CN1909138A - Pressure switch - Google Patents
Pressure switch Download PDFInfo
- Publication number
- CN1909138A CN1909138A CN 200510088072 CN200510088072A CN1909138A CN 1909138 A CN1909138 A CN 1909138A CN 200510088072 CN200510088072 CN 200510088072 CN 200510088072 A CN200510088072 A CN 200510088072A CN 1909138 A CN1909138 A CN 1909138A
- Authority
- CN
- China
- Prior art keywords
- switch
- pressure
- pressure switch
- spring
- 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.)
- Pending
Links
Images
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The invention relates to a pressure switch used in over-pressure protection of family micro boiler steam generator, wherein it is formed by connector 1, sealing membrane 2, top rod 3, spring 4, frame 5, switch base 6, and micro switch 7; as picture 1, the connector 1 connects the pressure switch and the steam generator, as well as the mounting base of sealing membrane 2; the frame 5 mounts the membrane 2 and the top rod 3 inside the connector 1; the frame 5 mounts the switch base 6 after mounting the spring 4 and the pad 9, to form pressure sensor; the pressure volume is converted into the displacement of top rod 3, to push the trigger 10 of micro switch 7 mounted on the switch base 6; via adjusting the screw dept of switch base 6 in the frame 5, setting the operation point of pressure switch; then adhering the switch base 6 and the frame 5 with sealing rubber. Said invention uses rubber sealing membrane to replace the metal membrane, to realize lower cost and micro volume.
Description
Affiliated technical field:
The present invention relates to a kind of novel pressure switch; this pressure switch is mainly used in the overvoltage protection of the steam raising plant of domestic miniature boiler; when operating value that the pressure overpressure switch in the steam raising plant is set; the contact of pressure switch disconnects; cut off the power supply of the heating element of steam raising plant, play the effect of protection steam raising plant.
Background technology:
According to various use occasion, pressure switch has various corresponding structure and pattern, and some pressure switch also has other combination function, but structure with regard to simple pressure switch, can be divided into the parts of experiencing pressure and the parts of switch motion, as concrete product, also need accessories such as shell, seal member, adjusting parts.The pressure switch that is used for the domestic miniature boiler steam raising plant, its operating pressure 0.3-0.4MPa, construction of switch also is like this, in the prior art, the parts of experiencing pressure all adopt metallic elastic component, and as bellows, diaphragm etc., these metallic elastic components produce corresponding strain according to different pressures, when deflection reached set point, the pull switch action component was realized the disengagement of its switch contact or is closed; The switch motion parts comprise push rod, recovery spring and the switching mechanism of transfer elastic deformed element amount, and the pressure switch of some pattern adopts the sensitive switch of typing as switching mechanism.
The pressure switch that is used for the domestic miniature boiler steam raising plant is very important control element, thus very high to the requirement of bellows, diaphragm, generally adopting precious metals such as beryllium-bronze, stainless steel, processing request is also very high, causes the cost of pressure switch higher.For metal bellows or diaphragm, the linear zone of pressure distortion is very narrow, and deflection is also less, and the properties of product consistency is poor, and debugging is also difficult, need select larger-diameter bellows or diaphragm for use in the practicality, so the size of pressure switch is also bigger.
Summary of the invention:
For simplified structure, reduce size, realize the gamut linear deformation, obtain enough deflections, save bellows or diaphragm, the present invention proposes a kind of novel pressure switch, promptly adopt elastomeric material as seal membrane alternative metals diaphragm, and spring both had been used to recover the position of push rod, had the flexible member function of metallic membrane again concurrently.The switching mechanism of this pressure switch is selected the sensitive switch of typing for use.
In order to realize described purpose, pressure switch of the present invention mainly comprises joint 1, seal membrane 2, push rod 3, spring 4, housing 5, parts such as switch base 6 and sensitive switch 7, as shown in Figure 1, joint 1 is the connector of pressure switch and steam raising plant, also be the assembling matrix of seal membrane 2 simultaneously, with housing 5 seal membrane 2 and push rod 3 are assemblied in the joint 1, assembled switch seat 6 again behind assembling spring 4 and the pad 9 in the housing 5, just formed the assembly of experiencing pressure, the pressure size conversion becomes the displacement of push rod 3, is used to promote to be installed on the contact 10 of the sensitive switch 7 on the switch base 6.Seal membrane 2 among the present invention adopts high performance rubber, when joint 1 is connected operating pressure, seal membrane 2 produces distortion, and the elastic force that rubber deformation produces is very little, can ignore, the power that operating pressure produces almost all puts on push rod 3, the power that balances each other with this power is from the elastic force of 4 pairs of push rods 3 of spring, operating pressure at first overcomes the precompression of spring, along with the increase of operating pressure, the power that surpasses precompression makes push rod 3 produce displacement, and spring 4 produces compression, promote contact 10 actions of sensitive switch 7 up to push rod 3, thereby realize the effect of switch motion under certain operating pressure.When operating pressure reduced, spring 4 promoted push rod 3 and sets back, thereby sensitive switch is also resetted.
