Explosion-proof balanced switch
By designing a removable explosion-proof housing and protective support in the equalization switch, the flame retardant effect of expanded flame-retardant powder and paraffin blocks is solved, and the problems of easy damage to the balanced switch and short-circuit spontaneous combustion of electrical components are achieved, achieving higher explosion-proof and safety.
Patent Information
- Application Number
- CN202421304105.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-07
AI Technical Summary
After the balance switch is impacted, the internal precision electronic devices are easily damaged, and short circuits of electrical components may cause fire to spread, so it is difficult for the prior art to effectively prevent such accidents.
An explosion-proof balanced switch is designed, adopting a removable switch housing and protective support. The inner lining is equipped with flameproof components, including expansion flame retardant powder and paraffin blocks. The protective support is protected by spring deformation and a protective angle is provided at the side edges of the outer shell to reduce impact.
Through the flame retardant treatment of the flame-proof components and the structural design of the protective support, the short circuit of the electrical components is effectively prevented from being spontaneously ignited, and provides protection when impacted, significantly improving the explosion-proof performance of the balanced switch.
Smart Images
Figure CN222763901U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switches, in particular to an explosion-proof balanced switch. Background Art
[0002] Balance switch is a device for expanding the network, which can provide more connection ports for the sub-network, so as to connect more computers. With the development of the communication industry and the advancement of the national economic informatization, the network switch market is showing a steady upward trend. Balance switch is a type of electrical equipment used in places where there are explosive gases and steam.
[0003] However, after the balanced switch is hit, the switch equipment with a high density of precision electronic devices inside can cause internal circuit damage with a slight deformation of the shell, and the electrical components in the switch will short-circuit and spontaneously ignite. If flame retardant treatment is not carried out in time, the fire in the balanced switch may spread. Therefore, we propose an explosion-proof balanced switch. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an explosion-proof balanced switch, which solves the problems mentioned in the above background.
[0005] The utility model provides the following technical solution: The utility model discloses an explosion-proof balanced switch, including a switch bottom plate and a switch shell detachably arranged on the switch bottom plate, the switch shell including an outer shell and an inner lining shell, a flameproof component is arranged in the inner lining shell, a protective support is detachably arranged above the switch bottom plate, a PCB circuit board is detachably arranged on the protective support, switch components are arranged on the PCB circuit board, a plug-in slot is opened in the front of the switch shell, a buffer layer is arranged on the inner side of the plug-in slot, a plug-in board is arranged on the inner side of the buffer layer, and the plug-in board is electrically connected to the switch components.
[0006] As a preferred embodiment, the flame retardant component includes a cavity in the side wall of the lining shell, the cavity is filled with expanding flame retardant powder, and grooves are respectively provided on the left and right sides of the lining shell, the grooves are connected to the cavity, and a paraffin block is embedded in the grooves, and the thickness of the paraffin block is 3CM.
[0007] As a preferred solution, the protective support includes a support plate arranged on the bottom plate of the switch, a lower slot shell is arranged on the support plate, an upper support is slidably connected in the lower slot shell, a plurality of springs are evenly arranged in the lower slot shell, and the upper ends of the plurality of springs are connected to the upper support.
[0008] As a preferred solution, a plurality of supporting feet are arranged above the upper support, the plurality of supporting feet are distributed in a matrix, and the PCB circuit board is arranged on the plurality of supporting feet.
[0009] As a preferred solution, the side edges of the outer shell are rounded, and protective corners are provided at the side edges of the outer shell.
[0010] As a preferred solution, a heat dissipation slot is provided on the rear side of the switch housing, and a dustproof screen is provided on the heat dissipation slot.
[0011] As a preferred solution, the outer surface of the outer shell is coated with a protective layer.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The utility model uses the structural setting of the flame-proof component to promptly perform flame-retardant treatment on short-circuit and spontaneous combustion of electrical components, thereby improving the explosion-proofness of the balanced switch; when the switch components in the switch are overloaded or short-circuited, the paraffin blocks in the slot body are melted by heat, the slot body is opened, and the open flame of the switch components causes the expanding flame-retardant powder to expand. At this time, the expanding flame-retardant powder fills the switch housing to prevent fire, and the air in the switch housing is discharged through the heat dissipation slot, thereby improving the explosion-proofness of the balanced switch.
[0014] Through the structural setting of the protective support, when the switch is impacted, the PCB circuit board arranged on the protective support is protected, and the upper support slides on the lower slot shell through the spring force deformation, so as to protect the switch components on the PCB circuit board. The side edges of the outer shell are rounded and protective corners are provided at the side edges of the outer shell to reduce the impact of the switch falling to the ground, thereby improving the explosion-proof performance of the switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;
[0016] Figure 2 It is a structural cross-sectional view of the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of the protective support and the PCB circuit board.
[0018] In the figure: 1. Switch base plate; 2. Outer shell; 3. Inner lining shell; 4. PCB circuit board; 5. Switch components; 6. Buffer layer; 7. Plug-in board; 8. Expanding flame retardant powder; 9. Paraffin block; 10. Support plate; 11. Lower trough shell; 12. Upper support; 13. Spring; 14. Support foot; 15. Protective corner; 16. Dustproof mesh plate. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-3 An explosion-proof balanced switch of the present embodiment comprises a switch bottom plate 1 and a switch housing detachably arranged on the switch bottom plate 1, the switch housing comprising an outer housing 2 and an inner lining housing 3, the outer housing 2 is made of steel, so that the protection of the balanced switch is improved, the inner lining housing 3 is made of polyethylene, so that the flame retardancy of the inner lining housing 3 is improved, a flame-proof component is arranged in the inner lining housing 3, and the flame-proof component performs flame retardant treatment on short-circuit spontaneous combustion of electrical components in time, thereby improving the explosion-proof property of the balanced switch, a protective support is detachably arranged above the switch bottom plate 1, so as to reduce the impact on the electrical components in the switch housing after the switch is hit, thereby improving the explosion-proof property of the switch, a PCB circuit board 4 is detachably arranged on the protective support, and switch components 5 are arranged on the PCB circuit board 4, a plug-in slot is opened in front of the switch housing, a buffer layer 6 is arranged on the inner side of the plug-in slot, a plug-in board 7 is arranged on the inner side of the buffer layer 6, and the plug-in board 7 is electrically connected to the switch components 5.
[0021] like Figure 2 As shown, the flame-proof component includes a cavity opened in the side wall of the inner lining shell 3, the cavity is filled with expanding flame-retardant powder 8, and grooves are opened on the left and right sides of the inner lining shell 3 respectively, the grooves are connected to the cavity, and a paraffin block 9 is embedded in the grooves. The thickness of the paraffin block 9 is 3CM. The expanding flame-retardant powder 8 is made of natural graphite flakes that are intercalated, washed, and dried. When exposed to high temperatures, it can instantly expand in volume, changing from flake to worm shape, so that the structure is loose. When the switch components 5 in the switch are overloaded or short-circuited, the paraffin blocks 9 in the grooves are melted by heat, and the grooves are opened. The open flame of the switch components 5 causes the expanding flame-retardant powder 8 to expand. At this time, the expanding flame-retardant powder 8 fills the switch housing to prevent fire, and discharges the air in the switch housing through the heat dissipation groove, thereby improving the explosion-proof performance of the balanced switch.
[0022] like Figure 2 , 3 As shown, the protective support includes a support plate 10 arranged on the switch base plate 1, a lower slot shell 11 is arranged on the support plate 10, an upper support 12 is slidably connected in the lower slot shell 11, a plurality of springs 13 are evenly arranged in the lower slot shell 11, and the upper ends of the plurality of springs 13 are connected to the upper support 12. When the switch is impacted, the PCB circuit board 4 arranged on the protective support is protected.
[0023] like Figure 2 , 3 As shown, a plurality of legs 14 are arranged above the upper support 12, and the plurality of legs 14 are distributed in a matrix manner. The PCB circuit board 4 is arranged on the plurality of legs 14, and the PCB circuit board 4 is supported on the legs 14 to facilitate air circulation near the PCB circuit board 4, thereby dissipating heat for the switch components 5 on the PCB circuit board 4.
[0024] like Figure 1 , 2 As shown, the side edges of the outer shell 2 are rounded, and protective corners 15 are provided at the side edges of the outer shell 2. The material of the protective corners 15 is nitrile rubber, so that the protective corners 15 have good wear resistance. By rounding the side edges of the outer shell 2 and providing protective corners 15 at the side edges of the outer shell 2, the impact of the switch falling to the ground is reduced, thereby improving the explosion-proof performance of the switch.
[0025] like Figure 2 As shown, a heat dissipation slot is provided on the rear side of the switch housing to discharge the heat generated by the switch components 5, and a dustproof mesh plate 16 is provided on the heat dissipation slot to prevent external dust from entering the switch housing.
[0026] like Figure 1 As shown, the outer surface of the outer shell 2 is coated with a protective layer to increase the service life of the outer shell 2.
[0027] During the specific implementation of this embodiment, the flame retardant treatment is carried out in time for the short-circuit and spontaneous combustion of the electrical components through the structural setting of the flame-proof assembly, thereby improving the explosion-proof property of the balanced switch. When the switch components 5 in the switch are overloaded or short-circuited, the paraffin block 9 in the slot body is melted by heat, and the slot body is opened. The open flame of the switch components 5 causes the expanding flame retardant powder 8 to expand. At this time, the expanding flame retardant powder 8 fills the switch housing to prevent fire, and discharges the air in the switch housing through the heat dissipation slot, thereby improving the explosion-proof property of the balanced switch. Through the structural setting of the protective support, when the switch is impacted, the PCB circuit board 4 arranged on the protective support is protected, and the spring 13 is deformed by force, so that the upper support 12 slides on the lower slot shell 11 to protect the switch components 5 on the PCB circuit board 4. The side edges of the outer shell 2 are rounded, and protective corners 15 are provided at the side edges of the outer shell 2 to reduce the impact of the switch falling to the ground, thereby improving the explosion-proof property of the switch.
[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An explosion-proof balancing switch, comprising a switch base plate (1) and a switch housing detachably arranged on the switch base plate (1), characterized in that: The switch housing comprises an outer housing (2) and an inner lining housing (3), a flameproof component is arranged in the inner lining housing (3), a protective support is detachably arranged above the switch bottom plate (1), a PCB circuit board (4) is detachably arranged on the protective support, switch components (5) are arranged on the PCB circuit board (4), a plug-in slot is opened at the front of the switch housing, a buffer layer (6) is arranged on the inner side of the plug-in slot, a plug-in board (7) is arranged on the inner side of the buffer layer (6), and the plug-in board (7) is electrically connected to the switch components (5).
2. The explosion-proof balancing switch according to claim 1, characterized in that: The flame retardant assembly comprises a cavity in the side wall of the lining shell (3), the cavity is filled with expanding flame retardant powder (8), the left and right sides of the lining shell (3) are respectively provided with grooves, the grooves are connected to the cavity, a paraffin block (9) is embedded in the grooves, and the thickness of the paraffin block (9) is 3 cm.
3. The explosion-proof balancing switch according to claim 1, characterized in that: The protective support comprises a support plate (10) arranged on the switch base plate (1), a lower slot shell (11) being arranged on the support plate (10), an upper support (12) being slidably connected in the lower slot shell (11), a plurality of springs (13) being evenly arranged in the lower slot shell (11), and the upper ends of the plurality of springs (13) being connected to the upper support (12).
4. The explosion-proof balancing switch according to claim 3, characterized in that: A plurality of supporting feet (14) are arranged above the upper support (12), the plurality of supporting feet (14) are distributed in a matrix, and the PCB circuit board (4) is arranged on the plurality of supporting feet (14).
5. The explosion-proof balancing switch according to claim 1, characterized in that: The side edges of the outer shell (2) are rounded, and protective corners (15) are provided at the side edges of the outer shell (2).
6. The explosion-proof balancing switch according to claim 1, characterized in that: A heat dissipation slot is provided on the rear side of the switch housing, and a dustproof screen plate (16) is provided on the heat dissipation slot.
7. The explosion-proof balancing switch according to claim 1, characterized in that: The outer surface of the outer shell (2) is coated with a protective layer.