CN204029647U - A kind of flame-proof switch - Google Patents
A kind of flame-proof switch Download PDFInfo
- Publication number
- CN204029647U CN204029647U CN201420422414.9U CN201420422414U CN204029647U CN 204029647 U CN204029647 U CN 204029647U CN 201420422414 U CN201420422414 U CN 201420422414U CN 204029647 U CN204029647 U CN 204029647U
- Authority
- CN
- China
- Prior art keywords
- pipe
- case lid
- access duct
- outlet pipeline
- flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000000565 sealant Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model belongs to underground coal mine explosion-proof technology field, particularly relate to a kind of flame-proof switch, tank ends is provided with access duct and outlet pipeline, case lid bottom is connected with the main part of switch with mechanical contact, it is characterized in that being provided with O-ring seal between casing and case lid, clamping screw is through O-ring seal, access duct, outlet pipe ends is respectively equipped with and compresses pipe, compress pipe internal diameter respectively with outlet pipeline, access duct matches, access duct, outlet pipeline both sides are provided with cannelure, the thickness of cannelure matches with the pipe thickness compressing pipe, compress pipe and access duct, outlet pipeline is fixedly connected with, compress inside pipe wall and be provided with sealing stiffening ring, case lid is provided with draw-in groove, draw-in groove is positioned near clamping screw.The beneficial effects of the utility model are: can seal between casing and case lid well, access duct and occur using novel sealing structure between pipeline and casing, and the sealing of whole flame-proof switch is improved greatly, and fail safe is high.
Description
Technical field
The utility model belongs to underground coal mine explosion-proof technology field, particularly relates to a kind of flame-proof switch.
Background technology
Because the comparision of production in colliery is special, for other a lot of industries produce, coal production is in very typical hazardous environment, and the life security of serious threat underground labour appears blast, in the impact that its electric equipment is very easy to be subject to various external environment condition in downhole production process.Mainly design one in coal production and electric equipment can be contained in the inside, thus be not subject to or be subject to rock pressure or other environmental impacts when electric equipment is run in down-hole, arc light or spark is easily produced during switching electrical equipment, the various injury accidents produced therefrom happen occasionally, especially this inflammable and explosive occasion in colliery, so flame-proof switch seems particularly important.
At present, the contactor used under inflammable and explosive environment is placed in the housing of sealing by daily regular tap, keep apart inner with extraneous flammable explosive gas, dust etc., thus reach explosion-proof effect, but also there is certain deficiency in current flame-proof switch, easily aging at incoming line, line outlet place caulking gum, push type button and gap, housing junction larger, if now there is damp in surrounding environment, damp touches electric spark in the enclosure and just easily causes sensitive switch blast to there is potential safety hazard.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of flame-proof switch, can seal between casing and case lid well, access duct and occur using novel sealing structure between pipeline and casing, the sealing of whole flame-proof switch is improved greatly, and fail safe is high.
To achieve these goals, the utility model adopts following technical scheme:
A kind of flame-proof switch, comprise casing, case lid, switch with mechanical contact, be fixedly connected with by clamping screw between described casing and described case lid, described tank ends is provided with access duct and outlet pipeline, described case lid bottom is connected with the main part of described switch with mechanical contact, main part and the control part of described switch with mechanical contact are in transmission connection, it is characterized in that being provided with O-ring seal between described casing and described case lid, described clamping screw is through described O-ring seal, described access duct, described outlet pipe ends is respectively equipped with and compresses pipe, the internal diameter of described compression pipe respectively with described outlet pipeline, described access duct matches, described access duct, described outlet pipeline both sides are provided with cannelure, the thickness of described cannelure and the pipe thickness of described compression pipe match, described compression pipe and described access duct, described outlet pipeline is fixedly connected with, described compression inside pipe wall is provided with sealing stiffening ring, described case lid is provided with draw-in groove, described draw-in groove is positioned near described clamping screw.
The shape of described draw-in groove is Ω type.
In described case lid, the outside of switch with mechanical contact main part is provided with sealant.
Described sealing stiffening ring is positioned near the mouth of pipe of described compression pipe.
The beneficial effects of the utility model are: can seal between casing and case lid well, access duct and occur using novel sealing structure between pipeline and casing, and the sealing of whole flame-proof switch is improved greatly, and fail safe is high; Cannelure by tight seal between compression pipe and line pipeline, and is connected firmly, and further strengthens explosion-proof effect; Sealing stiffening ring can make electric wire and compress close contact between pipe, and prevent electric wire from leaking electricity and produce around spark initiation, safe effect is very good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, casing, 2, case lid, 3, switch with mechanical contact, 4, clamping screw, 5, access duct, 6, outlet pipeline, 7, main part, 8, control part, 9, O-ring seal, 10, cannelure, 11, sealing stiffening ring, 12, draw-in groove, 13, sealant, 14, compress pipe.
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the present utility model is explained.
As shown in Figure 1, the utility model provides a kind of flame-proof switch, comprise casing 1, case lid 2, switch with mechanical contact 3, connected by clamping screw 4 internal thread between casing 1 and case lid 2, casing 1 two ends are provided with access duct 5 and outlet pipeline 6, case lid 2 bottom is connected with the main part 7 of switch with mechanical contact 3, main part 7 and the control part 8 of switch with mechanical contact 3 are in transmission connection, in case lid 2, the outside of switch with mechanical contact 3 main part 7 is provided with sealant 13, by the inner sealing of case lid 2 with casing 1, O-ring seal 9 is provided with between casing 1 and case lid 2, clamping screw 4 is through O-ring seal 9, access duct 5, outlet pipeline 6 two ends are respectively equipped with and compress pipe 14, compress pipe 14 internal diameter respectively with outlet pipeline 6, access duct 5 matches, access duct 5, outlet pipeline 6 both sides are provided with cannelure 10, the thickness of cannelure 10 matches with the pipe thickness compressing pipe 14, compress pipe 14 and access duct 5, outlet pipeline 6 is fixedly connected with, compress pipe 14 inwall and be provided with sealing stiffening ring 11, sealing stiffening ring 11 is positioned near the mouth of pipe of compression pipe 14, the spark avoiding internal wire or switch keying to produce and extraneous contact cause blast, case lid 2 is provided with draw-in groove 12, draw-in groove 12 is positioned near clamping screw 4, the shape of draw-in groove 12 is that Ω type is more excellent, electric wire can be placed in draw-in groove 12 like this, make electric wire proper alignment, not in disorder.
Above an example of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (4)
1. a flame-proof switch, comprise casing, case lid, switch with mechanical contact, be fixedly connected with by clamping screw between described casing and described case lid, described tank ends is provided with access duct and outlet pipeline, described case lid bottom is connected with the main part of described switch with mechanical contact, it is characterized in that being provided with O-ring seal between described casing and described case lid, described clamping screw is through described O-ring seal, described access duct, described outlet pipe ends is respectively equipped with and compresses pipe, the internal diameter of described compression pipe respectively with described outlet pipeline, described access duct matches, described access duct, described outlet pipeline both sides are provided with cannelure, the thickness of described cannelure and the pipe thickness of described compression pipe match, described compression pipe and described access duct, described outlet pipeline is fixedly connected with, described compression inside pipe wall is provided with sealing stiffening ring, described case lid is provided with draw-in groove, described draw-in groove is positioned near described clamping screw.
2. a kind of flame-proof switch according to claim 1, is characterized in that the shape of described draw-in groove is Ω type.
3. a kind of flame-proof switch according to claim 1, is characterized in that the outside of described switch with mechanical contact main part is provided with sealant.
4. a kind of flame-proof switch according to claim 1, is characterized in that described sealing stiffening ring is positioned near the mouth of pipe of described compression pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422414.9U CN204029647U (en) | 2014-07-29 | 2014-07-29 | A kind of flame-proof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422414.9U CN204029647U (en) | 2014-07-29 | 2014-07-29 | A kind of flame-proof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029647U true CN204029647U (en) | 2014-12-17 |
Family
ID=52069482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420422414.9U Expired - Fee Related CN204029647U (en) | 2014-07-29 | 2014-07-29 | A kind of flame-proof switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204029647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802375A (en) * | 2019-03-14 | 2019-05-24 | 合肥格威特电气技术有限公司 | A kind of reinforced portable single phase alternating current power supply lightning protection box |
| CN111276353A (en) * | 2020-03-19 | 2020-06-12 | 柴宣何 | High-safety electrical switching equipment |
-
2014
- 2014-07-29 CN CN201420422414.9U patent/CN204029647U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802375A (en) * | 2019-03-14 | 2019-05-24 | 合肥格威特电气技术有限公司 | A kind of reinforced portable single phase alternating current power supply lightning protection box |
| CN111276353A (en) * | 2020-03-19 | 2020-06-12 | 柴宣何 | High-safety electrical switching equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160729 |