CN106504941A - A kind of novel differential pressure switch - Google Patents
A kind of novel differential pressure switch Download PDFInfo
- Publication number
- CN106504941A CN106504941A CN201611223718.2A CN201611223718A CN106504941A CN 106504941 A CN106504941 A CN 106504941A CN 201611223718 A CN201611223718 A CN 201611223718A CN 106504941 A CN106504941 A CN 106504941A
- Authority
- CN
- China
- Prior art keywords
- differential pressure
- hole
- chute
- switch base
- flow tube
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
A kind of novel differential pressure switch.It is related to switch element field.Propose the novel differential pressure switch that a kind of delicate structure, stability are high, long service life and operating accuracy are good.Including flow tube, switch base, movable contact spring, fixed touching plate, frizzen and differential pressure diaphragm, the switch base is fixedly connected on flow tube, and the switch base in hollow form and offered chute towards on the end face of flow tube；Offering on the side wall that pressure limiting hole and flow tube is provided with the middle part of the flow tube and crossing triggering hole and the reset hole that chute is connected, the triggering hole and reset hole set up the both sides in pressure limiting hole separately；The differential pressure diaphragm was fixedly connected at the notch of chute and the flow passage including being connected as a single entity and work department.The characteristics of present invention has high stability, long service life and good operating accuracy on the whole.
Description
Technical field
The present invention relates to switch element field, more particularly to the improvement of wherein differential pressure switch.
Background technology
Traditional differential pressure switch is made up of two bellows chambeies, by the deformation of wherein diaphragm finally triggering the micro- of the top
Dynamic switch so that electric signal output；Wherein, representative as State Bureau announce on June 20th, 2012 a entitled
Shown in " micro-pressure differential pressure switch ", the Chinese invention patent of Application No. " 201120356399.9 ".However, people are in actually making
Problems with is found that with after：First, as diaphragm therein is generally made using rubber, therefore often make because of ageing of rubber
Into the pressure instability even phenomenon of leak；2nd, as which is triggered using microswitch, therefore also inevitably bring
The defect such as complex structure, assembly difficulty are big, manufacturing cost is high and error is big.
Content of the invention
The present invention is directed to problem above, it is proposed that a kind of delicate structure, stability are high, long service life and operating accuracy is good
Novel differential pressure switch.
The technical scheme is that：Including flow tube, switch base, movable contact spring, fixed touching plate, frizzen and differential pressure diaphragm,
The switch base is fixedly connected on flow tube, and the switch base was offered in hollow form and towards on the end face of flow tube
Chute；Offer on the side wall for being provided with pressure limiting hole and flow tube in the middle part of the flow tube with cross the triggering hole that is connected of chute and
Reset hole, the triggering hole and reset hole set up the both sides in pressure limiting hole separately；
The differential pressure diaphragm was fixedly connected at the notch of chute and the flow passage including being connected as a single entity and work department, described
Flow passage is located at reset hole and crosses between chute and offer the through hole connected with reset hole, the work department in the middle part of flow passage
It is in arc surfaced between triggering hole and mistake chute and in the middle part of work department；
One end of the fixed touching plate is stretched in switch base, and one end of the movable contact spring stretches in switch base and stretches to determines
Towards the side for crossing chute, the frizzen wears the bottom land for crossing chute and stretches in switch base and movable contact spring contact
Middle part be fixedly linked, the frizzen away from movable contact spring one end be located at differential pressure diaphragm work department dorsad trigger the one of hole
Side.
It is elastic contact blade that the movable contact spring stretches into one section in switch base, and one end of the frizzen is fixedly connected on elasticity
The middle part of contact, the end of the elastic contact blade are provided with movable contact, and the fixed touching plate stretches into the one end in switch base and is provided with to be determined
Contact, the movable contact and fixed contact are oppositely arranged.
The bottom land for crossing chute offers the seal groove concentric with the work department of differential pressure diaphragm, in the frizzen
Portion wears the bottom land of the seal groove, be arranged with sealing shroud on the outer wall of the frizzen, and the sealing shroud swelling is arranged on
Between seal groove and frizzen.
Internal thread is offered on the inwall of the sealing shroud.
The triggering hole offers heavy platform towards at the aperture of switch base.
The differential pressure diaphragm is made of metal.
During present invention work, " kick " upwards passively produced by the work department of differential pressure diaphragm effectively jack-up triggering upwards
Bar so that movable contact spring is up to be contacted with fixed touching plate, sends electric signal；And the restoring force by back pressure with movable contact spring itself matches
Close so that " kick " resets the work department of differential pressure diaphragm downwards.The present invention can carry out sensitivity, accurate control by differential pressure diaphragm
System, and can under little hydraulic pressure environment normal work, with applied widely the characteristics of；And wherein differential pressure diaphragm is made of metal,
So as to the characteristics of with long service life, good stability.The present invention has high stability, long service life and work on the whole
The characteristics of precision is good.
Description of the drawings
Fig. 1 is the structural representation of this case,
Fig. 2 is the top view of Fig. 1,
Fig. 3 be the A-A of Fig. 2 to sectional view,
Fig. 4 is the stereogram of Fig. 1,
Fig. 5 is the structural representation of differential pressure diaphragm in this case,
Fig. 6 is the stereogram of Fig. 5,
Fig. 7 is the working state schematic representation one of this case,
Fig. 8 is the working state schematic representation two of this case；
In figure, 1 is flow tube, and 11 is pressure limiting hole, and 12 is triggering hole, and 13 is reset hole, and 2 is switch base, and 20 was chute, and 3 are
Contact, 31 is elastic contact blade, and 32 is movable contact, and 4 is fixed touching plate, and 41 is fixed contact, and 5 is frizzen, and 50 is sealing shroud, and 6 is poor
Pressuring film plate, 61 is flow passage, and 62 is work department.
Specific embodiment
The present invention as shown in figures 1-8, including flow tube 1, switch base 2, movable contact spring 3, fixed touching plate 4, frizzen 5 and differential pressure film
Piece 6, the switch base 2 are fixedly connected on flow tube 1 by rivet, and in hollow form, (switch base includes top to the switch base 2
Open pedestal and top cover, push rod are removably connected with pedestal by four posts) and open up towards on the end face of flow tube 1
There is chute 20；Offer on the side wall that pressure limiting hole 11 and flow tube 1 is provided with the middle part of the flow tube 1 be connected with chute 20 excessively
Logical triggering hole 12 and reset hole 13, the triggering hole 12 and reset hole 13 set up the both sides in pressure limiting hole 11 separately；
The differential pressure diaphragm 6 was fixedly connected at the notch of chute 20 and the flow passage 61 including being connected as a single entity and work department
62, the flow passage 61 is located at reset hole 13 and crosses between chute 20 and offer in the middle part of flow passage 61 and connected with reset hole 13
Through hole, the work department 62 be located at triggering hole 12 and cross chute 20 between and work department 62 in the middle part of be in arc surfaced；
One end of the fixed touching plate 4 is stretched in switch base 2, and one end of the movable contact spring 3 stretches in switch base 2 and stretches into
To fixed touching plate 4 towards the side for crossing chute 20, the frizzen 5 wears the bottom land for crossing chute 20 and stretches to switch base 2
The interior middle part with movable contact spring 3 is fixedly linked, the frizzen 5 away from movable contact spring 3 one end be located at differential pressure diaphragm 6 work department 62
The side in hole 12 is dorsad triggered.The working condition of the present invention as Figure 7-8, will all the time through pressure limiting during current proper flow
Hole, once hydraulic pressure is excessive, then rate is introduced into triggering hole carries out pressure release, when hydraulic pressure exceedes setting value, then will be in triggering hole
The sufficiently large pressure of savings promotes the middle part of the work department of differential pressure diaphragm to produce " kick " upwards, so as to jack-up triggering upwards
Bar, final cause that movable contact spring is up to be contacted with fixed touching plate, send electric signal；Hereafter, being closed water by equipment is affected, after current are obstructed
Back pressure will be reversely produced, and takes the lead in being entered in chute by reset hole, and coordinate the restoring force of movable contact spring itself, force differential pressure film
The middle part of the work department of piece produces downward " kick ", so that differential pressure diaphragm and frizzen are reset to original state.
It is elastic contact blade 31 that the movable contact spring 3 stretches into one section in switch base, and one end of the frizzen 5 is fixedly connected on
The middle part of elastic contact blade 31, the end of the elastic contact blade 31 are provided with movable contact 32, and the fixed touching plate 4 is stretched in switch base 2
One end be provided with fixed contact 41, the movable contact 32 and fixed contact 41 are oppositely arranged.So, it is effectively ensured by elastic contact blade
When differential pressure diaphragm resets, movable contact and fixed contact can be efficiently separated, and frizzen is resetted.
The bottom land for crossing chute offers the seal groove concentric with the work department of differential pressure diaphragm 6, the frizzen 5
Middle part wears the bottom land of the seal groove, is arranged with sealing shroud 50 on the outer wall of the frizzen 5,50 swelling of the sealing shroud
It is arranged between seal groove and frizzen 5.So as to effectively lift the sealing between frizzen and seal groove, that is, it is effectively ensured
The overall use reliability of the stability of equipment operation and equipment and service life.
Internal thread is offered on the inwall of the sealing shroud 50.So, the friction between sealing shroud and frizzen can be caused
Power, is entered so that frizzen smoothly can be done relative motion with sealing shroud less than the frictional force between sealing shroud and seal groove
And while equipment operational reliability is ensured, be also always ensured that inside switch base and crossed and be between chute efficient sealed.