After the pressure switch assembling, initial pressure by the screw-in depth regulating spring of by-pass cock seat 6 in housing 5, the operating pressure value that makes push rod 3 produce displacement changes, thereby the operating pressure value of switch motion is changed, and realizes the effect of setting pressure switch motion point on request.Behind the setting pressure switch motion point, at the local location of the faying face of switch base 6 and housing 5 with fluid sealant bonding location, to prevent the variation of pressure switch operating point.
Do not make the contact 10 of sensitive switch 7 surpass range in order to make pressure switch can bear bigger pressure, the while does not make seal membrane 2 produce excessive distortion yet and damages, and the position of push rods 3 being installed at housing 5 is provided with limited step 11.
Because oil resistant, the acid-proof alkaline of rubber, this pressure switch can be applicable to the occasion that many other working temperatures are no more than 200 ℃, pressure set points is done also can select for use the spring 4 of different-stiffness to adapt to more use occasion the fine setting except the screw-in depth of by-pass cock seat 6 in housing 5.
The pressure switch that the present invention proposes can be advantageously applied to occasions such as domestic miniature boiler steam raising plant and other pressure vessel, and have the following advantages:
1. adopt rubber seal diaphragm alternative metals diaphragm, realized that the displacement of push rod and pressure are linear, and deflection is bigger, be convenient to product assembling and debugging.
2. save metallic membrane, reduce product cost.
3. the size of rubber seal diaphragm can be less, makes pressure switch realize miniaturization.
Description of drawings:
Fig. 1 is the structure chart of pressure switch.
Fig. 2 is the pressure switch construction figure when being unkitted sensitive switch.
Fig. 3 is the vertical view of pressure switch.
Fig. 4 is the pressure switch vertical view when being unkitted sensitive switch.
Fig. 5 is the upward view of pressure switch.
Among the figure, 1-joint, 2-seal membrane, the 3-push rod, 4-spring, 5-housing, the 6-switch base, 7-sensitive switch, 8-screw, the 9-pad, the contact of 10-sensitive switch, the limited step on the 11-housing, 12-is embedded in the nut on the switch base, spanner screens on the 13-housing, the spanner screens on the 14-joint, the external screw thread on the 15-joint.
Embodiment:
By structure shown in Figure 1, the seal membrane 2 of packing in joint 1, the push rod 3 of packing in housing 5 then screws in housing 5 in the internal thread of joint 1, and firmly tightens, and guarantees faying face ne-leakage under operating pressure of seal membrane 2 and joint 1.Cover upper spring 4 and pad 9 on push rod 3 screw in switch base 6 in the internal thread of housing 5 more then, with screw 8 sensitive switch 7 are contained on the switch base 6 again.With the pressure switch that special test platform debugging assembling is finished, adjust the screw-in depth of switch base 6 in housing 5, the switch motion force value of setting is met the requirements, at last with fluid sealant bonding location.
Install for convenient, on joint 1, processed spanner screens 14, on housing 5, processed spanner screens 13.
Embodiment: the pressure switch that is used for the domestic miniature boiler steam raising plant, general its switch motion force value of setting is 0.4MPa, the joint external screw thread is selected R1/8 for use, and seal membrane is selected circle for use, pressurized diameter 9mm, pressure 25.4N, the displacement 0.8mm of push rod during the configuration switch action, spring free length 9.5mm, assembling length 7.5mm, the rigidity 9.1N/mm of spring selects the sensitive switch of typing for use.
Claims (4)
1. pressure switch, comprise joint 1, seal membrane 2, push rod 3, spring 4, housing 5, switch base 6 and sensitive switch 7, it is characterized in that: seal membrane adopts elastomeric material, and the pressure switch main body is made up of joint 1, seal membrane 2, push rod 3, spring 4, housing 5, switch base 6 and sensitive switch 7.
2. pressure switch according to claim 1 is characterized in that: the elastic force of pressure switch when work seal membrane 2 can be ignored, and the effect of spring 4 existing recovery push rod positions has the flexible member function of metallic membrane again concurrently.
3. pressure switch according to claim 1, it is characterized in that: by the initial pressure of the screw-in depth regulating spring of by-pass cock seat 6 in housing 5, the operating pressure value that makes push rod 3 produce displacement changes, thereby the operating pressure value of switch motion is changed, realize the effect of setting pressure switch motion point on request.
4. pressure switch according to claim 3 is characterized in that: at the local location of the faying face of switch base 6 and housing 5 with fluid sealant bonding location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510088072 CN1909138A (en) | 2005-08-02 | 2005-08-02 | Pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510088072 CN1909138A (en) | 2005-08-02 | 2005-08-02 | Pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1909138A true CN1909138A (en) | 2007-02-07 |
Family
ID=37700193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510088072 Pending CN1909138A (en) | 2005-08-02 | 2005-08-02 | Pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1909138A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154534B (en) * | 2007-08-23 | 2010-10-06 | 宁波市海曙四方电子有限公司 | Automatic positioning imaging device |
| CN102709107A (en) * | 2012-05-17 | 2012-10-03 | 太仓奥科机械设备有限公司 | Pressure adjustable switch |
| CN103197701A (en) * | 2013-02-05 | 2013-07-10 | 太原市精微测控技术有限公司 | Pressure controller |
| CN103362830A (en) * | 2013-06-28 | 2013-10-23 | 苏州美达斯机电有限公司 | Pressure control device for submerged pump |
| CN106409601A (en) * | 2016-12-07 | 2017-02-15 | 象山科博仪表有限公司 | Micro pressure controller |
| CN107478307A (en) * | 2017-09-20 | 2017-12-15 | 重庆远望物流有限公司 | A kind of gravity sensor |
| CN108010797A (en) * | 2017-12-26 | 2018-05-08 | 苏州康姆普机械有限公司 | A kind of double-sensing pressure switch |
| CN114188181A (en) * | 2022-02-17 | 2022-03-15 | 成都凯天电子股份有限公司 | Height switch for aircraft wastewater system |
-
2005
- 2005-08-02 CN CN 200510088072 patent/CN1909138A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154534B (en) * | 2007-08-23 | 2010-10-06 | 宁波市海曙四方电子有限公司 | Automatic positioning imaging device |
| CN102709107A (en) * | 2012-05-17 | 2012-10-03 | 太仓奥科机械设备有限公司 | Pressure adjustable switch |
| CN103197701A (en) * | 2013-02-05 | 2013-07-10 | 太原市精微测控技术有限公司 | Pressure controller |
| CN103197701B (en) * | 2013-02-05 | 2015-11-25 | 太原市精微测控技术有限公司 | A kind of pressure controller |
| CN103362830A (en) * | 2013-06-28 | 2013-10-23 | 苏州美达斯机电有限公司 | Pressure control device for submerged pump |
| CN106409601A (en) * | 2016-12-07 | 2017-02-15 | 象山科博仪表有限公司 | Micro pressure controller |
| CN107478307A (en) * | 2017-09-20 | 2017-12-15 | 重庆远望物流有限公司 | A kind of gravity sensor |
| CN108010797A (en) * | 2017-12-26 | 2018-05-08 | 苏州康姆普机械有限公司 | A kind of double-sensing pressure switch |
| CN114188181A (en) * | 2022-02-17 | 2022-03-15 | 成都凯天电子股份有限公司 | Height switch for aircraft wastewater system |
| CN114188181B (en) * | 2022-02-17 | 2022-05-24 | 成都凯天电子股份有限公司 | Height switch for aircraft wastewater system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1909138A (en) | Pressure switch | |
| US7243900B2 (en) | Ball valve | |
| CN2886787Y (en) | Pressure switch | |
| CN205016455U (en) | Pressure relay | |
| CN214946648U (en) | Gas pressure reducer | |
| CN201363292Y (en) | Electronic pressure controller | |
| CN218241703U (en) | Plunger type pressure switch | |
| CN114188181B (en) | Height switch for aircraft wastewater system | |
| CN214618086U (en) | Electric actuator | |
| CN212838724U (en) | Hydraulic oil cylinder | |
| CN216714671U (en) | Real-time response air pump controller | |
| CN208906468U (en) | A kind of air clamper | |
| CN216212960U (en) | Single spring deformation triggering structure of micro differential pressure sensor | |
| CN113883313B (en) | Mechanical linkage pressure switch valve | |
| CN1492161A (en) | Self coupling electric rheological liquid damper without external power | |
| CN214304294U (en) | Pressure adjustable double-gear water pump controller | |
| CN202601506U (en) | Pressure controller | |
| CN218991850U (en) | Piston pump inner plug sealing improved structure | |
| CN219472865U (en) | Actuating mechanism of embedded valve body | |
| CN214741959U (en) | Double-acting air volume regulator for reciprocating compressor | |
| CN208605652U (en) | A kind of sealing structure of two way seal three-eccentric-butterfly-valve | |
| CN210877197U (en) | Segmented pressure spring structure | |
| CN210429666U (en) | Differential pressure switch with multi-gear adjusting function and water chilling unit | |
| CN2216160Y (en) | Hydraulic end for small high-pressure pump | |
| CN2770531Y (en) | Elastic support device for fully-automatic electric pressure cooker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |