WO2024060704A1

WO2024060704A1 - Ultraviolet sterilizer having power-off protection functionality

Info

Publication number: WO2024060704A1
Application number: PCT/CN2023/099937
Authority: WO
Inventors: 钱建波
Original assignee: 浙江钻邦水处理设备有限公司
Priority date: 2022-09-21
Filing date: 2023-06-13
Publication date: 2024-03-28
Also published as: CN115385416A

Abstract

The present invention provides an ultraviolet sterilizer having power-off protection functionality, comprising: a housing, an ultraviolet lamp tube, and a lamp holder wire. The housing sheathes the ultraviolet lamp tube. One end of the ultraviolet lamp tube is detachably connected to the lamp holder wire. The housing is provided with a limiting member. The limiting member is movable between a stopping position and an avoiding position. When the limiting member is located at the stopping position, the ultraviolet lamp tube is locked in the housing, and the lamp holder wire is separated from the ultraviolet lamp tube under the action of external force; after the lamp holder wire is separated from the ultraviolet lamp tube, the limiting member is changed from the stopping position to the avoiding position under the action of external force to unlock the ultraviolet lamp tube. The ultraviolet sterilizer having power-off protection functionality of the present invention can be automatically powered off during the disassembly of the ultraviolet lamp tube, such that the human body is protected from being damaged by ultraviolet rays. By locking/unlocking the ultraviolet lamp tube via the limiting member, the present invention is suitable for conventional ultraviolet lamp tubes, and features low replacement costs.

Description

An ultraviolet sterilizer with power-off protection function

Technical field

The present invention relates to the technical field of water treatment equipment, and specifically to an ultraviolet sterilizer with a power-off protection function.

Background technique

Ultraviolet sterilizer has the advantages of high radiation intensity stability, sterilization life of up to 9,000 hours, high transmittance quartz glass tube, light transmittance ≥ 87%, sterilization life of up to 8,000 hours, and can be widely used in the field of water treatment and sterilization middle.

In the prior art, ultraviolet lamp tubes are connected to lamp holder wires and the ultraviolet lamp tubes are inserted into the filter tube body; however, with the use of ultraviolet sterilizers, the ultraviolet lamp tubes need to be replaced regularly to ensure that the sterilization effect remains good. status; when replacing, the UV lamp needs to be pulled out of the casing. When the UV lamp is pulled out, it is still connected to the lamp head wire and emits UV light, which may cause harm to personnel and burn people's eyes or skin.

Contents of the invention

(1) Technical problems to be solved

The problem to be solved by the present invention is to provide an ultraviolet sterilizer with a power-off protection function, which can automatically cut off the power when disassembling the ultraviolet lamp tube to prevent the human body from being damaged by ultraviolet rays; and position the ultraviolet lamp tube by driving the limiter/ Unpositioned, suitable for conventional UV lamps, low replacement cost.

(2) Technical solutions

In order to solve the technical problem, the present invention provides an ultraviolet sterilizer with power-off protection function, including: a housing, an ultraviolet lamp tube and a lamp holder wire. The lamp holder wire is a power cord, and the ultraviolet lamp tube is sleeved on In the housing, the housing is in the shape of a hollow cylinder, and one end of the ultraviolet lamp tube is detachably connected to the lamp cap wire. When the ultraviolet lamp tube is connected to the lamp cap wire, the ultraviolet lamp tube is connected to the lamp cap wire. The lamp holder wire is connected and emits light. When the ultraviolet lamp tube and the lamp holder wire are disassembled and separated, the ultraviolet lamp tube is disconnected from the lamp holder wire and extinguishes. A limiter is provided on the housing, and the limiter The member includes a stop position and an escape position. When the limit member is in the stop position, the ultraviolet lamp tube is positioned in the housing, and the lamp head line is in contact with the ultraviolet lamp under the action of external force. The tube is separated; when the lamp cap line is separated from the ultraviolet lamp tube, the limiting member is changed from the stop position to the avoidance position under the action of external force to release the positioning of the ultraviolet lamp tube; It can automatically cut off the power when disassembling the ultraviolet lamp to prevent the human body from being damaged by ultraviolet rays; it can position/unposition the ultraviolet lamp by driving the limiter, which is suitable for conventional ultraviolet lamps and has low replacement cost.

