Anti-explosion and anti-corrosion circuit breaker

Abstract

An anti-explosion and anti-corrosion circuit breaker comprises an anti-corrosion outer shell, an anti-explosion outer shell fixed in the anti-corrosion outer shell and a circuit breaker fixed in the anti-explosion outer shell, the anti-corrosion outer shell comprises a first bottom shell and a first cover shell which are connected through a sealing and fixing structure, and the anti-explosion outer shell comprises a second bottom shell and a second cover shell. A first bonding joint face is formed at the matching position of the second bottom shell and the second cover shell, a wire inlet portion with a cable plug nut is arranged at the bottom of the second bottom shell, a second bonding joint face is formed at the matching position of the cable plug nut, the cable wire and the wire inlet portion, and the circuit breaker is further provided with a linkage mechanism with a rotating shaft in a matched mode. The rotating shaft is matched with an operating handle on the first cover shell and is installed on the second cover shell through a first connecting sleeve, and a first explosion-proof joint face and a first explosion-proof threaded joint face are formed at the matching positions of the first connecting sleeve and the rotating shaft and the matching positions of the first connecting sleeve and the second cover shell respectively. The explosion-proof and anti-corrosion cable has better explosion-proof and anti-corrosion functions, and is wider in application range and higher in safety in use.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof circuit breakers, in particular to an explosion-proof and corrosion-resistant circuit breaker used in an explosion-proof box. Background Art

[0002] Circuit breakers can be used to distribute electrical energy and protect power lines and motors. When they are seriously overloaded or short-circuited or undervoltage, they can automatically cut off the circuit. Their function is equivalent to the combination of fuse switches and overheating relays, and they have been widely used. Existing circuit breakers do not have explosion-proof and corrosion-proof functions. In actual use, if they are used in dangerous places, they need to be installed in a protection box before they can be used. The scope of use is limited, and they are extremely inconvenient to use, time-consuming and labor-intensive. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an explosion-proof and corrosion-resistant circuit breaker, which has explosion-proof and corrosion-resistant functions, so that the scope of use of the circuit breaker is wider and the safety during use is improved.

[0004] The utility model solves the technical problem by adopting a technical solution, which is an explosion-proof and corrosion-proof circuit breaker, comprising an anti-corrosion housing, an explosion-proof housing fixed in the anti-corrosion housing, and a circuit breaker fixed in the explosion-proof housing, wherein the anti-corrosion housing comprises a first bottom housing and a first cover housing, a cable introduction device is provided at the bottom of the first bottom housing, and a cable is introduced by the cable introduction device in a sealed manner to be connected to an internal wiring terminal, a sealing fixing structure is further provided between the first bottom housing and the first cover housing, a sealingly matched operating handle is installed on the first cover housing, the explosion-proof housing comprises a second bottom housing and a second cover housing, and the second bottom housing and the second cover housing are connected by a first screw The second bottom shell is connected and a first bonding joint surface is formed at the matching position. The bottom of the second bottom shell is also penetrated by a corresponding wire entry portion, and the cable conductor on the wiring terminal is inserted through the wire entry portion. The outer side of the wire entry portion is also connected to a cable plug nut, and the matching position of the cable plug nut, the cable conductor and the wire entry portion forms a second bonding joint surface. The circuit breaker is also equipped with a linkage mechanism with a rotating shaft, the rotating shaft cooperates with the operating handle and is installed on the second cover shell through a first connecting sleeve, and the matching positions of the first connecting sleeve, the rotating shaft and the second cover shell respectively form a first flameproof joint surface and a first flameproof threaded joint surface.

[0005] The advantages of adopting the above technical solution are as follows: by arranging a second bottom shell and a second cover shell connected by a first screw outside the circuit breaker, and arranging a first bonding joint surface at the connection and matching position of the second bottom shell and the second cover shell, by arranging a cable plug nut at the line inlet of the second bottom shell, and arranging a second bonding joint surface at the matching position of the cable plug nut, the cable conductor and the line inlet, by arranging a first connecting sleeve at the matching position of the rotating shaft and the second cover shell, and making the first connecting sleeve and the rotating shaft and the second cover shell respectively adopt the first flameproof joint surface and the first flameproof threaded joint surface to make the explosion-proof housing composed of the second bottom shell and the second cover shell The explosion-proof requirements of the explosion-proof type are met by arranging a first bottom shell and a first cover shell connected by a sealing fixing structure outside the explosion-proof housing, arranging a cable introduction device for sealingly introducing the cable at the bottom of the first bottom shell, and sealingly matching the operating handle on the first cover shell to match the rotating shaft on the second cover shell, so that the corrosion-resistant housing composed of the first bottom shell and the first cover shell can meet the corrosion-resistant requirements, and the wiring terminals matched with the cables and cable conductors are also arranged in the first bottom shell. Therefore, the explosion-proof and corrosion-resistant circuit breaker has better explosion-proof and corrosion-resistant functions, a wider range of use, and higher safety during use.

[0006] Furthermore, the circuit breaker is also equipped with an elastic pressing rod for leakage protection, and the pressing rod is installed on the second cover shell through a second connecting sleeve. The second connecting sleeve, the pressing rod and the second cover shell form a second flameproof joint surface and a second flameproof threaded joint surface respectively.

[0007] The advantages of adopting the above technical solution are as follows: by arranging an elastic pressing rod on the second cover shell, when a leak occurs in the circuit, the main circuit of the circuit breaker can be cut off by pressing the pressing rod, so that the use of the circuit breaker is more reasonable, and the pressing rod is installed on the second cover shell through the second connecting sleeve, and the second connecting sleeve, the pressing rod and the second cover shell form a second flameproof joint surface and a second flameproof threaded joint surface at the matching position, thereby ensuring the reliable explosion-proof performance of the explosion-proof housing composed of the second bottom shell and the second cover shell, and the structural design is reasonable.

[0008] Furthermore, a first annular edge is provided on the upper end surface of the second bottom shell, a first annular groove is provided on the lower end surface of the second cover shell, the first annular edge cooperates with the first annular groove and flow channels are formed on opposite surfaces, and a perfusion channel is also provided on the second bottom shell, and the perfusion channel and the first screw hole corresponding to the first screw are both connected to the flow channel.

[0009] The advantages of adopting the above technical solution are as follows: when the second bottom shell and the second cover shell are fixed by the cooperation of the first screw and the first screw hole, the colloid can be injected into the perfusion channel. Since the perfusion channel and the first screw hole are both connected to the flow channel, the colloid perfused from the perfusion channel will be gradually injected into the first screw hole along the flow channel. At the same time, the colloid will gradually fill the gap between the first ring edge and the first ring groove. After the perfusion is completed, the first bonding surface can be formed. The arrangement of the first ring edge and the first ring groove, and the arrangement of the flow channel on the first ring edge and the first ring groove make the bonding stronger, the explosion-proof effect of the explosion-proof housing is better, and the structural design is reasonable.

[0010] Furthermore, the sealing and fixing structure includes a second ring edge, a second ring groove, a sealing strip, a second screw, and a second screw hole, the second ring edge is formed on the upper end surface of the first bottom shell, the second ring groove is formed on the lower end surface of the first cover shell, the sealing strip is arranged in the second ring groove, the second screw and the second screw hole are arranged in a group and are located on the outside of the second ring edge and the second ring groove.

[0011] The advantages of adopting the above technical solution are as follows: when the first cover shell and the first bottom shell are fixed by the cooperation of the second screw and the second screw hole, the second ring edge will press the sealing strip tightly against the second ring groove, thereby forming a multi-layer protection between the first bottom shell and the first cover shell, and the second screw and the second screw hole are arranged on the outside of the second ring edge and the second ring groove, and the setting position is reasonable, so the anti-corrosion effect of the anti-corrosion shell is good.

[0012] Furthermore, the linkage mechanism includes a gear and a slide, the gear is arranged on the inner end of the rotating shaft, the slide is provided with a tooth opening meshing with the gear, and the slide is also provided with a connecting port of the switch handle of the circuit breaker.

[0013] The advantages of adopting the above technical solution are: the operator rotates the operating handle to drive the rotating shaft to rotate, thereby driving the gear to rotate, and through the cooperation between the gear and the tooth mouth, the slide is driven to slide, so that the slide corresponds to the switch handle on the circuit breaker to realize the on-off switching operation of the circuit breaker.

[0014] Furthermore, the connection port is provided with flaps on both sides of the switch handle corresponding to the side surface thereof, and the flaps are turned and extended outward.

[0015] The advantages of adopting the above technical solution are as follows: in this way, the contact area between the slide and the switch handle can be increased, so that the switch handle can be moved better and the switch handle can be effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 for Figure 2 A magnified view of the structure at A;

[0019] Figure 4 Another view of the internal structure of the utility model (excluding the anti-corrosion shell);

[0020] Figure 5 Another view of the internal structure of the utility model (excluding the anti-corrosion shell);

[0021] Figure 6 It is a schematic diagram of the partial structure of the explosion-proof housing of the utility model;

[0022] Figure 7 It is a schematic diagram of the coordinated structure of the linkage mechanism of the utility model.

