A water purification device

Abstract

The present invention relates to the field of water treatment technology, and specifically discloses a water purification device, including a sliding sleeve, a cleaning ring, a scraping ring, a flexible shell, a sealing assembly and a driving assembly. The annular sliding sleeve is slidably arranged on the lampshade along the length direction of the lampshade, the left end face of the sliding sleeve is provided with a cleaning ring and a rotatable scraping ring, the inner surface of the cleaning ring is in close contact with the lampshade, one end of the flexible shell is connected to the sliding sleeve, the two ends of the flexible shell transmit power through a telescopic rod, and the telescopic direction of the flexible shell is limited by the telescopic rod, a connecting rod is provided between the flexible shell and the scraping ring, the sealing assembly closes the gap when the flexible shell abuts the disinfection tube, and the driving assembly controls the telescopic action of the flexible shell according to the sliding resistance of the sliding sleeve; the water purification device of the present invention can automatically switch between different cleaning modes to reduce damage, and the state switching of the sealing assembly ensures that impurities are sealed when cleaning is completed to prevent secondary pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a water purification device. Background Art

[0002] In today's society, the importance of water resources is self-evident, and water purification technology is key to ensuring high-quality water. The production of various types of drinking water, including beverages, requires purification of tap water to improve water quality, remove impurities, and effectively control various types of contamination. Traditional water purification technologies have limitations when dealing with complex water quality. For example, reverse osmosis technology can effectively remove most impurities from water, but at high salt concentrations, membrane elements are susceptible to contamination and scaling, shortening their service life and increasing maintenance costs. While distillation can produce high-purity water, it consumes significant energy and has high operating costs.

[0003] Sterilization is a critical step in the water treatment process. Traditional water sterilization technologies, such as chlorine and ozone disinfection, have significant drawbacks. Chlorine disinfection produces carcinogenic byproducts such as trihalomethanes, and long-term consumption of chlorine-containing disinfected water may be harmful to human health. Ozone disinfection requires complex equipment to maintain ozone concentration, and residual ozone easily decomposes and causes secondary pollution. At the same time, some microorganisms develop resistance to chemical disinfectants, resulting in reduced sterilization effectiveness. Furthermore, in industries with stringent water quality requirements, such as the food and beverage industry, chemical residues may affect product quality, and high-temperature sterilization destroys heat-sensitive components. Ultraviolet light sterilization technology, on the other hand, uses ultraviolet light of a specific wavelength to destroy the DNA / RNA structure of microorganisms, rendering them unable to reproduce. It offers advantages such as rapid sterilization, no chemical residue, and no change in the chemical properties of the water. It effectively addresses the limitations of traditional technologies and provides a reliable and sustainable solution for ensuring a safe and high-quality water supply.

[0004] The Chinese patent application document with publication number CN118387973A discloses a water purification device for a pump room, including a pump room water tank and a disinfection cylinder arranged on one side of the pump room water tank, one end of the disinfection cylinder having a water inlet pipe port, and the other end of the disinfection cylinder having a water outlet pipe port, the water outlet pipe port being connected to the pump room water tank through a pipe, the disinfection cylinder being provided with a plurality of ultraviolet lamp tubes distributed around the axis of the disinfection cylinder, the plurality of ultraviolet lamp tubes revolve around the axis of the disinfection cylinder, and each ultraviolet lamp tube rotates around its own axis, and the disinfection cylinder being provided with a rotating device for driving the ultraviolet lamp tube to revolve and rotate.

[0005] In the related prior art, when ultraviolet lamps are used for sterilization, the bodies of killed bacteria will accumulate on the outer shell of the ultraviolet lamp, and scale will accumulate on the surface of the ultraviolet lamp. As the impurities on the surface of the ultraviolet lamp accumulate more, the transmittance of the ultraviolet lamp decreases, and the sterilization effect of the ultraviolet lamp decreases. In the prior art, when cleaning, it is necessary to drain the water in the disinfection tube to reduce pollution. In addition, the thickness of the impurities on the surface of the ultraviolet lamp is different from the adhesion state. Flexible cleaning components are difficult to achieve effective cleaning, and long-term use of hard cleaning components will damage the surface of the ultraviolet lamp. Summary of the Invention

[0006] The present invention provides a water purification device, which aims to solve the problem in the related art that during cleaning, the water in the disinfection tube needs to be discharged to reduce pollution, and the thickness and adhesion state of impurities on the surface of the ultraviolet lamp are different, so flexible cleaning components are difficult to achieve effective cleaning, and long-term use of hard cleaning components will cause damage to the surface of the ultraviolet lamp.

[0007] The cleaning ring is fixed on the left end surface of the sliding sleeve, and the cleaning ring is in close contact with the outer surface of the lampshade; the cleaning ring is provided on the left end surface of the sliding sleeve, and the cleaning ring is provided on the outer surface of the lampshade; the cleaning ring is provided on the left end surface of the sliding sleeve, and the cleaning ring is provided on the sliding sleeve; the cleaning ring is provided with a plurality of scrapers in contact with the lampshade ... By arranging a sliding sleeve, a cleaning ring, a scraping ring, a sealing assembly and a driving assembly, when the driving assembly pushes the sliding sleeve to move leftward along the axis of the lampshade, the cleaning ring cleans the surface of the lampshade. When encountering stubborn stains and causing the movement resistance to increase, the flexible shell begins to extend axially, driving the scraping ring to rotate, and performing spiral deep scraping on the lampshade. After the cleaning is completed, the driving assembly moves to the right, the flexible shell drives the sliding sleeve to reset, and the sealing assembly remains in a closed state. The linkage design of the sliding sleeve and the flexible shell realizes automatic cleaning, which not only ensures the cleaning force but also avoids scratching the lampshade. In addition, by utilizing the cooperation of the flexible shell and the scraping ring, it can effectively clean different impurities on the lampshade while ensuring that the cleaned impurities will not spread and cause secondary pollution. The design of the sealing assembly ensures that impurities can smoothly enter the sealing assembly during the cleaning process, and the impurities are sealed when the cleaning is completed to prevent secondary pollution.

[0008] Preferably, the left end face of the cleaning ring is a conical inclined surface, and the conical surface of the cleaning ring gradually expands from left to right. A plurality of scrapers are arranged on the scraping ring at equal intervals, and the contact position between the scrapers and the cleaning ring abuts the cleaning ring.

[0009] By setting the contact position of the scraper and the cleaning ring to abutment, impurities accumulated on the surface of the cleaning ring are continuously scraped off during the rotation of the scraper. The dynamic contact between the scraper and the cleaning ring avoids the secondary accumulation of impurities on the edge of the cleaning ring. At the same time, the evenly distributed scrapers cover the entire circumference of the lampshade, ensuring that there are no dead angles in the cleaning operation.

[0010] Preferably, a hard ring is provided at the left end of the flexible shell, and a hollow telescopic rod is provided between the hard ring and the sliding sleeve. The telescopic rod enables the left end of the flexible shell to move closer to or away from the sliding sleeve along the axis of the lampshade. The driving mechanism includes a connecting rod, the left end of the connecting rod is ball-hinged on the hard ring, and the right end of the connecting rod is ball-hinged on the scraper ring.

[0011] By setting a hard ring, the motion deviation caused by the deformation of the flexible shell is avoided. The connecting rod forms a spatial motion pair through the ball joint structure at both ends. When the hard ring moves back and forth with the flexible shell, the connecting rod converts the axial displacement of the hard ring into the rotation of the scraping ring, thereby scraping off impurities.

[0012] Preferably, the sealing assembly includes a plurality of arc blocks, which are arranged at equal intervals around the lampshade, a guide block is provided on the arc block, a guide groove is provided on the hard ring, the guide block and the guide groove slide together to make the plurality of arc blocks move toward the lampshade, and when the arc block abuts the lampshade, the plurality of arc blocks form a circular ring to block the gap between the hard ring and the lampshade.

[0013] By setting up multiple arc blocks, guide blocks and guide grooves, the gap can be quickly sealed after cleaning to prevent impurities in the flexible shell from overflowing. The inclination angle of the guide groove is set to enable the arc block to generate a radial displacement component during movement, thereby achieving rapid closure of the sealing surface within a limited axial stroke. The equidistant layout between the arc blocks ensures uniform distribution of sealing pressure and avoids the risk of leakage caused by local gaps.

[0014] Preferably, marbles are provided on the front and rear side walls of the guide block, and when the arc-shaped block abuts against the lampshade, the marbles abut against the right side wall of the hard ring.

[0015] Preferably, a limiting rod is provided on the arc block, a limiting block is provided on the inner wall of the disinfection tube, the limiting rod abuts against the limiting block, and the arc block overcomes the elastic reset of the ball itself.

[0016] Preferably, the drive assembly includes a drive rod and a spring telescopic part. The right end of the disinfection tube is set at one end of the drive rod, and the other end is provided with a spring telescopic part. The spring telescopic part passes through the telescopic rod and is connected to the hard ring. The spring telescopic part is initially at the maximum length.

[0017] Preferably, a stop ring is provided on the driving rod, and after the spring telescopic member contracts to a preset length, the stop ring abuts against the right side of the sliding sleeve.

[0018] Preferably, an annular cleaning cotton is provided in the sliding sleeve, and the cleaning cotton is in close contact with the lampshade.

[0019] By setting up cleaning cotton, the annular closed structure of the cleaning cotton can cover the entire circumferential area outside the lampshade. Its flexible material can capture microbial debris and scale particles through fiber pores during contact, and can adapt to the tiny unevenness on the surface of the lampshade through elastic deformation.

[0020] Preferably, the scraper blade is arranged at an angle, and the scraper ring rotates so that the scraper blade pushes the impurities away from the cleaning ring.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are:

[0022] By setting a sliding sleeve, a cleaning ring, a scraping ring, a sealing assembly and a driving assembly, during cleaning, the cleaning ring is used to clean ordinary impurities. The flexible cleaning ring reduces damage to the lampshade during the cleaning process. When impurities accumulate or there is scale, the scraping ring rotates to perform spiral deep scraping on the lampshade to ensure the cleaning effect. The cleaning cotton cleans the remaining impurities. The state switching design of the sealing assembly ensures that impurities can smoothly enter the flexible shell during the cleaning process. The impurities are sealed when the cleaning is completed to prevent secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the water purification equipment of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the water purification equipment of the present invention from a side view.

[0025] Figure 3 It is a structural schematic diagram of the disinfection tube of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the lampshade of the present invention.

[0027] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0028] Figure 6 It is a structural schematic diagram of the cleaning component of the present invention.

[0029] Figure 7 for Figure 6 Schematic diagram of the enlarged portion B.

[0030] Figure 8 Schematic diagram of the structure of the sealing assembly of the present invention.

[0031] Figure 9 for Figure 8 Enlarged schematic diagram of part C.

[0032] Reference numerals:

[0033] 11. Disinfection tube; 12. Ultraviolet lamp; 13. Lampshade; 2. Sliding sleeve; 21. Cleaning ring; 22. Scraping ring; 23. Scraper; 24. Cleaning cotton; 3. Flexible shell; 31. Telescopic rod; 32. Connecting rod; 33. Hard ring; 4. Sealing assembly; 41. Arc block; 42. Guide block; 43. Guide groove; 44. Ball; 45. Limit rod; 46. Limit block; 5. Drive assembly; 51. Drive rod; 53. Stop ring. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] In the prior art, ultraviolet disinfection equipment typically has multiple disinfection tubes 11 horizontally mounted on a bracket. Each end of the disinfection tube 11 is provided with a water inlet and outlet. The outer sides of the multiple water inlets and outlets are connected to water inlet and outlet pipes. A lampshade 13 is horizontally mounted within the disinfection tube 11, housing an ultraviolet lamp 12. The ultraviolet lamp 12 sterilizes the water within the disinfection tube 11 through the lampshade 13. However, after long-term use, bacterial residues and scale accumulate on the surface of the lampshade 13, reducing light transmittance and affecting the sterilization effect. Traditional cleaning methods require draining the water and then manually wiping. Hard scraping tools can easily damage the surface of the quartz lamp, while flexible cleaning devices struggle to effectively remove stubborn stains. This operation can also cause impurities to flow back, leading to secondary contamination of the water.

[0036] like Figures 1 to 7 As shown, a water purification device includes: a sliding sleeve 2, a cleaning ring 21, a scraping ring 22, a flexible shell 3, a sealing assembly 4 and a driving assembly 5; the annular sliding sleeve 2 is slidably arranged on the lampshade 13 along the length direction of the lampshade 13, and the left end face of the sliding sleeve 2 is provided with a cleaning ring 21 and a rotatable scraping ring 22, the inner surface of the cleaning ring 21 is in close contact with the lampshade 13, one end of the flexible shell 3 is connected to the sliding sleeve 2, the two ends of the flexible shell 3 transmit power through a hollow telescopic rod 31, and the telescopic rod 31 is used to limit the telescopic direction of the flexible shell 3, a connecting rod 32 is provided between the flexible shell 3 and the scraping ring 22, the sealing assembly 4 closes the gap when the flexible shell 3 abuts the left end of the disinfection tube 11, the driving assembly 5 controls the telescopic action of the flexible shell 3 according to the sliding resistance of the sliding sleeve 2, and the flexible shell 3 telescopically drives the scraping ring 22 to rotate and clean the surface of the lampshade 13.

[0037] like Figures 4 to 6 As shown, when the drive assembly 5 pushes the sliding sleeve 2 to move axially along the lampshade 13, the cleaning ring 21 cleans the surface of the lampshade 13. When encountering stubborn stains such as scale, which increases the resistance to movement, the flexible shell 3 begins to extend axially, and the connecting rod 32 drives the scraping ring 22 to rotate, causing the scraping ring 22 to perform a spiral deep scraping of the lampshade 13. When the flexible shell 3 moves to the end of the disinfection tube 11, the sealing assembly 4 at its left end is squeezed and contracted toward the center, forming an annular sealing band to block the gap. After cleaning is completed, the drive assembly 5 moves in the opposite direction, and the sliding sleeve 2 returns to its initial position.

[0038] By setting up the sliding sleeve 2, the cleaning ring 21 and the scraping ring 22, etc., impurities on the surface of the lampshade 13 can be automatically removed during the continuous water treatment process, and the ultraviolet light transmittance can be kept stable. The coordinated use of the cleaning ring 21 and the scraping ring 22 can not only process soft biofilms but also remove hardened scale. The dynamic sealing component 4 ensures that impurities will not overflow into the disinfection tube 11 after cleaning, avoiding secondary pollution. The flexible driving structure protects the surface integrity of the lampshade 13 while transmitting sufficient mechanical force, thereby extending the service life of the equipment.

[0039] like Figures 1 to 4 As shown, the disinfection tube 11 is horizontally arranged on a support frame, and a detachable blocking plate is provided at both ends of the disinfection tube 11. The lampshade 13 is coaxially inserted into the disinfection tube 11 through the blocking plate. One end of the lampshade 13 is open, and the ultraviolet lamp 12 is installed in the lampshade 13. The light emitted by the ultraviolet lamp 12 radiates outward through the lampshade 13 to sterilize and disinfect the water in the disinfection tube 11. The design of the blocking plate not only facilitates the installation and disassembly of the lampshade 13, but also ensures the sealing of the disinfection tube 11 to prevent water leakage. The design of the lampshade 13 with one end open facilitates the installation of the ultraviolet lamp 12, and the lampshade 13 separates the ultraviolet lamp 12 from the water flow. The ultraviolet lamp 12 does not directly contact the water to improve the safety of use. The horizontal arrangement of the disinfection tube 11 makes the flow of water therein more uniform, which is conducive to improving the effect of sterilization and disinfection. In addition, the connection between the blocking plate and the disinfection tube 11 adopts a sealing structure, which further enhances the overall sealing performance and ensures the stability and reliability of the equipment during long-term use.

[0040] like Figures 4 to 6As shown, the sliding sleeve 2 is an annular movable component that wraps around the outer wall of the lampshade 13. The sliding sleeve 2 is mounted on the outside of the lampshade 13 and moves left and right along the lampshade 13 within the disinfection tube 11. A small gap is provided between the inner wall of the sliding sleeve 2 and the outer wall of the lampshade 13 to allow the lampshade 13 to move unimpeded. The left and right movement range of the sliding sleeve 2 is limited to ensure that its movement within the disinfection tube 11 is controllable and avoid excessive interference with the water flow. In addition, the sliding sleeve 2 is made of stainless steel, which has excellent corrosion resistance and mechanical strength. It can maintain structural stability and reliability during long-term use, thereby extending the service life of the entire water purification equipment.

[0041] like Figures 6 to 9 As shown, the left end face of the sliding sleeve 2 is provided with a cleaning ring 21 and a scraping ring 22. The cleaning ring 21 is fixedly set on the sliding sleeve 2. The side of the cleaning ring 21 closes the lampshade 13 and is tightly attached to the lampshade 13. The cleaning ring 21 is made of wear-resistant rubber and is used to scrape off surface attachments of the lampshade 13. When the sliding sleeve 2 moves to the left, the cleaning ring 21 cleans impurities on the surface of the lampshade 13.

[0042] The scraper ring 22 is rotatably mounted on the left end of the sliding sleeve 2, and its rotatable mounting method uses a bearing connection. Specifically, a bearing seat can be provided on the left end surface of the sliding sleeve 2, and a bearing can be installed in the bearing seat. The scraper ring 22 is connected to the bearing via a rotating shaft, thereby realizing the rotation of the scraper ring 22.

[0043] In this installation method, the scraper ring 22 can rotate freely around the rotating axis. At the same time, the presence of the bearing also reduces friction and wear during the rotation process, thereby increasing the service life of the scraper ring 22. In addition, the precision and stability of the bearing can also ensure the stability and reliability of the scraper ring 22 during the rotation process. A plurality of scrapers 23 are provided on the left end face of the scraper ring 22. The plurality of scrapers 23 are arranged at equal intervals around the scraper ring 22. The surface of the scraper 23 in contact with the lampshade 13 is in close contact with the lampshade 13. The contact portion of the scraper 23 with the lampshade 13 is coated with a flexible film. The equidistant arrangement of the scrapers 23 in a circular manner means that the plurality of scrapers 23 are distributed at equal intervals on the circumference of the scraper ring 22. Specifically, six or eight scrapers 23 can be evenly distributed along the circumference. This layout ensures that the cleaning force of each area on the surface of the lampshade 13 is uniform.

[0044] Multiple scrapers 23 are arranged at equal intervals around the scraper ring 22. The surfaces of the scrapers 23 in contact with the lampshade 13 are in close contact with the lampshade 13. This design ensures that the scrapers 23 evenly and comprehensively cover the surface of the lampshade 13, effectively removing stubborn impurities from the lampshade 13 within a narrow range of rotation. The contact portions of the scrapers 23 with the lampshade 13 are coated with a flexible film, which not only enhances the scrapers' 23's conformability but also reduces wear on the lampshade 13 surface, protecting the integrity of the lampshade 13. Furthermore, the presence of the flexible film allows the scrapers 23 to better adapt to the subtle irregularities on the lampshade 13 surface during scraping, improving the cleaning effect.

[0045] like Figures 6 to 9 As shown, the left end face of the cleaning ring 21 is tilted, and the left end face of the cleaning ring 21 forms a slope structure that gradually narrows from the left side to the right side, and its tilt angle range can be between 30° and 60°. During the axial movement of the sliding sleeve 2 along the lampshade 13, the tilted left end face of the cleaning ring 21 guides the impurities into the rotation path range of the scraper ring 22. The end face of the scraper 23 in contact with the cleaning ring 21 is a slope, and the scraper 23 abuts against the cleaning ring 21. During the rotation process, the end slope of the scraper 23 continuously contacts the inclined surface of the cleaning ring 21. This contact method can remove residual impurities attached to the surface of the cleaning ring 21 in real time.

[0046] Specifically, as the equally spaced scrapers 23 rotate with the scraper ring 22, their ends maintain contact with the inclined surface of the cleaning ring 21, continuously scraping away impurities accumulated on the surface of the cleaning ring 21 during rotation. This dynamic contact between the scrapers 23 and the cleaning ring 21 prevents secondary accumulation of impurities at the edges of the cleaning ring 21. Furthermore, the evenly spaced scrapers 23 cover the entire circumference of the lampshade 13, ensuring a complete cleaning process.

[0047] like Figures 4 to 7 As shown, the scraper 23 is arranged at an angle. The scraper 23 is arranged at an angle, which means that the extension direction of the scraper 23 forms a non-vertical angle with the radial direction of the scraper ring 22. Specifically, it can be achieved by forming an inclination angle of 30° to 60° at the connection between the root of the scraper 23 and the scraper ring 22. This inclination angle enables the scraper 23 to form a directional chip removal track when it rotates.

[0048] When the scraping ring 22 is driven by the connecting rod 32 to rotate, the inclined scraper 23 is kept in contact with the surface of the lampshade 13. During the rotation, the impurities removed are pushed to the left along the inclined direction of the scraper 23 to avoid forming an annular residue on the edge of the cleaning ring 21.

[0049] like Figures 4 to 6As shown, the flexible shell 3 is arranged at the left end of the sliding sleeve 2, the flexible shell 3 is connected to the sliding sleeve 2, a hard ring 33 is provided at the left end of the flexible shell 3, a connecting rod 32 is provided between the flexible shell 3 and the scraping ring 22, a telescopic rod 31 is provided between the flexible shell 3 and the sliding sleeve 2, and a gap is left between the hard ring 33 and the lampshade 13. An annular accommodating cavity for accommodating impurities is formed between the flexible shell 3 and the sliding sleeve 2. The diffusion of impurities in the disinfection tube 11 is limited by the annular accommodating cavity to prevent secondary pollution during the cleaning process. The flexible shell 3 refers to a telescopic sleeve with a corrugated structure, which can be specifically realized by using silicone material.

[0050] As the sliding sleeve 2 moves axially along the lampshade 13, the flexible shell 3 expands and contracts during the cleaning process. Its corrugated structure adapts to the movement of the sliding sleeve 2 while maintaining a tight seal, effectively preventing impurities from escaping the annular cavity. Furthermore, the silicone material imparts excellent elasticity and wear resistance to the flexible shell 3, while the telescopic rod 31 maintains the stability and durability of the flexible shell 3 during use.

[0051] The hard ring 33 refers to an annular rigid structure provided at the left end of the flexible shell 3. Specifically, it can be implemented by a metal ring or an engineering plastic ring. It is used to provide a rigid support point when the flexible shell 3 is telescopically deformed. The telescopic rod 31 is fixedly provided on the hard ring 33 of the flexible shell 3. Specifically, it can be implemented by welding or bolting. It is used to ensure the telescopic path of the flexible shell 3. The two ends of the connecting rod 32 are respectively spherically hinged on the hard ring 33 and the scraper ring 22. The spherical hinge refers to the spherical hinge structure between the connecting rod 32, the hard ring 33 and the scraper ring 22. Specifically, it can be implemented by an articulated component with a spherical joint. It is used to convert the linear telescopic motion of the flexible shell 3 into the rotation of the scraper ring 22.

[0052] Specifically, when the flexible shell 3 expands and contracts during the cleaning process, the hard ring 33, under the action of the telescopic rod 31, maintains a linear motion trajectory along the telescopic rod 31, preventing motion deviation caused by localized deformation of the flexible material. The connecting rod 32 forms a spatial kinematic pair through the ball joint structure at both ends. As the hard ring 33 moves back and forth with the flexible shell 3, its axial displacement is converted into rotation of the scraper ring 22.

[0053] like Figure 1-Figure 7 As shown, the sealing assembly 4 includes a plurality of arc blocks 41, a guide block 42 and a guide groove 43. The plurality of arc blocks 41 are arranged at equal intervals around the lampshade 13, the guide block 42 is arranged on the arc block 41, and the guide groove 43 is arranged on the hard ring 33. The guide block 42 and the guide groove 43 slide together to make the plurality of arc blocks 41 move toward the lampshade 13. When the arc block 41 abuts the sealing plate at the left end of the lampshade 13, the plurality of arc blocks 41 form a circular ring to block the gap between the hard ring 33 and the lampshade 13.

[0054] The arc block 41 is a sealing unit with a curved surface, specifically made of engineering plastic. The guide block 42 is a raised structure provided on the back of the arc block 41, specifically a dovetail slider or a cylindrical guide post. It cooperates with the guide groove 43 of the hard ring 33 to achieve sliding limit. The guide groove 43 is a linear track channel provided on the hard ring 33. The guide groove 43 is arranged at an angle, gradually approaching the lampshade 13 from left to right. Through the cooperation of the guide block 42 and the guide groove 43, the arc block 41 gradually approaches the lampshade 13 as it moves from left to right.

[0055] like Figures 5 to 8 As shown, pins 44 are provided on the front and rear sidewalls of the guide block 42. When the arc block 41 abuts the lampshade 13, the pins 44 abut the right sidewall of the hard ring 33. The pins 44 are elastically structured stoppers, specifically spring-loaded steel balls. Their function is to generate contact pressure through elastic deformation, thereby forming a mechanical self-locking mechanism in the sealed position.

[0056] Specifically, when the flexible shell 3 drives the hard ring 33 to move to the left, the arc block 41 rests on the left sealing plate of the disinfection tube 11, and the guide block 42 slides along the trajectory of the guide groove 43. Multiple arc blocks 41 synchronously gather toward the axial direction of the lampshade 13. After the arc block 41 contacts the outer surface of the lampshade 13, a continuous annular sealing belt is formed. At this time, the pins 44 on the front and rear side walls of the guide block 42 extend and press against the right side wall of the hard ring 33 to form a stable contact. A mechanical limit is formed by the contact between the pins 44 and the hard ring 33 to prevent the arc block 41 from disengaging from the sealing position during vibration. As a result, the axial position of the sealing assembly 4 is locked, and the unlocking state is only allowed to be released under the action of a specific driving force.

[0057] like Figures 4 to 9 As shown, a limit rod 45 is provided on the arc block 41, and a limit block 46 is provided on the inner wall of the disinfection tube 11. The limit rod 45 is provided on the outer periphery of the arc block 41 in a direction perpendicular to the axis of the lampshade 13. Specifically, it can be implemented by welding a stainless steel rod to the arc block 41. The limit block 46 is a raised structure fixed to the right end of the inner wall of the disinfection tube 11. Specifically, it can be implemented by a boss, which is used to form a rigid block when the limit rod 45 moves to the position of the limit block 46. When the sliding sleeve 2 continues to move to the right, the limit rod 45 abuts the limit block 46. After the pin 44 retracts and passes the hard ring 33, the limit rod 45 and the limit block 46 cooperate to separate the arc block 41 from the surface of the lampshade 13 and return it to its initial position.

[0058] Specifically, when the flexible shell 3 drives the hard ring 33 to move rightward, the arc block 41 moves rightward with the hard ring 33. In the sealed state, the arc block 41 forms an annular seal with the surface of the lampshade 13. When the seal needs to be released, the hard ring 33 continues to move rightward until the limit rod 45 and the limit block 46 come into rigid contact, at which point the arc block 41 stops moving. Under the action of the drive assembly 5, the hard ring 33 continues to exert a rightward pulling force, forcing the ball 44 to contract. When the force of the ball 44 contracting exceeds the elastic threshold of the ball 44, the arc block 41 is mechanically blocked by the limit rod 45 and the limit block 46 and resets along the guide groove 43, allowing the arc block 41 to separate from the surface of the lampshade 13.

[0059] like Figures 4 to 6 As shown, the drive assembly 5 includes a drive rod 51 and a spring telescopic part. The right end of the disinfection tube 11 is set at one end of the drive rod 51, and the other end is provided with a spring telescopic part. The spring telescopic part passes through the hollow telescopic rod 31 and is connected to the hard ring 33. The spring telescopic part is initially at the maximum length.

[0060] Among them, the driving rod 51 can move along the axial direction of the lampshade 13. At least two groups of driving rods 51 are symmetrically arranged around the axis of the lampshade 13. The driving rod 51 adopts a telescopic driving source. The telescopic driving source is arranged on the sealing plate at the right end of the disinfection tube 11. The driving rod 51 passes through the mounting hole of the sliding sleeve 2. The left end of the driving rod 51 is provided with a spring telescopic part. The spring telescopic part passes through the hollow telescopic rod 31 and is connected to the right side of the hard ring 33. The spring telescopic part is initially in the longest state. The spring telescopic part refers to a telescopic mechanism with a built-in elastic element, which can be specifically realized by a structure in which a coil spring is nested in a telescopic sleeve.

[0061] When the sliding sleeve 2 moves along the surface of the lampshade 13 and encounters an increase in resistance due to accumulation of impurities, the hard ring 33 first absorbs the initial impact force through the contraction of the spring telescopic member. After the resistance continues to exceed the load threshold of the spring telescopic member, the spring telescopic member begins to shorten axially. At this time, the flexible shell 3 extends to the left under the drive of the spring telescopic member. The connecting rod 32 changes angle with the displacement of the hard ring 33, driving the scraper ring 22 to rotate around the axis, so that the scraper 23 rotates and scrapes the surface of the lampshade 13. When the impurities are removed and the movement resistance is reduced, the spring telescopic member returns to its initial state, driving the scraper ring 22 to rotate in the opposite direction and reset. The design of the spring telescopic member initially at its maximum length ensures the initial contact pressure between the cleaning ring 21 and the surface of the lampshade 13, while reserving a buffer stroke for the deformation of the spring telescopic member.

[0062] The scraper 23 and flexible housing 3 automatically switch cleaning modes based on the level of impurities adhering to the lampshade 13's surface. When stubborn impurities are encountered, the flexible housing 3, acting in conjunction with the scraper ring 22, produces a rotating scraping action, effectively removing accumulated dirt from the lampshade 13. Once cleaning is complete, the spring-loaded element automatically resets the scraper 23, returning it to its original position. This structure ensures effective cleaning while extending the life of the lampshade 13.

[0063] like Figure 4 and Figure 5 As shown, a stop ring 53 is mounted on the drive rod 51. As the spring member contracts, the flexible shell 3 extends. When the stop ring 53 abuts the right side of the sliding sleeve 2, it directly drives the sliding sleeve 2 to the left. The stop ring 53 is an annular stopper fixed to the outer wall of the drive rod 51. Specifically, it can be formed by welding a metal ring with an inner diameter that matches the outer diameter of the drive rod 51. This structure forms a mechanical stop surface through axial positioning, limiting the maximum extension of the flexible shell 3.

[0064] When the drive rod 51 controls the leftward movement of the sliding sleeve 2, the flexible shell 3 begins to extend, pulled by the spring expansion element, which then gradually contracts. As the spring expansion element contracts to the set length, the left end face of the stop ring 53 contacts the right end face of the sliding sleeve 2, forming a rigid stop. At this point, the spring expansion element stops contracting, and the extension of the flexible shell 3 is controlled within a preset range, preventing impurities from being squeezed out of the flexible shell 3. Simultaneously, the connecting rod 32 converts the linear displacement of the flexible shell 3 into rotation of the scraper ring 22.

[0065] like Figures 6 to 8 As shown, an annular cleaning cotton 24 is provided in the sliding sleeve 2, and the cleaning cotton 24 is in close contact with the lampshade 13. The cleaning cotton 24 is a closed annular cleaning part made of a flexible porous material. Specifically, a polyester fiber and polyurethane composite foam material can be used. It forms a close fit with the surface of the lampshade 13 through elastic compression deformation, and is used to absorb and remove residual impurities on the surface.

[0066] As the sliding sleeve 2 reciprocates along the length of the lampshade 13, the annular cleaning cotton 24 maintains contact with the outer surface of the lampshade 13 under radial pressure. The ring-shaped, closed structure of the cleaning cotton 24 covers the entire circumference of the lampshade 13. Its flexible material not only captures microbial debris and scale particles through its fiber pores during contact, but also elastically adapts to the slight irregularities of the lampshade 13's surface through elastic deformation. During the periodic motion of the sliding sleeve 2, the cleaning cotton 24 continuously removes impurities from the lampshade 13's surface through friction.

[0067] Working Principle: After the water purification device has been used for a period of time, impurities accumulated on the lampshade 13 will cause the light transmittance of the lampshade 13 to decrease. The outer surface of the lampshade 13 needs to be cleaned. The telescopic drive source is activated to control the drive rod 51 to move leftward. The spring telescopic member at the front end of the drive rod 51 pushes the hard ring 33, causing the flexible shell 3 to drive the sliding sleeve 2 to move leftward. The scraper 23 provided at the left end of the sliding sleeve 2 cuts the impurities on the lampshade 13, and the cleaning ring 21 provided at the left end of the sliding sleeve 2 cleans them.

[0068] As the cleaning progresses, the impurities accumulated on the cleaning ring 21 increase or scale is present on the lampshade 13, causing the movement resistance of the sliding sleeve 2 to increase. At this time, the hard ring 33 first absorbs the initial impact force through the contraction of the spring telescopic part. After the resistance continues to exceed the load threshold of the spring telescopic part, the spring telescopic part begins to shorten axially. At this time, the flexible shell 3 extends to the left driven by the spring telescopic part. The connecting rod 32 changes angle with the displacement of the hard ring 33, driving the scraper ring 22 to rotate around the lampshade 13, causing the scraper 23 to rotate and scrape the surface of the lampshade 13. At the same time, the scraper 23 will scrape the impurities on the cleaning ring 21. When the impurities are removed and the movement resistance is reduced, the spring telescopic part returns to its initial state, driving the scraper ring 22 to rotate in the opposite direction and reset.

