Anti-explosion and anti-corrosion indicator lamp

Abstract

An anti-explosion and anti-corrosion indicator lamp comprises a lamp holder and a lamp cap, the lamp cap is arranged outside a lamp tube of the lamp holder in a covering mode, the lamp cap comprises a cap shell body, a first lampshade shell, a second lampshade shell, a first sealing ring and a second sealing ring, a cavity with the two ends communicated is formed in the cap shell body, and a containing cavity with the large inner diameter is arranged at the communicated position of the upper end of the cavity. The first lampshade shell is made of light condensing materials and arranged in the containing cavity in a covering mode, the second lampshade shell is located on the outer side of the first lampshade shell and detachably fixed in the containing cavity, the second lampshade shell further fixes the first lampshade shell, and the first sealing ring and the second sealing ring are arranged between the upper portion of the second lampshade shell and the upper portion of the containing cavity in a vertically spaced mode. An explosion-proof joint face is further formed between the lower portion of the second lampshade shell and the lower portion of the containing cavity. The lamp tube is prevented from being broken to a certain extent, the lamp tube can well adapt to a dangerous explosion environment, and the lamp tube is safer to use.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical equipment technology, and in particular to an explosion-proof and corrosion-resistant indicator light. Background Technology

[0002] Explosion-proof indicator lights, as the name suggests, are designed for use in harsh and dangerous explosive environments. Examples include industries such as coal mining, paint or ink manufacturing, timber processing, cement plants, shipping, and wastewater treatment. These industries all require explosion-proof indicator lights. While existing explosion-proof indicator lights typically use a light-transmitting tube surrounding the bulb for protection, relying solely on this tube is often insufficient. If the tube is shattered by shrapnel from an explosion, the bulb will also break, rendering it inoperable. Therefore, they are not well-suited for use in hazardous explosive environments. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an explosion-proof and corrosion-resistant indicator light that can prevent the lamp tube from being broken to a certain extent, can adapt well to relatively dangerous explosive environments, and is safer to use.

[0004] The technical solution adopted by this utility model to solve its technical problem is an explosion-proof and corrosion-resistant indicator light, including a lamp holder and a lamp cap. The lamp cap is installed over the lamp tube of the lamp holder. An explosion-proof sealing structure is provided between the lamp cap and the panel. The lamp cap and the lamp holder are detachably connected and fitted. The lamp cap includes a cap body, a first lamp cover, a second lamp cover, a first sealing ring, and a second sealing ring. The cap body has a cavity with two through-holes at both ends, and the upper through-hole of the cavity is set as a large-diameter placement cavity. The first lamp cover is made of light-concentrating material and is installed inside the placement cavity. The second lamp cover is outside the first lamp cover and is detachably fixed inside the placement cavity. The second lamp cover also forms a fixation for the first lamp cover. The first sealing ring and the second sealing ring are arranged vertically between the upper part of the second lamp cover and the upper part of the placement cavity. An explosion-proof joint surface is also formed between the lower part of the second lamp cover and the lower part of the placement cavity.

[0005] The advantages of the above technical solution are as follows: The double-layer structure of the first and second lampshade shells, combined with the main body of the cap shell, provides excellent protection for the lamp tube extending beyond the panel, preventing it from being shattered to a certain extent. It is well-suited to relatively dangerous explosive environments. Furthermore, the first lampshade shell is made of a focusing material, ensuring the indicating effect after installation. The first lampshade shell is fixed within the placement cavity by the second lampshade shell, which is detachably fixed within the cavity. This allows for the replacement of both the first and second lampshade shells, effectively reducing costs. The first and second sealing rings provide a double seal between the second lampshade shell and the placement cavity. The explosion-proof joint surface further enhances the sealing performance of the entire device, preventing the intrusion of corrosive liquids and isolating dust from external gases, thus effectively preventing explosions caused by these substances entering the explosion-proof equipment. It possesses excellent explosion-proof performance and is therefore safer to use overall.

[0006] Furthermore, the indicator light also includes a lamp cap mounting base with a mounting through hole. The lower end of the lamp cap is installed in the mounting through hole. The left and right sides of the lamp cap mounting base are also provided with locking blocks. The left and right sides of the lamp base are provided with elastic locking plates and elastic support plates in groups. The inner side of the locking plate is provided with a corresponding locking groove. The locking blocks cooperate with the locking grooves. The support plate is located inside the locking plates and forms a support for the lamp cap mounting base.

[0007] The advantages of the above technical solution are as follows: the lamp cap mounting base is connected to the lower end of the lamp cap through the mounting through hole, and the lamp cap and lamp holder are installed as a whole through the cooperation of the locking block and the locking groove on the locking plate. At the same time, the locking plate is elastic, which facilitates the fixing and disassembly of the lamp cap mounting base. The elastic support plate provides support for the lamp cap mounting base, making the integrated installation of the lamp cap, lamp cap mounting base and lamp holder more stable.

[0008] Furthermore, a snap-fit ​​ring groove is formed on the lower outer wall surface of the lamp cap, and a threaded protrusion and an elastic snap-fit ​​portion are formed at the mounting through hole of the lamp cap fixing seat. A fixing screw is installed in the threaded protrusion, and the fixing screw, the snap-fit ​​portion and the snap-fit ​​ring groove cooperate with each other.

[0009] The advantages of the above technical solution are as follows: During installation, the lower end of the lamp cap mates with the mounting through hole. After installation, the elastic buckle will engage with the mounting ring groove. Then, by turning the fixing screw in the threaded protrusion, the fixing screw and the mounting ring groove are tightened together, and the lamp cap mounting base is fixedly connected to the lamp cap. During disassembly, the fixing screw is turned in the opposite direction, and the elastic buckle is disengaged from the mounting ring groove, thus achieving the disassembly of the lamp cap mounting base from the lamp cap.

[0010] Furthermore, the main body of the cap includes a bottom shell and a top shell. The top shell is detachably fixed to the upper end of the bottom shell, and the top shell forms a fixation on the second lampshade shell. The lamp cap also includes a third sealing ring, which is disposed between the upper end of the bottom shell and the top shell. The first sealing ring is disposed opposite to the top shell, and the second sealing ring is disposed opposite to the bottom shell.

[0011] The advantages of adopting the above technical solution are as follows: The main body of the cap adopts an assembled structure that connects the bottom shell and the top shell, making the overall structure of the lamp cap more reasonable and facilitating the installation and replacement of the first and second lamp cover shells. The third sealing ring seals the gap between the top shell and the bottom shell, the first sealing ring seals the gap between the top shell and the upper part of the second lamp cover shell, and the second sealing ring seals the gap between the bottom shell and the upper part of the second lamp cover shell. Therefore, the sealing between the bottom shell, the top shell, and the second lamp cover shell is effectively achieved, resulting in high overall sealing performance and better corrosion resistance.

[0012] Furthermore, the placement cavity is provided with a first fixing ring block at the top of the cover, and the second fixing ring block is provided at the top of the upper part of the second lampshade. The first fixing ring block and the second fixing ring block cooperate to fix the cover to the second lampshade.

[0013] The advantages of the above technical solution are: after the cover and the second lampshade are installed in place, the first fixing ring block will limit the second fixing ring block, thereby fixing the cover to the second lampshade. The structure is simple and reasonable.

[0014] Furthermore, the upper part of the second lamp cover housing is formed with a first mounting ring groove and a second mounting ring groove, the first mounting ring groove and the second mounting ring groove are arranged below the second fixing ring block, and the upper end of the bottom housing is formed with a third mounting ring groove. The first mounting ring groove cooperates with the first sealing ring, the second mounting ring groove cooperates with the second sealing ring, and the third mounting ring groove cooperates with the third sealing ring.

[0015] The advantages of adopting the above technical solution are: by setting the first mounting ring groove, the second mounting ring groove, and the third mounting ring groove, the positions of the first sealing ring, the second sealing ring, and the third sealing ring are effectively defined, ensuring the reliability of the seal.

[0016] Furthermore, an external thread is formed on the upper outer peripheral wall of the bottom shell, and an internal thread is formed on the inner peripheral wall of the cover shell, the internal thread engaging with the external thread.

[0017] The advantages of adopting the above technical solution are: the bottom shell and the cover shell are fixed by the cooperation of the external thread and the internal thread, which makes installation and disassembly convenient and the structural design is reasonable.

[0018] Furthermore, the upper inner diameter of the placement cavity is larger than the lower inner diameter of the placement cavity, and the upper diameter of the second lampshade housing is larger than the lower diameter of the second lampshade housing.

[0019] The advantages of adopting the above technical solution are: the placement cavity and the second lamp cover shell have a reasonable structural design, which facilitates the processing and formation of the explosion-proof joint surface. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the bottom shell and the cover shell of this utility model;

[0022] Figure 3 This is a schematic diagram of the lamp cap fixing base structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the lamp holder structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the second lampshade housing structure of this utility model.

[0025] In the diagram: 1-Lamp holder, 2-Lamp tube, 3-Cap body, 4-First lamp cover, 5-Second lamp cover, 6-First sealing ring, 7-Second sealing ring, 8-Cavity, 9-Explosion-proof mating surface, 10-Lamp cap fixing seat, 11-Mounting through hole, 12-Clamping block, 13-Clamping plate, 14-Support plate, 15-Clamping groove, 16-Clamping ring groove, 17-Threaded protrusion, 18-Snap-on, 19-Fixing screw, 20-Bottom shell, 21-Cover shell, 22-Third sealing ring, 23-First fixing ring block, 24-Second fixing ring block, 25-First mounting ring groove, 26-Second mounting ring groove, 27-Third mounting ring groove, 28-External thread, 29-Internal thread. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0027] Please see Figures 1 to 5 As shown, an explosion-proof and corrosion-resistant indicator light includes a lamp holder 1 and a lamp cap. The lamp cap covers the lamp tube 2 of the lamp holder 1. An explosion-proof sealing structure is provided between the lamp cap and the panel. The lamp cap and the lamp holder 1 can also be detachably connected and fitted. More specifically, the lamp cap includes a cap body 3, a first lamp cover 4, a second lamp cover 5, a first sealing ring 6, and a second sealing ring 7.

[0028] In this embodiment, the main body 3 of the cap shell has a cavity 8 that extends through both ends. The lamp tube 2 extends into the bottom opening of the cavity 8, and the upper end of the cavity 8 is a large-diameter placement cavity. The first lamp cover 4 is made of a light-concentrating material and is placed inside the placement cavity. The second lamp cover 5 is outside the first lamp cover 4 and is detachably fixed inside the placement cavity. The second lamp cover 5 also forms a fixation for the first lamp cover 4. The double-layer structure of the first lamp cover 4 and the second lamp cover 5, in conjunction with the main body 3 of the cap shell, achieves good protection for the lamp tube 2 extending outside the panel, thus preventing the lamp tube 2 from being broken to a certain extent and adapting well to relatively... The hazardous explosion environment and the fact that the first lamp cover 4 is made of a light-concentrating material ensure the indicating effect after the first lamp cover 4 and the second lamp cover 5 are installed. The second lamp cover 5 is fixed in a detachable manner in the placement cavity, thus achieving the purpose of replacing the first lamp cover 4 and the second lamp cover 5, effectively reducing costs. It should be noted that a ring edge is formed on the bottom periphery of the first lamp cover 4, and the bottom of the second lamp cover 5 is pressed onto the ring edge on the bottom of the first lamp cover 4. Therefore, when the second lamp cover 5 is fixed in the placement cavity, the first lamp cover 4 can be fixed, and vice versa, the first lamp cover 4 and the second lamp cover 5 can be disassembled.

[0029] In this embodiment, the first sealing ring 6 and the second sealing ring 7 are arranged vertically between the upper part of the second lamp cover 5 and the upper part of the placement cavity. An explosion-proof mating surface 9 is also formed between the lower part of the second lamp cover 5 and the lower part of the placement cavity. The first sealing ring 6 and the second sealing ring 7 achieve the purpose of double sealing between the second lamp cover 5 and the placement cavity. With the setting of the explosion-proof mating surface 9, the sealing performance of the entire device is stronger, which can prevent the intrusion of corrosive liquids and isolate the entry of dust in the external gas, thereby effectively avoiding the explosion problem caused by entering the explosion-proof equipment. It has good explosion-proof performance and the overall use is safer.

[0030] In this embodiment, the indicator light also includes a lamp cap fixing base 10 with a mounting through hole 11. The lower end of the lamp cap is installed in the mounting through hole 11. More specifically, the lower end of the cap body 3 is installed in the mounting through hole 11. The left and right sides of the lamp cap fixing base 10 are also provided with locking parts 12. The left and right sides of the lamp holder 1 are provided with elastic locking plates 13 and elastic support plates 14. The inner side of the locking plate 13 is provided with corresponding locking grooves 15. The locking parts 12 cooperate with the locking grooves 15. The support plate 14 is located inside the locking plate 13. The support plate 14 forms support for the lamp cap fixing base 10. The lamp cap fixing base 10 is connected to the lower end of the lamp cap through the mounting through hole 11 and then through the locking parts. The engagement of the latching plate 12 with the latching slot 15 on the latching plate 13 achieves the purpose of installing the lamp cap and lamp holder 1 as a whole. At the same time, the latching plate 13 is elastically designed, which facilitates the fixing and disassembly of the lamp cap fixing seat 10. More specifically, the top of the latching plate 13 is designed with a corresponding slope so that the latching block 12 can quickly snap into the latching slot 15. During disassembly, the latching plate 13 can be deformed by external tools, so that the latching block 12 can be dislodged from the latching slot 15. The elastic support plate 14 can be an arc-shaped curved plate. The elastic support plate 14 provides support for the lamp cap fixing seat 10, making the integrated installation of the lamp cap, lamp cap fixing seat 10 and lamp holder 1 more stable.

[0031] In this embodiment, a snap-fit ​​groove 16 is formed on the lower outer wall of the lamp cap. More specifically, the snap-fit ​​groove 16 is formed on the lower outer wall of the cap body 3. The lamp cap fixing seat 10 has a threaded protrusion 17 and an elastic snap-fit ​​part 18 at the mounting through hole 11. A fixing screw 19 is installed in the threaded protrusion 17. The fixing screw 19, the snap-fit ​​part 18 and the snap-fit ​​groove 16 cooperate. During installation, the lower end of the lamp cap cooperates with the mounting through hole 11. After installation, the elastic snap-fit ​​part 18 will be snapped into the snap-fit ​​groove 16. Then, by turning the fixing screw 19 in the threaded protrusion 17, the fixing screw 19 and the snap-fit ​​groove 16 are tightened together, and the lamp cap fixing seat 10 can be fixedly connected to the lamp cap. During disassembly, the fixing screw 19 is turned in the opposite direction, and the elastic snap-fit ​​part 18 is disengaged from the snap-fit ​​groove 16, so that the lamp cap fixing seat 10 and the lamp cap can be disassembled.

[0032] In this embodiment, the main body 3 of the cap includes a bottom shell 20 and a top shell 21. The top shell 21 is detachably and fixedly connected to the upper end of the bottom shell 20, and the top shell 21 forms a fixation for the second lampshade shell 5. The lamp cap also includes a third sealing ring 22, which is disposed between the upper end of the bottom shell 20 and the top shell 21. The first sealing ring 6 is disposed opposite to the top shell 21, and the second sealing ring 7 is disposed opposite to the bottom shell 20. The main body 3 of the cap adopts an assembled structure in which the bottom shell 20 and the top shell 21 are connected, making the overall structure of the lamp cap more reasonable. This also facilitates the installation and replacement of the first lampshade housing 4 and the second lampshade housing 5, requiring only the removal and installation of the cover 21. The third sealing ring 22 seals the gap between the cover 21 and the bottom housing 20, the first sealing ring 6 seals the gap between the cover 21 and the upper part of the second lampshade housing 5, and the second sealing ring 7 seals the gap between the bottom housing 20 and the upper part of the second lampshade housing 5. Therefore, the sealing between the bottom housing 20, the cover 21 and the second lampshade housing 5 is effectively achieved, resulting in high overall sealing performance and better corrosion resistance.

[0033] In this embodiment, a first fixing ring block 23 is provided at the top of the housing 21, and a second fixing ring block 24 is provided at the top of the upper part of the second lampshade housing 5. The first fixing ring block 23 and the second fixing ring block 24 cooperate to fix the second lampshade housing 5 to the housing 21. After the housing 21 and the second lampshade housing 5 are installed in place, the first fixing ring block 23 will limit the second fixing ring block 24, thereby fixing the second lampshade housing 5 to the housing 21. The structure is simple and reasonable.

[0034] In this embodiment, the upper part of the second lamp cover 5 is formed with a first mounting ring groove 25 and a second mounting ring groove 26, which are disposed below the second fixing ring block 24. The upper end of the bottom shell 20 is formed with a third mounting ring groove 27. The first mounting ring groove 25 cooperates with the first sealing ring 6, the second mounting ring groove 26 cooperates with the second sealing ring 7, and the third mounting ring groove 27 cooperates with the third sealing ring 22. By setting the first mounting ring groove 25, the second mounting ring groove 26, and the third mounting ring groove 27, the positions of the first sealing ring 6, the second sealing ring 7, and the third sealing ring 22 are effectively defined, ensuring the reliability of the seal.

[0035] In this embodiment, an external thread 28 is formed on the upper outer peripheral wall of the bottom shell 20, and an internal thread 29 is formed on the inner peripheral wall of the cover shell 21. The internal thread 29 and the external thread 28 cooperate with each other, and the bottom shell 20 and the cover shell 21 are fixed by the cooperation of the external thread 28 and the internal thread 29. The installation and disassembly are also convenient, and the structural design is reasonable.

[0036] In this embodiment, the upper inner diameter of the placement cavity is larger than the lower inner diameter of the placement cavity, and the upper diameter of the second lamp cover 5 is larger than the lower diameter of the second lamp cover 5. The placement cavity and the second lamp cover 5 have a reasonable structural design, which facilitates the processing and formation of the explosion-proof joint surface 9.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An explosion-proof and corrosion-resistant indicator light, comprising a lamp holder (1) and a lamp cap, wherein the lamp cap covers the lamp tube (2) of the lamp holder (1), an explosion-proof sealing structure is provided between the lamp cap and the panel, and the lamp cap and the lamp holder (1) are detachably connected and fitted, characterized in that: The lamp cap includes a cap body (3), a first lamp cover (4), a second lamp cover (5), a first sealing ring (6), and a second sealing ring (7). The cap body (3) has a cavity (8) that extends through both ends, and the upper end of the cavity (8) is a placement cavity with a large inner diameter. The first lamp cover (4) is made of light-concentrating material and is placed inside the placement cavity. The second lamp cover (5) is outside the first lamp cover (4) and is detachably fixed inside the placement cavity. The second lamp cover (5) also forms a fixation for the first lamp cover (4). The first sealing ring (6) and the second sealing ring (7) are spaced vertically between the upper part of the second lamp cover (5) and the upper part of the placement cavity. An explosion-proof joint surface (9) is also formed between the lower part of the second lamp cover (5) and the lower part of the placement cavity.

2. The explosion-proof and corrosion-resistant indicator light according to claim 1, characterized in that: The indicator light also includes a lamp cap fixing base (10) with a mounting through hole (11). The lower end of the lamp cap is installed in the mounting through hole (11). The lamp cap fixing base (10) is also provided with a locking block (12) on the left and right sides. The lamp holder (1) is provided with a flexible locking plate (13) and a flexible support plate (14) on the left and right sides. The locking plate (13) is provided with a corresponding locking groove (15) on its inner side. The locking block (12) cooperates with the locking groove (15). The support plate (14) is located inside the locking plate (13) and forms a support for the lamp cap fixing base (10).

3. The explosion-proof and corrosion-resistant indicator light according to claim 2, characterized in that: A locking ring groove (16) is formed on the lower outer wall of the lamp cap. The lamp cap fixing seat (10) forms a threaded protrusion (17) and an elastic snap-fit ​​part (18) at the mounting through hole (11). A fixing screw (19) is installed in the threaded protrusion (17). The fixing screw (19), the snap-fit ​​part (18) and the locking ring groove (16) cooperate with each other.

4. The explosion-proof and corrosion-resistant indicator light according to claim 1, characterized in that: The main body (3) of the cap includes a bottom shell (20) and a cover shell (21). The cover shell (21) is detachably fixed to the upper end of the bottom shell (20). The cover shell (21) forms a fixation on the second lampshade shell (5). The lamp cap also includes a third sealing ring (22). The third sealing ring (22) is disposed between the upper end of the bottom shell (20) and the cover shell (21). The first sealing ring (6) is disposed opposite to the cover shell (21), and the second sealing ring (7) is disposed opposite to the bottom shell (20).

5. The explosion-proof and corrosion-resistant indicator light according to claim 4, characterized in that: The placement cavity is provided with a first fixing ring block (23) at the top of the cover (21), and a second fixing ring block (24) is provided at the top of the upper part of the second lampshade shell (5). The first fixing ring block (23) and the second fixing ring block (24) cooperate to fix the cover (21) to the second lampshade shell (5).

6. The explosion-proof and corrosion-resistant indicator light according to claim 5, characterized in that: The upper part of the second lamp cover (5) is formed with a first mounting ring groove (25) and a second mounting ring groove (26). The first mounting ring groove (25) and the second mounting ring groove (26) are arranged below the second fixing ring block (24). The upper end of the bottom shell (20) is formed with a third mounting ring groove (27). The first mounting ring groove (25) cooperates with the first sealing ring (6), the second mounting ring groove (26) cooperates with the second sealing ring (7), and the third mounting ring groove (27) cooperates with the third sealing ring (22).

7. The explosion-proof and corrosion-resistant indicator light according to claim 6, characterized in that: An external thread (28) is formed on the upper outer peripheral wall of the bottom shell (20), and an internal thread (29) is formed on the inner peripheral wall of the cover shell (21). The internal thread (29) cooperates with the external thread (28).

8. The explosion-proof and corrosion-resistant indicator light according to claim 1, characterized in that: The upper inner diameter of the placement cavity is larger than the lower inner diameter of the placement cavity, and the upper diameter of the second lampshade shell (5) is larger than the lower diameter of the second lampshade shell (5).

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