Safety light curtain and use method

Abstract

The invention discloses a safety light curtain which comprises a projection and reception assembly including a light projector and a light receiver, a cleaning assembly including a cleaning base and a water outlet plate, and a nozzle assembly including a nozzle. The invention further discloses a using method of the safety light curtain. The using method comprises the steps of installing the transmitting and receiving assembly and the reflecting assembly, installing the cleaning assembly and adjusting the cleaning mode of the cleaning assembly. According to the device, the safety light curtain can effectively clean itself, particularly, the cleaning assembly can adapt to the transmitting and receiving assembly and the reflecting assembly at the same time, complexity of the device is avoided, and the maintenance and updating cost of the device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of safety light curtains, and in particular to a safety light curtain and a usage method thereof. Background Art

[0002] Nuclear energy is a clean and efficient energy source that can provide a large amount of energy and significantly reduce greenhouse gas emissions. However, the utilization of nuclear energy is also accompanied by challenges that cannot be ignored, among which the most prominent is the problem of radioactive waste disposal. These wastes include spent fuel, cooling water, exhaust gas, and solid waste, etc., which are diverse in types and highly dangerous, and strict management and treatment measures need to be taken.

[0003] Among these wastes, the treatment of solid waste is particularly complex. In order to reduce the storage space of the waste, remotely controlled fixed cutting equipment is often used to reduce the volume of the waste. For convenient early warning and to prevent people from accidentally entering the cutting range, a safety light curtain is generally used to enclose the cutting equipment and appropriate shutdown conditions are set; in the cutting environment, if the dust treatment is not well done during cutting, the safety light curtain is easily attached with dust generated by cutting, resulting in the failure of the safety light curtain. Therefore, a self-cleaning safety light curtain is needed to improve the reliability of the safety light curtain and ensure its normal operation in harsh environments. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that the safety light curtain is easily invalidated due to dust accumulation.

[0006] To solve the above technical problems, the first object of the present invention is to provide a safety light curtain, including a light emitting and receiving component, a cleaning component, and a nozzle component.

[0007] As a preferred solution of the safety light curtain of the present invention, wherein: the light emitting and receiving component includes a light emitter and a light receiver, and the light emitter and the light receiver are parallel;

[0008] The cleaning component is arranged on one side of the light emitting and receiving component and includes a cleaning base and a water outlet plate, and the water outlet plate is arranged on the cleaning base; and,

[0009] The nozzle component is arranged on the water outlet plate and includes a nozzle head facing the light emitting and receiving component.

[0010] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The reflection assembly, having at least one set, is disposed on the side of the light projecting and receiving assembly, and includes a second mounting base and a reflecting mirror. The reflecting mirror is disposed on the side of the mounting base. The light projector, the light receiver, and multiple sets of the reflecting mirrors are not collinear. The light emitted by the light projector is reflected by multiple sets of the reflecting mirrors and then irradiates on the light receiving surface of the light receiver.

[0011] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The light projecting and receiving assembly further includes a first mounting base, and the light projector and the light receiver are disposed on the top of the first mounting base.

[0012] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The number of the cleaning assemblies is one more than that of the reflection assemblies. The cleaning assemblies and the reflection assemblies correspond to each other one by one, and the extra cleaning assembly faces the light projecting and receiving assembly.

[0013] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The nozzle assembly further includes a fixing member and a rotating member. One end of the fixing member is communicated with the water outlet plate, the other end is communicated with one end of the rotating member, and the other end of the rotating member is communicated with the nozzle.

[0014] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The cleaning assembly further includes a water inlet and a lead screw. The water inlet is disposed on one side of the cleaning base, and the lead screw is disposed on the other side of the cleaning base.

[0015] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The cleaning assembly further includes a lifting plate, which cooperates with the lead screw. A lifting hole is provided on the lifting plate, and the lifting hole cooperates with the nozzle assembly.

[0016] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The fixing member includes a water inlet straight pipe, a water outlet ball pipe, a limiting plate, a limiting spring, and a limiting arc pipe; The water inlet straight pipe is disposed at one end of the water outlet ball pipe, and the water inlet straight pipe is communicated with the water outlet plate; The limiting plate is disposed on one side of the water inlet straight pipe; One end of the limiting spring is disposed at the center of the limiting plate, and the other end faces the rotating member; The limiting arc pipe is disposed inside the limiting spring.

[0017] As a preferred embodiment of the safety light curtain of the present invention, the following is provided: The rotating member includes a water inlet ball pipe, a water outlet straight pipe, and a limiting arc rod; The water inlet ball pipe is sleeved outside the water outlet ball pipe; The water outlet straight pipe is communicated with one end of the water outlet ball pipe; One end of the limiting arc rod is disposed on the side of the water outlet straight pipe, and the other end is sleeved inside the limiting arc pipe.

[0018] The beneficial effects of the safety light curtain of the present invention are as follows: It can clean itself, and at the same time, the cleaning component can clean the light emitting and receiving component and the reflection component simultaneously.

[0019] Another object of the present invention is to provide a method for using a safety light curtain.

[0020] As a preferred solution of the method for using the safety light curtain of the present invention, the steps are as follows: Install the light emitting and receiving component and the reflection component so that the light emitted by the light emitter can be received by the light receiver; install the cleaning component to prevent the light emitting and receiving component from failing due to dust during use; adjust the cleaning mode of the cleaning component to prepare for cleaning the light emitting and receiving component.

[0021] The beneficial effects of the method for using the safety light curtain of the present invention are as follows: When installing the cleaning component for the light emitting and receiving component and the reflection component, although the areas and directions to be cleaned for the two are different, two cleaning components are not required. Instead, only the cleaning mode of the cleaning component needs to be adjusted, avoiding the complication of the device and reducing the maintenance and update costs of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Oblique view of the light emitting and receiving component according to an embodiment provided by the present invention.

[0024] Figure 2 Oblique view of the safety light curtain according to an embodiment provided by the present invention.

[0025] Figure 3 Front view of the cleaning component according to an embodiment provided by the present invention.

[0026] Figure 4 Exploded view of the cleaning component according to an embodiment provided by the present invention.

[0027] Figure 5 Top view of the nozzle component in the non-conductive state according to an embodiment provided by the present invention.

[0028] Figure 6 For Figure 5 sectional view.

[0029] Figure 7 Top view of the nozzle component in the conductive state according to an embodiment provided by the present invention.

[0030] Figure 8 ForFigure 7 Cross-sectional view.

[0031] Figure 9 It is a flowchart of the usage method of a safety light curtain according to an embodiment provided by the present invention. Specific embodiments

[0032] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0033] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments alone or selectively.

[0035] Embodiment 1

[0036] Refer to Figure 1 , which is the first embodiment of the present invention. This embodiment provides a safety light curtain, including: a light emitting and receiving component 100, a cleaning component 300, and a nozzle component 400.

[0037] Specifically, the light emitting and receiving component 100 includes a light emitter 101 and a light receiver 102, and the light emitter 101 and the light receiver 102 are parallel.

[0038] The light emitter 101 of the light emitting and receiving component 100 is used to emit a group of infrared beams, and the light receiver 102 is used to monitor whether the beams are blocked. Once it is detected that a person or an object blocks the light, the safety light curtain will immediately send a signal to the relevant control system to trigger the equipment to stop running or take other safety measures.

[0039] Optionally, the light emitter 101 can be far away from and directly face the light receiver 102, so that a safety light curtain is formed between the light emitter 101 and the light receiver 102. Multiple safety light curtains can enclose the area to be protected.

[0040] Specifically, the cleaning component 300 is arranged on one side of the light emitting and receiving component 100, and includes a cleaning base 301 and a water outlet plate 304. The water outlet plate 304 is arranged on the cleaning base 301.

[0041] The cleaning component 300 is used to clean the light projecting and receiving component 100, preventing dust from accumulating on the light projecting and receiving component 100 and causing the safety light curtain to fail.

[0042] Specifically, the nozzle assembly 400 is disposed on the water outlet plate 304 and includes a nozzle head 403 facing the light projecting and receiving component 100.