[0023] In the figure: 1-corrosion-resistant housing, 2-explosion-proof housing, 3-circuit breaker, 4-first bottom shell, 5-first cover shell, 6-cable entry device, 7-connection terminal, 8-operating handle, 9-second bottom shell, 10-second cover shell, 11-first screw, 12-first bonding joint surface, 13-inlet part, 14-cable plug nut, 15-second bonding joint surface, 16-rotating shaft, 17-first connecting sleeve, 18-first explosion-proof joint surface, 19 -first explosion-proof threaded joint surface, 20-pressing rod, 21-second connecting sleeve, 22-second explosion-proof joint surface, 23-second explosion-proof threaded joint surface, 24-first ring edge, 25-first ring groove, 26-flow channel, 27-infusion channel, 28-second ring edge, 29-second ring groove, 30-sealing strip, 31-second screw, 32-second screw hole, 33-gear, 34-slide, 35-tooth mouth, 36-connecting port, 37-flap. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the embodiments of the utility model and / or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0025] See also Figures 1 to 7As shown, an explosion-proof and corrosion-proof circuit breaker includes an anti-corrosion housing 1, an explosion-proof housing 2 fixed in the anti-corrosion housing 1, and a circuit breaker 3 fixed in the explosion-proof housing 2. The anti-corrosion housing 1 includes a first bottom shell 4 and a first cover shell 5. A cable introduction device 6 is provided at the bottom of the first bottom shell 4. The cable is introduced by the cable introduction device 6 to be connected to the internal wiring terminal 7. A sealing fixing structure is also provided between the first bottom shell 4 and the first cover shell 5. A sealing and matching operating handle 8 is installed on the first cover shell 5. The explosion-proof housing 2 includes a second bottom shell 9 and a second cover shell 10. The second bottom shell 9 and the second cover shell 10 are connected by a first screw 11 and a first bonding joint surface 12 is formed at the matching position. It should be noted that the first bonding joint surface 12 is formed by pouring The second bottom shell 9 is formed by a colloid, and a corresponding line inlet 13 is also penetrated through the bottom of the second bottom shell 9. The cable conductor on the terminal 7 is inserted into the line inlet 13 to be connected to the circuit breaker 3. A cable plug nut 14 is also connected to the outside of the line inlet 13, and a second bonding joint surface 15 is formed at the matching position of the cable plug nut 14, the cable conductor and the line inlet 13. The second bonding joint surface 15 is also formed by pouring colloid. The circuit breaker 3 is also equipped with a linkage mechanism with a rotating shaft 16. The rotating shaft 16 cooperates with the operating handle 8 and is installed on the second cover shell 10 through a first connecting sleeve 17. The matching positions of the first connecting sleeve 17, the rotating shaft 16 and the second cover shell 10 respectively form a first flameproof joint surface 18 and a first flameproof threaded joint surface 19.

[0026] In the above scheme, by arranging the second bottom shell 9 and the second cover shell 10 connected by the first screw 11 outside the circuit breaker 3, and arranging the first bonding joint surface 12 at the connection and matching place of the second bottom shell 9 and the second cover shell 10, by arranging the cable plug nut 14 at the wire inlet part 13 of the second bottom shell 9, and arranging the second bonding joint surface 15 at the matching place of the cable plug nut 14, the cable conductor and the wire inlet part 13, by arranging the first connecting sleeve 17 at the matching place of the rotating shaft 16 and the second cover shell 10, and making the first connecting sleeve 17 and the rotating shaft 16 and the second cover shell 10 respectively adopt the first flameproof joint surface 18 and the first flameproof threaded joint surface 19, so that the second bottom shell 9 and the second cover shell 10 are connected. The explosion-proof housing 2 constructed meets the explosion-proof requirements of the explosion-proof type. A first bottom shell 4 and a first cover shell 5 connected by a sealing fixed structure are arranged outside the explosion-proof housing 2, and a cable introduction device 6 for sealingly introducing the cable is arranged at the bottom of the first bottom shell 4, and an operating handle 8 is sealed and matched on the first cover shell 5 to cooperate with the rotating shaft 16 on the second cover shell 10. Therefore, the corrosion-proof housing 1 composed of the first bottom shell 4 and the first cover shell 5 can meet the corrosion-proof requirements, and the wiring terminals matched with the cables and cable conductors are also arranged in the first bottom shell 4. Therefore, the explosion-proof and corrosion-proof circuit breaker has better explosion-proof and corrosion-proof functions, the scope of use of the circuit breaker is wider, and the safety during use is also higher.

[0027] In this embodiment, the circuit breaker 3 is further provided with a resilient pressing rod 20 for leakage protection, the pressing rod 20 is installed on the second cover shell 10 through the second connecting sleeve 21, and the second connecting sleeve 21, the pressing rod 20 and the second cover shell 10 respectively form a second flameproof joint surface 22 and a second flameproof threaded joint surface 23. More specifically, a limiting hole is formed at a corresponding position of the second cover shell 10, and the bottom of the pressing rod 20 is installed on a spring against the inner wall of the limiting hole, and the spring can provide the pressing rod 20 with a spring. When a leak occurs in the circuit, the main circuit of the circuit breaker 3 can be cut off by pressing the pressing rod 20, so that the use of the circuit breaker 3 is more reasonable, and the pressing rod 20 is installed on the second cover shell 10 through the second connecting sleeve 21, and the second connecting sleeve 21, the pressing rod 20 and the second cover shell 10 respectively form a second flameproof joint surface 22 and a second flameproof threaded joint surface 23, thereby ensuring the reliable explosion-proof performance of the explosion-proof housing 2 composed of the second bottom shell 9 and the second cover shell 10, and the structural design is reasonable.

[0028] In this embodiment, the upper end surface of the second bottom shell 9 is provided with a first annular edge 24, and the lower end surface of the second cover shell 10 is provided with a first annular groove 25. The first annular edge 24 cooperates with the first annular groove 25 and a flow channel 26 is formed on the opposite surface. The second bottom shell 8 is also provided with a perfusion channel 27, and the perfusion channel 27 and the first screw hole corresponding to the first screw 11 are connected to the flow channel 26. It should be noted that the first screw hole extends from the second bottom shell 9 side to the second cover shell 10, and the first screw hole and the first screw 11 are arranged relative to the outside of the flow channel 26. When the second bottom shell 9 and the second cover shell 10 are fixed by the cooperation of the first screw 11 and the first screw hole After that, the colloid can be injected into the perfusion channel 27. Since the perfusion channel 27 and the first screw hole are both connected to the flow channel 26, the colloid perfused by the perfusion channel 27 will be gradually injected into the first screw hole along the flow channel. At the same time, the colloid will gradually fill the gap between the first ring edge 24 and the first ring groove 25. After the perfusion is completed, the first bonding surface 12 can be formed. The arrangement of the first ring edge 24 and the first ring groove 25, and the arrangement of the flow channel 26 on the first ring edge 24 and the first ring groove 25 make the bonding stronger. At the same time, the colloid can also be perfused at the bottom of the first screw 11. The explosion-proof effect of the explosion-proof housing 2 of this structure is better, and the structural design is reasonable.

[0029] In this embodiment, the sealing fixing structure includes a second annular edge 28, a second annular groove 29, a sealing strip 30, a second screw 31, and a second screw hole 32. The second annular edge 28 is formed on the upper end surface of the first bottom shell 4, and the second annular groove 20 is formed on the lower end surface of the first cover shell 5. The sealing strip 30 is arranged in the second annular groove 29. When the first cover shell 5 and the first bottom shell 4 are fixed by the cooperation of the second screw 31 and the second screw hole 32, the second annular edge 28 will press the sealing strip 30 against the second annular groove 29, thereby forming a multi-layer protection between the first bottom shell 4 and the first cover shell 5. Since the pressing rod 20 is only matched with the second cover shell 10, the second screw 31 and the second screw hole 32 here are only threadedly connected. That is to say, when operation is required, the anti-corrosion shell 1 can be disassembled, and the second screw 31 and the second screw hole 32 are arranged in a group and are located on the outside of the second annular edge 28 and the second annular groove 29. The setting position is reasonable, so the anti-corrosion effect of the anti-corrosion shell 1 is good.

[0030] In this embodiment, the linkage mechanism includes a gear 33 and a slide 34. The gear 33 is arranged on the inner end of the rotating shaft 16. The slide 34 is slidably connected to the inner wall surface of the second cover shell 10 and is provided with a toothed opening 35 meshing with the gear 33. The slide 34 is also provided with a connecting port 36 of the switch handle of the circuit breaker 3. The operator rotates the operating handle 8 to drive the rotating shaft 16 to rotate, thereby driving the gear 33 to rotate. The gear 33 cooperates with the toothed opening 35 to drive the slide 34 to slide, so that the slide 34 corresponds to the toggle switch handle on the circuit breaker 3 to realize the on-off switching operation of the circuit breaker.

[0031] In this embodiment, the slide 34 includes a concave plate and flanges forming both sides of the concave plate. A mounting plate is threadedly fixed at a corresponding position on the inner wall of the second cover shell 10, and the slide 34 is mounted on the mounting plate through the flanges. After the mounting plate is fixed to the second cover shell 10, the slide is manually slid along the extension direction of the mounting plate through the flanges until the gear 33 is meshed with the tooth mouth 35.

[0032] In this embodiment, flaps 37 that are turned outward and extend outward are provided on both sides of the switch handle corresponding to the connection port 36, so that the contact area between the slider 35 and the switch handle can be increased, thereby not only making it easier to toggle the switch handle, but also effectively protecting the switch handle.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An explosion-proof and corrosion-resistant circuit breaker, characterized in that: The invention comprises a corrosion-resistant housing (1), an explosion-proof housing (2) fixed in the corrosion-resistant housing (1), and a circuit breaker (3) fixed in the explosion-proof housing (2); the corrosion-resistant housing (1) comprises a first bottom housing (4) and a first cover housing (5); a cable introduction device (6) is provided at the bottom of the first bottom housing (4); a cable is introduced into the bottom of the cable introduction device (6) in a sealed manner to be connected to an internal wiring terminal (7); a sealing fixing structure is also provided between the first bottom housing (4) and the first cover housing (5); a sealingly matched operating handle (8) is installed on the first cover housing (5); the explosion-proof housing (2) comprises a second bottom housing (9) and a second cover housing (10); the second bottom housing (9) and the second cover housing (10) are connected by a first screw (11) and a first bonding surface (12) is formed at the matching position. The bottom of the second bottom shell (9) is also penetrated by a corresponding wire entry portion (13), and the cable conductor on the wiring terminal (7) is inserted through the wire entry portion (13). The outer side of the wire entry portion (13) is also connected to a cable plug nut (14), and the cable plug nut (14), the cable conductor and the wire entry portion (13) form a second bonding joint surface (15). The circuit breaker (3) is also equipped with a linkage mechanism with a rotating shaft (16), the rotating shaft (16) is matched with the operating handle (8) and is installed on the second cover shell (10) through a first connecting sleeve (17), and the first connecting sleeve (17) and the rotating shaft (16) and the first cover shell (5) form a first flameproof joint surface (18) and a first flameproof threaded joint surface (19) at the matching position.

2. The explosion-proof and corrosion-proof circuit breaker according to claim 1, characterized in that: The circuit breaker (3) is also provided with a resilient pressing rod (20) for leakage protection, the pressing rod (20) being mounted on the second cover shell (10) via a second connecting sleeve (21), and the second connecting sleeve (21), the pressing rod (20) and the second cover shell (10) respectively forming a second flameproof joint surface (22) and a second flameproof threaded joint surface (23) at the joints between the second connecting sleeve (21), the pressing rod (20) and the second cover shell (10).

3. The explosion-proof and corrosion-proof circuit breaker according to claim 1, characterized in that: The upper end surface of the second bottom shell (9) is provided with a first annular edge (24), and the lower end surface of the second cover shell (10) is provided with a first annular groove (25). The first annular edge (24) cooperates with the first annular groove (25) and flow channels (26) are formed on the opposite surfaces. The second bottom shell (9) is also provided with a perfusion channel (27), and the perfusion channel (27) and the first screw hole corresponding to the first screw (11) are both connected to the flow channel (26).

4. The explosion-proof and corrosion-proof circuit breaker according to claim 1, characterized in that: The sealing fixing structure comprises a second annular edge (28), a second annular groove (29), a sealing strip (30), a second screw (31), and a second screw hole (32); the second annular edge (28) is formed on the upper end surface of the first bottom shell (4); the second annular groove (29) is formed on the lower end surface of the first cover shell (5); the sealing strip (30) is arranged in the second annular groove (29); the second screw (31) and the second screw hole (32) are arranged in a group and are located on the outer sides of the second annular edge (28) and the second annular groove (29).

5. The explosion-proof and corrosion-proof circuit breaker according to claim 1, characterized in that: The linkage mechanism comprises a gear (33) and a slide (34); the gear (33) is arranged on the inner end of the rotating shaft (16); the slide (34) is provided with a tooth opening (35) meshing with the gear (33); and the slide (34) is also provided with a connection port (36) of a switch handle of the circuit breaker (3).

6. The explosion-proof and corrosion-proof circuit breaker according to claim 5, characterized in that: The connection port (36) is provided with flaps (37) that are turned over and extended outwards on both sides of the switch handle.

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