CN220041641U - Explosion-proof electromagnetic safety lock switch for explosion hazard occasion - Google Patents
Explosion-proof electromagnetic safety lock switch for explosion hazard occasion Download PDFInfo
- Publication number
- CN220041641U CN220041641U CN202321359021.3U CN202321359021U CN220041641U CN 220041641 U CN220041641 U CN 220041641U CN 202321359021 U CN202321359021 U CN 202321359021U CN 220041641 U CN220041641 U CN 220041641U
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- China
- Prior art keywords
- explosion
- assembly
- switch
- shell
- cover
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- 238000004880 explosion Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 7
- 239000002360 explosive Substances 0.000 description 6
- 238000007689 inspection Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses an explosion-proof electromagnetic safety lock switch for explosion dangerous occasions, wherein a switch body comprises a shell, a shell cover, a movable contact point assembly, a fixed contact point and wiring screw assembly, an electromagnet and a pressure push rod, wherein the pressure push rod is arranged in the shell and is sequentially connected with the electromagnet and the movable contact point assembly; the operating head assembly comprises an operating head shell, a cam switch disc and a sliding block assembly, wherein the operating head shell is connected with the switch body; the cable screwing assembly is used for screwing the cable of the contact; the explosion-proof protection cover assembly comprises a back plate and a protection cover, the back plate and the protection cover completely cover the switch body assembly, and the switch body assembly is fixedly connected with the locknut assembly through screws. The utility model improves the explosion-proof performance level of the electromagnetic safety lock switch, accords with the standard used in explosion dangerous occasions, and meets the equipment in the explosion dangerous industry.
Description
Technical Field
The utility model relates to an explosion-proof electromagnetic safety lock switch for explosion dangerous occasions, which belongs to the field of electromagnetic switches.
Background
If the common electromagnetic safety lock switch does not meet the explosion-proof standard, the product is used in the occasion with possible explosion hazard, once explosive gas or dust enters the inside of the electromagnetic safety lock switch, the explosive gas or dust can be ignited by electric sparks in the inside of the electromagnetic safety lock switch, and then surrounding explosive gas or dust is detonated, so that a great safety accident is generated.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides an explosion-proof electromagnetic safety lock switch for explosion dangerous occasions, which improves the explosion-proof performance level of the electromagnetic safety lock switch, meets the use standard of the explosion dangerous occasions and meets a large amount of equipment in the explosion dangerous industry.
The technical scheme for achieving the purpose is as follows: an explosion-proof electromagnetic safety lock switch for explosion dangerous occasions comprises a switch body, an operating head assembly, a cable screwing assembly and an explosion-proof protection cover assembly;
the switch body comprises a shell, a shell cover, a movable contact point assembly, a fixed contact point and wiring screw assembly, an electromagnet and a pressure push rod, wherein the pressure push rod is arranged in the shell and is sequentially connected with the electromagnet and the movable contact point assembly;
the operating head assembly comprises an operating head shell, a cam switch disc support, a sliding block assembly and an operating piece fixing inserting piece, wherein a key inserting piece opening is formed in the operating head shell, the operating head shell is connected with the switch body through a group of operating piece fixing inserting pieces, the cam switch disc is arranged in the operating head shell through the cam switch disc support, and the cam switch disc is connected with the pressure push rod through the sliding block assembly;
when the key inserting piece is inserted, the cam switch disc is pushed by the key inserting piece and generates a rotating action, and when the key inserting piece rotates to a specific position, the cam switch disc pushes the pressure push rod to push the electromagnet and the movable contact point assembly connected with the electromagnet, so that the movable contact point assembly, the fixed contact point and the wiring screw assembly are electrically closed or opened; when the reverse operation is needed, the electromagnet is electrified, so that the automatic reset of the electromagnet is realized, the electric state between the movable contact point assembly, the fixed contact point and the wiring screw assembly is changed, and the cam switch disc is reversely rotated, so that the key inserting piece can be pulled out;
the cable screwing assembly comprises a cable screwing piece, an O-shaped sealing ring, a cable adjusting ring and a cable screwing cap, a cable screwing hole is formed in the surface of the shell cover, the cable screwing piece is arranged outside the cable screwing hole, the cable of the contact is screwed through the cable adjusting ring and the cable screwing cap, and the cable screwing hole is sealed through the O-shaped sealing ring;
the explosion-proof protection cover assembly comprises a back plate and a protection cover, the back plate and the protection cover completely cover the switch body assembly, and the switch body assembly is fixedly connected with the locknut assembly through screws.
Further, the surface of the switch body is provided with an emergency release knob assembly.
Further, the pressure push rod is wrapped by a sealing leather cup.
Further, a dustproof cover is arranged at the key inserting opening on the operating head shell.
Further, a sealing ring is arranged between the shell and the shell cover.
Further, a vibration damping pad is arranged between the protective cover and the shell cover.
Further, the protection cover is connected with the shell cover through a screw, the shell cover is connected with the shell through the screw, and the shell and the backboard are fixed at the installation position through the screw together.
The explosion-proof electromagnetic safety lock switch for explosion dangerous occasions greatly enhances the protection capability of the switch, can bear external impact, protects the switch body from the impact of external force, and ensures the integrity and the tightness of the switch body. The switch has the protection capability of IP65/IP67, and can be suitable for various use environments such as indoor and outdoor. The utility model has higher safety, and the switch component can be used in 2-region explosive gas and 22-region explosive dust environments, can be suitable for most fields with requirements on explosion prevention, and has strong applicability.
Drawings
FIG. 1 is an exploded view of an explosion-proof electromagnetic security lock switch for use in explosion hazard situations of the present utility model;
FIG. 2 is an exploded view of a switch body of an explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations of the present utility model;
fig. 3 is an exploded view of an operating head assembly of an explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations of the present utility model.
Detailed Description
In order to better understand the technical solution of the present utility model, the following detailed description is given by way of specific examples:
referring to fig. 1 to 3, an explosion-proof electromagnetic safety lock switch for explosion hazard situations of the present utility model includes a switch body 1, an operating head assembly 2, a cable tightening assembly and an explosion-proof protection cover assembly.
The switch body includes a housing 11, a housing cover 12, a movable contact assembly 13, a stationary contact and binding screw assembly 14, an electromagnet 15, and a pressure ram 16. A sealing ring 18 is arranged between the shell 11 and the shell cover 12, the shell cover adopts a mode of combining a buckle and a screw to realize the function of easy disassembly and assembly, and meanwhile, the reliable IP65/IP67 protection capability can be provided, and the sealing type has the structural condition of meeting two explosion-proof types of nR and tc. A pressure pushrod 16 is disposed within the housing and connects the electromagnet and the movable contact assembly in sequence. The pressure push rod is wrapped by the sealing leather cup 17, so that the protection capability of IP65/IP67 is realized. The surface of the switch body is provided with an emergency release knob assembly.
The operating head assembly comprises an operating head shell 21, a cam switch disc 22, a cam switch disc bracket 23, a sliding block assembly 24 and an operating piece fixing inserting piece 25. The operating head shell 21 is provided with a key insert opening, and the key insert opening is provided with a dust cover 26. The operating head shell 21 is connected with the switch body through a group of operating piece fixing inserting pieces 25, the cam switch disc 22 is arranged in the operating head shell 21 through a cam switch disc bracket 23, and the cam switch disc 22 is connected with the pressure push rod 16 through a sliding block assembly 24.
When the key inserting piece is inserted, the cam switch disc is pushed by the key inserting piece and generates a rotating action, and when the key inserting piece rotates to a specific position, the cam switch disc pushes the pressure push rod to push the electromagnet and the movable contact point assembly connected with the electromagnet, so that the movable contact point assembly, the fixed contact point and the wiring screw assembly are electrically closed or opened; when the reverse operation is needed, the electromagnet is electrified, so that the automatic reset of the electromagnet is realized, the electric state between the movable contact point assembly, the fixed contact point and the wiring screw assembly is changed, and the cam switch disc is reversely rotated, so that the key inserting sheet can be pulled out.
The cable screwing assembly is a product with explosion-proof qualification certification, and comprises a cable screwing piece 31, an O-shaped sealing ring, a cable adjusting ring and a cable screwing cap 32, wherein a cable screwing hole is formed in the surface of a shell cover, the cable screwing piece is arranged outside the cable screwing hole, the cable of a contact is screwed through the cable adjusting ring and the cable screwing cap, and the cable screwing hole is sealed through the O-shaped sealing ring, so that the protection capability of IP65/IP67 is realized.
The explosion-proof protection cover assembly comprises a back plate 41 and a protection cover 42, wherein the back plate and the protection cover completely cover the switch body assembly, and are fixedly connected through screws and locknut assemblies. A vibration damping pad is arranged between the protective cover and the shell cover. When receiving external force impact, safety cover and backplate can bear up to 7J's impact energy, avoid switch body and cap damage, cause explosive gas and dust to get into inside the switch, by the spark ignition and detonate surrounding gas and dust. And a vibration damping pad is arranged between the protective cover and the switch body shell cover, so that the functions of absorbing external force and buffering can be realized, impact energy is prevented from being directly transferred to the shell cover, and the possibility of damage of the shell/shell cover is further avoided. In the installation mode, the protection cover is connected with the shell cover through a screw, the shell cover is connected with the shell through a screw, and the shell and the backboard are fixed at the installation position through the screw together. In order to ensure that the explosion-proof electromagnetic safety lock switch has consistent explosion-proof capacity in the long-term use process, the electromagnetic safety lock switch needs to be opened regularly to check the firmness of internal wiring and check the integrity of a sealing ring, and the installation mode of the utility model can be adopted, the protection cover can be taken down by only disassembling two installation screws, and then the shell cover can be opened to perform internal inspection and maintenance by disassembling three fixing screws. The switch body is still fixed on the installation wall surface, the safety door frame or the bracket, so that the switch body is prevented from falling off or being reinstalled. After the inspection and maintenance are completed, the cover and the protective cover are installed in reverse order. The installation mode can greatly reduce the time of disassembly and reinstallation, and prevents potential safety risks and hidden dangers caused to the explosion-proof electromagnetic safety lock switch in the process.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the utility model, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the utility model as long as they fall within the true spirit of the utility model.
Claims (7)
1. An explosion-proof electromagnetic safety lock switch for explosion dangerous occasions comprises a switch body and an operating head assembly, and is characterized by further comprising a cable screwing assembly and an explosion-proof protection cover assembly;
the switch body comprises a shell, a shell cover, a movable contact point assembly, a fixed contact point and wiring screw assembly, an electromagnet and a pressure push rod, wherein the pressure push rod is arranged in the shell and is sequentially connected with the electromagnet and the movable contact point assembly;
the operating head assembly comprises an operating head shell, a cam switch disc support, a sliding block assembly and an operating piece fixing inserting piece, wherein a key inserting piece opening is formed in the operating head shell, the operating head shell is connected with the switch body through a group of operating piece fixing inserting pieces, the cam switch disc is arranged in the operating head shell through the cam switch disc support, and the cam switch disc is connected with the pressure push rod through the sliding block assembly;
when the key inserting piece is inserted, the cam switch disc is pushed by the key inserting piece and generates a rotating action, and when the key inserting piece rotates in place, the cam switch disc pushes the pressure push rod to push the electromagnet and the movable contact point assembly connected with the electromagnet, so that the movable contact point assembly, the fixed contact point and the wiring screw assembly are electrically closed or opened; when the reverse operation is needed, the electromagnet is electrified, so that the automatic reset of the electromagnet is realized, the electric state between the movable contact point assembly, the fixed contact point and the wiring screw assembly is changed, and the cam switch disc is reversely rotated, so that the key inserting piece can be pulled out;
the cable screwing assembly comprises a cable screwing piece, an O-shaped sealing ring, a cable adjusting ring and a cable screwing cap, a cable screwing hole is formed in the surface of the shell cover, the cable screwing piece is arranged outside the cable screwing hole, the cable of the contact is screwed through the cable adjusting ring and the cable screwing cap, and the cable screwing hole is sealed through the O-shaped sealing ring;
the explosion-proof protection cover assembly comprises a back plate and a protection cover, the back plate and the protection cover completely cover the switch body assembly, and the switch body assembly is fixedly connected with the locknut assembly through screws.
2. An explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations as set forth in claim 1, wherein said switch body has an emergency release knob assembly disposed on a surface thereof.
3. An explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations as set forth in claim 1, wherein the pressure ram is surrounded by a sealing cup.
4. An explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations as set forth in claim 1, wherein the key insert opening in the operator head housing is provided with a dust cap.
5. An explosion-proof electromagnetic safety lock switch for use in explosion-hazard situations as set forth in claim 1, wherein a seal is provided between the housing and the housing cover.
6. An explosion-proof electromagnetic safety lock switch for use in explosion-hazardous situations as set forth in claim 1, wherein a vibration-damping pad is provided between the protective cover and the housing cover.
7. An explosion-proof electromagnetic safety lock switch for use in an explosion-hazard situation according to claim 1, wherein the protective cover is connected to the housing cover by means of screws, the housing cover is connected to the housing by means of screws, and the housing and the back plate are co-fixed in the mounting position by means of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321359021.3U CN220041641U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof electromagnetic safety lock switch for explosion hazard occasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321359021.3U CN220041641U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof electromagnetic safety lock switch for explosion hazard occasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041641U true CN220041641U (en) | 2023-11-17 |
Family
ID=88744649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321359021.3U Active CN220041641U (en) | 2023-05-31 | 2023-05-31 | Explosion-proof electromagnetic safety lock switch for explosion hazard occasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041641U (en) |
-
2023
- 2023-05-31 CN CN202321359021.3U patent/CN220041641U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |