is fixedly connected to the bottom of the sealing plate 35, and the bottom of the fixing plate 37 is connected to the bottom inner wall of the adjusting groove 33 through a spring 38. In this way, when there is no external force, the spring 38 will push the sealing plate 35 to move upward, thereby closing the liquid inlet hole 34. At the same time, an abutment rod 39 is fixed to the top of the sealing plate 35, and the abutment rod 39 passes through the top of the fixing box 32 and cooperates with the bottom of the second end cover 31; when the reverse osmosis filter element 30 is installed and tightened into the purification cylinder 21, the second end cover 31 will press down the abutment rod 39, thereby pushing the sealing plate 35 to move downward, opening the liquid inlet hole 34 and the connecting hole 36, allowing sewage to flow into the purification cylinder 21; when the reverse osmosis filter element 30 needs to be removed, the second end cover 31 moves up, and the spring 38 pushes the sealing plate 35 back to its original position, closing the liquid inlet hole 34, thereby preventing sewage leakage.

[0053] The pressurizing component realizes the pushing and pressurizing of the sewage in the pressurizing chamber 19 through a mechanical structure; specifically, a pressurizing plate 23 is provided in a sealing and sliding manner on the inner wall of the pressurizing chamber 19, and the pressurizing plate 23 is located below the two liquid inlet holes 34. A plurality of through holes are provided inside the pressurizing plate 23, and a movable cover 26 is sealed in each through hole. These movable covers 26 are hinged to the pressurizing plate 23 and can only rotate in one direction, thereby realizing the unidirectional flow of sewage;

[0054] The bottom of the pressure plate 23 is fixedly connected to a fixing rod 27 through a bracket, and a connecting plate 28 is slidably sleeved on the outer wall of the fixing rod 27. A connecting shaft 13 is fixedly installed at one end of the filter cartridge 6. The connecting shaft 13 passes through the side walls of the filter box 2 and the purification box 3, and a rotating disk 24 is provided in a sealed rotation in the pressure chamber 19. The plane of the rotating disk 24 is flush with the inner wall plane of the pressure chamber 19. A fixing column 25 is fixed at a position deviating from the center of the rotating disk 24, and the fixing column 25 is rotatably connected to the connecting plate 28; when the filter cartridge 6 is rotated under the drive of the reduction motor 9, When the pressure plate 23 is lowered, the sewage below it will flow into the space above it in one direction through the movable cover 26. As the pressure plate 23 rises again, the sewage in the pressure chamber 19 is continuously pushed and pressurized, and finally enters the purification cylinder 21 through the liquid inlet hole 34 and the connecting hole 36 for reverse osmosis treatment. Since the internal and external pressures of the reverse osmosis filter element 30 are different at this time, the efficiency of sewage reverse osmosis treatment can be improved.

[0055] The present application can be used in the field of sewage treatment technology, and can also be used in other fields applicable to the present application.

[0056] Example 2

[0057] refer to Figure 2 , 4, based on the improvement of Example 1: a reverse osmosis treatment device for removing heavy metals from sewage, which is applied to the field of sewage treatment technology;

[0058] In the present embodiment, one end of the filter cartridge 6 is threadedly connected to a first end cap 11, which is not only used to close the filter cartridge 6, but also facilitates the subsequent replacement of the activated carbon adsorption filter element 12; when the activated carbon adsorption filter element 12 needs to be replaced, it is only necessary to unscrew the first end cap 11, and the old filter element can be taken out of the filter cartridge 6 and replaced with a new one. The operation is simple and convenient for device maintenance.

[0059] In this embodiment, two guide plates 17 are fixedly installed on the top inner wall of the filter box 2. The design of these two guide plates 17 cleverly realizes the input guidance of sewage; among them, the guide plate 17 away from the V-shaped plate 14 is sealed and slidably matched with the outer wall of the filter cartridge 6; when sewage enters from the top of the filter box 2, the two guide plates 17 can guide the sewage to flow along a specific path, ensuring that the sewage and impurities mainly flow to the side where the V-shaped plate 14 is located. Since the guide plate 17 away from the V-shaped plate 14 is sealed and slidably matched with the outer wall of the filter cartridge 6, this design effectively prevents sewage and impurities from falling directly to the side of the filter cartridge 6 away from the V-shaped plate 14, thereby avoiding the accumulation of impurities in the device and ensuring a better treatment effect on the impurities contained in the sewage.

[0060] In this embodiment, a drain pipe 18 is fixedly passed through one side of the filter box 2 and the pressurizing chamber 19, and valves are provided on the two drain pipes 18 for controlling drainage; the main function of the two drain pipes 18 is to discharge the residual sewage in the filter box 2 and the pressurizing chamber 19, so as to facilitate the cleaning and maintenance of the equipment; when the equipment stops running or needs to be cleaned, the valves on these drain pipes 18 can be opened to discharge the residual sewage, which can not only ensure the hygiene of the equipment, but also prevent the sewage from being retained in the equipment for a long time and causing corrosion or pollution to the equipment.

[0061] A method for using a reverse osmosis treatment device for removing heavy metals from sewage comprises the following steps:

[0062] S1. When in use, turn on the power, start the reduction motor 9 and the water pump 10, and then the user can input the sewage to be treated into the filter box 2 through the water inlet pipe 4; after the sewage enters the filter box 2, it will first be filtered through the filter cartridge 6, and then the sewage will pass through the activated carbon adsorption filter element 12 set in the filter cartridge 6, and the activated carbon adsorption filter element 12 will filter and adsorb and purify the sewage again. After treatment, the sewage will be stored at the bottom of the filter box 2, and then the water pump 10 will transport the sewage stored in the filter box 2 to the purification box 3 to complete the subsequent reverse osmosis treatment;

[0063] S2. When the sewage is filtered, the sundries and larger particles contained in it will be intercepted by the filter cartridge 6, and the filter cartridge 6 will slowly rotate under the drive of the reduction motor 9 and the transmission effect of the gear ring 7 and the gear 8. When the filter cartridge 6 rotates, the impurities remaining on its outer wall will be driven and moved to the V-shaped plate 14, and then the impurities will move along the inclined surface of the V-shaped plate 14, and finally fall into the slag discharge hole 15, and be collected by the impurity storage box 16; and when the filter cartridge 6 rotates, the V-shaped plate 14 can also scrape and clean the outer wall of the filter cartridge 6, so as to prevent the impurities from adhering to the outer wall of the filter cartridge 6 and affecting the sewage circulation effect of the filter cartridge 6; After using it for a period of time, the user can take out and clean the impurity storage box 16 to facilitate the treatment of impurities and avoid the accumulation of impurities inside the device, which may affect the treatment effect of sewage. The V-shaped structure of the V-shaped plate 14 and the filter hole design of the top inclined plate can ensure that the sewage flowing through the top of the V-shaped plate 14 will fall through the filter holes to the other inclined plate at the bottom, and the sewage will flow back into the filter cartridge 6 again through the inclined plate in the opposite direction, which can ensure a better treatment effect on the sewage. At the same time, the user can rotate and remove the first end cap 11 at one end of the filter cartridge 6, and at this time, the activated carbon adsorption filter element 12 inside the filter cartridge 6 can be taken out and replaced, which can ensure a good adsorption and purification effect on the sewage.

[0064] S3. After the preliminarily treated sewage is transported to the pressurized chamber 19 inside the purification box 3, the sewage will gradually fill the pressurized chamber 19 until the sewage can enter the two purification cylinders 21 through the corresponding liquid inlet holes 34. The sewage will pass through the reverse osmosis filter element 30 in the purification cylinder 21 to complete the reverse osmosis treatment. Finally, the treated sewage will fall into the water outlet chamber 20 at the bottom of the corresponding purification cylinder 21 and be discharged through the corresponding sewage outlet pipe 22.

[0065] S4. A pressure plate 23 and a turntable 24 are provided inside the pressure chamber 19. The turntable 24 is connected to the connecting shaft 13 and rotates synchronously with the rotation of the filter cartridge 6. When the turntable 24 rotates, it drives the pressure plate 23 to continuously rise and fall through the connection of the fixed column 25, the connecting plate 28 and the fixed rod 27. In addition, since a plurality of movable covers 26 are provided inside the pressure plate 23, when the pressure plate 23 descends, the movable covers 26 will open under the impact of the water flow to ensure the smooth descent of the pressure plate 23. When the pressure plate 23 rises, the movable covers 26 will close under the dual effects of gravity and the impact of the water flow. At this time, the entire pressure plate 23 can be used as a piston block, which will push and squeeze the sewage in the pressure chamber 19, thereby increasing the water pressure in the two purification cartridges 21, thereby improving the reverse osmosis treatment efficiency of the reverse osmosis filter element 30 and accelerating the sewage treatment speed.

[0066] S5. In normal use, the two purification cartridges 21 and the reverse osmosis filter cartridges 30 inside them can work at the same time to ensure a good efficiency in sewage treatment. When the reverse osmosis filter cartridge 30 needs to be disassembled for maintenance, the user can first disassemble one reverse osmosis filter cartridge 30, while the other reverse osmosis filter cartridge 30 can continue to work. After the reverse osmosis filter cartridge 30 is disassembled, the corresponding purification cartridge 21 will be sealed under the action of the connecting component until the reverse osmosis filter cartridge 30 is installed again. The connecting component will ensure the smooth flow of the liquid inlet 34 again, so that the device can complete the replacement of the two reverse osmosis filter cartridges 30 in sequence without stopping the machine, ensuring that the sewage treatment work will not be affected. The connecting component is During operation, the second end cover 31 will squeeze the abutment rod 39 and push the sealing plate 35 downward. At this time, the spring 38 is compressed, and the connecting hole 36 is aligned with the liquid inlet hole 34, which can ensure the normal passage of sewage; when the reverse osmosis filter element 30 is disassembled, the sealing plate 35 loses the restriction of the second end cover 31. At this time, under the action of the spring 38, the sealing plate 35 will drive the connecting hole 36 to move upward, and the connecting hole 36 is staggered with the liquid inlet hole 34. The sealing plate 35 will close the liquid inlet hole 34, thereby preventing sewage from entering the corresponding purification cylinder 21. Until the reverse osmosis filter element 30 is installed again, the second end cover 31 pushes the sealing plate 35 back to its original position again, and then the sewage can enter the purification cylinder 21 through the liquid inlet hole 34.

[0067] However, as is well known to those skilled in the art, the working principles and wiring methods of the reduction motor 9 and the water pump 10 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reverse osmosis treatment device for removing heavy metals from sewage, characterized in that: include: A base (1), a filter box (2) and a purification box (3) are fixedly mounted on the top of the base (1), the filter box (2) is used to perform preliminary filtration and purification on sewage input from the outside, and the purification box (3) is used to perform reverse osmosis treatment on the sewage after preliminary filtration; The top of the filter box (2) is fixedly connected to a water inlet pipe (4), the water inlet pipe (4) is used for inputting sewage, a filter cartridge (6) is rotatably installed inside the filter box (2), one end of the filter cartridge (6) is rotatably passed through one side of the filter box (2), a plurality of filter holes are formed on the outer wall of the filter cartridge (6), the plurality of filter holes are all located inside the filter box (2), the interior of the filter cartridge (6) is filled with an activated carbon adsorption filter element (12), the activated carbon adsorption filter element (12) is used for adsorbing and purifying impurities in the sewage; It also includes a cleaning component, which is used to automatically clean the filter cartridge (6) and collect filtered impurities; The interior of the purification box (3) is divided into three areas: a pressurizing chamber (19) and two water outlet chambers (20). The two water outlet chambers (20) are both located on one side of the pressurizing chamber (19). One side of the two water outlet chambers (20) is fixedly connected with a sewage outlet pipe (22) for discharging the treated sewage. The tops of the two water outlet chambers (20) are fixedly installed with purification cylinders (21). The interiors of the two purification cylinders (21) are both provided with reverse osmosis filter elements (30) for completing the reverse osmosis purification of the sewage. It also includes two groups of connecting components, which are used to achieve the connection and sealing between the two purification cartridges (21) and the pressurizing chamber (19); It also includes a pressurizing component, which is used to push and pressurize the sewage in the pressurizing chamber (19) to ensure a good reverse osmosis effect in the purification cartridge (21); It also includes a water pump (10), which is fixedly installed on the top of the base (1), and the water inlet of the water pump (10) is connected to the interior of the filter box (2) through a pipeline, and the water outlet of the water pump (10) is connected to the interior of the pressurized chamber (19) through a pipeline, so as to complete the transportation and transfer of sewage.

2. A reverse osmosis treatment device for removing heavy metals from sewage according to claim 1, characterized in that: The cleaning assembly comprises a V-shaped plate (14) fixedly mounted on the inner wall of one side of the filter box (2), both ends of the V-shaped plate (14) are sealingly slidably matched with the outer wall of the filter cartridge (6), the outer wall of the filter cartridge (6) is fixedly sleeved with a toothed ring (7), the toothed ring (7) is located outside the filter box (2), a gear (8) is rotatably mounted on the outer wall of one side of the filter box (2), the gear (8) is meshed with the toothed ring (7), a reduction motor (9) is fixedly mounted on one side of the filter box (2) through a bracket, one end of the output shaft of the reduction motor (9) is fixedly connected to the gear (8), the reduction motor (9) is used to drive the filter cartridge (6) to rotate slowly, the V-shaped plate (14) is matched with the outer wall of the filter cartridge (6), and is used to scrape off impurities attached to the outer wall of the filter cartridge (6).

3. A reverse osmosis treatment device for removing heavy metals from sewage according to claim 2, characterized in that: The cleaning assembly further comprises an impurity collection box (5) fixedly mounted on one side of the filter box (2); an impurity storage box (16) is slidably arranged inside the impurity collection box (5); the impurity storage box (16) penetrates one side of the impurity collection box (5); the impurity storage box (16) is used to collect impurities; a slag discharge hole (15) is provided on one side of the impurity collection box (5); the slag discharge hole (15) penetrates one side of the filter box (2); the slag discharge hole (15) cooperates with the V-shaped plate (14); a plurality of filter holes are provided on the upper inclined plate of the V-shaped plate (14) for conveying impurities to the slag discharge hole (15) without affecting the passage of sewage; and a lower inclined plate of the V-shaped plate (14) is used to convey sewage leaking from the upper side to the filter cartridge (6) again.

4. The reverse osmosis treatment equipment for removing heavy metals from sewage according to claim 1, characterized in that: A limit connecting pipe (29) is fixedly installed inside the two purification cylinders (21). The limit connecting pipe (29) is located at the bottom end of the purification cylinder (21) and is used to complete the communication between the purification cylinder (21) and the water outlet chamber (20). The limit connecting pipe (29) cooperates with the reverse osmosis filter element (30) and is used to complete the limit of the bottom end of the reverse osmosis filter element (30). A second end cover (31) is fixedly installed at the top end of the reverse osmosis filter element (30). The inner wall of the purification cylinder (21) is provided with a thread near the top end. The second end cover (31) is threadedly connected to the corresponding purification cylinder (21) and is used to complete the detachable installation of the reverse osmosis filter element (30).

5. A reverse osmosis treatment device for removing heavy metals from sewage according to claim 4, characterized in that: The connecting component comprises a fixing box (32) fixedly mounted on one side of the purification cylinder (21), the fixing box (32) being fixedly connected to one side of the purification box (3), an adjusting groove (33) and a liquid inlet hole (34) being provided inside the fixing box (32), the liquid inlet hole (34) penetrating the adjusting groove (33), the liquid inlet hole (34) being used to complete the connection between the pressurized chamber (19) and the corresponding purification cylinder (21), a sealing plate (35) being sealingly slidably connected to the inner wall of the adjusting groove (33), the sealing plate (35) being used to complete the sealing of the liquid inlet hole (34), a connecting hole (36) being provided inside the sealing plate (35), the connecting The hole (36) cooperates with the liquid inlet hole (34) to complete the passage of sewage. A fixing plate (37) is fixedly installed at the bottom of the sealing plate (35). A spring (38) is fixedly installed at the bottom of the fixing plate (37). The other end of the spring (38) is fixedly connected to the bottom inner wall of the adjustment groove (33). An abutment rod (39) is fixedly installed at the top of the sealing plate (35). The top end of the abutment rod (39) slides through the top of the fixing box (32) and cooperates with the bottom of the second end cover (31). The sealing plate (35) is used to achieve the closure of the corresponding purification cartridge (21) when the reverse osmosis filter element (30) is disassembled.

6. The reverse osmosis treatment equipment for removing heavy metals from sewage according to claim 5, characterized in that: The pressurizing assembly comprises a pressurizing plate (23) which is sealingly and slidably arranged on the inner wall of the pressurizing chamber (19); the pressurizing plate (23) is located below the two liquid inlet holes (34); a plurality of through holes are provided inside the pressurizing plate (23); movable covers (26) are sealedly arranged in the plurality of through holes; the plurality of movable covers (26) are hingedly connected to the pressurizing plate (23); the plurality of movable covers (26) can only rotate in one direction to realize the unidirectional flow of sewage; a fixing rod (27) is fixedly installed at the bottom of the pressurizing plate (23) through a bracket; a connecting plate (28) is slidingly sleeved on the outer wall of the fixing rod (27); A connecting shaft (13) is fixedly installed at one end of the filter cartridge (6), and one end of the connecting shaft (13) rotates through the side of the filter box (2) and the purification box (3) close to each other and is fixedly installed with a turntable (24), the turntable (24) is embedded in the inner wall of the pressurizing chamber (19) and the turntable (24) is rotatably connected to the inner wall of the pressurizing chamber (19), a fixing column (25) is fixedly installed at a position deviating from the center of the circle on one side of the turntable (24), and the fixing column (25) is rotatably connected to the connecting plate (28), and the turntable (24) is used to drive the pressurizing plate (23) to continuously rise and fall, so as to complete the pushing and pressurizing of the sewage inside the pressurizing chamber (19).

7. The reverse osmosis treatment equipment for removing heavy metals from sewage according to claim 1, characterized in that: One end of the filter cartridge (6) is threadedly connected to a first end cap (11), and the first end cap (11) is used to complete the sealing of the filter cartridge (6) and facilitate the subsequent replacement of the activated carbon adsorption filter element (12).

8. The reverse osmosis treatment equipment for removing heavy metals from sewage according to claim 3, characterized in that: Two guide plates (17) are fixedly mounted on the top inner wall of the filter box (2), and the two guide plates (17) are used to guide the input of sewage, wherein the guide plate (17) away from the V-shaped plate (14) is in sealing and sliding cooperation with the outer wall of the filter cartridge (6), so as to prevent sewage and impurities from falling onto the side of the filter cartridge (6) away from the V-shaped plate (14).

9. The reverse osmosis treatment equipment for removing heavy metals from sewage according to claim 1, characterized in that: A drainage pipe (18) is fixedly passed through one side of the filter box (2) and the pressurizing chamber (19), and valves are provided on the two drainage pipes (18). The two drainage pipes (18) are used to discharge the sewage remaining in the filter box (2) and the pressurizing chamber (19).

10. A method for using a reverse osmosis treatment device for removing heavy metals from sewage according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. After the power is turned on, the reduction motor (9) and the water pump (10) are started, and the sewage enters the filter box (2) through the water inlet pipe (4). The sewage is first filtered by the filter cartridge (6) to remove large particles of impurities and debris. Then, the sewage passes through the activated carbon adsorption filter element (12) in the filter cartridge (6) to achieve deep filtration and adsorption purification. The treated sewage is stored at the bottom of the filter box (2); S2, the filter cartridge (6) is driven by the reduction motor (9) to rotate slowly, and the impurities attached to the outer wall are scraped off by the V-shaped plate (14) and directed to the slag discharge hole (15), and collected by the impurity storage box (16), so as to facilitate regular cleaning; S3, the water pump (10) transports the filtered sewage to the pressurized chamber (19) of the purification box (3), and after the sewage is filled, it enters two purification cylinders (21) working in parallel through the liquid inlet hole (34); in the purification cylinder (21), the sewage is treated by the reverse osmosis filter element (30), and the purified water is collected in the bottom water outlet chamber (20) and discharged through the sewage outlet pipe (22); S4, a pressurizing plate (23) and a rotating disk (24) are arranged in the pressurizing chamber (19), the rotating disk (24) rotates with the filter cartridge (6), and the pressurizing plate (23) moves up and down through mechanical transmission; the pressurizing plate (23) has a built-in movable cover (26), which automatically opens and closes according to the water flow pressure, forming a piston effect, thereby increasing the pressure of the sewage in the pressurizing chamber (19) on the reverse osmosis filter element (30), and improving the treatment efficiency; S5. The system design allows the reverse osmosis filter element (30) to be replaced without stopping the system. When a single filter element is removed, the other filter element continues to work, and the connecting component automatically closes the corresponding purification cylinder (21) to prevent sewage from flowing in. The connecting component controls the opening and closing of the liquid inlet hole (34) through the spring (38) and the sealing plate (35) mechanism to ensure the continuity and safety of the system during the filter element replacement process.

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