The triggering hole 12 offers heavy platform towards at the aperture of switch base 2.So as to reserve to the work department of pressure reduction diaphragm
Motion space, it is to avoid movement interference.
The differential pressure diaphragm 6 is made of metal.So as to the characteristics of with long service life, good stability.
Claims (6)
1. a kind of novel differential pressure is switched, it is characterised in that including flow tube, switch base, movable contact spring, fixed touching plate, frizzen and difference
Pressuring film plate, the switch base are fixedly connected on flow tube, and the switch base is opened in hollow form and towards on the end face of flow tube
It was provided with chute；Offer on the side wall for being provided with pressure limiting hole and flow tube in the middle part of the flow tube and touching that chute excessively is connected
Hair engaging aperture and reset hole, the triggering hole and reset hole set up the both sides in pressure limiting hole separately；
The differential pressure diaphragm was fixedly connected at the notch of chute and the flow passage including being connected as a single entity and work department, described
Flow passage is located at reset hole and crosses between chute and offer the through hole connected with reset hole, the work department in the middle part of flow passage
It is in arc surfaced between triggering hole and mistake chute and in the middle part of work department；
One end of the fixed touching plate is stretched in switch base, and one end of the movable contact spring stretches in switch base and stretches to determines
Towards the side for crossing chute, the frizzen wears the bottom land for crossing chute and stretches in switch base and movable contact spring contact
Middle part be fixedly linked, the frizzen away from movable contact spring one end be located at differential pressure diaphragm work department dorsad trigger the one of hole
Side.
2. a kind of novel differential pressure according to claim 1 is switched, it is characterised in that the movable contact spring is stretched in switch base
One section is elastic contact blade, and one end of the frizzen is fixedly connected on the middle part of elastic contact blade, the end of the elastic contact blade
Movable contact is provided with, one end that the fixed touching plate is stretched in switch base is provided with fixed contact, and the movable contact and fixed contact are oppositely arranged.
3. a kind of novel differential pressure switch according to claim 1, it is characterised in that the bottom land for crossing chute offer with
The concentric seal groove of the work department of differential pressure diaphragm, wears the bottom land of the seal groove, the triggering in the middle part of the frizzen
It is arranged with sealing shroud on the outer wall of bar, the sealing shroud swelling is arranged between seal groove and frizzen.
4. a kind of novel differential pressure according to claim 3 is switched, it is characterised in that offered on the inwall of the sealing shroud
Internal thread.
5. a kind of novel differential pressure according to claim 1 is switched, it is characterised in that hole of the triggering hole towards switch base
Heavy platform is offered at mouthful.
6. a kind of novel differential pressure according to claim 1 is switched, it is characterised in that the differential pressure diaphragm is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223718.2A CN106504941B (en) | 2016-12-27 | 2016-12-27 | A kind of differential pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223718.2A CN106504941B (en) | 2016-12-27 | 2016-12-27 | A kind of differential pressure switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106504941A true CN106504941A (en) | 2017-03-15 |
| CN106504941B CN106504941B (en) | 2018-10-09 |
Family
ID=58334066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223718.2A Active CN106504941B (en) | 2016-12-27 | 2016-12-27 | A kind of differential pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106504941B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5703552A (en) * | 1994-12-06 | 1997-12-30 | Eaton Corporation | Electrical safety switch |
| CN202796730U (en) * | 2012-07-30 | 2013-03-13 | 汤以华 | Differential pressure switch |
| CN203631417U (en) * | 2013-12-12 | 2014-06-04 | 佟勇华 | A water flow sensing switch |
| CN203812803U (en) * | 2014-04-11 | 2014-09-03 | 张蔚 | Flow switch |
| CN205050771U (en) * | 2015-11-05 | 2016-02-24 | 佛山市吉泉净水科技有限公司 | High -voltage switch |
| CN206388644U (en) * | 2016-12-27 | 2017-08-08 | 中山市博安泰电器科技有限公司 | Novel differential pressure is switched |
-
2016
- 2016-12-27 CN CN201611223718.2A patent/CN106504941B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5703552A (en) * | 1994-12-06 | 1997-12-30 | Eaton Corporation | Electrical safety switch |
| CN202796730U (en) * | 2012-07-30 | 2013-03-13 | 汤以华 | Differential pressure switch |
| CN203631417U (en) * | 2013-12-12 | 2014-06-04 | 佟勇华 | A water flow sensing switch |
| CN203812803U (en) * | 2014-04-11 | 2014-09-03 | 张蔚 | Flow switch |
| CN205050771U (en) * | 2015-11-05 | 2016-02-24 | 佛山市吉泉净水科技有限公司 | High -voltage switch |
| CN206388644U (en) * | 2016-12-27 | 2017-08-08 | 中山市博安泰电器科技有限公司 | Novel differential pressure is switched |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106504941B (en) | 2018-10-09 |
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