An infrared gold-plated heating tube

Abstract

The present invention discloses an infrared gold-plated heating tube, comprising a gold-plated heating tube, a connecting block and an anti-vibration frame; both ends of the gold-plated heating tube are installed with connecting blocks, the anti-vibration frame is arranged on the connecting block, the anti-vibration frame comprises a mounting frame, a clamping block, a first spring, and a mounting tube, and is connected to the end of the gold-plated heating tube through the connecting block, and the arranged gold-plated heating tube can adapt to heating tubes with gears of different sizes, so that they can be tightly connected. The gold-plated heating tube is connected to the connecting block through the anti-vibration frame and the clamping block to prevent the gold-plated heating tube itself from being squeezed and broken, and the anti-vibration frame and the first spring can buffer most of the heat transmitted to the gold-plated heating tube to prevent the heating tube from being affected and broken. At the same time, a cleaning piece is also arranged on the gold-plated heating tube, and the cleaning piece can perform multi-angle automatic information on the heating tube to remove stains adhered to the surface of the heating tube, to prevent the stains on the heating tube from affecting the divergence of the heat radiation of the heating tube, and to improve the heating efficiency.

Description

Technical Field

[0001] The invention relates to the field of heating tubes, and more specifically to an infrared gold-plated heating tube. Background Art

[0002] Infrared gold-plated heating tube is a tubular heater that uses the infrared principle. It has the characteristics of high thermal efficiency, high power density, and fast heating speed. Therefore, it is widely used in industrial heating and drying. In the process of industrial use, the infrared heating tube is installed on the surface of the device for heating. However, in the existing devices, the infrared gold-plated heating tube is usually directly installed on the surface of the equipment. When the equipment vibrates, the vibration is easily transmitted to the heating tube, causing the heating tube to break and damage. This will affect the heating effect and may also cause the heating tube to be directly scrapped, causing losses. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing infrared gold-plated heating tube is easily damaged by the vibration transmitted from the installation equipment during use. In order to overcome the defects of the prior art, the present invention proposes an infrared gold-plated heating tube, which can buffer the vibration transmitted from the outside, reduce the impact on the heating tube, and avoid damage to the heating tube.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The invention provides an infrared gold-plated heating tube, comprising a gold-plated heating tube, a connecting block and an anti-vibration frame; both ends of the gold-plated heating tube are installed with connecting blocks, the anti-vibration frame is arranged on the connecting block, the anti-vibration frame comprises a mounting frame, a clamping block, a first spring, and a mounting tube, the mounting frame is sleeved on the outside of the connecting block, two clamping blocks are connected to the inner side of the mounting frame through the first spring, the clamping blocks are clamped outside the connecting block, and both sides of the mounting frame are connected with the mounting tube; the clamping block comprises an arc plate and a locking plate, both sides of the arc plate are connected with the locking plates, a locking bolt is connected to the locking plate of one clamping block, a locking hole is opened on the locking plate of the other clamping block, the locking bolt is plugged and matched with the locking hole, and the arc plate is clamped outside the connecting block.

[0006] In a preferred technical solution of the present invention, the connecting block includes a threaded barrel, a first screw and a top block, two or more top blocks are hinged at one end of the threaded barrel, the threaded barrel extends into the gold-plated heating tube, the first screw is threadedly connected to the threaded barrel, the top block is arranged in a triangle, and the first screw is on one side of the top block.

[0007] In a preferred technical solution of the present invention, it also includes a reflector and a mounting ring. The two mounting frames are both mounted with mounting rings, and the mounting rings are located on the opposite surfaces of the two mounting frames. The mounting rings are provided with mounting grooves, and the mounting grooves have multiple notches at the beginning. The reflector is configured as an arc-shaped cover, and both ends of the reflector are inserted into the mounting grooves of adjacent mounting rings. A reflective coating is provided on the inner side of the reflector, and a protrusion is provided on the reflector, which is engaged with the notch.

[0008] In a preferred technical solution of the present invention, it also includes a cleaning piece, which includes a slide seat and a cleaning ring; the slide rod is connected between the two mounting frames, the slide seat is slidably connected to the slide rod, the cleaning ring is arranged in the slide seat, the cleaning ring is sleeved on the outside of the gold-plated heating tube, and bristles are arranged on the inside of the cleaning ring.

[0009] In a preferred technical solution of the present invention, both sides of the cleaning ring are rotatably connected with auxiliary brush rings through bearings, and the auxiliary brush rings are sleeved outside the gold-plated heating tube.

[0010] In a preferred technical solution of the present invention, the cleaning member also includes a driving member, which includes a motor, a second screw and a threaded seat; the motor is fixed to one side of one of the mounting frames, one end of the second screw is connected to the power output end of the motor, and the other end of the second screw is rotatably connected to one side of the other mounting frame, the threaded seat is fixed to the top of the sliding seat, the second screw passes through the sliding seat and the second screw cooperates with the sliding seat thread.

[0011] In a preferred technical solution of the present invention, the driving member also includes a driving rod, a belt, a rubber wheel and a threaded wheel; the driving rod is rotatably connected in the sliding seat, the threaded wheel and the rubber wheel are both fixed on the driving rod, the cleaning ring is rotatably connected in the sliding ring, the belt is sleeved outside the rubber wheel and the cleaning ring, and the threaded wheel is threadedly connected to the second screw.

[0012] In a preferred technical solution of the present invention, the driving member further includes a gear and a gear ring, gears are fixed to both ends of the driving rod, the gear ring is fixed to the outer side of the auxiliary brush ring, and the gears are meshed with adjacent gears.

[0013] In a preferred technical solution of the present invention, the cleaning component further includes a humidifying component, which includes a water pipe, a pipe collector and a dripping component; the water pipe extends into the slide seat, the pipe collector is arranged on one of the mounting frames, the water pipe is wound around the pipe collector, the dripping component is arranged on the output end of the water pipe, and the dripping component includes a sleeve, a second spring, a sealing ring, a sealing plate, a connecting rod, a push plate and a push rod. The sleeve is connected to the output end of the water pipe, the sealing ring is fixed inside the sleeve, the sealing plate is against the top of the sealing ring, one end of the connecting rod is connected to the sealing plate, the other end of the connecting rod extends outside the sleeve and is connected to the top plate, the second spring is against between the sealing ring and the push plate, the push rod is fixed on the driving rod, and the push plate is located on the rotation path of the push rod.

[0014] In a preferred technical solution of the present invention, an absorbent towel is arranged in the auxiliary brush ring.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides an infrared gold-plated heating tube, which is connected to the end of the gold-plated heating tube through a connecting block, and the gold-plated heating tube can be adapted to heating tubes with gears of different sizes so that they can be tightly connected. The gold-plated heating tube is connected to the connecting block through a shockproof frame and a clamping block to prevent the gold-plated heating tube itself from being squeezed and broken. The shockproof frame and the first spring can buffer most of the heat transmitted to the gold-plated heating tube to prevent the heating tube from being affected and broken. At the same time, a cleaning piece is also provided on the gold-plated heating tube, which can perform multi-angle automatic information on the heating tube to remove stains adhered to the surface of the heating tube, prevent the stains on the heating tube from affecting the divergence of the heat radiation of the heating tube, and improve the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an infrared gold-plated heating tube provided by a specific embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the side structure of the middle shock mount;

[0019] Figure 3 yes Figure 1 A schematic diagram of the side structure of the middle mounting ring;

[0020] Figure 4 It is a structural schematic diagram of a cleaning component in an infrared gold-plated heating tube provided by a specific embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a water dripping member in an infrared gold-plated heating tube provided by a specific embodiment of the present invention.

[0022] In the figure:

[0023] 1-gold-plated heating tube, 21-threaded tube, 22-first screw, 23-top block, 24-rubber pad, 31-mounting frame, 32-first spring, 33-clamping block, 331-arc plate, 332-locking plate, 333-locking hole, 334-locking bolt, 34-mounting tube, 41-reflector, 42-mounting ring, 43-mounting groove, 44-notch, 45-bump, 51-sliding seat, 52- Cleaning ring, 53-sliding rod, 54-threaded seat, 55-second screw, 56-motor, 57-driving rod, 58-threaded wheel, 59-rubber wheel, 50-belt, 61-auxiliary brush ring, 62-bearing, 63-toothed ring, 64-gear, 71-water pipe, 72-sleeve, 73-sealing ring, 74-sealing plate, 75-second spring, 76-connecting rod, 77-push plate, 78-push rod. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] like Figure 1-5 As shown, an infrared gold-plated heating tube is provided in the embodiment, comprising a gold-plated heating tube 1, a connecting block and an anti-vibration frame; connecting blocks are installed at both ends of the gold-plated heating tube 1, and the anti-vibration frame is arranged on the connecting block. The anti-vibration frame comprises a mounting frame 31, a clamping block 33, a first spring 32, and a mounting tube 34. The mounting frame 31 is sleeved on the outside of the connecting block, and the two clamping blocks 33 are connected to the inner side of the mounting frame 31 through the first spring 32. The clamping blocks 33 are clamped outside the connecting block, and the mounting tubes 34 are connected to both sides of the mounting frame 31; the clamping block 33 comprises an arc plate 331 and a locking plate 332, and the locking plates 332 are connected to both sides of the arc plate 331, a locking bolt 334 is connected to the locking plate 332 of one of the clamping blocks 33, and a locking hole 333 is opened on the locking plate 332 of the other clamping block 33, the locking bolt 334 is plugged into and matched with the locking hole 333, and the arc plate 331 is clamped outside the connecting block.

[0026] During production installation, both ends of the gold-plated heating tube 1 are connected to the connecting block, and then the connecting block is connected to the shockproof frame. The gold-plated heating tube 1 is indirectly fixed by connecting the connecting block through the shockproof frame, which can further buffer the vibration. The mounting frame 31 is connected to the mounting table, and the mounting tube 34 on the side of the mounting frame 31 can be used to tightly fix the mounting frame 31 to the mounting table during installation, so that the heating tube can be firmly fixed as a whole. The external vibration is transmitted to the mounting frame 31, and is first buffered by the first spring 32 to reduce the vibration transmitted to the clamping block 33. The clamping block 33 is clamped to the outside of the connecting block, and the connecting block is clamped between the upper and lower clamping blocks 33. A rubber block is set on the inner side of the arc plate 331, and the connecting block is clamped by the rubber block to prevent the connecting block from loosening during use and also to prevent the connecting block from deflecting. After the upper and lower arc plates 331 are connected, the locking bolts 334 on the locking plates 332 on the sides of the arc plates 331 are inserted into the locking holes 333 on the other locking plates 332 to lock the two arc plates 331, thereby preventing the arc plates 331 from loosening during normal use, which may cause the connection block to be unstable and affect the normal use of the heating tube, thereby improving stability. At the same time, such a setting is more convenient and direct when it is necessary to disassemble the gold-plated heating tube 1 from the connection block, and both can be disassembled for maintenance without complicated steps.

[0027] Further, the connection block includes a threaded barrel 21, a first screw 22 and a top block 23, two or more top blocks 23 are hinged at one end of the threaded barrel 21, the threaded barrel 21 extends into the gold-plated heating tube 1, the first screw 22 is threadedly connected to the threaded barrel 21, and the top block 23 is set in a triangle shape, and the first screw 22 is on one side of the top block 23. When the connection block is connected to the inside of the gold-plated heating tube 1, the threaded barrel 21 is first inserted into the gold-plated heating tube 1, and then the first screw 22 is rotated to move the first screw 22 in the direction of the gold-plated heating tube 1. At this time, the top block 23 located in the gold-plated heating tube 1 is lifted by the first screw 22, and then pressed against the inner wall of the gold-plated heating tube 1, so that the connection block and the gold-plated heating tube 1 are fixed to one body. After being fixed, the first screw 22 is locked to prevent it from rotating in subsequent work. When the connection block needs to be removed from the gold-plated heating tube 1, it is only necessary to rotate the first screw 22 in the opposite direction to loosen the support of the first screw 22 on the top block 23, thereby eliminating the fixed connection between the threaded barrel 21 and the gold-plated heating tube 1. The rubber pad 24 provided on the side where the top block 23 is connected to the gold-plated heating tube 1 can buffer the connection between the top block 23 and the gold-plated heating tube 1 to prevent the gold-plated heating tube 1 from being crushed by the top block 23, and can also make the connection between the top block 23 and the gold-plated heating tube 1 tighter to prevent slipping.

[0028] Furthermore, it also includes a reflector 41 and a mounting ring 42. The two mounting frames 31 are both mounted with a mounting ring 42, and the mounting ring 42 is located on the opposite surface of the two mounting frames 31; the mounting ring 42 is provided with a mounting groove 43, and the mounting groove 43 has a plurality of notches 44 at the beginning; the reflector 41 is configured as an arc-shaped cover, and both ends of the reflector 41 are inserted into the mounting groove 43 of the adjacent mounting ring 42. The inner side of the reflector 41 is provided with a reflective coating, and the reflector 41 is provided with a protrusion 45, and the protrusion 45 is engaged with the notch 44. When the gold-plated heating tube 1 is working, the tube will emit heat radiation, and the inner side of the reflector 41 is provided with a reflective layer, which can reflect the heat radiation emitted by the heating tube to one direction, so that the heat is more concentrated, and the arc-shaped cover can also slide on the mounting groove 43. According to the direction in which heating is required during use, the reflector 41 is slid along the mounting groove 43 to the opposite side relative to the direction, so that it can reflect heat in the direction.

[0029] Furthermore, it also includes a cleaning part, which includes a slide 51 and a cleaning ring 52; the slide rod 53 is connected between the two mounting frames 31, the slide 51 is slidably connected to the slide rod 53, the cleaning ring 52 is arranged in the slide seat 51, the cleaning ring 52 is sleeved on the outside of the gold-plated heating tube 1, and bristles are arranged on the inside of the cleaning ring 52.

[0030] During long-term use, stains are easily accumulated on the surface of the gold-plated heating tube 1, which in turn affects the heat radiation efficiency of the heating tube and reduces the heating effect. Therefore, the surface of the heating tube needs to be cleaned. When cleaning its surface, the slide 51 slides along the gold-plated heating tube 1, and the cleaning ring 52 brushes the gold-plated heating tube 1 with the inner bristles, thereby brushing away the stains on its surface, keeping the gold-plated heating tube 1 clean, reducing the impact of stains on the gold-plated heating tube 1, and maintaining the heating efficiency.

[0031] Furthermore, both sides of the cleaning ring 52 are rotatably connected with auxiliary brush rings 61 through bearings 62, and the auxiliary brush rings 61 are sleeved outside the gold-plated heating tube 1. When the cleaning ring 52 moves forward for cleaning, the auxiliary brush ring 61 also performs cleaning synchronously. Through the coordinated cooperation of the auxiliary brush ring 61 and the cleaning ring 52, the surface of the gold-plated heating tube 1 is fully and thoroughly cleaned, so that the gold-plated heating tube 1 can maintain a clean state for operation.

[0032] Furthermore, the cleaning member also includes a driving member, which includes a motor 56, a second screw 55 and a threaded seat 54; the motor 56 is fixed to one side of one of the mounting frames 31, one end of the second screw 55 is connected to the power output end of the motor 56, the other end of the second screw 55 is rotatably connected to one side of the other mounting frame 31, the threaded seat 54 is fixed to the top of the slide 51, the second screw 55 passes through the slide 51 and the second screw 55 is threadedly engaged with the slide 51. The motor 56 rotates the second screw 55, and the second screw 55 is threadedly engaged with the threaded seat 54 on the slide, thereby driving the slide 51 to move on the gold-plated heating tube 1 as a whole. The forward and reverse rotation of the motor 56 can drive the slide 51 to move to both sides, and can automatically clean various positions on the gold-plated heating tube 1, and after the cleaning is completed, the motor 56 can drive the slider to reset back to the side of the gold-plated heating tube 1.

[0033] Furthermore, the driving member also includes a driving rod 57, a belt 50, a rubber wheel 59 and a threaded wheel 58; the driving rod 57 is rotatably connected to the slide seat 51, the threaded wheel 58 and the rubber wheel 59 are fixed on the driving rod 57, the cleaning ring 52 is rotatably connected to the slide ring, the belt 50 is sleeved outside the rubber wheel 59 and the cleaning ring 52, and the threaded wheel 58 is threadedly connected to the second screw rod 55. The motor 56 drives the second screw rod 55 to rotate, the second screw rod 55 drives the threaded wheel 58 to rotate through meshing, the threaded wheel 58 drives the driving rod 57 to rotate, and the rubber wheel 59 on the driving rod 57 drives the cleaning ring 52 to rotate, so that the cleaning ring 52 can also rotate and scrub the surface of the gold-plated heating tube 1 during the movement, thereby improving the cleaning effect.

[0034] Furthermore, the driving member also includes a gear 64 and a gear ring 63. Gears 64 are fixed at both ends of the driving rod 57. The gear ring 63 is fixed to the outside of the auxiliary brush ring 61, and the gear 64 meshes with the adjacent gear 64. During the rotation of the driving rod 57, the gears 64 at both ends of the driving rod 57 rotate synchronously. The gear 64 drives the auxiliary brush ring 61 to rotate through the gear ring 63. The rotation direction of the auxiliary brush ring 61 is opposite to that of the cleaning ring 52. Through the opposite rotation directions between the two, the gold-plated heating tube 1 can be better cleaned, the cleaning can be more thorough, and the entire cleaning process can be automated.

[0035] Furthermore, the cleaning member further comprises a humidifying member, which comprises a water pipe 71, a pipe collector and a dripping member; the water pipe 71 extends into the slide seat 51, the pipe collector is arranged on one of the mounting frames 31, the water pipe 71 is wound around the pipe collector, the dripping member is arranged on the output end of the water pipe 71, and the dripping member comprises a sleeve 72, a second spring 75, a sealing ring 73, a sealing plate 74, a connecting rod 76, a push plate 77 and a push rod 78. The sleeve 72 is connected to the output end of the water pipe 71, the sealing ring 73 is fixed inside the sleeve 72, the sealing plate 74 is against the top of the sealing ring 73, one end of the connecting rod 76 is connected to the sealing plate 74, the other end of the connecting rod 76 extends to the outside of the sleeve 72 and is connected to the top plate, the second spring 75 is against between the sealing ring 73 and the push plate 77, the push rod 78 is fixed on the driving rod 57, and the push plate 77 is located on the rotation path of the push rod 78. In this embodiment, the tube collector is a common torsion spring tube collector, which can extend and contract the water pipe 71 wound thereon. The external water source is delivered to the water pipe 71. When the driving rod 57 rotates, the push rod 78 also rotates. When the lever turns to the push plate 77, it will drive the top plate to rise for a short time, and then drive the sealing plate 74 to move up and away from the sealing ring 73. The water in the water pipe 71 will be discharged to the cleaning ring 52, so that the cleaning ring 52 can mix the water to clean the gold-plated heating tube 1, thereby improving the cleaning effect. After the push rod 78 leaves the push plate 77, the sealing plate 74 is reset under the support of the second spring 75 and re-pressed onto the sealing ring 73 to keep the water pipe 71 sealed, thereby preventing water from dripping out of the water pipe 71. In this embodiment, when the motor 56 stops, the push rod 78 is located away from the push plate 77 to prevent the water pipe 71 from being in an open state when the motor 56 stops.

[0036] Furthermore, an absorbent towel is provided in the auxiliary brush ring 61. The absorbent towel can absorb excess water during the cleaning process and also keep the auxiliary brush ring 61 moist.

[0037] Other technologies of this embodiment adopt existing technologies.

[0038] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. An infrared gold-plated heating tube, characterized in that: It comprises a gold-plated heating tube (1), a connecting block and a shockproof frame; Both ends of the gold-plated heating tube (1) are equipped with connecting blocks, and the shockproof frame is arranged on the connecting block. The shockproof frame comprises a mounting frame (31), a clamping block (33), a first spring (32), and a mounting tube (34). The mounting frame (31) is sleeved on the outside of the connecting block, and the two clamping blocks (33) are connected to the inner side of the mounting frame (31) through the first spring (32). The clamping blocks (33) are clamped outside the connecting block. Both sides of the mounting frame (31) are connected to the mounting tube (34). 4); the clamping block (33) comprises an arc-shaped plate (331) and a locking plate (332), the locking plates (332) are connected to both sides of the arc-shaped plate (331), a locking bolt (334) is connected to the locking plate (332) of one clamping block (33), a locking hole (333) is provided on the locking plate (332) of the other clamping block (33), the locking bolt (334) is plugged into and matched with the locking hole (333), and the arc-shaped plate (331) is clamped outside the connecting block; Also included is a cleaning member, which includes a sliding seat (51) and a cleaning ring (52); The slide bar (53) is connected between the two installation frames (31), and the slide seat (51) is slidably connected to the slide bar (53). The cleaning ring (52) is arranged in the sliding seat (51), the cleaning ring (52) is sleeved outside the gold-plated heating tube (1), and bristles are arranged on the inner side of the cleaning ring (52); Both sides of the cleaning ring (52) are rotatably connected to auxiliary brush rings (61) via bearings (62), and the auxiliary brush rings (61) are sleeved outside the gold-plated heating tube (1); The cleaning member also includes a driving member, The driving member comprises a motor (56), a second screw rod (55) and a threaded seat (54); The motor (56) is fixed to one side of one of the installation frames (31), one end of the second screw rod (55) is connected to the power output end of the motor (56), the other end of the second screw rod (55) is rotatably connected to one side of the other installation frame (31), the threaded seat (54) is fixed to the top of the slide seat (51), the second screw rod (55) passes through the slide seat (51) and the second screw rod (55) is threadedly matched with the slide seat (51); The driving member further comprises a driving rod (57), a belt (50), a rubber wheel (59) and a threaded wheel (58); The driving rod (57) is rotatably connected to the sliding seat (51), the threaded wheel (58) and the rubber wheel (59) are both fixed on the driving rod (57), the cleaning ring (52) is rotatably connected to the sliding ring, the belt (50) is sleeved outside the rubber wheel (59) and the cleaning ring (52), and the threaded wheel (58) is threadedly connected to the second screw rod (55); The driving member further comprises a gear (64) and a gear ring (63). Gears (64) are fixed to both ends of the driving rod (57), a gear ring (63) is fixed to the outside of the auxiliary brush ring (61), and the gear (64) is meshed with an adjacent gear (64); The cleaning element also includes a humidifying element, which includes a water delivery pipe (71), a pipe collector and a water dripping element; The water delivery pipe (71) extends into the sliding seat (51), the pipe collector is arranged on one of the installation frames (31), the water delivery pipe (71) is wound around the pipe collector, and the dripping piece is arranged on the output end of the water delivery pipe (71). The dripping member comprises a sleeve (72), a second spring (75), a sealing ring (73), a sealing plate (74), a connecting rod (76), a push plate (77) and a push rod (78); The sleeve (72) is connected to the output end of the water pipe (71), the sealing ring (73) is fixed inside the sleeve (72), the sealing plate (74) is against the top of the sealing ring (73), one end of the connecting rod (76) is connected to the sealing plate (74), the other end of the connecting rod (76) extends to the outside of the sleeve (72) and is connected to the top plate, the second spring (75) is against between the sealing ring (73) and the push plate (77), the push rod (78) is fixed on the driving rod (57), and the push plate (77) is located on the rotation path of the push rod (78); A water-absorbing towel is arranged inside the auxiliary brush ring (61).

2. The infrared gold-plated heating tube according to claim 1, characterized in that: The connecting block comprises a threaded barrel (21), a first screw rod (22) and a top block (23). Two or more top blocks (23) are hinged to one end of the threaded barrel (21), the threaded barrel (21) extends into the gold-plated heating tube (1), the first screw rod (22) is threadedly connected to the threaded barrel (21), the top block (23) is arranged in a triangle, and the first screw rod (22) is on one side of the top block (23).

3. The infrared gold-plated heating tube according to claim 1, characterized in that: It also includes a reflector (41) and a mounting ring (42), wherein the two mounting frames (31) are both mounted with the mounting ring (42), and the mounting ring (42) is located on the opposite surfaces of the two mounting frames (31); The mounting ring (42) is provided with a mounting groove (43), and a plurality of notches (44) are formed at the beginning of the mounting groove (43). The reflector (41) is configured as an arc-shaped cover, and both ends of the reflector (41) are inserted into the mounting groove (43) of the adjacent mounting ring (42). A reflective coating is provided on the inner side of the reflector (41), and a convex block (45) is provided on the reflector (41), and the convex block (45) is engaged with the notch (44).

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