Positioning structure of ultraviolet cavity cleaning mechanism
Patent Information
- Application Number
- CN202421136990.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-23
Smart Images
Figure CN222402721U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detachable ultraviolet cavity, in particular to a positioning structure of an ultraviolet cavity cleaning mechanism. Background Art
[0002] The detachable UV cavity with cleaning is mainly composed of the cavity main pipe, end cover, end cover fasteners, end cover seal, cleaning mechanism, quartz sleeve, UV lamp, drive screw, motor, bearing, drive screw seal, coupling, etc. Structurally, at least one quartz sleeve and one drive screw are distributed in the UV cavity main pipe. The UV lamp is installed in the quartz sleeve. The drive screw is fixed to the end cover of the cavity main pipe through bearings or other sliding fits and seals. The quartz sleeve is fixed to the end cover through seals and fasteners. There is a nut on the drive screw that runs back and forth along the surface of the quartz sleeve with the cleaning mechanism to wipe the quartz sleeve. For the later maintenance and cleaning of the equipment, at least one end of the end cover is detachable, and the connection form of the end cover is flange connection or sanitary clamp connection.
[0003] With the development of technology, the power of UV lamps is getting bigger and bigger. The power of a single medium-pressure UV lamp can reach 12KW, and the length of the lamp is about 1000mm. Low-pressure UV lamps are longer due to their own characteristics. For example, the length of a 32O lamp is more than 1500mm, and the length of its cavity is more than 1600mm. How to ensure the assembly accuracy of the UV cavity main tube, end cover, drive screw and quartz sleeve under this length so that the cleaning mechanism can run smoothly, especially the drive screw and quartz sleeve of the cleaning mechanism of a lamp equipment are unilateral eccentric structures, which will increase the force on the quartz sleeve.
[0004] If the end cover is a clamp connection, the sealing surface of the sealing gasket is only 4-5mm away from the inner and outer walls of the clamp joint, the size is compact and the sealing surface cannot be damaged. Secondly, the clamp connection is fastened by clamping the chuck. The chuck fastening bolt is tangent to the outer circle of the main pipe clamp joint. The number of bolts is 1 or 2, which makes it difficult to ensure the assembly accuracy of the UV chamber main pipe, clamp end cover, drive screw and quartz sleeve.
[0005] The clamp structure increases the positioning accuracy between components and the difficulty of maintenance for later users. Although the connection structure is simple and small in size, it is technically difficult to use and maintain. Utility Model Content
[0006] In order to make up for the above shortcomings, the utility model provides a positioning structure for an ultraviolet cavity cleaning mechanism, which aims to ensure that the end cover will not fall off when a single person installs the clamp-type end cover and the clamp, thereby improving the assembly efficiency. In the later stage of equipment operation, the customer can use the latch and related structures to disassemble and assemble the ultraviolet cavity by themselves while still maintaining the assembly accuracy of related components.
[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a positioning structure of an ultraviolet cavity cleaning mechanism, comprising a main pipe, two end covers respectively installed at the left and right ends of the main pipe through a clamp, one or more quartz sleeves inserted in the main pipe, and a cleaning mechanism for cleaning the quartz sleeve; a sealing gasket is arranged between the end cover and the main pipe, the two end covers are a left end cover and a right end cover, an ultraviolet lamp is inserted in the quartz sleeve, the outer side wall of the left end of the quartz sleeve is fixedly connected to the left end cover through a left end sealing component, and the outer side wall of the right end of the quartz sleeve is fixedly connected to the left end cover through a left end sealing component. The side wall is fixedly connected to the right end cap through the right end sealing assembly. The left end of the quartz sleeve passes through the left end cap to form a left mounting hole, and the right end of the quartz sleeve passes through the right end cap to form a right mounting hole. A positioning mechanism is provided on the top of the outer wall of the end cap and the main pipe. The positioning mechanism includes a mounting plate with a hole and a crooked nail plug inserted in the mounting plate hole. The mounting plate is vertically arranged on the top of the main pipe. The crooked nail plug is J-shaped, one end of which passes through the mounting plate and the other end is inserted in the hook hole of the end cap. The left hook hole is located on the left end cap, and the right hook hole is located on the right end cap. The end cap and the main pipe can be positioned by the crooked nail plug, and the main pipe and the end cap can be pre-connected by two free arms, one long and one short. The end cap can be positioned and supported by the mounting plate, which is convenient for the installation and positioning of the quartz sleeve and the screw.
[0008] Furthermore, one end of the crooked nail pin passing through the mounting plate is a threaded end, and a locking nut is arranged after the threaded end passes through the mounting plate. The gap between the end cover and the main pipe can be accurately controlled by screwing the nut in, which facilitates the gradual installation of the quartz sleeve and the screw rod and their corresponding sealing mechanism. The whole process can be completed calmly and steadily, the gap can be adjusted at will, and the installation can be completed by one person.
[0009] Furthermore, the end of the crooked pin inserted into the hook hole of the end cover is a hook, the axial length of the hook is greater than the axial depth of the hook hole, and the axis of the hook hole and the axis of the crooked pin passing through one end of the mounting plate are located in the same vertical plane. The mounting plate is arranged at the top of the main pipe and the crooked pin is inserted into the end cover and its auxiliary mechanism, which is a fishing state, and all corresponding accessories can be positioned. The crooked pin has a margin after being inserted into the hook hole, which is beneficial to the redundancy of the overall connection and avoids the inconvenience caused by the cramped distance during use due to being too compact.
[0010] Furthermore, the radial cross section of the plug hook is hexagonal, the radial cross section of the plug hook hole is hexagonal, and the outer side of the plug hook is matched with the inner surface of the plug hook hole. The hexagonal cross section can prevent the end cover from swinging, ensuring that the end cover and the crook pin are relatively stable.
[0011] Furthermore, one end of the threaded end is also provided with a positioning notch, the positioning notch is connected to the threaded section, the positioning notch corresponds to the hole position of the mounting plate, and the inner wall of the hole of the mounting plate is provided with a protrusion that matches the positioning notch. The setting of the positioning notch can ensure the stability of the connection between the main pipe and the crooked nail pin.
[0012] Furthermore, the end cap, main pipe and sealing gasket are respectively provided with positioning notches, and the inner concave wall of the positioning notch fits and contacts the outer wall of the threaded end. The positioning notch is set to clearly mark the positions of all components that need to be fixed, and aligns them closely according to the outer wall of the crooked nail pin, making the entire installation system more complete, the operation process is simple and clear, and a "fool-proof" assembly is formed, which no longer requires too much experience, technology, and measuring tools, making the work simple and standardized.
[0013] Furthermore, the cleaning mechanism includes a screw rod arranged parallel to the quartz sleeve and a cleaning ring brush arranged on the screw rod. The cleaning ring brush is sleeved on the quartz sleeve. The cleaning ring brush is connected to the screw rod through a nut. The two ends of the screw rod are respectively connected to the left end cover and the right end cover through a screw rod seal.
[0014] Furthermore, the screw rod is located on one side of the left end cover and is connected to the motor through a coupling, and the motor is fixedly connected to the left end cover through a bolt rod.
[0015] Furthermore, the turning pin passes through the joint of the clamp, and after the assembly is completed and the assembly accuracy is guaranteed, the pin can be pulled out and the locking screw of the clamp can be tightened with a torque wrench.
[0016] Furthermore, the mating positions of the two arc-shaped bodies of the clamp are provided with a clearance gap for the crooked nail pin to pass through, thereby ensuring that the clamp can be effectively clamped to meet the sealing requirements without pulling out the nail pin.
[0017] The utility model has the following beneficial effects:
[0018] 1. With the participation of the turning pin, the assembly accuracy of the main pipe, clamp-type end cover, quartz sleeve and driving screw of the ultraviolet chamber is simplified and reduced. After maintenance by non-professionals, they can be reassembled by themselves, and the cleaning mechanism can be ensured to run smoothly.
[0019] 2. The positioning accuracy is ensured by using small tools, turning pins, mounting plates and clearance gaps. The gradual tightening of the fastening nuts can ensure that the end covers and clamps will not fall off when installed by one person, thereby improving assembly efficiency and ensuring installation accuracy.
[0020] 3. In the later stage of equipment operation, customers can use the turning pins and related structures to disassemble and assemble the UV cavity by themselves, and the assembly accuracy of related parts can be maintained. The cleaning mechanism can run smoothly and reduce the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A three-dimensional diagram of a positioning structure of an ultraviolet cavity cleaning mechanism proposed by the utility model;
[0022] Figure 2 This is a schematic diagram of the right end surface structure of a positioning structure of an ultraviolet cavity cleaning mechanism proposed by the utility model;
[0023] Figure 3 This is a schematic diagram of the left end surface structure of a positioning structure of an ultraviolet cavity cleaning mechanism proposed by the utility model.
[0024] Legend:
[0025] 1 main pipe, 2 clamp, 3 left end cover, 4 left end sealing assembly, 6 motor, 7 coupling, 9 screw seal, 10 sealing gasket, 11 screw, 12 quartz sleeve, 13 UV lamp, 14 cleaning ring brush, 15 right end cover, 17 right end sealing assembly, 18 locking nut, 19 crooked nail pin, 191 locking thread, 192 hook, 193 positioning notch, 20 mounting plate, 21 positioning notch, 152 right hook hole, 153 right mounting hole, 32 left hook hole, 33 left mounting hole. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Reference Figures 1 to 3 The utility model provides an embodiment: a positioning structure of an ultraviolet cavity cleaning mechanism, comprising a main pipe 1, two end covers respectively installed at the left and right ends of the main pipe 1 through a clamp 2, at least one quartz sleeve 12 inserted in the main pipe 1, and a cleaning mechanism for cleaning the quartz sleeve 12;
[0028] A sealing gasket 10 is provided between the end cover and the main pipe 1. The two end covers are a left end cover 3 and a right end cover 15. The quartz sleeve 12 is inserted with an ultraviolet lamp 13. The outer wall of the left end of the quartz sleeve 12 is fixedly connected to the left end cover 3 through a left end sealing component 4. The outer wall of the right end of the quartz sleeve 12 is fixedly connected to the right end cover 15 through a right end sealing component 17. The left end of the quartz sleeve 12 passes through the left end cover 3 to form a left mounting hole 33. The right end of the quartz sleeve 12 passes through the left end cover 3 to form a left mounting hole 33. The right end cover 15 forms a right mounting hole 153; a positioning mechanism is provided on the top of the outer side wall of the end cover and the main pipe 1, and the positioning mechanism includes a mounting plate 20 with a hole and a crooked nail pin 19 inserted into the hole of the mounting plate 20. The mounting plate 20 is vertically arranged on the top of the main pipe 1, and the crooked nail pin 19 is J-shaped, one end of which passes through the mounting plate 20, and the other end is inserted into the hook hole of the end cover. The left hook hole 32 is located on the left end cover 3, and the right hook hole 152 is located on the right end cover 15.
[0029] like Figure 2 , 3 As shown in the figure, one end of the crooked nail plug 19 passing through the mounting plate 20 is a threaded end 191, and the threaded end 191 is provided with a locking nut 18 after passing through the mounting plate 20. One end of the crooked nail plug 19 inserted into the hook hole of the end cover is a hook 192, and the axial length of the hook 192 is greater than the axial depth of the hook hole, and the axis of the hook hole and the axis of the end of the crooked nail plug 19 passing through the mounting plate 20 are located in the same vertical plane. The radial cross section of the hook 192 is a hexagon, the radial direction of the hook hole is a hexagon, and the outer side surface of the hook 192 is adapted to the inner surface of the hook hole.
[0030] like Figure 2 , 3 As shown in the figure, a positioning notch 193 is also provided at one end of the threaded end 191, and the positioning notch 193 is connected to the threaded section. The positioning notch 193 corresponds to the hole position of the mounting plate 20, and the inner wall of the hole of the mounting plate 20 is provided with a protrusion adapted to the positioning notch 193.
[0031] The end cap, main pipe 1 and sealing gasket 10 are respectively provided with positioning notches 21, and the inner concave wall of the positioning notch fits and contacts the outer wall of the threaded end 191. The positioning notch is provided to clearly mark the positions of all components that need to be fixed, and to align them closely according to the outer side wall of the crooked nail pin, so that the entire installation system is more complete and the linear accuracy is guaranteed.
[0032] like Figure 1As shown in , the cleaning mechanism includes a screw rod 11 arranged in parallel with the quartz sleeve 12 and a cleaning ring brush 14 arranged on the screw rod 11, the cleaning ring brush 14 is sleeved on the quartz sleeve 12, the cleaning ring brush 14 is connected to the screw rod 11 through a nut, and the two ends of the screw rod 11 are respectively connected to the left end cover 3 and the right end cover 15 through a screw rod seal 9. The screw rod 11 is located on one side of the left end cover 3 and is connected to the motor 6 through a coupling 7, and the motor 6 is fixedly connected to the left end cover 3 through bolts.
[0033] The pin 19 passes through the joint of the clamp 2. After the assembly is completed and the assembly accuracy is ensured, the pin 19 can be pulled out and the locking screw of the clamp 2 can be tightened with a torque wrench. Another solution is to provide a gap for the pin 19 to pass through at the matching position of the two arc-shaped bodies of the clamp 2, so as to ensure that the clamp can be effectively clamped to meet the sealing requirements without pulling out the pin 19.
[0034] like Figure 1 As shown in , the relative positions are as follows:
[0035] The left end cap 3 and the right end cap 15 are installed at both ends of the main pipe 1 through the clamp 2. There is at least one quartz sleeve 12 inside. The ultraviolet lamp 13 is installed in the quartz sleeve 12. The two ends of the quartz sleeve 12 are sealed and fixed on the left and right end caps through the quartz sleeve left end sealing component 4 and the quartz sleeve right end sealing component 17. The lead screw 11 is installed in the main pipe 1. The left end of the lead screw and the clamp-type left end cap 3 are sealed by the lead screw seal 9. The outside is fixed by the bearing. The head of the lead screw 11 is connected to the output shaft of the motor 6 through the coupling 7. The tail end of the lead screw 11 is sealed and fixed on the right end cap 15 through the lead screw seal component 9. The lead screw 11 passes through the ball slider to drive the cleaning ring brush 14. The cleaning mechanism includes a nut and a cleaning ring brush 14. The cleaning mechanism is sleeved on the quartz sleeve 12. The motor 6 is installed on the outer wall of the left end cap 3 through a bolt rod. When the motor rotates, it drives the lead screw to rotate, and the cleaning mechanism on the lead screw wipes back and forth along the quartz sleeve to clean the surface of the quartz sleeve.
[0036] A specific embodiment:
[0037] like Figure 1 The structure shown in the figure selects a UV cavity of a lamp tube, the length of the UV lamp tube is 1500mm, the length of the main tube is 1600mm, and the cleaning stroke is 1550mm. In order to ensure the relative position accuracy between the main tube, left and right end covers, quartz sleeve, and lead screw, as shown in the figure, Figure 2 , Figure 3As shown, after the clamp joints are welded at both ends of the main pipe, they are fixed and aligned on the machine tool, and then the positioning notches 21 for alignment are milled on the clamp joints, and two mounting pieces 20 are welded at both ends. The mounting pieces 20 are welded on the main pipe according to the position, and the machine tool positioning is used to ensure the dimensional accuracy and straightness of the positioning notches 21 and mounting pieces 20 at both ends of the main pipe. A through hole is cut by laser on the positioning mounting piece, and the shape of the hole is arc at the top and bottom, and straight edges on the left and right sides. In the embodiment, the positioning mounting piece has a thickness of 6mm, a hole diameter of 6±0.05mm, and a width of 5±0.05mm on the left and right straight edges of the hole.
[0038] The left end cover 3 and the right end cover 15 are aligned on a machine tool to machine the positioning notch 21, the hook hole, the quartz sleeve 12 and the mounting hole of the screw rod 11.
[0039] The shape of the toggle pin 19 is J-shaped, and the bending diameter is determined by the position size between the left hook hole 32 (same as the right hook hole 152) on the end cover and the positioning mounting plate 20 hole on the main pipe. The diameter of the toggle pin 19 is 6mm and matches the 6mm arc clearance of the positioning mounting plate 20. The head of the toggle pin 19 is processed with an M5 locking thread 191 and is used in conjunction with the locking nut 18. Near the tail of the thread, the diameter of 6mm is milled into two planes with a distance of 5mm for clearance matching with the two straight-side planes of the hole on the positioning mounting plate 20. The axial width of the two planes on the toggle pin 19 is 1mm smaller than the thickness of the positioning mounting plate. Its function is that the locking nut 18 can effectively lock and lie flat against the positioning mounting plate 20. The hook 192 is processed into a rhombus. The hook 192 is clearance matched with the left hook hole 32 and the right hook hole 152, and is processed into a rhombus to improve the matching accuracy.
[0040] The right mounting hole 153 and the left mounting hole 33 are mounting holes where the quartz sleeve 12 is exposed on the end cover and are used to mount the ultraviolet lamp tube 13 .
[0041] The assembly process is as follows:
[0042] Step 1: The clamp-type right end cover 15 and the sealing gasket 10 are placed flat on the clamp joint of the main pipe 1, and all the positioning notches 21 are aligned;
[0043] Step 2: The hook 192 of the bend nail plug 19 is inserted into the right hook hole 152 on the clamp-type right end cover 15, and the locking thread 191 and the flat end of the bend nail plug 19 are inserted into the hole on the positioning installation piece 20 on the main pipe 1. The locking thread 191 is completely exposed from the positioning installation piece 20, and the locking nut 18 is installed and tightened for pre-tightening;
[0044] Step 3: After completing step 2, the clamp-type right end cover 15 and the sealing gasket 10 will not fall off, and the installer can take the clamp 2 for pre-assembly;
[0045] Step 4: After further alignment and confirmation by the end cap's own gravity, install the clamp 2 and lock it until the two planes of the clamp 2 are against the turning nail pin 19;
[0046] Step 5: After confirming the alignment, loosen the locking nut 18, pull out the pin 19, and further tighten the clamp nut. Since the clamp chuck is divided into two halves and is non-circular, the clamp end cover gap and the main pipe gap will not deviate during the tightening process; (When a clearance gap is set at the clamp joint, the pin 19 can be left intact)
[0047] Step 6: Install the screw seal assembly 9 supported by the screw tail end;
[0048] Step 7: Insert the lead screw 11 together with the cleaning ring brush 14 in the cleaning mechanism into the tail end support lead screw sealing assembly 9;
[0049] Step 8: The screw installation hole on the clamp-type left end cover 3 passes through the screw 11 and is flush with the clamp joint of the main pipe 1 together with the sealing gasket 10;
[0050] Step 9: Insert the hook 192 of the bend nail plug 19 into the left hook hole 32 on the clamp-type left end cover 3, insert the locking thread 191 and the flat end of the bend nail plug 19 into the hole on the positioning installation piece 20 on the main pipe 1, and completely expose the locking thread 191 from the positioning installation piece 20, and install and tighten the locking nut 18;
[0051] Step 10: After completing step 10, the clamp-type right end cover 15 and the sealing gasket 10 will not fall off, and the installer can take the clamp 2;
[0052] Step 11: After further alignment and confirmation by the end cover's own gravity, install the clamp 2 and lock it until the two planes of the clamp 2 are against the turning nail pin 19;
[0053] Step 12: After confirming the alignment, loosen the locking nut 18, pull out the pin 19, and then further tighten the clamp nut according to the specified torque. Since the clamp chuck is divided into two halves and is non-circular, the clamp-type end cover gap and the main pipe gap will not deviate during the tightening process;
[0054] Step 13: Install the screw seal assembly 9 and the bearing assembly;
[0055] Step 14: Install the quartz sleeve 12, the quartz sleeve left end sealing component 4 and the quartz sleeve right end sealing component 17;
[0056] Step 15: Install the coupling 7 and the motor assembly 6;
[0057] Step 16: Install the connecting wires and other accessories.