[0043] There are multiple rows of water outlets on the water outlet plate 304, each water outlet is matched with a nozzle assembly 400, and the installation directions of each row of nozzle assemblies 400 are the same.

[0044] The nozzle assembly 400 is used to eject a cleaning fluid, including but not limited to an air flow or a liquid flow, to clean the light projecting surface of the light projector 101 and the light receiving surface of the light receiver 102, while not changing the position of the light projecting and receiving component 100, to avoid the failure of the safety light curtain.

[0045] During use, when cutting solid nuclear waste, a large amount of dust will be generated. If dust suppression measures are not taken properly, the dust may adhere to the light projector 101 or the light receiver 102, resulting in the failure of the safety light curtain. Therefore, the cleaning component 300 is provided and installed on the sides of the light projector 101 and the light receiver 102 to clean the light projector 101 and the light receiver 102 without affecting the light projection of the light projector 101 and the light reception of the light receiver 102.

[0046] Embodiment 2

[0047] Refer to Figures 1 to 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. This embodiment provides a safety light curtain. Different from the previous embodiment, this embodiment further includes a reflection component 200.

[0048] Specifically, the light projecting and receiving component 100 includes a light projector 101 and a light receiver 102, and the light projector 101 and the light receiver 102 are parallel.

[0049] The light projector 101 of the light projecting and receiving component 100 is used to emit a group of infrared light beams, and the light receiver 102 is used to monitor whether the light beams are blocked. Once it is detected that a person or an object blocks the light, the safety light curtain will immediately send a signal to the relevant control system to trigger the device to stop running or take other safety measures.

[0050] Optionally, the light projector 101 can be far away from and face the light receiver 102, so that a safety light curtain is formed between the light projector 101 and the light receiver 102. Multiple safety light curtains can enclose the area to be protected.

[0051] Specifically, there is at least one set of reflection components 200, which are arranged on the side of the light transmitting and receiving components 100, including a second mounting base 201 and a reflecting mirror 202. The reflecting mirror 202 is arranged on the side of the mounting base 201. The light projector 101, the light receiver 102 and multiple sets of reflecting mirrors 202 are not collinear. The light emitted by the light projector 101 is reflected by multiple sets of reflecting mirrors 202 and then irradiates on the light receiving surface of the light receiver 102.

[0052] The reflection component 200 is used to reflect the light projected by the light projector 101. Through the reflected light, only one set of light transmitting and receiving components 100 is needed to enclose the area to be protected.

[0053] Specifically, the cleaning component 300 is arranged on one side of the light transmitting and receiving components 100, including a cleaning base 301 and a water outlet plate 304. The water outlet plate 304 is arranged on the cleaning base 301.

[0054] The cleaning component 300 is used to clean the light transmitting and receiving components 100 to prevent the safety light curtain from failing due to dust on the light transmitting and receiving components 100.

[0055] Specifically, the nozzle component 400 is arranged on the water outlet plate 304, including a nozzle head 403, facing the light transmitting and receiving components 100.

[0056] The nozzle component 400 is used to spray a cleaning fluid, including but not limited to an air flow or a liquid flow, to clean the light projecting surface of the light projector 101 and the light receiving surface of the light receiver 102, and at the same time, without changing the position of the light transmitting and receiving components 100, to prevent the safety light curtain from failing.

[0057] Each column of nozzle components 400 on the water outlet plate 304 faces the same direction. Each column of nozzle components 400 is either used to clean the light transmitting and receiving components 100 or used to clean the reflection components 200. The nozzle components 400 for different cleaning objects face different directions.

[0058] During use, when cutting solid nuclear waste, a large amount of dust will be generated. If dust reduction measures are not taken, the dust may adhere to the light projector 101, the light receiver 102 or the reflecting mirror 202, resulting in the failure of the safety light curtain. Therefore, the cleaning component 300 is set, installed on the side of the light projector 101 and the light receiver 102, and also installed on the front of the reflecting mirror 202. On the premise of not affecting the light projection of the light projector 101, the light reception of the light receiver 102 and the light reflection of the reflecting mirror 202, cleaning is carried out for the light projector 101, the light receiver 102 and the reflecting mirror 202.

[0059] Embodiment 3

[0060] Refer to Figures 1 to 9 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment.

[0061] This embodiment provides a safety light curtain, which includes a transmitting and receiving component 100, a reflecting component 200, a cleaning component 300, and a nozzle component 400.

[0062] Specifically, the transmitting and receiving component 100 further includes a first mounting base 103, and the light emitter 101 and the light receiver 102 are arranged on the top of the first mounting base 103.

[0063] The first mounting base 103 is used to ensure the stable positions of the light emitter 101 and the light receiver 102.

[0064] Specifically, the number of cleaning components 300 is one more than that of the reflecting components 200. The cleaning components 300 correspond to the reflecting components 200 one by one, and the extra cleaning component 300 faces the transmitting and receiving component 100.

[0065] When the light emitter 101 and the light receiver 102 are not close to each other and arranged side by side, the transmitting and receiving component 100 and at least one group of reflecting components 200 form a frame with a notch. The notch can be an opaque area such as a load-bearing column where no one will pass. At this time, the number of cleaning components 300 is two more than that of the reflecting components 200; when the light emitter 101 and the light receiver 102 are close to each other and arranged side by side, the transmitting and receiving component 100 and at least two groups of reflecting components 200 form a complete frame, enclosing the area to be protected within the safety light curtain. At this time, the number of cleaning components 300 is one more than that of the reflecting components 200.

[0066] Specifically, the nozzle component 400 further includes a fixing member 401 and a rotating member 402. One end of the fixing member 401 is connected to the water outlet plate 304, the other end is connected to one end of the rotating member 402, and the other end of the rotating member 402 is connected to the nozzle 403.

[0067] The fixing member 401 draws out the cleaning fluid from the water outlet plate 304 and transports it to the nozzle 403 through the rotating member 402, thereby cleaning the transmitting and receiving component 100 and the reflecting component 200. At the same time, the rotating member 402 can rotate around the fixing member 401, which can adjust the orientation of the nozzle 403 to expand the cleaning range and effect.

[0068] Specifically, the cleaning component 300 further includes a water inlet 302 and a lead screw 303. The water inlet 302 is arranged on one side of the cleaning base 301, and the lead screw 303 is arranged on the other side of the cleaning base 301.

[0069] Specifically, the cleaning component 300 further includes a lifting plate 305. The lifting plate 305 cooperates with the lead screw 303. A lifting hole H1 is provided on the lifting plate 305, and the lifting hole H1 cooperates with the nozzle component 400.

[0070] The water inlet 302 is used to connect to the cleaning fluid from the outside. The lead screw 303 rotates through an external motor to control the height of the lifting plate 305, thereby controlling the orientation of the fluid sprayed by the nozzle assembly 400 and also determining which set of nozzles 403 to use.

[0071] Specifically, the fixing member 401 includes a water inlet straight pipe 401a, a water outlet spherical pipe 401b, a limiting plate 401c, a limiting spring 401d, and a limiting arc pipe 401e. The water inlet straight pipe 401a is disposed at one end of the water outlet spherical pipe 401b, and the water inlet straight pipe 401a is connected to the water outlet plate 304. The limiting plate 401c is disposed on one side of the water inlet straight pipe 401a. One end of the limiting spring 401d is disposed at the center of the limiting plate 401c, and the other end faces the rotating member 402. The limiting arc pipe 401e is disposed inside the limiting spring 401d.

[0072] Specifically, the rotating member 402 includes a water inlet spherical pipe 402a, a water outlet straight pipe 402b, and a limiting arc rod 402c. The water inlet spherical pipe 402a is sleeved outside the water outlet spherical pipe 401b. The water outlet straight pipe 402b is connected to one end of the water outlet spherical pipe 401b. One end of the limiting arc rod 402c is disposed on the side of the water outlet straight pipe 402b, and the other end is sleeved inside the limiting arc pipe 401e.

[0073] By default, the fixing member 401 will push the rotating member 402 to the horizontal direction through the limiting spring 401d, making the fixing member 401 and the rotating member 402 coaxial. In this direction, the water outlet of the water outlet spherical pipe 401b is connected to the water outlet straight pipe 402b of the rotating member 402, and the fluid can be sprayed out from the nozzle 403.

[0074] The nozzle assemblies 400 in each column on the water outlet plate 304 face the same direction. Each column of nozzle assemblies 400 is either used to clean the receiving and transmitting assembly 100 or the reflection assembly 200, and the nozzle assemblies 400 for different cleaning objects face different directions.

[0075] During use, the lifting hole H1 on the lifting plate 305 fits with the water outlet straight pipe 402b of the rotating member 402. When the lifting plate 305 descends, the nozzle assembly 400 for cleaning the reflection assembly 200 is pressed down by the lifting hole H1 until the water inlet spherical pipe 402a blocks the water outlet spherical pipe 401b, and this column can no longer spray the cleaning fluid, while the nozzle assembly 400 for cleaning the receiving and transmitting assembly 100 is unblocked. When the lifting plate 305 ascends, the nozzle assembly 400 for cleaning the receiving and transmitting assembly 100 is lifted by the lifting hole H1 until the water inlet spherical pipe 402a blocks the water outlet spherical pipe 401b, and this column can no longer spray the cleaning fluid, while the nozzle assembly 400 for cleaning the reflection assembly 200 is unblocked. Therefore, by adjusting the shapes of the water inlet spherical pipe 402a and the water outlet spherical pipe 401b, the angular range in which the cleaning fluid can be sprayed when the rotating member 402 rotates can be controlled, thereby controlling the angular range for the nozzle assembly 400 to clean the receiving and transmitting assembly 100 and the reflection assembly 200.

[0076] Example 4

[0077] Reference Figures 1 to 9 , which is the fourth embodiment of the present invention and is based on the first three embodiments.

[0078] This embodiment provides a method for using a safety light curtain.

[0079] Specifically, install the light transmitting and receiving component 100 and the reflecting component 200 so that the light energy emitted by the light emitter 101 can be received by the light receiver 102. During installation, it is necessary to ensure that the device can form an effective safety light curtain.

[0080] Install the cleaning component 300 to prevent the light transmitting and receiving component 100 from failing due to dust during use. The surface of the light transmitting and receiving component 100 is perpendicular to the direction of the light of the safety light curtain, while the surface of the reflector 202 of the reflecting component 200 is used to reflect the light of the safety light curtain, so there is a certain angle with the direction of the light of the safety light curtain. When installing the cleaning component 300, the cleaning component 300 installed on the reflecting component 200 mainly uses the nozzle assembly 400 in the middle of the water outlet plate 304 to clean the reflector 202, while for the cleaning component 300 installed on the light transmitting and receiving component 100, when the light emitter 101 and the light receiver 102 are arranged side by side, the nozzle assembly 400 in the middle of the water outlet plate 304 may not be able to spray the light emitter 101 and the light receiver 102, so the nozzle assembly 400 on both sides of the water outlet plate 304 is used, and when the light emitter 101 and the light receiver 102 are not arranged side by side, the nozzle assembly 400 in the middle of the water outlet plate 304 can be used.

[0081] To improve the cleaning efficiency, the water outlet plate 304 is arc-shaped so that the nozzle assembly 400 above can spray the light transmitting and receiving component 100 and the reflecting component 200 as much as possible.

[0082] Adjust the cleaning mode of the cleaning component 300 to prepare for cleaning the light transmitting and receiving component 100. The cleaning component 300 can use the fixed mode, raise or lower the lifting plate 305 to a certain distance, and only use the nozzle assembly 400 in the middle of the water outlet plate 304 to clean the reflector 202 and the non-side-by-side light emitter 101 and light receiver 102; use the nozzle assembly 400 on both sides of the water outlet plate 304 to clean the side-by-side light emitter 101 and light receiver 102. It can also use the sweeping mode, let the lifting plate 305 rise and fall repeatedly, and use all the nozzle assemblies 400 to clean the facing light transmitting and receiving component 100 and reflecting component 200.

[0083] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A safety light curtain, characterized in that: including, a light emitting and receiving component (100), including a light emitter (101) and a light receiver (102), the light emitter (101) and the light receiver (102) being parallel; a cleaning component (300), disposed on one side of the light emitting and receiving component (100), including a cleaning base (301) and a water outlet plate (304), the water outlet plate (304) being disposed on the cleaning base (301); and, a nozzle component (400), disposed on the water outlet plate (304), including a nozzle head (403), facing the light emitting and receiving component (100).

2. The safety light curtain according to claim 1, wherein: It further includes, a reflection component (200), having at least one group, disposed on the side of the light emitting and receiving component (100), including a second mounting base (201) and a reflecting mirror (202), the reflecting mirror (202) being disposed on the side of the mounting base (201), the light emitter (101), the light receiver (102) and multiple groups of the reflecting mirrors (202) not being collinear, and the light emitted by the light emitter (101) being reflected by multiple groups of the reflecting mirrors (202) and then irradiating on the light receiving surface of the light receiver (102).

3. The safety light curtain according to claim 2, wherein: the light emitting and receiving component (100) further includes a first mounting base (103), and the light emitter (101) and the light receiver (102) are disposed on the top of the first mounting base (103).

4. The safety light curtain according to claim 3, wherein: the number of the cleaning components (300) is one more than that of the reflection components (200), the cleaning components (300) respectively correspond to the reflection components (200) one by one, and the extra cleaning component (300) faces the light emitting and receiving component (100).

5. The safety light curtain according to claim 3 or 4, wherein: the nozzle component (400) further includes a fixing member (401) and a rotating member (402), one end of the fixing member (401) is connected to the water outlet plate (304), the other end is connected to one end of the rotating member (402), and the other end of the rotating member (402) is connected to the nozzle head (403).

6. The safety light curtain according to claim 5, wherein: the cleaning component (300) further includes a water inlet (302) and a lead screw (303), the water inlet (302) is disposed on one side of the cleaning base (301), and the lead screw (303) is disposed on the other side of the cleaning base (301).

7. The safety light curtain according to claim 6, wherein: the cleaning component (300) further includes a lifting plate (305), which cooperates with the lead screw (303), and a lifting hole (H1) is provided on the lifting plate (305), and the lifting hole (H1) cooperates with the nozzle component (400).

8. The safety light curtain according to claim 7, wherein: The fixing member (401) includes an inlet straight pipe (401a), an outlet spherical pipe (401b), a limit plate (401c), a limit spring (401d), and a limit arc pipe (401e); the inlet straight pipe (401a) is arranged at one end of the outlet spherical pipe (401b), and the inlet straight pipe (401a) communicates with the outlet plate (304); the limit plate (401c) is arranged on one side of the inlet straight pipe (401a); one end of the limit spring (401d) is arranged at the center of the limit plate (401c), and the other end faces the rotating member (402); the limit arc pipe (401e) is arranged inside the limit spring (401d).

9. The safety light curtain according to claim 8, wherein: The rotating member (402) includes an inlet spherical pipe (402a), an outlet straight pipe (402b), and a limit arc rod (402c); the inlet spherical pipe (402a) is sleeved outside the outlet spherical pipe (401b); the outlet straight pipe (402b) communicates with one end of the outlet spherical pipe (401b); one end of the limit arc rod (402c) is arranged on the side of the outlet straight pipe (402b), and the other end is sleeved inside the limit arc pipe (401e).

10. A method for using a safety light curtain, characterized in that: Applied to the safety light curtain according to any one of claims 1 to 9, the method includes Installing the light emitting and receiving component (100) and the reflection component (200) so that the light energy emitted by the light emitter (101) can be received by the light receiver (102); Installing the cleaning component (300) to prevent the light emitting and receiving component (100) from failing due to dust during use; Adjusting the cleaning mode of the cleaning component (300) to prepare for cleaning the light emitting and receiving component (100).

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