[0069] When the surface of the lampshade 13 is cleaned, the arc block 41 abuts against the blocking plate at the left end of the lampshade 13, the flexible shell 3 continues to move, and the guide block 42 slides with the guide groove 43 to make the multiple arc blocks 41 move toward the lampshade 13. When the arc blocks 41 abut against the lampshade 13, the multiple arc blocks 41 form a ring to block the gap between the hard ring 33 and the lampshade 13. The pin 44 abuts against the right side wall of the hard ring 33, so that the arc blocks 41 form a mechanical self-locking in the sealing position, and the driving rod 51 moves to the right, driving the flexible shell 3 to move to the right to the initial position;

[0070] During the next cleaning operation, the drive rod 51 moves the flexible housing 3 to the right. As the flexible housing 3 drives the hard ring 33 to the right, the arc block 41 moves rightward along with the hard ring 33. The hard ring 33 continues to move rightward until the stop rod 45 and the stop block 46 come into rigid contact, at which point the arc block 41 stops. Drive assembly 5 exerts a continued rightward pulling force on the hard ring 33, forcing the ball 44 to contract. When the pulling force exceeds the elastic threshold of the ball 44, the arc block 41, mechanically blocked by the stop rod 45 and the stop block 46, returns to its original position along the guide groove 43, freeing it from the surface of the lampshade 13. The drive rod 51 then moves leftward again to resume cleaning.

[0071] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A water purification device comprising: A disinfection tube, an ultraviolet lamp and a lampshade, wherein the ultraviolet lamp is arranged in the lampshade, and the ultraviolet lamp sterilizes the water in the disinfection tube through the lampshade; characterized in that it also includes: A sliding sleeve is provided on the lampshade and slides along the length direction of the lampshade. A cleaning ring is provided on the left end surface of the sliding sleeve. The cleaning ring is in close contact with the outer surface of the lampshade. A scraping ring is provided on the left end surface of the sliding sleeve. The scraping ring is rotatably provided on the sliding sleeve. The scraping ring is provided with a plurality of scrapers that contact the lampshade. A flexible shell, wherein the right end of the flexible shell is fixedly disposed on the left end surface of the sliding sleeve, a gap is formed between the left end of the flexible shell and the lampshade, a hard ring is disposed on the left end of the flexible shell, a hollow telescopic rod is disposed between the hard ring and the sliding sleeve, the telescopic rod causes the left end of the flexible shell to approach or move away from the sliding sleeve along the axis of the lampshade, a driving mechanism is disposed between the left end of the flexible shell and the scraping ring, the driving mechanism comprising a connecting rod, the left end of the connecting rod being spherically hinged on the hard ring, and the right end of the connecting rod being spherically hinged on the scraping ring, and when the flexible shell is extended or retracted in the left and right directions, the driving mechanism causes the scraping ring to rotate; A sealing assembly is provided at the left end of the flexible shell. When the flexible shell abuts the left end of the disinfection tube, the sealing assembly blocks the gap between the flexible shell and the lampshade. The sealing assembly includes a plurality of arc blocks. The plurality of arc blocks are arranged at equal intervals around the lampshade. A guide block is provided on the arc block. A guide groove is provided on the hard ring. The guide block and the guide groove slide together to make the plurality of arc blocks move toward the lampshade. When the arc block abuts the lampshade, the plurality of arc blocks form a circular ring to block the gap between the hard ring and the lampshade. Balls are provided on the front and rear side walls of the guide block. When the arc block abuts the lampshade, the ball abuts the right side wall of the hard ring. The driving assembly is arranged on the right side of the disinfection tube, controlling the sliding sleeve to slide left and right. When the resistance to the movement of the cleaning ring increases, the driving assembly stretches the flexible shell to rotate the scraping ring. The driving assembly includes a driving rod and a spring telescopic part. One end of the driving rod is arranged on the right end of the disinfection tube, and the other end is provided with a spring telescopic part. The spring telescopic part passes through the telescopic rod and is connected to the hard ring. The spring telescopic part is initially at the maximum length.

2. A water purification device according to claim 1, characterized in that: The left end face of the cleaning ring is a conical slope, which gradually expands from left to right. Multiple scrapers are arranged on the scraping ring at equal intervals, and the contact position between the scrapers and the cleaning ring abuts the cleaning ring.

3. A water purification device according to claim 2, characterized in that, A limiting rod is arranged on the arc block, a limiting block is arranged on the inner wall of the disinfection tube, the limiting rod abuts against the limiting block, and the arc block overcomes the elasticity of the marble itself to reset.

4. A water purification device according to claim 3, characterized in that: A stop ring is provided on the driving rod. After the spring telescopic member contracts to a preset length, the stop ring abuts against the right side of the sliding sleeve.

5. A water purification device according to claim 1, characterized in that: The scraper is set at an angle, and the scraper ring rotates to push the impurities away from the cleaning ring.

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