Furthermore, a hoop ring is fixedly provided on the lamp holder line, a positioning guide post is provided on the hoop ring, and a positioning hole matching the positioning guide post is provided on the limiter.

Further, the housing is provided with a nut at one end close to the lamp holder line, and the nut is provided with a buckle that matches the hoop ring. The buckle includes an upper slope and a lower slope. The hoop is provided with a first inclined surface corresponding to the upper inclined surface and a second inclined surface corresponding to the lower inclined surface.

Further, the limiter includes an integrally formed elastic snap ring and a limiter plate, and the positioning hole is opened on the limiter plate; the housing is provided with a nut at one end close to the lamp cap line, and the The elastic snap ring is clamped on the nut, the nut is provided with a first chute and a second chute, the elastic snap ring is slidably placed in the first chute, and the limit plate slides Place it in the second chute.

Further, the limit plate includes two limit bars, and stop portions are provided on opposite sides of the two limit bars. When the limit member is in the stop position, the ultraviolet light The lamp tube abuts against the stopper.

Further, one end of the elastic snap ring is provided with a limiting protrusion, and the nut is provided with a limiting groove that matches the limiting protrusion.

Furthermore, the limiting member is provided with an escape groove corresponding to the ultraviolet lamp tube, and the escape groove is formed on the limit bar.

Furthermore, the ultraviolet lamp tube is provided with a plurality of conductive posts at one end close to the lamp holder wire, the lamp holder wire is provided with a plurality of conductive sockets matched with the conductive posts, and a protective cover is provided on the sliding sleeve of the lamp holder wire.

Further, the lamp cap wire includes an insulating jacket, a power cord and a grounding wire. The grounding wire is led out from the inside of the insulating jacket and is electrically connected to the housing. The grounding wire includes a spiral elastic wire. part.

Further, a quartz tube is set inside the housing, and the ultraviolet lamp tube is placed in the quartz tube. A safety bracket corresponding to the quartz tube is welded to the housing, and the safety bracket includes an integrally formed The welding bracket and a plurality of inclined supporting plates are provided, and during operation, the quartz tube is in contact with a plurality of the supporting plates at the same time.

(3) Beneficial effects

The ultraviolet sterilizer of the present invention has a power-off protection function. It can automatically cut off the power when the ultraviolet lamp tube is disassembled to prevent the human body from being damaged by ultraviolet rays; it drives the limiter to position/unposition the ultraviolet lamp tube, and is suitable for conventional ultraviolet rays. The replacement cost of the lamp is low; when replacing the UV lamp, the operation can be completed without the use of tools, making it easy to replace; the limiter is made of polyformaldehyde, which has the advantages of good toughness, good wear resistance, good self-lubricating properties, and is more durable ; When the stopper is slid from the stop position to the avoidance position by hand, the elastic snap ring undergoes elastic deformation. At this time, the elastic snap ring is released, and the elastic snap ring returns to the stop position under its own elastic force. It is easy to use; elastic One end of the snap ring is provided with a limit protrusion, and the nut is provided with a limit groove that matches the limit protrusion to prevent the limit member from accidentally detaching from the nut; the grounding wire can be retracted, and the grounding wire can be used when replacing the ultraviolet lamp. It does not require disassembly, and the ground wire is easy to store in the protective cover; the safety bracket has elastic characteristics, which meets both lateral and longitudinal elastic requirements, and has a deformation limit, making it difficult to damage the quartz tube, saving materials and reducing costs.

Description of the drawings

Figure 1 is a perspective view of an ultraviolet sterilizer with power-off protection function according to the present invention;

Figure 2 is a cross-sectional view of an ultraviolet sterilizer with power-off protection function according to the present invention;

Figure 3 is a schematic structural diagram of the ultraviolet sterilizer with power-off protection function of the present invention when the protective cover is removed;

Figure 4 is a schematic structural diagram of the grounding wire of the ultraviolet sterilizer with power-off protection function according to the present invention;

Figure 5 is a schematic structural diagram of the ultraviolet sterilizer with power-off protection function when the limiter is placed in the stop position according to the present invention;

Figure 6 is a schematic structural diagram of the ultraviolet sterilizer with power-off protection function when the limiter is placed in the avoidance position according to the present invention;

Figure 7 is a schematic structural diagram of the first chute of the ultraviolet sterilizer with power-off protection function according to the present invention;

Figure 8 is a schematic structural diagram of the first pitch of the ultraviolet sterilizer with power-off protection function according to the present invention;

9 is a schematic structural diagram of a limiter of an ultraviolet sterilizer with a power-off protection function according to the present invention;

Figure 10 is a schematic structural diagram of the lamp cap line of an ultraviolet sterilizer with power-off protection function according to the present invention;

Figure 11 is a schematic structural diagram of the ultraviolet sterilizer safety bracket with power-off protection function of the present invention;

Figure 12 is a schematic structural diagram of an ultraviolet sterilizer ultraviolet lamp with power-off protection function according to the present invention;

Figure 13 is a schematic structural diagram of the installation column part of the ultraviolet sterilizer with power-off protection function according to the present invention;

The names of the components corresponding to the reference numerals in the figure are: 1 is a shell, 2 is an ultraviolet lamp tube, 201 is a conductive column, 202 is a positioning block, 203 is a light-emitting tube, 204 is a mounting tube, 3 is a lamp holder wire, 301 is a conductive socket, 4 is a limiter, 401 is a stopper, 402 is a avoidance groove, 403 is an elastic clamp, 404 is a limiter plate, 405 is a limiter protrusion, 406 is a positioning hole, 407 is a guide groove, 408 is an anti-slip protrusion, 5 is a nut, 501 is a first slide groove, 502 is a second slide groove, 503 is a limiter slot, 504 is a buckle, 505 is an upper bevel, 506 is a lower bevel, 507 is an annular flange, 6 is a protective cover, 601 is a snap fit portion, 7 is a clamp ring, 701 is a first bevel, 702 is a second bevel, 703 is a positioning guide column, 8 is a grounding wire, 801 is an elastic wire segment, 9 is a quartz tube, 10 is a safety bracket, 11 is a welding bracket, 12 is a support plate, 13 is a lamp holder, 15 is a positioning slot, 16 is a limit strip, 17 is a bolt, 18 is a mounting column, L1 is a first spacing, L2 is a second spacing, and D is a diameter.

Detailed ways

Specific implementations of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the invention but are not intended to limit the scope of the invention.

Referring to Figures 1 to 13, the present invention provides an ultraviolet sterilizer with power-off protection function, including: a housing 1, an ultraviolet lamp tube 2 and a lamp holder wire 3. The lamp holder wire is a power cord, and the ultraviolet lamp tube 2 is set on Inside the housing 1, the housing is in the shape of a hollow cylinder. One end of the ultraviolet lamp tube 2 is detachably connected to the lamp cap wire 3. When the ultraviolet lamp tube is connected to the lamp cap wire, the ultraviolet lamp tube is connected to the lamp cap wire and emits light. The ultraviolet lamp tube is connected to the lamp cap wire 3. When the lamp holder wire is disassembled and separated, the ultraviolet lamp tube is disconnected from the lamp holder wire and extinguished. A limiter 4 is provided on the housing 1. The limiter 4 includes a stop position and an avoidance position. When the limiter 4 is in the stop position, The ultraviolet lamp tube 2 is positioned in the housing 1, and the lamp head wire 3 is separated from the ultraviolet lamp tube 2 under the action of external force; the power can be automatically cut off when the ultraviolet lamp tube is disassembled, and the ultraviolet lamp tube 2 is extinguished and removed from the housing after the power is turned off. 1 to prevent the human body from being damaged by ultraviolet rays; when the lamp head wire 3 is separated from the ultraviolet lamp tube 2, the limiter 4 changes from the stop position to the avoidance position under the action of external force to release the positioning of the ultraviolet lamp tube 2; The UV lamp is positioned/unpositioned by driving the limiter, which is easy to operate.

Referring to Figures 5 to 10, a hoop ring 7 is fixedly provided on the lamp holder wire 3, and a lamp holder holder 13 is installed at one end of the lamp holder wire 3. The hoop ring 7 can tightly hold the lamp holder 13 and one end of the lamp holder wire 3 and secure it through bolts. The hoop ring 7 is tightened; in this embodiment, the ultraviolet lamp tube 2 is provided with a positioning block 202, and the lamp base 13 is provided with a positioning groove 15 that matches the positioning block 202. The positioning block 202 has a rectangular cross-section, and the positioning groove 15 is The arrangement of the rectangular groove, the positioning block 202 and the positioning groove 15 facilitates the user to more intuitively fit the positioning block 202 with the positioning groove 15, so that the lamp holder 13 is connected to the ultraviolet lamp 2, which prevents the installation during installation. The ultraviolet lamp tube 2 can also be replaced with a conventional lamp tube; the hoop ring 7 is provided with a positioning guide post 703, and the limiter 4 is provided with a positioning hole 406 that matches the positioning guide post 703; the lamp cap wire 3 When connected to the ultraviolet lamp 2, the positioning guide post 703 falls into the positioning hole 406 for engagement. At this time, the limiter 4 is placed in the stop position and cannot slide. When the lamp holder wire 3 and the ultraviolet lamp tube 2 are disassembled and separated, pull the lamp holder wire 3 to one side and away from the ultraviolet lamp tube 2. At this time, the ultraviolet lamp tube 2 is limited in the housing 1 by the limiter 4, so that the ultraviolet lamp tube 2 will not be taken out of the housing 1 by the lamp holder wire 3; after the lamp holder wire 3 is separated from the UV lamp 2, the positioning guide post 703 is separated from the positioning hole 406. At this time, the limiter 4 is pushed by hand and slid to the avoidance position, and the UV lamp is Tube 2 takes out the housing 1. Referring to Figure 12, the ultraviolet lamp tube 2 includes a luminous tube 203 and a non-luminous installation tube 204. There are two installation tubes 204 and they are respectively connected to both ends of the luminous tube 203. When replacing a new ultraviolet lamp tube 2, the new one must be installed. The installation tube 204 at one end of the ultraviolet lamp tube 2 is inserted inward into the housing 1, so that except for the installation tube 204 at the other end exposed outside the housing 1, the rest of the ultraviolet lamp tube 2 is placed inside the housing 1 to avoid subsequent problems. The ultraviolet lamp 2 will damage the human body after being powered on; then plug the ultraviolet lamp 2 and the lamp holder wire 3 into place and put the ultraviolet lamp 2 completely into the housing 1. After putting it in place, remove the stopper 4 from The avoidance position slides to the stop position, so that the positioning guide post 703 falls into the positioning hole 406 to complete the replacement of the ultraviolet lamp tube 2 . The positioning guide post 703 adopts a telescopic spring positioning guide post, and the limiter 4 is provided with a guide groove 407 that matches the positioning guide post 703; when replacing the ultraviolet lamp tube 2, completely put the new ultraviolet lamp tube 2 into the housing. 1, the spring positioning guide post and the guide groove 407 facilitate the user to slide the limiter 4 from the avoidance position to the stop position.

1 , 5 and 7 , the buckle 504 includes an upper bevel 505 and a lower bevel 506, and the hoop ring 7 is provided with a first bevel 701 corresponding to the upper bevel 505 and a second bevel 702 corresponding to the lower bevel 506, the upper bevel 505 is consistent with the first bevel 701 at an inclination angle, and the lower bevel 506 is consistent with the second bevel 702 at an inclination angle; when the hoop ring 7 is downwardly snapped into the buckle 504, the lower bevel 506 cooperates with the second bevel 702 for guidance, making it easier for the hoop ring 7 to snap into the buckle 504; when the hoop ring 7 is upwardly detached from the buckle 504, the upper bevel 505 cooperates with the first bevel 701 for guidance, making it easier for the hoop ring 7 to detach from the buckle 504.

Referring to Figure 1, Figure 2 and Figure 6, the limiter 4 is slidably installed on the housing 1. One end of the housing 1 is provided with an opening for moving in/out the ultraviolet lamp 2, and the ultraviolet lamp 2 moves in/out along its own axis. The housing 1 is cylindrical. The axis of the housing 1 coincides with the axis of the ultraviolet lamp 2. The sliding direction of the limiter 4 is perpendicular to the axis of the ultraviolet lamp 2. The limiter 4 can be moved from the stopper. The gear position slides to the avoidance position, and also slides from the avoidance position to the stop position.

Referring to Figures 1 to 9, the limiter 4 includes an integrally formed elastic snap ring 403 and a limiter plate 404. The elastic snap ring 403 is in a non-closed arc shape, and the limiter plate 404 is in a U shape; the housing 1 is close to the lamp holder. One end of the wire 3 is provided with a nut 5, which is screwed to the housing 1. The nut 5 can fix the quartz tube 9 in the housing 1; the elastic snap ring 403 is snap-connected to the arc side wall of the nut 5. , the arc inner wall of the elastic snap ring 403 matches the arc side wall of the nut 5, the stopper 4 is made of polyacetal, which has the advantages of good toughness, good wear resistance, good self-lubrication, and is more durable; The cap 5 is provided with a first chute 501 and a second chute 502. The elastic snap ring 403 is slidably placed in the first chute 501, and the limiting plate 404 is slidably placed in the second chute 502. When the limiter 4 is slid from the stop position to the avoidance position by hand, the elastic snap ring 403 undergoes elastic deformation. At this time, the elastic snap ring 403 is released, and the elastic snap ring 403 returns to the stop position under its own elastic force. Use Convenient.

Referring to FIGS. 1 to 9 , the limit plate 404 includes two limit bars 16 extending from the side ends of the limit plate 404 , and stop portions 401 are provided on opposite sides of the two limit bars 16 . , when the limiter 4 is in the stop position, the ultraviolet lamp tube 2 abuts against the stop 401 . The limiter 4 is provided with an escape groove 402 corresponding to the ultraviolet lamp tube 2. The escape groove 402 is formed on the limit bar 16; there are two stoppers 401 arranged oppositely, and two escape grooves 402 arranged oppositely. 402 is opened at the end of the limit bar 16 away from the limit plate 404, and the stop portion 401 is provided between the limit plate 404 and the escape groove 402. When the limit member 4 switches from the stop position to the escape position, the stop portion 401 Move out directly above the ultraviolet lamp tube 2, and move the escape groove 402 into directly above the ultraviolet lamp tube 2 to release the positioning of the ultraviolet lamp tube 2; the first distance L1 between the two stoppers 401 is smaller than the two escape grooves 402 The second distance L2 between position; when the sliding limiter 4 is in the avoidance position, the external force drives the ultraviolet lamp 2 to slide and pass through the avoidance groove 402, thereby moving the ultraviolet lamp 2 out of the housing 1; the ultraviolet lamp 2 is moved through the limit bar 16 For positioning and de-positioning, the ultraviolet lamp tube 2 and the limit strip 16 are set up separately. The power-off protection function can be realized without adding other structures to the ultraviolet lamp tube 2. Therefore, the ultraviolet lamp tube 2 can use conventional lamp tubes to reduce the cost of use. .

Referring to Figures 3, 4, 6 and 9, one end of the elastic snap ring 403 is provided with a limiting protrusion 405, the nut 5 is provided with a limiting groove 503 that matches the limiting protrusion 405, and the limiting member 4 slides When the stop position is reached, the limit protrusion 405 engages with the limit groove 503 to prevent the limit member 4 from accidentally coming out of the nut 5 . In this embodiment, two limiting protrusions 405 are provided and are respectively provided at both ends of the elastic snap ring 403, and two limiting grooves 503 are also provided correspondingly. The elastic snap ring 403 is provided with a plurality of anti-slip protrusions 408 to facilitate the user to slide the elastic snap ring 403 by hand.

Referring to Figures 4 and 5, a nut 5 is provided at one end of the housing 1 close to the lamp head line 3. The nut 5 is made of polyformaldehyde. The nut 5 is provided with a buckle 504 that matches the hoop ring 7. The buckle 504 can Prevent the lamp cap wire 3 from being accidentally separated from the ultraviolet lamp tube 2; when disassembling and separating the lamp cap wire 3 and the ultraviolet lamp tube 2, you only need to pull out the lamp cap wire 3 with a little force to separate the hoop ring 7 from the buckle 504, so that the lamp cap wire 3 and the ultraviolet lamp tube 2 can be separated from each other. UV lamp 2 is separated.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 5 and Fig. 10, a plurality of conductive posts 201 are arranged at one end of the ultraviolet lamp tube 2 close to the lamp holder wire 3, and a plurality of conductive sockets 301 matching with the conductive posts 201 are arranged on the lamp holder wire 3. When the ultraviolet lamp tube 2 is connected with the lamp holder wire 3, the conductive posts 201 are correspondingly inserted into the conductive sockets 301, and when the ultraviolet lamp tube 2 is disassembled and separated from the lamp holder wire 3, the conductive posts 201 are separated from the conductive sockets 301; a protective cover 6 is provided on the sliding sleeve of the lamp holder wire 3, and the protective cover 6 is made of insulating material; it plays a role of dustproof and waterproof. An annular flange 507 is arranged on the nut 5, and a clamping part 601 matching with the annular flange is arranged on the protrusion of the protective cover 6. The protective cover 6 is positioned with the annular flange 507 through the clamping part 601. When disassembling the protective cover 6, the protective cover 6 can be separated from the nut 5 to one side.

Referring to Figures 1 and 3, the housing 1 is made of metal. The lamp holder wire 3 includes an insulating jacket, a power cord and a grounding wire 8. The grounding wire 8 is led out from the inside of the insulating jacket and is electrically connected to the housing 1. The grounding wire 8 The end of the wire 3 away from the lamp holder is fastened to the housing 1 through bolts 17; grounding the housing 1 increases safety; the ground wire 8 includes a spiral elastic wire segment 801, and the ground wire 8 can be retracted when replacing the ultraviolet lamp 2 The ground wire 8 does not need to be disassembled, and the ground wire 8 is easily stored in the protective cover 6 .

Referring to Figures 1, 2 and 11, a quartz tube 9 is sleeved in the housing 1, and the ultraviolet lamp 2 is placed in the quartz tube 9. A spring is arranged between the inner bottom of the quartz tube 9 and the outer bottom of the ultraviolet lamp 2, one end of the spring abuts against the quartz tube 9, and the other end of the spring abuts against the ultraviolet lamp 2; the housing 1 is welded with a safety bracket 10 corresponding to the quartz tube 9, and the safety bracket 10 includes an integrally formed welding bracket 11 and a plurality of inclined support plates 12. In this embodiment, three support plates 12 are provided, and the quartz tube 9 abuts against a plurality of support plates 12 at the same time during operation. The ultraviolet sterilizer is equipped with a quartz tube, which is inserted into the housing of the ultraviolet sterilizer and needs to be fixed by a bracket inside. The bracket material needs to be made of stainless steel and needs a certain degree of elasticity. There are two main types of existing brackets, one is a coil spring, which is easy to deform laterally and damage the quartz tube; the other is a sheet metal bracket, which needs to be equipped with an elastic device. The ultraviolet disinfector has the characteristics of sheet metal cantilever beam elasticity by means of the safety bracket 10, which meets both lateral elasticity requirements and longitudinal elasticity requirements, has a deformation limit, is not easy to damage the quartz tube, saves materials, and reduces costs. The safety bracket 10 is a stamping part with low production cost.

Referring to Figure 13, the end of the grounding wire 8 away from the lamp holder wire 3 is fixed to the housing 1 by a bolt 17. A mounting post 18 for mounting the bolt 17 is provided on the housing 1. The mounting post 18 and the housing 1 are both made of metal and are fixed by welding; the mounting post 18 is provided at the side end of the annular flange 507, and after the bolt 17 is tightened, it presses downward against the annular flange 507 and locks the annular flange 507; the bolt 17 is a flat head bolt, so that after tightening, the flat head of the bolt 17 limits the annular flange 507 to prevent the nut 5 from being accidentally screwed out of the housing 1 without removing the bolt 17.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be made. regarded as the protection scope of the present invention.

