Water purification equipment

Abstract

The invention relates to the technical field of water treatment, and particularly discloses water purification equipment which comprises a sliding sleeve, a cleaning ring, a scraping ring, a flexible shell, a sealing assembly and a driving assembly, the annular sliding sleeve is arranged on a lampshade in a sliding mode in the length direction of the lampshade, the cleaning ring and the rotatable scraping ring are arranged on the left end face of the sliding sleeve, and the inner surface of the cleaning ring is tightly attached to the lampshade; one end of the flexible shell is connected with the sliding sleeve, the two ends of the flexible shell transmit power through the telescopic rod, the telescopic direction of the flexible shell is limited through the telescopic rod, a connecting rod is arranged between the flexible shell and the scraping ring, the sealing assembly seals the gap when the flexible shell abuts against the disinfection pipe, and the driving assembly controls the flexible shell to stretch and retract according to sliding resistance of the sliding sleeve. According to the water purification equipment, different cleaning modes can be automatically switched to reduce damage, the state switching of the sealing assembly ensures that impurities are sealed when cleaning is completed, and secondary pollution is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and particularly 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 the key to ensuring high-quality water. When producing different types of drinking water such as beverages, it is necessary to purify tap water to improve water quality, remove impurities and effectively control various types of pollution. Traditional water purification technologies have certain limitations in dealing with complex water quality. Taking the reverse osmosis technology as an example, although it can effectively remove most impurities in water, at high salt concentrations, the membrane elements are prone to pollution and scaling, resulting in shortened service life and increased maintenance costs. Although the distillation method can obtain high-purity water, it consumes a huge amount of energy and has high operating costs.

[0003] During the process of water treatment, disinfection treatment has become a key link. Traditional water disinfection technologies such as chlorine disinfection and ozone disinfection have significant drawbacks. Chlorine disinfection will produce carcinogenic by-products such as trihalomethanes, and long-term drinking of chlorinated disinfected water may harm human health. Ozone disinfection requires complex equipment to maintain the ozone concentration, and residual ozone is prone to decomposition and cause secondary pollution. At the same time, some microorganisms develop drug resistance to chemical disinfectants, resulting in a decline in the disinfection effect. In addition, in industries with strict water quality requirements such as food and beverages, chemical residues may affect product quality, and high-temperature disinfection will destroy heat-sensitive components. The ultraviolet lamp disinfection technology can destroy the DNA / RNA structure of microorganisms through ultraviolet rays with a specific wavelength, making them lose their reproductive ability. It has the advantages of fast disinfection speed, no chemical residues, and no change in the chemical properties of water bodies, and can effectively address the limitations of traditional technologies, providing a reliable and sustainable solution for ensuring safe and high-quality water supply.

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

[0005] In the related prior art, when using an ultraviolet lamp for sterilization, dead bacteria bodies will accumulate on the outer shell of the ultraviolet lamp, and scale will accumulate on the surface of the ultraviolet lamp. As more impurities accumulate on the surface of the ultraviolet lamp, the light 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. Moreover, due to the different thicknesses and adhesion states of the impurities on the surface of the ultraviolet lamp, it is difficult for a flexible cleaning component to achieve effective cleaning, and the long-term use of a rigid cleaning component will damage the surface of the ultraviolet lamp. Summary of the Invention

[0006] The present invention provides a water purification device, aiming to solve the problems in the related art that when cleaning, it is necessary to drain the water in the disinfection tube to reduce pollution, and due to the different thicknesses and adhesion states of the impurities on the surface of the ultraviolet lamp, it is difficult for a flexible cleaning component to achieve effective cleaning, and the long-term use of a rigid cleaning component will damage the surface of the ultraviolet lamp.

[0007] A water purification device includes a disinfection tube, an ultraviolet lamp, and a lamp cover. It further includes a sliding sleeve that is sleeved on the lamp cover and slides along the length direction of the lamp cover. A cleaning ring is provided on the left end face of the sliding sleeve, and the cleaning ring is in close contact with the outer surface of the lamp cover. A scraping ring is provided on the left end face of the sliding sleeve, and the scraping ring is rotatably arranged on the sliding sleeve. A plurality of scraping blades in contact with the lamp cover are provided on the scraping ring. A flexible shell has its right end fixedly arranged on the left end face of the sliding sleeve, and there is a gap between the left end of the flexible shell and the lamp cover. The left end of the flexible shell approaches or moves away from the sliding sleeve along the axis of the lamp cover. A driving mechanism is provided between the left end of the flexible shell and the scraping ring. When the flexible shell expands and contracts in the left-right direction, the driving mechanism causes the scraping ring to rotate. A sealing component is provided at the left end of the flexible shell. When the flexible shell abuts against the left end of the disinfection tube, the sealing component blocks the gap between the flexible shell and the lamp cover. A driving component is provided on the right side of the disinfection tube to control the sliding sleeve to slide left and right. When the resistance to the movement of the cleaning ring increases, the driving component causes the flexible shell to extend and the scraping ring to rotate. By providing the sliding sleeve, the cleaning ring, the scraping ring, the sealing component, and the driving component, when the driving component pushes the sliding sleeve to move axially left along the lamp cover axis, the cleaning ring cleans the surface of the lamp cover. When encountering stubborn stains that cause an increase in the movement resistance, the flexible shell starts to axially extend, driving the scraping ring to rotate, and performing a spiral deep scraping on the lamp cover. After the cleaning is completed, the driving component moves to the right, and the flexible shell drives the sliding sleeve to reset, and the sealing component 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 strength but also avoids scratching the lamp cover. Moreover, by using the cooperation of the flexible shell and the scraping ring, it can ensure that the impurities to be cleaned will not spread and cause secondary pollution, and can also effectively clean different impurities on the lamp cover according to the situation. The design of the sealing component ensures that the impurities can smoothly enter the sealing component during the cleaning process and 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 plane, and the conical surface of the cleaning ring gradually expands from left to right. A plurality of scraping blades are arranged on the scraping ring at equal intervals in a circular shape, and the position where the scraping blade contacts the cleaning ring abuts against the cleaning ring.

[0009] By setting the contact position between the scraping blade and the cleaning ring to be in abutment, during the rotation of the scraping blade, the impurities accumulated on the surface of the cleaning ring are continuously scraped off. The dynamic contact between the scraping blade and the cleaning ring avoids the secondary accumulation of impurities at the edge of the cleaning ring. At the same time, the evenly distributed scraping blades cover the entire circumference of the lampshade, ensuring that there is no dead angle 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 approach or move 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-jointed on the hard ring, and the right end of the connecting rod is ball-jointed on the scraping ring.

[0011] By providing the hard ring, the movement deviation caused by the deformation of the flexible shell is avoided. The connecting rod forms a spatial kinematic pair through the ball-joint structures 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 the impurities.

[0012] Preferably, the sealing assembly includes a plurality of arc-shaped blocks, which are arranged around the lampshade at equal intervals. Guide blocks are provided on the arc-shaped blocks, and guide grooves are provided on the hard ring. The guide blocks are slidably matched with the guide grooves to make the plurality of arc-shaped blocks move towards the lampshade. When the arc-shaped blocks abut against the lampshade, the plurality of arc-shaped blocks form a circular ring to block the gap between the hard ring and the lampshade.

[0013] By providing a plurality of arc-shaped blocks, guide blocks and guide grooves, the gap is quickly sealed after the cleaning is completed to prevent the impurities in the flexible shell from overflowing. The inclination angle of the guide groove is set so that the arc-shaped blocks generate a radial displacement component during the movement, thereby realizing the rapid closing of the sealing surface within a limited axial stroke. The equal-spacing layout between the arc-shaped blocks ensures that the sealing pressure is evenly distributed, avoiding the leakage risk caused by local gaps.

[0014] Preferably, marbles are provided on the front and rear side walls of the guide block. 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-shaped block, and a limiting block is provided on the inner wall of the disinfection tube. The limiting rod abuts against the limiting block, and the arc-shaped block overcomes the self-elastic reset of the marble.

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

[0017] Preferably, a stop ring is provided on the driving rod. After the elastic telescopic member contracts to a preset length, the stop ring abuts against the right side of the driving ring.

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

[0019] By providing the cleaning cotton, the annular closed structure of the cleaning cotton can cover the entire circumferential area outside the lamp cover. Its flexible material can capture microbial residues and scale particles through the fiber pores during contact, and can also adapt to the minute unevenness on the surface of the lamp cover through elastic deformation.

[0020] Preferably, the scraping blade is inclined, and when the scraping ring rotates, the scraping blade pushes the impurities away from the cleaning ring.

[0021] Adopting the above technical solutions, the beneficial effects of the present invention are as follows: By providing the sliding sleeve, the cleaning ring, the scraping ring, the sealing component and the driving component, during cleaning, for ordinary impurities, the cleaning ring is used for cleaning, and the flexible cleaning ring reduces the damage to the lamp cover during the cleaning process. When impurities accumulate or there is scale, the scraping ring rotates to perform a spiral deep scraping on the lamp cover to ensure the cleaning effect. The cleaning cotton cleans the remaining impurities, and the state switching design of the sealing component ensures that the impurities can smoothly enter the flexible shell during the cleaning process and seals the impurities when the cleaning is completed to prevent secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the water purification device of the present invention.

[0023] Figure 2 is a schematic side view structure diagram of the water purification device of the present invention.

[0024] Figure 3 is a schematic diagram of the structure of the disinfection tube of the present invention.

[0025] Figure 4 is a schematic diagram of the structure of the lamp cover of the present invention.

[0026] Figure 5 is Figure 4 an enlarged schematic diagram of part A in

[0027] Figure 6 is a schematic diagram of the structure of the cleaning component of the present invention.

[0028] Figure 7 is Figure 6 an enlarged schematic diagram of part B in

[0029] Figure 8 is a schematic diagram of the structure of the sealing component of the present invention.

[0030] Figure 9 is Figure 8 an enlarged schematic view of part C in

[0031] Reference numerals: 11. Disinfection tube; 12. Ultraviolet lamp; 13. Lamp cover; 2. Sliding sleeve; 21. Cleaning ring; 22. Scraping ring; 23. Scraping blade; 24. Cleaning cotton; 3. Flexible shell; 31. Telescopic rod; 32. Connecting rod; 33. Rigid ring; 4. Sealing assembly; 41. Arc-shaped block; 42. Guide block; 43. Guide groove; 44. Ball; 45. Limiting rod; 46. Limiting block; 5. Driving assembly; 51. Driving rod; 53. Stopping ring. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] In the prior art, a plurality of disinfection tubes 11 are usually horizontally arranged on a bracket in an ultraviolet sterilization device. Water inlets and outlets are respectively arranged at both ends of the disinfection tube 11. A water inlet pipeline and a water outlet pipeline are connected to the outside of a plurality of water inlets and outlets. A lamp cover 13 is horizontally arranged in the disinfection tube 11, and an ultraviolet lamp 12 is arranged in the lamp cover 13. The ultraviolet lamp 12 sterilizes the water in the disinfection tube 11 through the lamp cover 13. However, after long-term use, bacterial residues and water scale will accumulate on the surface of the lamp cover 13, resulting in a reduction in light transmittance and affecting the sterilization effect. The traditional cleaning method requires manual wiping after draining the water body. Hard scraping tools are likely to damage the surface of the quartz lamp tube, while flexible cleaning devices are difficult to effectively remove stubborn stains, and impurities may flow back during the operation process, causing secondary pollution to the water body.

[0034] As Figures 1 to 7 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 lamp cover 13 along the length direction of the lamp cover 13. A cleaning ring 21 and a rotatable scraping ring 22 are arranged on the left end surface of the sliding sleeve 2. The inner surface of the cleaning ring 21 is in close contact with the lamp cover 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 the hollow telescopic rod 31, and the telescopic direction of the flexible shell 3 is restricted by the telescopic rod 31. A connecting rod 32 is arranged between the flexible shell 3 and the scraping ring 22. The sealing assembly 4 closes the gap when the flexible shell 3 abuts against 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 telescopic of the flexible shell 3 drives the scraping ring 22 to rotate and clean the surface of the lamp cover 13.

[0035] As Figures 4 to 6As shown in the figure, when the driving component 5 pushes the sliding sleeve 2 to move axially along the lamp cover 13, the cleaning ring 21 cleans the surface of the lamp cover 13. When encountering stubborn stains such as water scale that cause an increase in the moving resistance, the flexible shell 3 starts to axially extend, and drives the scraping ring 22 to rotate through the connecting rod action of the connecting rod 32, so that the scraping ring 22 performs a spiral deep scraping on the lamp cover 13. When the flexible shell 3 moves to the end of the disinfection tube 11, the sealing component 4 at its left end is squeezed and contracts towards the center, forming an annular sealing belt to block the gap. After the cleaning is completed, the driving component 5 moves in the reverse direction, and the sliding sleeve 2 resets to the initial position.

[0036] By setting the sliding sleeve 2, the cleaning ring 21 and the scraping ring 22, etc., it is possible to automatically remove impurities on the surface of the lamp cover 13 during the continuous water treatment process, keep the ultraviolet light transmittance stable. The combined use of the cleaning ring 21 and the scraping ring 22 can not only handle soft biofilms but also remove hardened water scale. The dynamic sealing component 4 ensures that impurities will not overflow into the disinfection tube 11 after the cleaning is completed, avoiding secondary pollution. The flexible driving structure protects the surface integrity of the lamp cover 13 while transmitting sufficient mechanical force, and extends the service life of the equipment.

[0037] As Figures 1 to 4 shown in the figure, the disinfection tube 11 is horizontally arranged on the support frame. Removable plugging plates are provided at both the left and right ends of the disinfection tube 11. The lamp cover 13 is coaxially inserted into the disinfection tube 11 through the plugging plates. One end of the lamp cover 13 is open, and the ultraviolet lamp 12 is installed inside the lamp cover 13. The light emitted by the ultraviolet lamp 12 radiates outward through the lamp cover 13 to sterilize the water flow in the disinfection tube 11. The design of the plugging plate not only facilitates the installation and removal of the lamp cover 13, but also ensures the sealing performance of the disinfection tube 11 to prevent water leakage. The design of one end of the lamp cover 13 being open facilitates the installation of the ultraviolet lamp 12, and the lamp cover 13 separates the ultraviolet lamp 12 from the water flow, so that the ultraviolet lamp 12 does not directly contact the water to improve the safety of use. The horizontal setting of the disinfection tube 11 makes the water flow more uniform in it, which is beneficial to improving the sterilization effect. In addition, the connection method between the plugging 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.

[0038] As Figures 4 to 6As shown, the sliding sleeve 2 refers to an annular moving part that wraps around the outer wall of the lampshade 13. The sliding sleeve 2 is sleeved on the outer side of the lampshade 13 and moves left and right along the lampshade 13 in 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 without hindrance. The left and right moving range of the sliding sleeve 2 is limited to ensure that its movement in 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 material, which has excellent corrosion resistance and mechanical strength, and can maintain the stability and reliability of the structure during long-term use, thereby extending the service life of the entire water purification equipment.

[0039] like Figures 6 to 9 As shown, a cleaning ring 21 and a scraping ring 22 are provided on the left end face of the sliding sleeve 2. The cleaning ring 21 is fixedly arranged on the sliding sleeve 2. The side of the cleaning ring 21 close to the lampshade 13 is tightly attached to the lampshade 13. The cleaning ring 21 is made of wear-resistant rubber and is used to scrape off the surface attachments of the lampshade 13. When the sliding sleeve 2 moves to the left, the cleaning ring 21 cleans the impurities on the surface of the lampshade 13.

[0040] The scraper ring 22 is rotatably arranged at the left end of the sliding sleeve 2, and its rotatable installation adopts a bearing connection. Specifically, a bearing seat can be arranged on the left end surface of the sliding sleeve 2, a bearing is installed in the bearing seat, and the scraper ring 22 is connected to the bearing through a rotating shaft, so that the scraper ring 22 is rotatably arranged.

[0041] In this installation mode, the scraper ring 22 can rotate freely around the rotating shaft, and the presence of the bearing also reduces the 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 arranged on the left end face of the scraper ring 22, and the plurality of scrapers 23 are arranged on the scraper ring 22 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, and the contact portion of the scraper 23 with the lampshade 13 is coated with a flexible film. The scraper 23 is arranged in an annular equal spacing, which means that the plurality of scrapers 23 are distributed at the same interval 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.

[0042] A plurality of scraping blades 23 are arranged on the scraping ring 22 at equal intervals. The surface of the scraping blade 23 in contact with the lamp cover 13 is closely attached to the lamp cover 13. This design ensures that the scraping blade 23 can evenly and comprehensively cover the surface of the lamp cover 13. Within a small rotation range, stubborn impurities on the lamp cover 13 can be effectively removed. A flexible film is coated on the contact part of the scraping blade 23 and the lamp cover 13, which not only enhances the adhesion of the scraping blade 23 but also reduces the wear of the scraping blade 23 on the surface of the lamp cover 13, protecting the integrity of the lamp cover 13. At the same time, the presence of the flexible film also enables the scraping blade 23 to better adapt to the minute unevenness on the surface of the lamp cover 13 during the scraping process, improving the cleaning effect.

[0043] As Figures 6 to 9 shown, the left end face of the cleaning ring 21 is inclined. The left end face of the cleaning ring 21 forms an inclined surface structure that gradually narrows from left to right, and its inclination angle range can be between 30° and 60°. During the axial movement of the sliding sleeve 2 along the lamp cover 13, the inclined left end face of the cleaning ring 21 guides impurities into the rotation path range of the scraping ring 22. The end face of the scraping blade 23 in contact with the cleaning ring 21 is an inclined surface, and the scraping blade 23 abuts against the cleaning ring 21. During the rotation of the scraping blade 23, the inclined surface at its end continuously contacts the inclined surface of the cleaning ring 21. This contact method can continuously remove the residual impurities attached to the surface of the cleaning ring 21 in real time.

[0044] Specifically, when the equally spaced scraping blades 23 rotate with the scraping ring 22, their ends remain in contact with the inclined surface of the cleaning ring 21, and continuously scrape off the impurities accumulated on the surface of the cleaning ring 21 during the rotation. The dynamic contact between the scraping blade 23 and the cleaning ring 21 avoids the secondary accumulation of impurities at the edge of the cleaning ring 21. At the same time, the evenly distributed scraping blades 23 cover the entire circumference of the lamp cover 13, ensuring that there are no dead corners in the cleaning operation.

[0045] As Figures 4 to 7 shown, the scraping blade 23 is inclined. The inclined setting of the scraping blade 23 means that the extension direction of the scraping blade 23 forms a non - perpendicular angle with the radial direction of the scraping ring 22. Specifically, it can be achieved by forming an inclined angle of 30° to 60° at the connection between the root of the scraping blade 23 and the scraping ring 22. This inclined angle enables the scraping blade 23 to form a directional chip - discharging trajectory during rotation.

[0046] When the scraping ring 22 is driven by the connecting rod 32 to rotate, the inclined scraping blade 23 remains in contact with the surface of the lamp cover 13. During the rotation, the peeled - off impurities are pushed to the left along the inclined direction of the scraping blade 23, avoiding the formation of a ring - shaped residue at the edge of the cleaning ring 21.

[0047] As Figures 4 to 6As shown in the figure, 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 rigid ring 33 is arranged at the left end of the flexible shell 3. A connecting rod 32 is arranged between the flexible shell 3 and the scraping ring 22. A telescopic rod 31 is arranged between the flexible shell 3 and the sliding sleeve 2. There is a gap between the rigid ring 33 and the lamp cover 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 restricted through 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 a silicone material.

[0048] When the sliding sleeve 2 moves axially along the lamp cover 13, the flexible shell 3 will undergo telescopic deformation during the cleaning process. Its corrugated structure can adapt to the movement of the sliding sleeve 2 and maintain good sealing performance, effectively preventing impurities from escaping outside the annular accommodating cavity. In addition, the selection of the silicone material endows the flexible shell 3 with good elasticity and wear resistance, and the telescopic rod 31 maintains the stability and durability of the flexible shell 3 during use.

[0049] The rigid ring 33 refers to an annular rigid structure arranged at the left end of the flexible shell 3, which can be specifically realized by using a metal ring or an engineering plastic ring, and is used to provide a rigid support point when the flexible shell 3 undergoes telescopic deformation. The telescopic rod 31 is fixedly arranged on the rigid ring 33 of the flexible shell 3, which can be specifically realized by using welding or bolt fastening methods, and is used to ensure the telescopic path of the flexible shell 3. Both ends of the connecting rod 32 are ball-jointed to the rigid ring 33 and the scraping ring 22 respectively. The ball joint means that the connecting rod 32 and the rigid ring 33 and the scraping ring 22 adopt a spherical hinge structure, which can be specifically realized by using a hinge component with a spherical joint, and is used to convert the linear telescopic movement of the flexible shell 3 into the rotation of the scraping ring 22.

[0050] Specifically, when the flexible shell 3 undergoes telescopic deformation during the cleaning process, the rigid ring 33 maintains a linear movement trajectory along the telescopic rod 31 under the action of the telescopic rod 31, avoiding movement deviation caused by local deformation of the flexible material. The connecting rod 32 forms a spatial kinematic pair through the ball joint structures at both ends. When the rigid ring 33 moves back and forth with the flexible shell 3, the axial displacement of the rigid ring 33 is converted into the rotation of the scraping ring 22.

[0051] As Figures 1 - 7 shown, the sealing assembly 4 includes a plurality of arc-shaped blocks 41, a guide block 42 and a guide groove 43. The plurality of arc-shaped blocks 41 are arranged equidistantly around the lamp cover 13. The guide block 42 is arranged on the arc-shaped block 41. The guide groove 43 is arranged on the rigid ring 33. The guide block 42 is slidably matched with the guide groove 43, so that the plurality of arc-shaped blocks 41 move towards the lamp cover 13. When the arc-shaped blocks 41 abut against the sealing plate at the left end of the lamp cover 13, the plurality of arc-shaped blocks 41 form a circular ring to block the gap between the rigid ring 33 and the lamp cover 13.

[0052] The arc block 41 refers to a sealing unit with a curved arc surface, which can be made of engineering plastics. The guide block 42 is a convex structure arranged on the back of the arc block 41, which can be a dovetail slider or a cylindrical guide column, and realizes sliding limit by cooperating with the guide groove 43 of the hard ring 33. Among them, the guide groove 43 refers to a linear track channel opened on the hard ring 33, and the guide groove 43 is inclined. The guide groove 43 gradually approaches 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 when moving from left to right.

[0053] like Figures 5 to 8 As shown, pins 44 are provided on the front and rear side walls of the guide block 42. When the arc block 41 abuts against the lampshade 13, the pins 44 abut against the right side wall of the hard ring 33. The pins 44 are limit components with an elastic structure, which can be realized by a spring-loaded steel ball. The function of the pins 44 is to generate contact pressure through elastic deformation and form a mechanical self-locking at the sealing position.

[0054] Specifically, when the flexible shell 3 drives the hard ring 33 to move to the left, the arc block 41 abuts against the left sealing plate of the disinfection tube 11, and the guide block 42 slides along the trajectory of the guide groove 43, and 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 out and abut 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.

[0055] 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, and can be realized by welding a stainless steel rod and the arc block 41. The limit block 46 refers to a protruding structure fixed to the right end of the inner wall of the disinfection tube 11, and can be realized 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 against the limit block 46, and after the pin 44 shrinks and passes over the hard ring 33, the limit rod 45 cooperates with the limit block 46 to make the arc block 41 separate from the surface of the lampshade 13 and reset to the initial position.

[0056] Specifically, when the flexible shell 3 drives the rigid ring 33 to move to the right, the arc-shaped block 41 moves to the right with the rigid ring 33. In the sealed state, the arc-shaped block 41 forms an annular seal with the surface of the lamp cover 13. When the seal needs to be released, the rigid ring 33 continues to move to the right until the limit rod 45 comes into rigid contact with the limit block 46. At this time, the arc-shaped block 41 stops moving. Under the action of the driving assembly 5, the rigid ring 33 continues to apply a pulling force to the right, forcing the ball 44 to contract. When the contraction force of the ball 44 exceeds the elastic threshold of the ball 44, the arc-shaped block 41 is reset along the guiding groove 43 under the mechanical block of the limit rod 45 and the limit block 46, so that the arc-shaped block 41 is separated from the surface of the lamp cover 13.

[0057] As Figures 4 to 6 shown, the driving assembly 5 includes a driving rod 51 and a spring telescopic member. One end of the driving rod 51 is arranged at the right end of the disinfection tube 11, and the other end is provided with a spring telescopic member. The spring telescopic member passes through the hollow telescopic rod 31 and is connected to the rigid ring 33. The elastic telescopic member is initially at the maximum length.

[0058] Among them, the driving rod 51 can move along the axis direction of the lamp cover 13. At least two groups of the driving rods 51 are symmetrically arranged around the axis of the lamp cover 13. The driving rod 51 adopts a telescopic driving source, and 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 member. The spring telescopic member passes through the hollow telescopic rod 31 and is connected to the right side surface of the rigid ring 33. The spring telescopic rod 31 is initially in the longest state. The spring telescopic member refers to a telescopic mechanism with an internal elastic element, and specifically can be realized by a structure in which a spiral spring is nested in a telescopic sleeve.

[0059] When the sliding sleeve 2 moves along the surface of the lamp cover 13 and encounters an increase in resistance due to impurity accumulation, the rigid ring 33 first absorbs the initial impact force through the contraction of the spring telescopic member. After the resistance continuously exceeds the load-bearing threshold of the spring telescopic member, the telescopic rod 31 begins to shorten axially. At this time, the flexible shell 3 elongates to the left under the drive of the telescopic rod 31. The connecting rod 32 generates an angular change with the displacement of the rigid ring 33, driving the scraping ring 22 to rotate around the axis, so that the scraping blade 23 rotates and scrapes the surface of the lamp cover 13. When the impurities are removed and the moving resistance decreases, the spring telescopic member returns to the initial state, driving the scraping ring 22 to rotate in the reverse direction and reset. The design that the elastic telescopic member is initially at the maximum length ensures the initial contact pressure between the cleaning ring 21 and the surface of the lamp cover 13, and at the same time reserves a buffer stroke for the deformation of the telescopic rod 31.

[0060] Function of automatically switching the cleaning mode by setting the wiper 23 and the flexible shell 3 according to the adhesion state of impurities on the surface of the lamp cover 13. When encountering stubborn impurities, the flexible shell 3 acts on the scraping ring 22 to generate a rotating scraping action, effectively removing the accumulated dirt on the surface of the lamp cover 13. After the cleaning is completed, the spring telescopic member automatically resets to return the wiper 23 to its original position. This structure not only ensures the cleaning effect but also extends the service life of the lamp cover 13.

[0061] As Figure 4 and Figure 5 shown, a stop ring 53 is provided on the drive rod 51. While the elastic telescopic member contracts, the flexible shell 3 elongates. When the stop ring 53 abuts against the right side of the sliding sleeve 2, it directly drives the sliding sleeve 2 to move leftward. The stop ring 53 refers to an annular limiting structure fixed on the outer wall of the drive rod 51, which can be specifically formed by welding a metal ring, and its inner diameter matches the outer diameter of the drive rod 51. This structure forms a mechanical stop surface through axial positioning to limit the maximum elongation of the flexible shell 3.

[0062] When the drive rod 51 controls the sliding sleeve 2 to move leftward, the flexible shell 3 begins to elongate under the traction of the elastic telescopic member, and the elastic telescopic member gradually contracts. As the elastic telescopic member contracts to a set length, the left end face of the stop ring 53 contacts the right end face of the sliding sleeve 2 to form a rigid limit. At this time, the elastic telescopic member stops contracting, and the elongation of the flexible shell 3 is controlled within a preset range to prevent impurities in the flexible shell 3 from being extruded. At the same time, the connecting rod 32 converts the linear displacement of the flexible shell 3 into the rotation of the scraping ring 22.

[0063] As Figures 6 to 8 shown, an annular cleaning cotton 24 is provided inside the sliding sleeve 2. The cleaning cotton 24 is in close contact with the lamp cover 13. The cleaning cotton 24 is a closed annular cleaning member made of a flexible porous material, which can be specifically made of a composite foaming material of polyester fiber and polyurethane. It forms a tight fit with the surface of the lamp cover 13 through elastic compression deformation, and is used to adsorb and remove residual impurities on the surface.

[0064] When the sliding sleeve 2 reciprocates along the length direction of the lamp cover 13, the annular cleaning cotton 24 always remains in contact with the outer surface of the lamp cover 13 under the action of radial pressure. The annular closed structure of the cleaning cotton 24 can cover the entire circumferential area of the lamp cover 13. Its flexible material can not only capture microbial remains and scale particles through the fiber pores during contact, but also adapt to the minute unevenness on the surface of the lamp cover 13 through elastic deformation. During the periodic movement of the sliding sleeve 2, the cleaning cotton 24 continuously peels off impurities on the surface of the lamp cover 13 through frictional action.

[0065] Working principle: After the water purification device has been used for a period of time, the accumulation of impurities on the lampshade 13 will cause the light transmittance of the lampshade 13 to decrease, and the outer surface of the lampshade 13 needs to be cleaned. The telescopic driving source is started to control the driving rod 51 to move to the left. The spring telescopic member at the front end of the driving rod 51 pushes the hard ring 33 to make the flexible shell 3 drive the sliding sleeve 2 to move to the left. The scraper 23 is arranged at the left end of the sliding sleeve 2 to cut the impurities on the lampshade 13, and the cleaning ring 21 arranged at the left end of the sliding sleeve 2 cleans them. As the cleaning progresses, the impurities accumulated on the cleaning ring 21 increase or scale exists 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 telescopic rod 31 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; 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 and the guide groove 43 slide and cooperate, so that the multiple arc blocks 41 move toward the lampshade 13. When the arc block 41 abuts 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, and the pin 44 abuts against the right side wall of the hard ring 33, so that the arc block 41 forms 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; During the next cleaning, the driving rod 51 moves the flexible shell 3 to the right. When the flexible shell 3 drives the hard ring 33 to move to the right, the arc block 41 moves to the right along with the hard ring 33. The hard ring 33 continues to move to the right until the limit rod 45 and the limit block 46 are in rigid contact. At this time, the arc block 41 stops moving. Under the action of the driving assembly 5, the hard ring 33 continues to apply a pulling force to the right, forcing the ball 44 to shrink. When the pulling force exceeds the elastic threshold of the ball 44, the arc block 41 is reset along the guide groove 43 under the mechanical blocking of the limit rod 45 and the limit block 46, so that the arc block 41 is separated from the surface of the lampshade 13. The driving rod 51 moves to the left again to clean again.

[0066] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A water purification device, comprising: Disinfection tube, ultraviolet lamp and lampshade; characterized in that it further comprises: A sliding sleeve is sleeved on the lampshade and slides along the length direction of the lampshade. A cleaning ring is arranged on the left end face of the sliding sleeve, and the cleaning ring is in close contact with the outer surface of the lampshade. A scraping ring is arranged on the left end face of the sliding sleeve, and the scraping ring is rotatably arranged on the sliding sleeve. A plurality of scraping blades in contact with the lampshade are arranged on the scraping ring; A flexible shell, the right end of the flexible shell is fixedly arranged on the left end face of the sliding sleeve, there is a gap between the left end of the flexible shell and the lampshade, the left end of the flexible shell approaches or moves away from the sliding sleeve along the axis of the lampshade, and a driving mechanism is arranged between the left end of the flexible shell and the scraping ring. When the flexible shell expands and contracts in the left-right direction, the driving mechanism makes the scraping ring rotate; A sealing component is arranged at the left end of the flexible shell. When the flexible shell abuts against the left end of the disinfection tube, the sealing component seals the gap between the flexible shell and the lampshade; A driving component is arranged on the right side of the disinfection tube to control the left-right sliding of the sliding sleeve. When the resistance of the cleaning ring to move increases, the driving component makes the flexible shell extend and makes the scraping ring rotate.

2. The water purification device according to claim 1, wherein, 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 scraping blades are arranged on the scraping ring at equal intervals in a ring shape, and the position where the scraping blade contacts the cleaning ring abuts against the cleaning ring.

3. The water purification device according to claim 1, characterized in that, A hard ring is arranged at the left end of the flexible shell, and a hollow telescopic rod is arranged between the hard ring and the sliding sleeve. The telescopic rod makes the left end of the flexible shell approach or move 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-jointed on the hard ring, and the right end of the connecting rod is ball-jointed on the scraping ring.

4. The water purification device according to claim 3, wherein The sealing component includes a plurality of arc-shaped blocks, and the plurality of arc-shaped blocks are arranged at equal intervals around the lampshade. Guide blocks are arranged on the arc-shaped blocks, and guide grooves are arranged on the hard ring. The guide blocks are slidably matched with the guide grooves to make the plurality of arc-shaped blocks move towards the lampshade. When the arc-shaped blocks abut against the lampshade, the plurality of arc-shaped blocks form a ring to block the gap between the hard ring and the lampshade.

5. A water purification device according to claim 4, characterized in that, Elastic balls are arranged on the front and rear side walls of the guide block. When the arc-shaped block abuts against the lampshade, the elastic balls abut against the right side wall of the hard ring.

6. A water purification device according to claim 5, characterized in that, A limiting rod is arranged on the arc-shaped block, and a limiting block is arranged on the inner wall of the disinfection tube. The limiting rod abuts against the limiting block, and the arc-shaped block overcomes the elasticity of the elastic ball and resets itself.

7. A water purification device according to claim 3, characterized in that, The driving component includes a driving rod and a spring telescopic member. One end of the driving rod is arranged at the right end of the disinfection tube, and the other end is provided with a spring telescopic member. The spring telescopic member passes through the telescopic rod and is connected to the hard ring, and the elastic telescopic member is initially at the maximum length.

8. A water purification device according to claim 7, characterized in that, A stop ring is arranged on the driving rod. After the elastic telescopic member contracts to a preset length, the stop ring abuts against the right side of the driving ring.

9. A water purification device according to claim 1, characterized in that, A circular cleaning cotton is arranged in the sliding sleeve, and the cleaning cotton is in close contact with the lampshade.

10. A water purification device according to claim 1, characterized in that, The scraping blade is arranged obliquely, and the rotation of the scraping ring makes the scraping blade push the impurities away from the cleaning ring.

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