A solar desalination treatment device and method

Abstract

The present invention relates to the technical field of seawater treatment. More specifically, it relates to a solar seawater desalination treatment device and method, which includes a pipe body composed of a filter pipe and a water inlet pipe. A multi-stage filtering unit and an integrated cleaning and slag removal unit for cleaning the multi-stage filtering unit and removing filter residues are arranged in the filter pipe. The integrated cleaning and slag removal unit includes a number of cleaning and slag removal components, a number of self-opening and closing slag discharge components, and a number of trigger components for triggering the self-opening and closing slag discharge components. During the process of cleaning the filter cylinder in this application, as the sealing scraping and pushing ring continuously moves to the right, not only the surface of the filter cylinder is scraped and cleaned, but also the filter residues in the filter holes on the left side of the sealing scraping and pushing ring are flushed out by the change of water pressure until the entire filter cylinder is cleaned. At the same time, the water filtering operation is maintained throughout the cleaning process. Thus, while realizing the automatic cleaning of the filter cylinder, it is not necessary to stop the water filtering operation, thereby improving the continuity and stability of seawater filtration.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater treatment, and more specifically, it relates to a solar seawater desalination treatment device and method. Background Art

[0002] Solar seawater desalination is a technology that uses solar energy as an energy source to convert seawater into potable fresh water. This technology has the advantages of environmental protection, sustainability, and low cost, and is particularly suitable for areas lacking traditional energy supply; the first step in solar seawater desalination treatment usually requires filtering seawater to remove larger particulate matters in the seawater, such as impurities like sand, algae, shell fragments, etc., to prevent these impurities from clogging or damaging subsequent treatment equipment, such as pumps, pipelines, membrane modules, etc.

[0003] Currently, in the first - step filtration process of seawater desalination treatment, as the seawater filtration continues, the filter screen of the filtration equipment is gradually covered by impurities in the seawater, resulting in a decrease in filtration efficiency. Therefore, it is necessary to clean the filter screen regularly. Currently, the methods for cleaning the filter screen generally include manual cleaning, back - flushing cleaning, and vibration cleaning. Among them, the back - flushing cleaning technology has a high degree of automation and is widely used. It flushes the filter cartridge through reverse water flow to wash out the filter residues to achieve the purpose of cleaning the filter screen.

[0004] However, the above - mentioned back - flushing cleaning method still has certain defects: 1. When the back - flushing flushes out the filter residues by reverse water flow through the filter cartridge, the reverse water flow will temporarily change the water flow direction, resulting in the inability of the filter cartridge to perform normal filtration operations for a short period of time. That is to say, during the back - flushing cleaning process, it is necessary to temporarily stop the seawater filtration operation.

[0005] 2. Currently, some back - flushing systems also solve the problem that filtration operations cannot be carried out during the back - flushing process by setting up a double - filtration channel. However, setting up a double - filtration channel also means that more filter cartridges and back - flushing devices need to be set up, and more space is required to install the filtration system. This not only increases the complexity of the equipment but also results in an increase in manufacturing, usage, and maintenance costs. Summary of the Invention

[0006] In order to solve the above - mentioned technical problems, the present invention provides a solar seawater desalination treatment device and method. The solar seawater desalination treatment device includes a pipe body composed of a filter pipe and a water inlet pipe. A multi - stage filtration unit and an integrated cleaning and slag - removing unit for cleaning the multi - stage filtration unit and removing filter residues are arranged in the filter pipe. The integrated cleaning and slag - removing unit includes a number of cleaning and slag - removing components, a number of self - opening and closing slag - discharging components, and a number of triggering components for triggering the self - opening and closing slag - discharging components.

[0007] The multi-stage filtering unit includes several fixed slag retaining rings fixedly installed on the inner wall of the filter pipe and arranged at equal intervals, and a filter cylinder fixedly installed on the left side of the fixed slag retaining rings. The filtering mesh number of the filter cylinder increases sequentially from left to right. A water diversion cone is fixedly installed on the left side of the filter cylinder. The cleaning and slag removal assembly includes a sealing scraping and pushing ring slidably connected to the inner wall of the filter pipe and concentric with the filter cylinder. The inner wall of the sealing scraping and pushing ring has the same diameter as the outer wall of the filter cylinder.

[0008] Further, the cleaning and slag removal assembly further includes a first sealing ring fixedly installed inside the sealing scraping and pushing ring. A sealing layer is formed between the first sealing ring and the outer wall of the filter cylinder. Several sealing scraping and pushing rings and several fixed slag retaining rings are arranged alternately. The leftmost fixed slag retaining ring is located to the right of the leftmost sealing scraping and pushing ring.

[0009] Further, the self-opening and closing slag discharging assembly includes a slag discharging port opened at the bottom of the filter pipe and located on the left side of the fixed slag retaining ring. An installation groove is opened on the inner wall of the right side of the slag discharging port. Several strong springs are fixedly installed on the inner wall of the right side of the installation groove. The left ends of several strong springs are jointly installed with a slag receiving plate. A sliding groove is opened on the right side of the slag receiving plate. The filter pipe is slidably connected with the sliding groove. A limiting rod is fixedly installed on the right side of the slag receiving plate. The strong spring is sleeved outside the corresponding limiting rod. A limiting groove slidably matched with the limiting rod is opened on the inner wall of the right side of the installation groove.

[0010] Further, the triggering assembly includes an opening groove opened on the left side of the slag receiving plate. A circular groove is opened at the bottom of the opening groove. A reset spring is fixedly installed at the bottom of the circular groove. The top end of the reset spring is fixedly installed with an L-shaped buckle. The L-shaped buckle is located on the right side of the corresponding sealing scraping and pushing ring. A wedge-shaped rod is fixedly installed on the right side of the sealing scraping and pushing ring. An L-shaped clamping groove is opened on the inner wall of the left side of the slag discharging port. The two ends of the L-shaped buckle are respectively matched with the wedge-shaped rod and the L-shaped clamping groove. A second sealing ring is fixedly installed on the left side of the slag receiving plate and above the opening groove. A sealing layer is formed between the second sealing ring and the slag discharging port.

[0011] Further, a first wedge-shaped surface facing left is opened at the top end of the vertical section of the L-shaped buckle and is matched with the wedge-shaped rod. A second wedge-shaped surface and a clamping surface are respectively opened at the left end and the top end of the horizontal section of the L-shaped buckle. When the L-shaped buckle is clamped and matched with the L-shaped clamping groove, the second wedge-shaped surface is located in the vertical section of the L-shaped clamping groove, and the clamping surface is in contact with the inner top wall of the horizontal section of the L-shaped clamping groove.

[0012] Further, two symmetrically arranged push rods are fixedly installed on the right side of the sealing scraping and pushing ring. Two symmetrically arranged ear plates matched with the corresponding push rods are fixedly installed on the top of the slag receiving plate. The part of the inner wall of the sealing scraping and pushing ring to the left of the first sealing ring has a conical structure with the small diameter end close to the corresponding fixed slag retaining ring.

[0013] Furthermore, a cylinder is fixedly installed on the left side of the filter pipe and above the water inlet pipe. The output end of the cylinder slides through the left inner wall of the filter pipe and is fixedly connected to the sealing scraping and pushing ring on the left side. Moreover, the plurality of sealing scraping and pushing rings are fixedly connected by connecting rods, and the connecting rods slide through the plurality of fixed slag blocking rings.

[0014] The present invention also provides a usage method of a solar seawater desalination treatment device, which is completed in cooperation with the above-mentioned solar seawater desalination treatment device, and includes the following steps: S1: The seawater to be treated is introduced into the filter pipe from left to right through the water inlet pipe, and successively passes through a plurality of filter cylinders for multi-stage filtration, gradually removing impurities of different particle sizes such as sediment and suspended matter in the seawater, thereby realizing multi-stage filtration.

[0015] S2: As more and more intercepted filter residues accumulate during the continuous filtration of seawater, the sealing scraping and pushing ring scrapes the filter residues outside the filter cylinder to the right. At the same time, the filter holes on the right side of the sealing scraping and pushing ring are blocked by the first sealing ring and cannot filter water, increasing the water pressure on the left side of the sealing scraping and pushing ring. Under the action of the water pressure, the seawater on the left side flushes away the filter residues that have entered the filter holes, achieving the effect of double cleaning of the filter cylinder.

[0016] S3: When the right side surface of the sealing scraping and pushing ring moves to the right of the rightmost filter hole, the space on the right side of the sealing scraping and pushing ring is sealed by the first sealing ring. At this time, the wedge rod contacts the first wedge surface of the L-shaped buckle. As the sealing scraping and pushing ring continues to move to the right, it will drive the wedge rod to squeeze the first wedge surface, driving the L-shaped buckle to slide downward and compress the return spring, releasing the lock on the slag receiving plate.

[0017] S4: After releasing the lock on the slag receiving plate, the continuous movement of the sealing scraping and pushing ring will drive the push rod to push the ear plate, driving the slag receiving plate to move to the right and slide into the installation groove and compress the strong spring. As the slag receiving plate slides, the slag discharge port gradually opens, and the seawater on the right side of the sealing scraping and pushing ring, carrying the filter residues falling on the top of the slag receiving plate, is discharged through the slag discharge port.

[0018] The beneficial effects of the present invention are as follows: 1. During the process of cleaning the filter cylinder in this application, as the sealing scraping and pushing ring continuously moves to the right, it not only realizes the scraping and cleaning of the surface of the filter cylinder, but also uses the change in water pressure to flush out the filter residues in the filter holes on the left side of the sealing scraping and pushing ring until the entire filter cylinder is cleaned. At the same time, during the entire cleaning process, the water filtering operation is always maintained, thus realizing the automatic cleaning of the filter cylinder without stopping the water filtering operation, thereby improving the continuity and stability of seawater filtration.

[0019] 2. Through the cooperation of a set of multi-stage filtration units and an integrated cleaning and slag removal unit, multi-stage filtration and non-stop cleaning operations of seawater are realized. On the basis of improving the treatment effect of seawater, the continuity of the operation of the treatment device is ensured, and the overall applicability of the treatment device is also correspondingly improved.

[0020] 3. While the sealing scraping and pushing ring of the present application physically scrapes and cleans the filter cartridge, by utilizing the increase in the water pressure on the left side of the sealing scraping and pushing ring, seawater is squeezed into the filter holes to wash away the filter residues in the filter holes, achieving the effect of double cleaning. The overall cleaning inside and outside the filter cartridge is ensured through the double cleaning mechanism.

[0021] 4. By using the stroke of the sealing scraping and pushing ring to push the filter residues to the right, the triggering component is first driven to unlock the self-opening and closing slag discharging component, and then the push rod is driven to squeeze the ear plate to drive the slag receiving plate to open and discharge the filter residues, thereby realizing the continuous integrated operation of double cleaning the filter cartridge, unlocking the slag receiving plate, and opening the slag discharging port. There is no need to set an additional driving source, which further reduces the cost of seawater filtration and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0023] Figure 2 is a partial three-dimensional structural schematic diagram of the cylinder, integrated cleaning and slag removing unit, pipe body, and multi-stage filtering unit of the present invention.

[0024] Figure 3 is a partial three-dimensional structural schematic diagram of the fixed slag retaining ring, filter cartridge, water diversion cone, and sealing ring of the present invention.

[0025] Figure 4 is Figure 3 a partial enlarged view of part A in

[0026] Figure 5 is a partial three-dimensional structural schematic diagram of the strong spring, limiting rod, ear plate, L-shaped buckle, and return spring of the present invention.

[0027] Figure 6 is a schematic diagram of the sealing scraping and pushing ring of the present invention in the initial state.

[0028] Figure 7 is a state schematic diagram of the sealing scraping and pushing ring of the present invention when it completes the scraping and cleaning operation of the filter holes of the filter cartridge.

[0029] Figure 8 is a state schematic diagram of the slag discharging port of the present invention when it opens to discharge the filter residues.

[0030] In the figure: 1. Pipe body; 101. Filter pipe; 102. Water inlet pipe; 2. Multi-stage filtration unit; 201. Fixed slag retaining ring; 202. Filter cylinder; 203. Water diversion cone; 3. Integrated cleaning and slag removal unit; 301. Cleaning and slag removal component; 302. Self-opening and closing slag discharge component; 303. Triggering component; 304. Cylinder; 305. Seal ring II; 3011. Sealing scraping and pushing ring; 3012. Seal ring I; 3021. Installation groove; 3022. Strong spring; 3023. Slag receiving plate; 3024. Slide groove; 3025. Slag discharge port; 3026. Limit rod; 3031. Open slot; 3032. Return spring; 3033. L-shaped buckle; 3034. Wedge rod; 3035. Ear plate; 3036. Push rod; 3037. L-shaped clamping groove. Detailed implementation manners

