CN2117650U - Vacuum switch - Google Patents
Vacuum switch Download PDFInfo
- Publication number
- CN2117650U CN2117650U CN 92210429 CN92210429U CN2117650U CN 2117650 U CN2117650 U CN 2117650U CN 92210429 CN92210429 CN 92210429 CN 92210429 U CN92210429 U CN 92210429U CN 2117650 U CN2117650 U CN 2117650U
- Authority
- CN
- China
- Prior art keywords
- vacuum switch
- sensingpiston
- vacuum
- switch
- housing
- 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.)
- Granted
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model provides a vacuum switch, comprising a housing, a sensor element, a pressure adjusting screw, a spring, a microswitch, etc. With the vacuum degree which is set, the sensor element is deformed, which drives an originating pin to lead the microswitch to run. After the stiffness of the spring is adjusted, the vacuum switch can be used as a pressure switch. The principle is as follows: a non electrical parameter is converted into an electric signal, and an object is controlled. The utility model has the advantages of high precision, long service life, safety, etc. The vacuum switch can be used in fields, such as machines, electronics, food, light industry, etc.
Description
The utility model relates to sensor field, particularly a kind of switching device that is used for vacuum degree detection or pneumatic actuator system pressure detecting.
Along with the raising of industrial automation level, the vacuum technique range of application more and more widely, vacuum switch is a kind of indispensable device that vacuum system detects.At present, in the prior art, domestic have only a kind of ZJ-2 type vacuum relay, belongs to the vacuum switching device of rough vacuum.It by housing, film close (sensing element), the fine setting screw rod (pressure regulating screw) form.This kind on-off action is to convert non-electrical quantity vacuum degree to the signal of telecommunication, by electric cabinet the signal of telecommunication is amplified, and controls and export to controlled device, with the automatic control that reaches load and the purpose of protection.The weak point of this switching device is to adopt metal bellows as sensing element, and measuring range is little, if the expanded scope precision will be very low, when operating pressure when 1-5 holds in the palm, relative error nearly 50%; Because the hard angle of bellows marginal existence, R is less for its fillet, exists stress to concentrate, and is easy to fatigue damage, and the life-span is low; Shell is as an electrode, installs at equipment and can not accomplish that insulation is good, and equipment is also dangerous.
In view of the deficiency that above-mentioned vacuum relay exists, the purpose of this utility model provides a kind of precision height, long, safe and reliable vacuum switch of life-span.
To achieve these goals, the utility model is realized in the following manner: it comprises housing, sensing element, pressure regulating screw, joint, the pin of posting a letter, sensingpiston, pressure spring, support, protective cover.Its structural feature is: sensing element adopts metal bellows and is located in the housing, on its blind end sensingpiston is set, its openend is connected with shell nozzle place joint, pressure regulating screw is located on the support, this support is arranged on case top, and between pressure regulating screw and sensingpiston, being provided with spring, sensingpiston is provided with the pin of posting a letter, and is provided with sensitive switch with this housing of posting a letter the pin relevant position.
The utility model is further described with by way of example below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation principal section figure.
Fig. 2 is the utility model structural representation end view.
Shown in Fig. 1,2; whole vacuum switch places in the protective cover (1); protective cover links to each other with housing (7); metal bellows (6) is located in the housing, and its openend and joint (2) the upper end vacuum chamber (not drawing among the figure) that makes bellows inner chamber and the measurand endoporus by joint that is tightly connected is connected.The bellows blind end contacts with sensingpiston (4), in the middle of making its contact steadily, also can add a flat board (5), pressure regulating screw (8) is located on the support (12) on the case top, pressure regulating screw acts on the pressure spring (10) by dull and stereotyped (9), sensingpiston is provided with the pin of posting a letter (3), establishes sensitive switch (11) on the outside and the pin relevant position of posting a letter.
During work, when the vacuum degree of system under test (SUT) reached setting, sensingpiston moved down under the effect of pressure spring, and drove the pin of posting a letter, and the normally opened contact of sensitive switch is connected, and sent the signal of telecommunication, so that the controlling object action.This switch can be used as pressure switch and uses after the rigidity of adjusting spring.At this moment metal bellows is in compressive state, and its inner chamber connects compressed air or other gas, after pressure reaches setting, bellows expansion drives on the sensingpiston and moves, and by the pin of posting a letter the normally-closed contact of sensitive switch is connected, send the signal of telecommunication, to reach the purpose of controlling object action.
Compared with the prior art the utility model has following advantage:
1. owing to adopted the comprehensive rigidity of spring and metal bellows to come and the vacuum balance, can make this switch all have higher precision on the gamut scope by the transposing spring rate, precision be 2 times of ZJ-2 type low-vacuum load-tripping device.
2. because the crooked corner of metal bellows all is circular shape, stress is concentrated little, and total deformation is to be born by several ripples, and therefore, the deformation force that each ripple bears is very little, so the life-span is long, is that ZJ-2 type relay life is more than 5 times.
3. owing to adopted the sensitive switch of standard to signal, safe and reliable, contact capacity can reach 250V5A, can be directly used in control circuit.
4. owing to behind replacing or the adjustment spring, can be used as pressure switch and use.Therefore can make two kinds of purposes of a device.This vacuum switch can be widely used in fields such as machinery, electronics, food, light industry.
Claims (3)
1, a kind of vacuum switch comprises that housing, sensing element, pressure regulating screw, sensing element are arranged in the housing, it is characterized in that sensing element adopts metal bellows, on its blind end sensingpiston is set, its openend is connected with the joint at shell nozzle place, pressure regulating screw is arranged on the support, and this support is arranged on case top, and is provided with spring between pressure regulating screw and sensingpiston, sensingpiston is provided with the pin of posting a letter, and is provided with sensitive switch with this housing of posting a letter the pin relevant position.
2,, it is characterized in that said vacuum switch places in the protective cover according to the described vacuum switch of claim 1.
3,, it is characterized in that being provided with between said sensingpiston and the bellows flat board according to claim 1 or 2 described vacuum switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92210429 CN2117650U (en) | 1992-03-17 | 1992-03-17 | Vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92210429 CN2117650U (en) | 1992-03-17 | 1992-03-17 | Vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117650U true CN2117650U (en) | 1992-09-30 |
Family
ID=4955550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92210429 Granted CN2117650U (en) | 1992-03-17 | 1992-03-17 | Vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117650U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436975C (en) * | 2006-11-17 | 2008-11-26 | 广东科龙电器股份有限公司 | Self-adapting type air conditioner capable of early-warning for high pressure, and control method |
| CN110974699A (en) * | 2020-01-17 | 2020-04-10 | 浙江厚达智能科技股份有限公司 | Single-end rotating type traditional Chinese medicine decocting barrel and single-end rotating type decocting method |
| CN111013451A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Multi-axis disturbance type traditional Chinese medicine decocting method of multi-axis disturbance type traditional Chinese medicine decocting barrel |
| CN111013449A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Multi-shaft disturbance type traditional Chinese medicine decocting barrel |
| CN111012669A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Steam recovery type traditional Chinese medicine decocting barrel and steam recovery type traditional Chinese medicine decocting method |
| CN111067796A (en) * | 2020-01-17 | 2020-04-28 | 浙江厚达智能科技股份有限公司 | Single-end rotary steam recovery type traditional Chinese medicine decocting barrel |
| CN111084721A (en) * | 2020-01-17 | 2020-05-01 | 浙江厚达智能科技股份有限公司 | Steam recovery type traditional Chinese medicine decocting barrel |
| CN111894736A (en) * | 2019-12-24 | 2020-11-06 | 中国航发长春控制科技有限公司 | High-temperature-resistant precise pneumatic pressure annunciator |
-
1992
- 1992-03-17 CN CN 92210429 patent/CN2117650U/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436975C (en) * | 2006-11-17 | 2008-11-26 | 广东科龙电器股份有限公司 | Self-adapting type air conditioner capable of early-warning for high pressure, and control method |
| CN111894736A (en) * | 2019-12-24 | 2020-11-06 | 中国航发长春控制科技有限公司 | High-temperature-resistant precise pneumatic pressure annunciator |
| CN110974699A (en) * | 2020-01-17 | 2020-04-10 | 浙江厚达智能科技股份有限公司 | Single-end rotating type traditional Chinese medicine decocting barrel and single-end rotating type decocting method |
| CN111013451A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Multi-axis disturbance type traditional Chinese medicine decocting method of multi-axis disturbance type traditional Chinese medicine decocting barrel |
| CN111013449A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Multi-shaft disturbance type traditional Chinese medicine decocting barrel |
| CN111012669A (en) * | 2020-01-17 | 2020-04-17 | 浙江厚达智能科技股份有限公司 | Steam recovery type traditional Chinese medicine decocting barrel and steam recovery type traditional Chinese medicine decocting method |
| CN111067796A (en) * | 2020-01-17 | 2020-04-28 | 浙江厚达智能科技股份有限公司 | Single-end rotary steam recovery type traditional Chinese medicine decocting barrel |
| CN111084721A (en) * | 2020-01-17 | 2020-05-01 | 浙江厚达智能科技股份有限公司 | Steam recovery type traditional Chinese medicine decocting barrel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2117650U (en) | Vacuum switch | |
| CN211578636U (en) | Vacuum circuit breaker and circuit breaker working state monitoring system thereof | |
| CN208369017U (en) | A kind of outdoor T-type distribution box | |
| CN108305814B (en) | Pressure signal device capable of bearing ultrahigh overload for long time | |
| CN1631600A (en) | Welding machine head with pressure sensor | |
| CN216928411U (en) | Contactor with signal leading-out terminal | |
| CN207261252U (en) | A kind of FSEDT series electronics time-delay differential pressure controller | |
| CN2195735Y (en) | Safety device of liquid electric-heating device using form memory alloy | |
| CN2137001Y (en) | Electric-controlling valve type pressure regulator | |
| CN211265349U (en) | Water heater wind pressure detection device of digital output | |
| CN218730649U (en) | Pressure switch joint assembly and pressure switch | |
| CN2418571Y (en) | Multi-way converting control switch | |
| CN115610545B (en) | Foot structure of wall climbing robot | |
| CN221448843U (en) | Safety protection device of PLC control cabinet | |
| CN2101936U (en) | Miniature pressure relay | |
| CN215544053U (en) | Contact type electric cylinder pressure point device | |
| CN218939530U (en) | Low-temperature-resistant plug-in temperature controller | |
| CN211348545U (en) | Automatic detection device for dynamic fling-cut switch | |
| CN215911364U (en) | FP74E pressure difference controller | |
| CN218331867U (en) | Press-down adjustment testing component for switch contact gap setting device | |
| CN217921210U (en) | Non-contact electronic lifting capacity limiter | |
| CN210722873U (en) | P45 high durability pressure controller | |
| CN216288179U (en) | Pressure switch | |
| CN211641906U (en) | Battery changing mobile device | |
| CN208738137U (en) | A kind of room temperature does not automatically reset temperature protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |