Ultraviolet disinfection device for sewage treatment

Abstract

The present invention discloses an ultraviolet disinfection device for sewage treatment, which relates to the technical field of sewage treatment and includes an installation assembly, wherein the installation assembly includes a lamp holder, a through hole, an electrode spring, a working lamp tube, a shaft, an end plate, a bevel gear, and a reset torsion spring. Through holes are provided at both ends of the lamp holder along the length direction, and the electrode spring is fixed to the inner wall of the through hole. During use, the present invention optimizes the linear open channel of the prior art into a volute-shaped disinfection channel structure with a spiral channel inside, thereby extending the water flow while reducing the floor space. By arranging ultraviolet lamps in an array on the outer side of the inner ring plate and attaching a reflector to the inner side of the outer ring plate, the utilization rate of ultraviolet light is improved, and the irradiation time of the ultraviolet lamp is increased, so that the water flowing through the spiral channel is subjected to secondary disinfection, killing as many bacteria as possible, and solving the problems of insufficient ultraviolet dose, incomplete killing, and bacterial revival.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an ultraviolet disinfection device for sewage treatment. Background Art

[0002] Disinfection is the last process in sewage regeneration and treatment, and is also the most important barrier to ensure sewage recycling and public health safety. Ultraviolet disinfection, as a safe, reliable, economical and convenient disinfection method, is increasingly valued and is used in the disinfection of urban sewage and drinking water. When bacteria are irradiated by ultraviolet rays, the energy of the ultraviolet spectrum is absorbed by nucleic acids, an important component of the bacteria, destroying the structure of the nucleic acid. Ultraviolet rays with a wavelength of 200-295nm have bactericidal ability, and ultraviolet rays with a wavelength of 260nm have the strongest bactericidal ability. When the energy of ultraviolet rays reaches the lethal dose for bacteria and maintains a certain irradiation time, the bacteria will die in large numbers.

[0003] The ultraviolet light source is a high-pressure quartz mercury lamp. There are mainly two types of sterilization equipment: immersion type and surface type. The former places the lamp tube in water, with high utilization rate of radiation energy and good sterilization ability, but the immersion installation method makes it difficult to replace damaged lamp tubes, and the discarded lamp tubes after replacement cannot be collected and processed; the latter has a simple structure, but because the reflector absorbs ultraviolet rays and scatters light, the sterilization effect is not as good as the former.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an ultraviolet disinfection device for sewage treatment is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an ultraviolet disinfection device for sewage treatment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultraviolet disinfection device for sewage treatment, comprising an installation assembly, wherein the installation assembly includes a lamp holder, a through-hole, an electrode shrapnel, a working lamp tube, a shaft rod, an end plate, a bevel gear and a reset torsion spring, through-holes are provided at both ends of the lamp holder along the length direction, and an electrode shrapnel is fixed to the inner wall of the through-hole, and the working lamp tube is clamped with the electrode shrapnel inside the through-holes at both ends of the lamp holder, the tail end of the lamp holder is fixedly connected to the shaft rod, and the lamp holder is rotatably matched with the end plates on both sides through the shaft rod, one end of the shaft rod is coaxially connected to the bevel gear, and the other end of the shaft rod is clamped to the reset torsion spring.

[0007] Furthermore, the lamp holder array is distributed on the disk surface of the disc ring, and the disc ring is a hollow ring structure, and the edge of the disk surface of the disc ring is provided with a protrusion and a slope inclined inward, and the disc ring disk surface array is provided with a mounting groove, and the opening edge of the mounting groove is fixed to the end plate.

[0008] Furthermore, a bracket is fixed to the edge of the disc ring, and a quick-change assembly is fixedly installed at the end of the bracket. The quick-change assembly includes a motor, a shell and a guide plate. The motor bolt is fixed to the top of the end of the bracket, and the output end of the motor is fixedly connected to the shell, and guide plates are symmetrically fixed on both sides of the front of the shell.

[0009] Furthermore, the quick-change assembly also includes an electric cylinder, a telescopic rod and a slide. The electric cylinder is fixed with a bolt at the middle end of the back of the shell, and the output end of the electric cylinder is fixedly connected to the telescopic rod, and the root of the telescopic rod is limited by the guide plates on both sides through the slide.

[0010] Furthermore, the quick-change assembly also includes a bevel rack and a top rod. A bevel rack is fixed to the top of the end of the telescopic rod, and the bevel rack is rotated toward the lamp holder inside the end plates on both sides by engaging with the teeth on the outer edge of the bevel gear. A top rod is fixed to the bottom of the middle end of the telescopic rod, and the top rod is an "L"-shaped structure.

[0011] Furthermore, the disc-shaped ring is fixed to the top end face of the disinfection channel, and a spiral flow channel is provided inside the disinfection channel, and the outer edge of the volute-shaped structure of the disinfection channel is connected to a water inlet.

[0012] Furthermore, the disinfection channel is fixed to the top end surface of the concrete base, and a water outlet is opened in the middle of the concrete base, and the water outlet is connected to the water inlet through a spiral channel.

[0013] Furthermore, an outer ring plate is provided on the outside of the disinfection channel, and a reflective sheet is attached to the inner wall of the outer ring plate, and an ultraviolet intensity sensor is provided at the position of the reflective sheet corresponding to the lamp holder.

[0014] Furthermore, an inner ring plate is provided on the inner side of the disinfection channel, a connecting port is provided at the opening of the inner ring plate cavity, and a recovery tank is provided in the inner interlayer of the inner ring plate.

[0015] Furthermore, a feeding assembly is fixedly installed on the inner side of the inner ring plate, and the feeding assembly includes a material rack, an outer ring, a bottom support, an inner ring, a spare lamp tube and a boss. An outer ring is provided on the outside of the material rack, and the bottom end of the outer ring is fixedly connected to the bottom support, and the end of the bottom support facing away from the outer ring is fixed to the inner ring. Spare lamp tubes are arranged in a ring on the bottom support, and a boss is provided at the corresponding connecting port of the bottom support.

[0016] The present invention provides an ultraviolet disinfection device for sewage treatment, which has the following beneficial effects:

[0017] 1. During the use of the present invention, the electric cylinder also synchronously drives the "L"-shaped push rod at the bottom of the middle end to move forward through the output end telescopic rod. The spare lamp tube squeezes the failed working lamp tube through the through hole at the rear of the lamp holder and is separated from the through hole at the front of the lamp holder. The newly replaced spare lamp tube establishes an electrical connection with the electrode springs in the through holes at both ends of the lamp holder and is re-immersed in water to resume operation under the reset action of the torsion spring. The ejected failed working lamp tube deviates to the side under the action of the inwardly inclined slope provided on the edge of the disc-shaped ring disk, and further falls back into the recovery groove provided on the inner ring plate under the action of gravity, effectively making up for the true energy required for replacing the damaged ultraviolet lamp tube. In order to maintain the long-term operation of the ultraviolet sterilization system, the present application recycles the failed working lamp tubes while replacing the spare lamp tubes to prevent the failed ultraviolet lamp tubes from falling into the water and causing pollution. In addition, the present application does not set the ultraviolet lamp tube at the spiral channel connecting the water outlet and the water inlet, and provides a boss on the bottom bracket of the material rack at the corresponding position, so that under the action of gravity, the nearby spare lamp tubes can automatically make up for the missing position of the lamp tube that has participated in the replacement operation, so that the spare lamp tubes have sufficient margin to meet the multiple replacement operations at any position of the ultraviolet lamp array, effectively reducing the frequency of maintenance personnel replenishing new spare lamp tubes.

[0018] 2. During the use of the present invention, the electric cylinder drives the bevel rack at the top of the end forward through the telescopic rod at the output end, and the bevel rack is engaged with the bevel gear coaxial with the end of the shaft rod, thereby driving the lamp holder to rotate through the end plates on both sides of the installation groove of the tail shaft rod, so that the working lamp tube originally immersed vertically in the water is rotated and switched to a horizontal position and out of the water surface. The present application provides an ultraviolet intensity sensor on the reflective sheet corresponding to the position of the ultraviolet lamp array, which can identify the position of the damaged ultraviolet lamp tube and automatically replace it through the cooperation of the quick-change component and the installation component. Under the cooperation of the bevel rack at the top of the telescopic rod end and the bevel gear at the end of the shaft rod of the lamp holder, the working lamp tube immersed vertically in the water is rotated and switched to a horizontal position. By lifting the damaged lamp tube out of the water surface for subsequent disassembly and replacement, the technical problem of the difficulty in replacing the submerged lamp tube in the prior art is solved.

[0019] 3. During the use of the present invention, the present applicant optimizes the linear open channel of the prior art into a volute-shaped disinfection channel structure with a spiral channel inside, thereby reducing the footprint while extending the water flow range. By arranging ultraviolet lamps in an array on the outer side of the inner ring plate and attaching a reflective sheet on the inner side of the outer ring plate, the utilization rate of ultraviolet light is improved, and the irradiation time of the ultraviolet lamp is increased, thereby performing secondary disinfection on the water flowing through the spiral channel, killing as many bacteria as possible, and solving the problems of insufficient ultraviolet dosage, incomplete killing, and bacterial revival. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the device of the present invention;

[0021] Figure 2 It is a schematic cross-sectional structural diagram of the device of the present invention;

[0022] Figure 3 This is a schematic diagram of the split structure of the device of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the feeding assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the disc-shaped ring of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation assembly structure of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the quick-change assembly of the present invention.

[0027] Figure: 1. Mounting assembly; 101. Lamp holder; 102. Through hole; 103. Electrode spring; 104. Working lamp tube; 105. Shaft; 106. End plate; 107. Bevel gear; 108. Reset torsion spring; 2. Disc ring; 3. Mounting slot; 4. Bracket; 5. Quick-change assembly; 501. Motor; 502. Housing; 503. Guide plate; 504. Electric cylinder; 505. Telescopic rod; 506. Slide; 507 , bevel rack; 508, push rod; 6, disinfection channel; 7, water inlet; 8, concrete base; 9, water outlet; 10, outer ring plate; 11, reflector; 12, ultraviolet intensity sensor; 13, inner ring plate; 14, connecting port; 15, recovery trough; 16, feeding assembly; 1601, material rack; 1602, outer ring; 1603, bottom support; 1604, inner ring; 1605, spare lamp; 1606, boss. DETAILED DESCRIPTION

[0028] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] See also Figures 1 to 6The present invention provides a technical solution: an ultraviolet disinfection device for sewage treatment, including a mounting assembly 1, the mounting assembly 1 including a lamp holder 101, a through hole 102, an electrode spring 103, a working lamp tube 104, a shaft 105, an end plate 106, a bevel gear 107 and a reset torsion spring 108. Through holes 102 are provided through both ends of the lamp holder 101 along the length direction, and the electrode spring 103 is fixed to the inner wall of the through hole 102. The working lamp tube 104 is clamped to the inside of the through hole 102 at both ends of the lamp holder 101 through the electrode spring 103. The tail end of the lamp holder 101 is fixedly connected to a shaft 105, and the lamp holder 101 is rotatably engaged with the end plates 106 on both sides through the shaft 105. One end of the shaft 105 is coaxially connected to a bevel gear 107, and the other end of the shaft 105 is clamped with a return torsion spring 108. The lamp holders 101 are distributed in an array on the disk surface of the disc ring 2. The disc ring 2 has a hollow annular structure, and the edge of the disk surface of the disc ring 2 is provided with a protrusion and a slope inclined inward. The disk surface of the disc ring 2 is provided with an array of mounting grooves 3, and the opening edge of the mounting grooves 3 is fixed to the end plates 106.

[0030] The specific operation is as follows: when the ultraviolet intensity sensor 12 senses that a certain lamp in the ultraviolet lamp array is damaged, the motor 501 drives the housing 502 to rotate to the position of the damaged ultraviolet lamp on the disc ring 2, and then the electric cylinder 504 drives the bevel rack 507 at the top of the end forward through the output end telescopic rod 505. The bevel rack 507 is engaged with the bevel gear 107 coaxial with the end of the shaft 105, and then drives the lamp holder 101 to rotate through the end plates 106 on both sides of the installation groove 3 at the rear shaft 105, rotating the working lamp 104 originally immersed in the water vertically to a horizontal position. The present application provides an ultraviolet intensity sensor 12 on the reflective sheet 11 corresponding to the position of the ultraviolet lamp array, which can identify the position of the damaged ultraviolet lamp and automatically replace it through the cooperation of the quick-change assembly 5 and the installation assembly 1. The working lamp tube 104, which is vertically immersed in the water, is rotated to a horizontal position under the cooperation of the top bevel rack 507 at the end of the telescopic rod 505 and the bevel gear 107 at the end of the shaft rod 105 at the tail of the lamp holder 101. By lifting the damaged lamp out of the water for subsequent disassembly and replacement, the technical problem of the difficulty in replacing submerged lamps in the prior art is solved.

[0031] See also Figures 5 to 7, a bracket 4 is fixed on the edge of the disc ring 2, and a quick-change assembly 5 is fixedly installed at the end of the bracket 4. The quick-change assembly 5 includes a motor 501, a shell 502 and a guide plate 503. The motor 501 is bolted to the top of the end of the bracket 4, and the output end of the motor 501 is fixedly connected to the shell 502, and the guide plates 503 are symmetrically fixed on both sides of the front of the shell 502. The quick-change assembly 5 also includes an electric cylinder 504, a telescopic rod 505 and a slide 506. The electric cylinder 504 is fixed to the middle end of the back of the shell 502 with bolts, and The output end of the electric cylinder 504 is fixedly connected to a telescopic rod 505, and the base of the telescopic rod 505 is limited by a slide 506 and cooperates with the guide plates 503 on both sides. The quick-change assembly 5 also includes a bevel rack 507 and a push rod 508. The top end of the telescopic rod 505 is fixed with a bevel rack 507, and the bevel rack 507 is engaged with the outer edge of the bevel gear 107 to rotate toward the lamp holder 101 inside the end plates 106 on both sides. The bottom of the middle end of the telescopic rod 505 is fixed with a push rod 508, and the push rod 508 is an "L"-shaped structure.

[0032] The specific operation is as follows: the electric cylinder 504 also synchronously drives the "L"-shaped push rod 508 at the bottom of the middle end to move forward through the output end telescopic rod 505, and the push rod 508 extends into the gap of the inner ring 1604 of the material rack 1601 and pushes the spare lamp tube 1605 out of the gap of the outer ring 1602. The spare lamp tube 1605 squeezes the failed working lamp tube 104 through the rear through hole 102 of the lamp holder 101 and makes it detach from the front through hole 102 of the lamp holder 101. When the spare lamp tube 1605 replaces the failed working lamp tube 104 to reach the working position and establishes electrical connection with the electrode springs 103 in the through holes 102 at both ends of the lamp holder 101, the pushed-out failed working lamp tube 104 deviates to the side under the action of the inwardly inclined slope provided on the edge of the disc ring 2, and further falls back into the recovery groove 15 provided on the inner ring plate 13 under the action of gravity, and finally falls back into the recovery groove 15 provided on the inner ring plate 13 under the action of the torsion spring. 01 reset, use the newly replaced spare lamp 1605 to continue working, effectively make up for the vacuum period required for replacing the damaged ultraviolet lamp, and maintain the long-term operation of the ultraviolet sterilization system. The present application recycles the failed working lamp 104 while replacing the spare lamp 1605 to prevent the failed ultraviolet lamp from falling into the water and causing pollution. In addition, the present application does not set an ultraviolet lamp at the spiral channel connecting port 14 of the water outlet 9 and the water inlet 7, and provides a boss 1606 on the bottom bracket 1603 of the material rack 1601 at the corresponding position, so that under the action of gravity, the nearby spare lamp 1605 can automatically make up for the missing position of the lamp that has participated in the replacement operation, so that the spare lamp 1605 has sufficient margin to meet multiple replacement operations at any position of the ultraviolet lamp array, effectively extending the frequency of maintenance personnel replenishing new spare lamps 1605 and improving the applicability of the device;

[0033] See also Figures 1 to 7, the disc ring 2 is fixed to the top end face of the disinfection channel 6, and a spiral flow channel is provided inside the disinfection channel 6, and the outer edge of the volute structure of the disinfection channel 6 is connected with a water inlet 7, the disinfection channel 6 is fixed to the top end face of the concrete base 8, and a water outlet 9 is opened in the middle of the concrete base 8, and the water outlet 9 is connected to the water inlet 7 through a spiral channel, an outer ring plate 10 is provided on the outside of the disinfection channel 6, and a reflective sheet 11 is attached to the inner wall of the outer ring plate 10, and an ultraviolet intensity sensor 12 is provided at the position of the reflective sheet 11 corresponding to the lamp holder 101, an inner ring plate 13 is provided on the inside of the disinfection channel 6, and a connecting port 14 is provided at the opening of the cavity of the inner ring plate 13, and A recovery groove 15 is provided in the inner interlayer of the inner ring plate 13, and a feeding assembly 16 is fixedly installed on the inner side of the inner ring plate 13. The feeding assembly 16 includes a material rack 1601, an outer ring 1602, a bottom bracket 1603, an inner ring 1604, a spare lamp 1605 and a boss 1606. The outer ring 1602 is provided on the outer side of the material rack 1601, and the bottom end of the outer ring 1602 is fixedly connected to the bottom bracket 1603, and the end of the bottom bracket 1603 away from the outer ring 1602 is fixed to the inner ring 1604. Spare lamps 1605 are arranged in a ring on the bottom bracket 1603, and a boss 1606 is provided on the bottom bracket 1603 corresponding to the communication port 14;

[0034] The specific operation is as follows: this application optimizes the linear open channel of the existing technology into a volute-shaped disinfection channel 6 structure with a spiral channel inside, which reduces the floor space while extending the water flow range. By arranging ultraviolet lamps in an array on the outside of the inner ring plate 13 and attaching a reflector 11 to the inside of the outer ring plate 10, the utilization rate of ultraviolet light is improved, and the irradiation time of the ultraviolet lamp is increased. The water flowing through the spiral channel is disinfected for the second time to kill as many bacteria as possible, solving the problems of insufficient ultraviolet dosage, incomplete killing, and bacterial revival.

[0035] In summary, when using the ultraviolet disinfection device for sewage treatment, the present application optimizes the linear open channel of the prior art into a volute-shaped disinfection channel 6 structure with a spiral channel inside, which reduces the floor space while extending the water flow range, and by arranging ultraviolet lamps in an array on the outer side of the inner ring plate 13 and attaching a reflector 11 to the inner side of the outer ring plate 10, the utilization rate of ultraviolet light is improved, and the irradiation time of the ultraviolet lamp is increased, and the water flowing through the spiral channel is disinfected for the second time to kill as many bacteria as possible, solving the problems of insufficient ultraviolet dose, incomplete killing, and bacterial revival. When the ultraviolet intensity sensor 12 senses that a certain lamp in the ultraviolet lamp array is damaged, the motor 501 drives the shell 502 to rotate to the damaged part on the disc ring 2. The ultraviolet lamp is in the position, and then the electric cylinder 504 drives the bevel rack 507 at the top of the end forward through the output end telescopic rod 505, and the bevel rack 507 is in contact and engaged with the bevel gear 107 coaxial with the end of the shaft 105, thereby driving the lamp holder 101 to rotate through the end plates 106 on both sides of the installation groove 3 of the tail shaft 105, and the working lamp tube 104 originally vertically immersed in the water is rotated to a horizontal position and out of the water surface. The present application provides an ultraviolet intensity sensor 12 on the reflective sheet 11 corresponding to the position of the ultraviolet lamp array, which can identify the position of the damaged ultraviolet lamp and automatically replace it through the cooperation of the quick-change component 5 and the installation component 1. At the top of the telescopic rod 505, the bevel rack 507 and the tail of the lamp holder 101 are connected. With the cooperation of the bevel gear 107 at the end of the shaft 105, the working lamp tube 104 immersed vertically in water is rotated and switched to a horizontal position. By lifting the damaged lamp tube out of the water for subsequent disassembly and replacement, the technical problem of the difficulty in replacing the submerged lamp tube in the prior art is solved. The electric cylinder 504 also synchronously drives the "L"-shaped top rod 508 at the bottom of the middle end to move forward through the output end telescopic rod 505. The top rod 508 extends into the gap of the inner ring 1604 of the material rack 1601 and pushes the spare lamp tube 1605 out of the gap of the outer ring 1602. The spare lamp tube 1605 squeezes the failed working lamp tube 104 through the rear through hole 102 of the lamp holder 101 and makes it detached from the front through hole 102 of the lamp holder 101. When the spare lamp tube 1605 replaces the failed working lamp tube When the lamp tube 104 reaches the working position and establishes electrical connection with the electrode springs 103 in the through holes 102 at both ends of the lamp holder 101, the ejected failed working lamp tube 104 deviates to the side under the action of the inwardly inclined slope provided on the edge of the disc ring 2, and further falls back into the recovery groove 15 provided in the inner ring plate 13 under the action of gravity. Finally, the lamp holder 101 is reset under the action of the torsion spring, and the newly replaced spare lamp tube 1605 is used to continue working, effectively making up for the vacuum period required for replacing the damaged ultraviolet lamp tube, and maintaining the long-term operation of the ultraviolet sterilization system. The present application recycles the failed working lamp tube 104 while replacing the spare lamp tube 1605 to prevent the failed ultraviolet lamp tube from falling into the water and causing pollution. In addition,This application does not install a UV lamp at the spiral channel connecting the water outlet 9 and the water inlet 7 14. Instead, a boss 1606 is provided on the base 1603 of the material rack 1601 at the corresponding position. Under the action of gravity, the nearby spare lamp 1605 can automatically fill the position where the lamp that has already been replaced is missing. This ensures that there is sufficient spare lamp 1605 to meet the needs of multiple replacement operations at any position in the UV lamp array, effectively reducing the frequency of maintenance personnel replenishing new spare lamps 1605 and improving the applicability of the device.