[0031] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that these embodiments are discussed so that those skilled in the art can better understand and thus implement the subject matter described herein. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0032] Refer to Figure 1 , Figure 2 and Figure 3 , a solar seawater desalination treatment device, including a pipe body 1 composed of a filter pipe 101 and a water inlet pipe 102. A multi-stage filtration unit 2 and an integrated cleaning and slag removal unit 3 for cleaning the multi-stage filtration unit 2 and removing filter residues are arranged inside the filter pipe 101. The integrated cleaning and slag removal unit 3 includes a plurality of cleaning and slag removal components 301, a plurality of self-opening and closing slag discharge components 302, and a plurality of triggering components 303 for triggering the self-opening and closing slag discharge components 302.

[0033] Refer to Figure 2 , Figure 3 and Figure 7 , the multi-stage filtration unit 2 includes a plurality of fixed slag retaining rings 201 fixedly installed on the inner wall of the filter pipe 101 and arranged at equal intervals, and a filter cylinder 202 fixedly installed on the left side of the fixed slag retaining ring 201. The filtration mesh number of the filter cylinder 202 increases sequentially from left to right. A water diversion cone 203 is fixedly installed on the left side of the filter cylinder 202.

[0034] During specific use, seawater to be treated is introduced into the filter tube 101 from left to right through the water inlet pipe 102. The seawater entering the filter tube 101 will flow to the right and pass through the water diversion cone 203 to initially disperse the water flow, reducing the impact of the water flow on the filter cylinder 202. The seawater will first pass through the leftmost filter cylinder 202 (the filter cylinder 202 on the leftmost side has the smallest filtration mesh number). When passing through the leftmost filter cylinder 202, the filter holes on this filter cylinder 202 will intercept larger impurities such as shells and algae in the seawater on the surface of the filter cylinder 202 for the first-stage filtration. The seawater after the first-stage filtration continues to flow to the right and successively passes through the subsequent filter cylinders 202 for multi-stage filtration, gradually removing impurities of different particle sizes such as sediment and suspended matter in the seawater, thereby achieving multi-stage filtration and preventing impurities from clogging or damaging subsequent treatment equipment (such as pumps, pipelines, and membrane modules). The seawater after multi-stage filtration is discharged from the right end of the filter tube 101 and enters the subsequent treatment process. As the filtration continues, most of the impurities intercepted on the surface of the filter cylinder 202 will move to the left side of the fixed slag retaining ring 201 under the impact of the water flow and accumulate on the top of the self-opening and closing slag discharging assembly 302 under the action of gravity, and a small part of the impurities will adhere to the surface of the filter cylinder 202 to form a filter residue layer.

[0035] Refer to Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8 As shown in, the cleaning and slag removing assembly 301 includes a sealing scraping and pushing ring 3011 slidably connected to the inner wall of the filter tube 101 and concentric with the filter cylinder 202. A number of sealing scraping and pushing rings 3011 and a number of fixed slag retaining rings 201 are arranged alternately. The leftmost fixed slag retaining ring 201 is located to the right of the leftmost sealing scraping and pushing ring 3011. The inner wall of the sealing scraping and pushing ring 3011 has the same diameter as the outer wall of the filter cylinder 202. A sealing ring 3012 is fixedly installed on the inner wall of the sealing scraping and pushing ring 3011, and a sealing layer is formed between the sealing ring 3012 and the outer wall of the filter cylinder 202.

[0036] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in, a cylinder 304 is fixedly installed on the left side of the filter tube 101 and above the water inlet pipe 102. The output end of the cylinder 304 slidably penetrates the left inner wall of the filter tube 101 and is fixedly connected to the left sealing scraping and pushing ring 3011. Moreover, a number of sealing scraping and pushing rings 3011 are fixedly connected by connecting rods, and the connecting rods slidably penetrate a number of fixed slag retaining rings 201.