Claims

An ultraviolet sterilizer with power-off protection function, including: a casing (1), an ultraviolet lamp (2) and a lamp holder wire (3), the ultraviolet lamp (2) is sleeved on the casing (1) ), characterized in that one end of the ultraviolet lamp tube (2) is detachably connected to the lamp holder wire (3), and a limiter (4) is provided on the housing (1). The limiter (4) includes a stop position and an avoidance position. When the limiter (4) is in the stop position, the ultraviolet lamp tube (2) is positioned in the housing (1), so The lamp cap wire (3) is separated from the ultraviolet lamp tube (2) under the action of external force;

When the lamp cap wire (3) is separated from the ultraviolet lamp tube (2), the limiting member (4) is changed from the stop position to the avoidance position under the action of external force, so as to release the restriction on the Positioning of UV lamp (2).
The ultraviolet sterilizer with power-off protection function according to claim 1, characterized in that a hoop ring (7) is fixedly provided on the lamp holder wire (3), and a hoop ring (7) is provided on the Positioning guide post (703), the limiting member (4) is provided with a positioning hole (406) that matches the positioning guide post (703).
The ultraviolet sterilizer with power-off protection function according to claim 2, characterized in that a nut (5) is provided at one end of the housing (1) close to the lamp holder wire (3), and the nut (5) 5) There is a buckle (504) that matches the hoop ring (7). The buckle (504) includes an upper slope (505) and a lower slope (506). The hoop ring (7) A first slope (701) corresponding to the upper slope (505) and a second slope (702) corresponding to the lower slope (506) are provided.
The ultraviolet sterilizer with power-off protection function according to claim 2, characterized in that the limiting member (4) includes an integrally formed elastic snap ring (403) and a limiting plate (404). The hole (406) is opened on the limiting plate (404); the housing (1) is provided with a nut (5) at one end close to the lamp holder wire (3), and the elastic snap ring (403) is snap-fitted On the nut (5), the nut (5) is provided with a first chute (501) and a second chute (502), and the elastic snap ring (403) is slidably placed on the first chute (501). In the chute (501), the limiting plate (404) is slidably placed in the second chute (502).
The ultraviolet sterilizer with power-off protection function according to claim 4, characterized in that a limiting protrusion (405) is provided at one end of the elastic snap ring (403), and a limit protrusion (405) is provided on the nut (5). The limiting protrusion (405) matches the limiting groove (503).
The ultraviolet sterilizer with power-off protection function according to claim 4, characterized in that the limit plate (404) includes two limit bars (16), and the two limit bars (16) are opposite to each other. A stopper (401) is provided on one side of the .
The ultraviolet sterilizer with power-off protection function according to claim 6, characterized in that the limiting member (4) is provided with an escape groove (402) corresponding to the ultraviolet lamp (2), so The escape groove (402) is formed on the limiting bar (16).
The ultraviolet sterilizer with power-off protection function according to claim 1, characterized in that a plurality of conductive pillars (201) are provided at one end of the ultraviolet lamp tube (2) close to the lamp holder wire (3), so The lamp cap cord (3) is provided with a plurality of conductive jacks (301) that match the conductive posts (201), and a protective cover (6) is provided on the sliding sleeve of the lamp cap cord (3).
The ultraviolet sterilizer with power-off protection function according to any one of claims 1 to 8, characterized in that the lamp holder wire (3) includes an insulating jacket, a power wire and a ground wire (8), and the ground wire (8) Leading out from the inside of the insulating jacket and electrically connected to the housing (1), the ground wire (8) includes a spiral elastic wire segment (801).
The ultraviolet sterilizer with power-off protection function according to any one of claims 1 to 8, characterized in that the housing (1) is equipped with a quartz tube (9), and the ultraviolet lamp tube (2 ) is placed in the quartz tube (9). The housing (1) is welded with a safety bracket (10) corresponding to the quartz tube (9). The safety bracket (10) includes an integrally formed Welding the bracket (11) and a plurality of inclined supporting plates (12), the quartz tube (9) simultaneously abuts on the plurality of supporting plates (12) during operation.