[0036] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various implementations with various modifications as suited for specific applications.

Claims

1. An ultraviolet disinfection device for sewage treatment, comprising a mounting assembly (1), characterized in that: The mounting assembly (1) comprises a lamp holder (101), a through hole (102), an electrode spring (103), a working lamp tube (104), a shaft (105), an end plate (106), a bevel gear (107) and a reset torsion spring (108). Through holes (102) are provided at both ends of the lamp holder (101) along the length direction, and the inner wall of the through hole (102) is fixed with an electrode spring (103), and the working lamp tube (104) is clamped inside the through holes (102) at both ends of the lamp holder (101) through the electrode spring (103). The tail end of the lamp holder (101) is fixedly connected to the shaft (105), and the lamp holder (101) is rotatably matched with the end plates (106) on both sides through the shaft (105). The shaft ( 105) is coaxially connected to a bevel gear (107) at one end, and a reset torsion spring (108) is clamped at the other end of the shaft (105), the lamp holders (101) are arrayed on the disk surface of the disc ring (2), and the disc ring (2) is a hollow annular structure, and the edge of the disk surface of the disc ring (2) is provided with a protrusion and a slope inclined inward, the disc ring (2) disk array is provided with a mounting groove (3), and the opening edge of the mounting groove (3) is fixed to the end plate (106), a bracket (4) is fixed to the edge of the disc ring (2), and a quick-change assembly (5) is fixedly installed at the end of the bracket (4), the quick-change assembly (5) includes a motor (501), a housing (502) and a guide plate (503), the motor (501) is bolted to the top of the end of the bracket (4), and the output end of the motor (501) is fixedly connected to the housing (502), and guide plates (503) are symmetrically fixed on both sides of the front of the housing (502). The quick-change assembly (5) also includes an electric cylinder (504), a telescopic rod (505) and a slide (506). The middle end of the back of the housing (502) is bolted to the electric cylinder (504), and the output end of the electric cylinder (504) is fixedly connected to the telescopic rod (505), and the root of the telescopic rod (505) is limitedly matched with the guide plates (503) on both sides through the slide (506). The quick-change assembly (5) also includes a bevel rack (507) and a push rod (508). The top of the end of the telescopic rod (505) A bevel rack (507) is fixed, and the bevel rack (507) is rotated and transmitted to the lamp holder (101) inside the end plates (106) on both sides by meshing with the outer edge teeth of the bevel gear (107). A top rod (508) is fixed to the bottom of the middle end of the telescopic rod (505), and the top rod (508) is in an "L"-shaped structure. The disc ring (2) is fixed to the top end face of the disinfection channel (6), and a spiral flow channel is provided inside the disinfection channel (6), and the outer edge of the volute structure of the disinfection channel (6) is connected to the water inlet (7). The disinfection channel (6) is fixed to the top end face of the concrete base (8), and a water outlet (9) is provided in the middle of the concrete base (8), and the water outlet (9) is connected to the water inlet (7) through a spiral channel.

2. The ultraviolet disinfection device for sewage treatment according to claim 1, characterized in that: An outer ring plate (10) is provided on the outside of the disinfection channel (6), and a reflective sheet (11) is attached to the inner wall of the outer ring plate (10), and an ultraviolet intensity sensor (12) is provided at a position of the reflective sheet (11) corresponding to the lamp holder (101).

3. The ultraviolet disinfection device for sewage treatment according to claim 2, characterized in that: An inner ring plate (13) is provided inside the disinfection channel (6), a communication port (14) is provided at the opening of the cavity of the inner ring plate (13), and a recovery groove (15) is provided in the inner interlayer of the inner ring plate (13).

4. The ultraviolet disinfection device for sewage treatment according to claim 3, characterized in that: A feeding assembly (16) is fixedly mounted on the inner side of the inner ring plate (13), and the feeding assembly (16) comprises a material rack (1601), an outer ring (1602), a bottom support (1603), an inner ring (1604), a spare lamp tube (1605) and a boss (1606). The outer side of the material rack (1601) is provided with an outer ring (1602), and the bottom end of the outer ring (1602) is fixedly connected to the bottom support (1603), and the end of the bottom support (1603) facing away from the outer ring (1602) is fixed to the inner ring (1604). Spare lamp tubes (1605) are arranged in a ring on the bottom support (1603), and a boss (1606) is provided on the bottom support (1603) corresponding to the connecting opening (14).

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