[0037] During specific use, in the initial state, the sealing scraping and pushing ring 3011 is located on the left side of the water diversion cone 203 (such as Figure 6As shown, with the continuous progress of seawater filtration, more and more intercepted filter residues accumulate. After the filter holes of the filter cylinder 202 are gradually blocked by the filter residues, the filtration speed slows down. At this time, the air cylinder 304 is activated, and the output end of the air cylinder 304 pushes several sealing scraping rings 3011 to move to the right. During the rightward movement of the sealing scraping rings 3011, the filter residues on the outer side of the filter cylinder 202 will be gradually scraped off, and a very small part of the filter residues will be squeezed into the filter holes of the filter cylinder 202. During the process of the sealing scraping rings 3011 moving to the right to scrape and clean the filter cylinder 202, the filter holes on the right side of the sealing scraping rings 3011 on the filter cylinder 202 are blocked by the first sealing ring 3012 and cannot filter water. At the same time, some of the filter holes on the right side of the sealing scraping rings 3011 are separated by the sealing scraping rings 3011, resulting in a reduction in the number of filter holes that can filter water on the left side of the sealing scraping rings 3011. However, the water inlet pressure at the end of the water inlet pipe 102 remains unchanged. Therefore, the water pressure on the left side of the sealing scraping rings 3011 will increase, and the seawater on the left side of the sealing scraping rings 3011 will be squeezed into the filter holes on the left side of the sealing scraping rings 3011 under the action of the water pressure, flushing out the filter residues squeezed into the filter holes. With the continuous rightward scraping and cleaning of the sealing scraping rings 3011, not only the surface of the filter cylinder 202 is cleaned, but also the filter residues in the filter holes will be washed out until the entire cleaning of the filter cylinder 202 is completed, thus achieving a dual cleaning effect on the filter cylinder 202, and the water filtration operation is always maintained during the entire cleaning process, without the need to stop the water filtration operation while automatically cleaning the filter cylinder 202.

[0038] Refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 8 The self-opening and discharging slag component 302 includes a slag discharging port 3025 opened at the bottom of the filter pipe 101 and located on the left side of the fixed slag retaining ring 201. An installation groove 3021 is opened on the inner wall of the right side of the slag discharging port 3025. A number of strong springs 3022 are fixedly installed on the inner wall of the right side of the installation groove 3021. A slag receiving plate 3023 is jointly installed at the left ends of the number of strong springs 3022. A sliding groove 3024 is opened on the right side of the slag receiving plate 3023. The filter pipe 101 is slidably connected with the sliding groove 3024. A limiting rod 3026 corresponding to each strong spring 3022 is fixedly installed on the right side of the slag receiving plate 3023. The strong spring 3022 is sleeved outside the corresponding limiting rod 3026. A limiting groove slidably matched with the limiting rod 3026 is opened on the inner wall of the right side of the installation groove 3021.

[0039] Refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 8, the triggering component 303 includes an opening groove 3031 formed on the left side of the slag receiving plate 3023. A circular groove is formed at the bottom of the opening groove 3031, and a return spring 3032 is fixedly installed at the bottom of the circular groove. The top end of the return spring 3032 is fixedly installed with an L-shaped buckle 3033. The L-shaped buckle 3033 is located on the right side of the corresponding sealing scraping and pushing ring 3011. A wedge-shaped rod 3034 is fixedly installed on the right side of the sealing scraping and pushing ring 3011. An L-shaped card slot 3037 is formed on the inner wall of the left side of the slag discharge port 3025. The two ends of the L-shaped buckle 3033 are respectively matched with the wedge-shaped rod 3034 and the L-shaped card slot 3037. A second sealing ring 305 is fixedly installed on the left side of the slag receiving plate 3023 and above the opening groove 3031. A sealing layer is formed between the second sealing ring 305 and the slag discharge port 3025.

[0040] Refer to Figure 3 , Figure 4 and Figure 5 , a first wedge-shaped surface facing the left is formed at the top end of the vertical section of the L-shaped buckle 3033, and the wedge-shaped rod 3034 is matched with the first wedge-shaped surface. A second wedge-shaped surface and a clamping surface are respectively formed at the left end and the top end of the horizontal section of the L-shaped buckle 3033. When the L-shaped buckle 3033 is clamped and matched with the L-shaped card slot 3037, the second wedge-shaped surface is located in the vertical section of the L-shaped card slot 3037, and the clamping surface contacts the inner top wall of the horizontal section of the L-shaped card slot 3037.

[0041] Refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , two symmetrically arranged front and rear push rods 3036 are fixedly installed on the right side of the sealing scraping and pushing ring 3011. Two symmetrically arranged front and rear ear plates 3035 that are matched with the corresponding push rods 3036 are fixedly installed on the top of the slag receiving plate 3023. The part of the inner wall of the sealing scraping and pushing ring 3011 on the left side of the first sealing ring 3012 is of a tapered structure with the small diameter end close to the corresponding fixed slag retaining ring 201.

[0042] During specific use, when the right side surface of the sealing scraping and pushing ring 3011 moves to the rightmost filter hole on the filter cylinder 202 (such as Figure 7As shown in the figure, the space on the right side of the sealing scraping and pushing ring 3011 is sealed by the first sealing ring 3012, and there is still some seawater on the right side of the sealing scraping and pushing ring 3011 (this part of the seawater will wash down the filter residue scraped off by the sealing scraping and pushing ring 3011 to prevent the filter residue from adhering to the right side surface of the sealing scraping and pushing ring 3011). At this time, the wedge rod 3034 is in contact with the first wedge surface of the L-shaped buckle 3033. As the sealing scraping and pushing ring 3011 continues to move to the right, it will drive the wedge rod 3034 to squeeze the first wedge surface, driving the L-shaped buckle 3033 to slide downward and compress the return spring 3032, so that the clamping surface of the L-shaped buckle 3033 is separated from the inner top wall of the horizontal section of the L-shaped clamping groove 3037. The second wedge surface of the L-shaped buckle 3033 is located at the connection between the horizontal section and the vertical section of the L-shaped clamping groove 3037. At this time, the wedge rod 3034 is separated from the first wedge surface, and the L-shaped buckle 3033 is squeezed below the wedge rod 3034, and the push rod 3036 is in contact with the ear plate 3035. Then, when the sealing scraping and pushing ring 3011 continues to move, it will drive the push rod 3036 to push the ear plate 3035, driving the slag receiving plate 3023 to move to the right and slide into the installation groove 3021 and compress the strong spring 3022. The L-shaped buckle 3033 moves synchronously with the slag receiving plate 3023. As the slag receiving plate 3023 slides to the right, the slag discharge port 3025 gradually opens (refer to Figure 8 ), and the seawater on the right side of the sealing scraping and pushing ring 3011 carries the filter residue falling on the top of the slag receiving plate 3023 and discharges it through the slag discharge port 3025.

[0043] After the slag discharge is completed, the output end of the control cylinder 304 contracts, driving the sealing scraping and pushing ring 3011 to move to the left for reset. During this process, as the sealing scraping and pushing ring 3011 moves, the pressure on the strong spring 3022 gradually decreases and it extends and resets, thereby pushing the slag receiving plate 3023 to move to the left for reset, and then driving the L-shaped buckle 3033 to gradually move to the left for reset. When the second wedge surface of the L-shaped buckle 3033 squeezes the upper edge of the right side of the horizontal section of the L-shaped clamping groove 3037, the L-shaped buckle 3033 is pressed downward and compresses the return spring 3032, and then inserts into the L-shaped clamping groove 3037. When the clamping surface of the L-shaped buckle 3033 faces the inner top wall of the horizontal section of the L-shaped clamping groove 3037, the return spring 3032 resets, driving the L-shaped buckle 3033 to move upward, so that the clamping surface of the L-shaped buckle 3033 abuts against the inner top wall of the horizontal section of the L-shaped clamping groove 3037. The second wedge surface of the L-shaped buckle 3033 is located in the vertical section of the L-shaped clamping groove 3037 to lock the slag receiving plate 3023. Then, the sealing scraping and pushing ring 3011 continues to move to the left to a position on the left side of the water inlet cone 203 for reset (as Figure 6 shown).

[0044] It should be noted that as the seawater continues to be filtered, the cylinder 304 is periodically started to control the integrated cleaning and slag removal unit 3 to clean and discharge the filter residue.

[0045] Refer toFigures 1 to 8 , the present invention also provides a method for using a solar seawater desalination treatment device, which specifically includes the following steps: S1: Pass the seawater to be treated from left to right into the filter tube 101 through the water inlet pipe 102, and successively pass through a number of filter cartridges 202 for multi-stage filtration to gradually remove impurities with different particle sizes such as shells, sediment, and suspended matter in the seawater, thereby achieving multi-stage filtration.

[0046] S2: As the seawater filtration continues, more and more intercepted filter residues accumulate. The sealing scraping and pushing ring 3011 scrapes off the filter residues outside the filter cartridge 202 to the right. At the same time, the filter holes on the filter cartridge 202 located on the right side of the sealing scraping and pushing ring 3011 are blocked by the first sealing ring 3012 and cannot filter water, increasing the water pressure on the left side of the sealing scraping and pushing ring 3011. The seawater on the left side of the sealing scraping and pushing ring 3011 will flush open the filter residues squeezed into the filter holes under the action of the water pressure, achieving the effect of double cleaning of the filter cartridge 202.

[0047] S3: When the right side surface of the sealing scraping and pushing ring 3011 moves to the rightmost filter hole, the space on the right side of the sealing scraping and pushing ring 3011 is sealed by the first sealing ring 3012. At this time, the wedge-shaped rod 3034 contacts the first wedge-shaped surface of the L-shaped buckle 3033. As the sealing scraping and pushing ring 3011 continues to move to the right, it will drive the wedge-shaped rod 3034 to squeeze the first wedge-shaped surface, driving the L-shaped buckle 3033 to slide downward and compress the return spring 3032, releasing the lock on the slag receiving plate 3023.

[0048] S4: After releasing the lock on the slag receiving plate 3023, the continuous movement of the sealing scraping and pushing ring 3011 will drive the push rod 3036 to push the ear plate 3035, driving the slag receiving plate 3023 to move to the right and slide into the installation groove 3021 and compress the strong spring 3022. As the slag receiving plate 3023 slides, the slag discharge port 3025 gradually opens, and the seawater on the right side of the sealing scraping and pushing ring 3011 carries the filter residues falling on the top of the slag receiving plate 3023 and discharges them through the slag discharge port 3025.

[0049] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly explaining the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A solar desalination treatment device, characterized in that, Including: A pipe body composed of a filter pipe and a water inlet pipe. Inside the filter pipe, there are multiple-stage filtering units and an integrated cleaning and slag-removing unit for cleaning the multiple-stage filtering units and removing filter residues. The integrated cleaning and slag-removing unit includes several cleaning and slag-removing components, several self-opening and closing slag-discharging components, and several triggering components for triggering the self-opening and closing slag-discharging components; The multiple-stage filtering units include several fixed slag-blocking rings fixedly installed on the inner wall of the filter pipe and arranged at equal intervals, and filter cylinders fixedly installed on the left side of the fixed slag-blocking rings. The filtering mesh number of the filter cylinders increases sequentially from left to right. A water diversion cone is fixedly installed on the left side of the filter cylinder; The cleaning and slag-removing components include a sealing scraping and pushing ring slidably connected to the inner wall of the filter pipe and concentric with the filter cylinder. The inner wall of the sealing scraping and pushing ring has the same diameter as the outer wall of the filter cylinder. A first sealing ring is fixedly installed on the inner side of the sealing scraping and pushing ring. A sealing layer is formed between the first sealing ring and the outer wall of the filter cylinder; A cylinder is fixedly installed on the left side of the filter pipe and above the water inlet pipe. The output end of the cylinder slidably penetrates the left inner wall of the filter pipe and is fixedly connected to the sealing scraping and pushing ring on the left side. And several sealing scraping and pushing rings are fixedly connected by a connecting rod. The connecting rod slidably penetrates several fixed slag-blocking rings; When the sealing scraping and pushing ring moves to the right, it gradually scrapes off the filter residues on the outside of the filter cylinder. A very small part of the filter residues will be squeezed into the filter holes of the filter cylinder. When the sealing scraping and pushing ring moves to the right for scraping, the filter holes on its right side are blocked and cannot filter water. The number of filter holes for filtering water on the left side decreases, but the water inlet pressure remains unchanged, resulting in an increase in the water pressure on the left side of the sealing scraping and pushing ring. The filter residues squeezed into the filter holes are washed away until the entire filter cylinder is cleaned. Then the sealing scraping and pushing ring drives the triggering component to trigger the self-opening and closing slag-discharging component to discharge the scraped filter residues out of the filter pipe.

2. The solar seawater desalination treatment device according to claim 1, wherein Several sealing scraping and pushing rings and several fixed slag-blocking rings are arranged alternately. The leftmost fixed slag-blocking ring is located to the right of the leftmost sealing scraping and pushing ring.

3. A solar seawater desalination treatment device according to claim 1, wherein, The self-opening and closing slag-discharging component includes a slag-discharging port opened at the bottom of the filter pipe and on the left side of the fixed slag-blocking ring. An installation groove is opened on the inner wall of the right side of the slag-discharging port. Several strong springs are fixedly installed on the inner wall of the right side of the installation groove. The left ends of the several strong springs are jointly installed with a slag-bearing plate. A sliding groove is opened on the right side of the slag-bearing plate. The filter pipe is slidably connected with the sliding groove. A limiting rod is fixedly installed on the right side of the slag-bearing plate. The strong spring is sleeved outside the corresponding limiting rod. A limiting groove slidably matched with the limiting rod is opened on the inner wall of the right side of the installation groove.

4. The solar seawater desalination treatment device according to claim 3, wherein, The triggering component includes an opening groove opened on the left side of the slag-bearing plate. A circular groove is opened at the bottom of the opening groove. A reset spring is fixedly installed at the bottom of the circular groove. The top of the reset spring is fixedly installed with an L-shaped buckle. The L-shaped buckle is located on the right side of the corresponding sealing scraping and pushing ring. A wedge-shaped rod is fixedly installed on the right side of the sealing scraping and pushing ring. An L-shaped clamping groove is opened on the inner wall of the left side of the slag-discharging port. The two ends of the L-shaped buckle are respectively matched with the wedge-shaped rod and the L-shaped clamping groove. A second sealing ring is fixedly installed on the left side of the slag-bearing plate and above the opening groove. A sealing layer is formed between the second sealing ring and the slag-discharging port.

5. The solar seawater desalination treatment device according to claim 4, characterized in that The top end of the vertical section of the L-shaped buckle is provided with a first wedge surface facing left, and the wedge rod is matched with the first wedge surface. The left end and the top end of the horizontal section of the L-shaped buckle are respectively provided with a second wedge surface and a clamping surface. When the L-shaped buckle is clamped and matched with the L-shaped card slot, the second wedge surface is located in the vertical section of the L-shaped card slot, and the clamping surface is in contact with the inner top wall of the horizontal section of the L-shaped card slot.

6. The solar seawater desalination treatment device according to claim 5, characterized in that, Two push rods that are symmetric in the front and back are fixedly installed on the right side of the sealing scraping and pushing ring. Ear plates that are symmetric in the front and back and are matched with the corresponding push rods are fixedly installed on the top of the slag receiving plate. The part of the inner wall of the sealing scraping and pushing ring on the left side of the first sealing ring has a tapered structure with the small-diameter end close to the corresponding fixed slag retaining ring.

7. A method for using a solar seawater desalination treatment device, characterized in that, It is completed by using a solar seawater desalination treatment device as described in claim 6. It includes the following steps: S1: The seawater to be treated is introduced into the filter pipe from left to right through the water inlet pipe, and successively passes through a number of filter cylinders for multi-stage filtration to gradually remove impurities with different particle sizes such as sediment and suspended matter in the seawater, thereby achieving multi-stage filtration. S2: As the seawater filtration continues, more and more intercepted filter residues accumulate. The sealing scraping and pushing ring scrapes the filter residues outside the filter cylinder to the right. At the same time, the filter holes of the filter cylinder on the right side of the sealing scraping and pushing ring are blocked by the first sealing ring and cannot filter water, so that the water pressure on the left side of the sealing scraping and pushing ring increases. The seawater on the left side will flush open the filter residues that have entered the filter holes under the action of the water pressure to double-clean the filter cylinder. S3: When the right side surface of the sealing scraping and pushing ring moves to the right of the rightmost filter hole, the space on the right side of the sealing scraping and pushing ring is sealed by the first sealing ring. At this time, the wedge rod contacts the first wedge surface of the L-shaped buckle. As the sealing scraping and pushing ring continues to move to the right, it will drive the wedge rod to squeeze the first wedge surface, drive the L-shaped buckle to slide downward and compress the return spring, and release the locking of the slag receiving plate. S4: After releasing the locking of the slag receiving plate, the continuous movement of the sealing scraping and pushing ring will drive the push rod to push the ear plate, drive the slag receiving plate to move to the right and slide into the installation groove and compress the strong spring. As the slag receiving plate slides, the slag discharge port is gradually opened, and the seawater on the right side of the sealing scraping and pushing ring carries the filter residues falling on the top of the slag receiving plate and discharges through the slag discharge port.

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