[0058] After the installation is completed, water is added and the machine is powered on for testing and cleaning. It runs smoothly according to the set functions over a cleaning length of 1500mm without any abnormal noise.
[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A positioning structure for an ultraviolet cavity cleaning mechanism, characterized in that The invention comprises a main pipe (1), two end caps respectively mounted on the left and right ends of the main pipe (1) through a clamp (2), one or more quartz sleeves (12) inserted into the main pipe (1), and a cleaning mechanism for cleaning the quartz sleeves (12); a sealing gasket (10) is arranged between the end caps and the main pipe (1); the two end caps are a left end cap (3) and a right end cap (15); an ultraviolet lamp tube (13) is inserted into the quartz sleeve (12); the outer wall of the left end of the quartz sleeve (12) is fixedly connected to the left end cap (3) through a left end sealing component (4); the outer wall of the right end of the quartz sleeve (12) is fixedly connected to the right end cap (15) through a right end sealing component (17); the left end of the quartz sleeve (12) passes through the left end cap (3) to form a left mounting hole (33); and the right end of the quartz sleeve (12) passes through the right end cap (15) to form a right mounting hole (153); A positioning mechanism is provided at the top of the outer wall of the end cover and the main pipe (1), the positioning mechanism comprising a mounting plate (20) provided with a hole and a crooked nail plug pin (19) inserted into the hole of the mounting plate (20), the mounting plate (20) being vertically arranged at the top of the main pipe (1), the crooked nail plug pin (19) being J-shaped, one end of which passes through the mounting plate (20) and the other end of which is inserted into the hook hole of the end cover, the left hook hole (32) being located at the left end cover (3), and the right hook hole (152) being located at the right end cover (15).
2. The positioning structure of an ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: One end of the crooked nail plug pin (19) passing through the mounting plate (20) is a threaded end (191), and a locking nut (18) is arranged on the threaded end (191) after passing through the mounting plate (20).
3. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: One end of the crooked nail plug pin (19) inserted into the hook hole of the end cover is a plug hook (192), the axial length of the plug hook (192) is greater than the axial depth of the plug hook hole, and the axis of the plug hook hole and the axis of the end of the crooked nail plug pin (19) passing through the installation plate (20) are located in the same vertical plane.
4. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 3, characterized in that: The radial cross section of the plug hook (192) is hexagonal, the radial cross section of the plug hook hole is hexagonal, and the outer side surface of the plug hook (192) is matched with the inner surface of the plug hook hole.
5. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 2, characterized in that: One end of the threaded end (191) is also provided with a positioning notch (193), the positioning notch (193) is connected to the threaded section, the positioning notch (193) corresponds to the position of the hole of the mounting plate (20), and the inner wall of the hole of the mounting plate (20) is provided with a protrusion that matches the positioning notch (193).
6. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: The end cover, the main pipe (1) and the sealing gasket (10) are respectively provided with positioning notches (21), and the concave inner wall of the positioning notch is in contact with the outer wall of the threaded end (191).
7. The positioning structure of an ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: The cleaning mechanism comprises a screw rod (11) arranged parallel to the quartz sleeve (12) and a cleaning ring brush (14) arranged on the screw rod (11); the cleaning ring brush (14) is sleeved on the quartz sleeve (12); the cleaning ring brush (14) is connected to the screw rod (11) through a nut; and two ends of the screw rod (11) are respectively connected to a left end cover (3) and a right end cover (15) through a screw rod seal (9).
8. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 7, characterized in that: The screw rod (11) is located on one side of the left end cover (3) and is connected to the motor (6) via a coupling (7); the motor (6) is fixedly connected to the left end cover (3) via a bolt rod.
9. The positioning structure of an ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: The crooked nail pin (19) passes through the joint of the clamp (2).
10. The positioning structure of the ultraviolet cavity cleaning mechanism according to claim 1, characterized in that: A clearance notch for the crooked nail pin (19) to pass through is provided at the mating positions of the two arc-shaped bodies of the clamp (2).