CN203394934U - Guide shaft for pneumatic actuator limit switch - Google Patents
Guide shaft for pneumatic actuator limit switch Download PDFInfo
- Publication number
- CN203394934U CN203394934U CN201320441895.3U CN201320441895U CN203394934U CN 203394934 U CN203394934 U CN 203394934U CN 201320441895 U CN201320441895 U CN 201320441895U CN 203394934 U CN203394934 U CN 203394934U
- Authority
- CN
- China
- Prior art keywords
- guide shaft
- limit switch
- pneumatic actuator
- actuator limit
- explosion
- 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 - Lifetime
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Abstract
The utility model discloses a guide shaft for a pneumatic actuator limit switch. The guide shaft is characterized by comprising a main body and a sealing washer, a groove is arranged at the upper end of the main body on the lower end of which a bump is disposed, and a seal ring is arranged on an annular groove disposed on the side wall of the main body. The guide shaft for the pneumatic actuator limit switch has the advantages that resistance to pressure is strong; when internal explosion happens, the higher the explosion point tightness of the sealing washer and a switch shell on the guide shaft is, the better the sealing performance is; self sealing is realized under pressure; class C explosion-proof requirements are met; internal explosion and absolute isolation from outside are ensured.
Description
Technical field
The utility model relates to the axis of guide that a kind of pneumatic actuator limit switch is used.
Background technique
Existing pneumatic actuator limit switch, need to have higher structural requirement for detonation situation, and most product is when inner deflagration phenomenon occurs, the authentication obtaining is only B level flame proof, and cannot reach C level flame proof standard.
Summary of the invention
The utility model is in order to solve above-mentioned deficiency, the axis of guide that provides a kind of pneumatic actuator limit switch to use.
Above-mentioned purpose of the present utility model realizes by following technological scheme: the axis of guide that a kind of pneumatic actuator limit switch is used, it is characterized in that: comprise body and seal washer, described body upper end is provided with groove, body lower end is provided with projection, described body sidewall is provided with circular groove, and circular groove is provided with seal ring.
Described body is crushed to by alloy powder.
The utility model advantage is compared with prior art: the crushing resistance of the axis of guide of the present utility model is strong, when occurring inner detonation, quick-fried some tightness of seal washer on the axis of guide and switch housing is higher, sealing is better, realization has pressure self-sealing, the requirement of explosion proof of C level flame proof be can meet, inner deflagration phenomenon and extraneous definitely completely cutting off guaranteed.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the axis of guide that a kind of pneumatic actuator limit switch is used, it is characterized in that: comprise body 1 and seal washer 2, described body 1 is crushed to by alloy powder, described body 1 upper end is provided with groove 3, body 1 lower end is provided with projection 4, and described body 1 sidewall is provided with circular groove 5, and circular groove 5 is provided with seal ring 6.
Finally it should be noted that: above-described embodiment is only for the utility model example is clearly described; and the not restriction to mode of execution; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here exhaustive without also giving all mode of executions, and the apparent variation of being amplified out thus or change are still among protection domain of the present utility model.
Claims (2)
1. the axis of guide that pneumatic actuator limit switch is used, is characterized in that: comprise body and seal washer, described body upper end is provided with groove, and body lower end is provided with projection, and described body sidewall is provided with circular groove, and circular groove is provided with seal ring.
2. the axis of guide that a kind of pneumatic actuator limit switch according to claim 1 is used, is characterized in that: described body is crushed to by alloy powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441895.3U CN203394934U (en) | 2013-07-24 | 2013-07-24 | Guide shaft for pneumatic actuator limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441895.3U CN203394934U (en) | 2013-07-24 | 2013-07-24 | Guide shaft for pneumatic actuator limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394934U true CN203394934U (en) | 2014-01-15 |
Family
ID=49906469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320441895.3U Expired - Lifetime CN203394934U (en) | 2013-07-24 | 2013-07-24 | Guide shaft for pneumatic actuator limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398048A (en) * | 2013-07-24 | 2013-11-20 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
-
2013
- 2013-07-24 CN CN201320441895.3U patent/CN203394934U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398048A (en) * | 2013-07-24 | 2013-11-20 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
| CN103398048B (en) * | 2013-07-24 | 2017-02-08 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |