CN203466124U - Pressure switch for submerged pumps - Google Patents
Pressure switch for submerged pumps Download PDFInfo
- Publication number
- CN203466124U CN203466124U CN201320382333.6U CN201320382333U CN203466124U CN 203466124 U CN203466124 U CN 203466124U CN 201320382333 U CN201320382333 U CN 201320382333U CN 203466124 U CN203466124 U CN 203466124U
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- China
- Prior art keywords
- pressure
- immersible pump
- bearing post
- pressure switch
- moving spring
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Abstract
A pressure switch for submerged pumps comprises a pressing device and a micro switch. The pressing device comprises a pressure-bearing column and a reset spring, wherein one end of the pressure-bearing column bears the pressure of a conveying medium of a submerged pump, the other end of the pressure-bearing column abuts against the reset spring, and a downward pressing part of the pressure-bearing column is arranged in correspondence to a button of the micro switch. The pressure switch for submerged pumps has the advantages of simple structure and convenient operation.
Description
Technical field
The utility model relates to a kind of immersible pump pressure switch, particularly a kind ofly controls the pressure switch that immersible pump cuts out.
Background technology
Immersible pump (Submerged pump) is the water treatment instrument that the pump housing and motor can be immersed in the water work.Immersible pump and common water pumper difference are that immersible pump is operated under water, and water pumper is worked on the ground mostly.The operation principle of common centrifugal submersible pumps is: before immersible pump start, in suction pipe and immersible pump, must be full of liquid.After start, impeller High Rotation Speed, the liquid in immersible pump is along with impeller rotates together, under the effect of centrifugal force, fly away from impeller and outwards penetrate, the liquid of ejaculation speed in pump case diffuser chamber is slack-off gradually, pressure increases gradually, then from submersible pump outlet, drainage pipe, flows out.Now, in blade center, because liquid is thrown toward, form the vacuum low-pressure district that does not both have air also there is no liquid around, the liquid in liquid pool is under the atmospheric effect of pond face, in suction pipe flows into immersible pump.Liquid is continuously pumped up and continuously from discharge pipe, is flowed out like this from liquid pool.Immersible pump is widely used in the aspects such as field irrigation, draining and farming and animal husbandry, industrial and mining enterprises, urban water supply, draining.The general flow of immersible pump can reach (5m
3~ 650m
3) per hour, lift can reach 10 ~ 550 meters.
The motor that immersible pump is used has dry type (motor is all sealed in motor bin), the half dry type (seal stator of motor, and rotor turns round in water), filling type (the oil-filled in case moisture of motor internal is invaded winding) and wet type (motor internal water-filling, stator and rotor all turn round in water) etc. type, first 3 kinds all need sealing and manufacture installation accuracy and have relatively high expectations.
The delivery port of immersible pump is generally connected with drainage pipe, and the exit of this drainage pipe is provided with valve.Immersible pump in use, is first opened immersible pump, then opens valve water.When the length of drainage pipe is longer, open after immersible pump, also need to walk a segment distance could arrive the valve place of drainage pipe end, and now immersible pump in operating condition, but its water pumping is not used, and just makes the pressure rise in immersible pump.The rising of this pressure, pressure hour only can cause the waste of electric power, when pressure is large, can damage immersible pump.
Summary of the invention
The utility model provides a kind of immersible pump pressure switch.
For achieving the above object, the technical solution adopted in the utility model is: a kind of immersible pump pressure switch, comprise press device and sensitive switch, and described press device comprises pressure-bearing post and back-moving spring; The pressure of described immersible pump pumped (conveying) medium is born in one end of described pressure-bearing post, and the other end and described back-moving spring are conflicted and arranged; The setting corresponding to the button of described sensitive switch of the pressing member of described pressure-bearing post.
Preferred technical scheme is: described back-moving spring is Compress Spring.
Preferred technical scheme is: described Compress Spring is installed in the installing hole of a back-moving spring mount pad.
Preferred technical scheme is: the installing hole of described back-moving spring mount pad is through hole, and the bottom of this through hole is provided with screw.
Preferred technical scheme is: described pressing member is a plectrum, and this plectrum is provided with through hole, and described pressure-bearing post wears described through hole setting.
Preferred technical scheme is: described pressure-bearing post is provided with protuberance, the conflict side setting of described plectrum of this protuberance.
Preferred technical scheme is: described installing hole hole wall is provided with rectangular opening, and one end of described plectrum is located in described rectangular opening.
Preferred technical scheme is: described installing hole hole wall is provided with vertical groove, and one end of described plectrum is located in described groove.
Preferred technical scheme is: also comprise a seal casinghousing; Described pressure switch is located in described seal casinghousing, and the electric wire of described sensitive switch extends outside described seal casinghousing; Described seal casinghousing is provided with an opening, and on this opening, sealing is provided with elastomeric element, the corresponding described elastomeric element setting in that one end of the pressure that bears described immersible pump pumped (conveying) medium of the pressure-bearing post of described press device.
Preferred technical scheme is: described elastomeric element is a rubber sheet gasket.
The utility model operation principle is: the pressure that utilizes pressure-bearing post to experience pumped (conveying) medium in immersible pump changes, when the pressure rise of pumped (conveying) medium is to a certain degree time, the resistance that pressure-bearing post overcomes back-moving spring moves down, when pressure-bearing post moves a certain distance, will press the button of sensitive switch, the motor that this sensitive switch cuts out immersible pump does not turn round it.When the pressure of pumped (conveying) medium returns to normal condition, back-moving spring moves pressure-bearing post in the other direction, and at this moment pressure-bearing post and microswitch push-button disengage, thereby makes motor for submerged pump recover running.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1, because the utility model microswitch structure is compact, so it can be arranged in immersible pump, thus the convenient switch of controlling immersible pump.
2, the utlity model has advantage simple in structure, easy to operate.
Accompanying drawing explanation
Accompanying drawing 1 is for having the immersible pump schematic diagram of pressure switch;
Accompanying drawing 2 is the A portion enlarged drawing (having pressed microswitch push-button) of accompanying drawing 1;
Accompanying drawing 3 is the A portion enlarged drawing (not pressing microswitch push-button) of accompanying drawing 1;
Accompanying drawing 4 is the utility model pressure switch explosive view;
Accompanying drawing 5 is for having the electrical schematic of the immersible pump of pressure switch;
Accompanying drawing 6 is the first pressure-bearing post, plectrum and back-moving spring mount pad assembling schematic diagram;
Accompanying drawing 7 is the second pressure-bearing post, plectrum and back-moving spring mount pad assembling schematic diagram.
In above accompanying drawing: 1, immersible pump; 2, pumped (conveying) medium flows to; 3, elastomeric element; 4, pressure-bearing post; 5, back-moving spring; 6, back-moving spring mount pad; 7, plectrum; 8, sensitive switch; 9, screw; 10, pressure switch; 11, thermal protector; 12, float switch; 13, electric capacity; 14, motor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Notice, appended graphic the illustrated structure of this specification, ratio, size etc., equal contents in order to coordinate specification to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the present invention.
Embodiment: a kind of immersible pump pressure switch
Shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, a kind of immersible pump pressure switch, comprises press device and sensitive switch 8.The effect of press device is: bear the pressure of described immersible pump 1 pumped (conveying) medium, when pressure rise, trigger the button of sensitive switch 8.The effect of sensitive switch is the start-stop of controlling motor for submerged pump.In the circuit of the positive and negative Wiring port access immersible pump 1 of sensitive switch 8.Sensitive switch 8 can adopt prior art to make, and its requirement is: 1, under the pressed state of the button of sensitive switch 8 in press device, the circuit of immersible pump 1 is for closing, thereby motor for submerged pump is closed; 2, when press device does not contact with the button of sensitive switch 8, the circuit of immersible pump 1 is path, thereby motor for submerged pump is opened.So sensitive switch specifically can be selected position limited inching switch, can claim micro limit switch, micro limit switch again.The design at other position of described immersible pump 1 can be with reference to the design of existing immersible pump.
The pumped (conveying) medium of general immersible pump 1 flows to 2 as shown in Figure 1.The delivery port of immersible pump 1 is generally connected with drainage pipe, and the exit of this drainage pipe is provided with valve, and for example the valve for the immersible pump 1 of watering flowers is spray gun.While not opening spray gun when opening the motor of immersible pump, after the motor rotation certain hour of immersible pump 1, pumped (conveying) medium arrives spray gun, but now because spray gun is not opened, so the pumped (conveying) medium in the drainage pipe of immersible pump 1 and immersible pump 1 housing is along with the running of the motor of immersible pump 1, its pressure raises, when this pressure-acting is during to press device, trigger the button of sensitive switch 8, the motor of final plant closure immersible pump 1.When opening spray gun, along with pumped (conveying) medium is from spray gun is released into drainage pipe, the pressure of pumped (conveying) medium returns to normally, and at this moment press device separates with the button of sensitive switch 8, and the motor of opening immersible pump 1 transfers out continuously pumped (conveying) medium under the effect of motor.
Described press device comprises pressure-bearing post 4 and back-moving spring 5; One end of described pressure-bearing post 4 is the upper surface of the diameter major part of pressure-bearing post 4 shown in accompanying drawing 4, bear the pressure of described immersible pump 1 pumped (conveying) medium, described pressure-bearing post 4 also only has this end to bear the pressure of described immersible pump 1 pumped (conveying) medium, and the pressure of described immersible pump 1 pumped (conveying) medium is not all born at other position of pressure-bearing post 4, because only in this way, the resistance that just can make pressure-bearing post 4 can bear the pressure of pumped (conveying) medium and overcome back-moving spring moves, so that triggers the button of described sensitive switch 8.If the pressure of described immersible pump 1 pumped (conveying) medium is also born at other position of pressure-bearing post 4, so due to counteracted by pressure, 4, pressure-bearing post can not be along with the increase of the pressure of pumped (conveying) medium and is moved.
The other end of pressure-bearing post 4 is the lower surface of the diameter major part of pressure-bearing post 4 shown in accompanying drawing 4, and it and described back-moving spring 5 are conflicted and arranged.Back-moving spring has two aspect effects: 1, because spring has certain precompression, when ambient pressure overcomes this precompression, back-moving spring moves under the effect of ambient pressure, so can have the spring of different precompressions with the pressure of pumped (conveying) medium in corresponding immersible pump by selection.2, when the ambient pressure that back-moving spring is applied is eliminated, back-moving spring restores to the original state.The present embodiment is designed to one section for the larger cap shape of diameter by the structure of pressure-bearing post 4, and another section is the column that diameter is less, between cap shape section and column section, forms stage portion, and with the described spring setting of conflicting of this stage portion.
The pressing member of described pressure-bearing post 4 refers under a state with the corresponding setting of button of described sensitive switch 8, and the button that the pressing member of pressure-bearing post 4 can act on sensitive switch 8 triggers the button of sensitive switch 8.On described pressure-bearing post 4, can directly extend one as pressing member, pressure-bearing post 4 is one-body molded with pressing member.Also can design separately a pressing member.The button of sensitive switch 8 is located at the below of pressing member, and interval arranges between the two, and when pressing member is along with pressure-bearing post 4 moves down, pressing member can act on the button of sensitive switch 8.Sensitive switch 8 is with respect to pressure-bearing post 4, and it will be fixedly installed, and pressure-bearing post 4 will move setting.
Back-moving spring 5 can be flexure strip, but the execution mode of described back-moving spring 5 the bests is Compress Springs.And preferred execution mode is that described Compress Spring is installed in the installing hole of back-moving spring mount pad 6.Under the restriction of installing hole, Compress Spring, under the constraint of installing hole, can only move along installing hole like this.The installing hole of described back-moving spring mount pad 6 can be blind hole, at this moment, as long as the precompression of Compress Spring is set, surpasses so this pressure, triggers the button of sensitive switch.But because the precompression of Compress Spring is generally constant, once Compress Spring is selected, the precompression of Compress Spring is also thereupon selected so, therefore at this moment as long as when the pressure of pumped (conveying) medium surpasses this precompression, will close motor for submerged pump.Best execution mode is that installing hole is designed to through hole, and screw 9 is set in through hole.And screw 9 can be by mobile with compression or unclamp Compress Spring, thereby regulate the precompression of Compress Spring.Finally with this, reaching pumped (conveying) medium can trigger the effect that immersible pump 1 motor is closed down under different pressure.
Preferred embodiment for described pressing member is designed to independent parts, laminar plectrum 7 as shown in Figure 4, centre has circular hole, the column section of pressure-bearing post 4 arranges through hole, the conflict upper edge of plectrum 7, the lower edge of the cap shape section of pressure-bearing post, the lower edge of plectrum 7 is against the upper end of Compress Spring, and plectrum 7 can move along with moving up and down of pressure-bearing post 4 like this.One end of plectrum is used for triggering the button of sensitive switch 4.
Pressure-bearing post 4 also can not adopt the structure shown in accompanying drawing 4, but at middle part, also can a protuberance be set in bottom, be used for the upper edge for plectrum, the lower edge of plectrum 7 is against the upper end of Compress Spring, and plectrum 7 can move along with moving up and down of pressure-bearing post 4 like this.One end of plectrum is used for triggering the button of sensitive switch 4.
Shown in accompanying drawing 4 and accompanying drawing 6, described installing hole hole wall is provided with rectangular opening, and the rectangular opening of a side equates with the width of one end of plectrum 7, so that slide and be spacing in this hole in one end of plectrum 7, makes plectrum 7 when moving up and down, and is not offset.The rectangular opening of another side is larger, so that the circle of plectrum 7 width maximums can be passed.Because when assembling pressure switch, plectrum 7 need to pass to arrange from rectangular opening.
Another kind of execution mode is referring to shown in accompanying drawing 7, described installing hole hole wall is provided with vertical groove, concrete structure refers to that this groove directly extends to the upper end of installing hole, and the width at the two ends of plectrum 7 is respectively at the width coupling of vertical groove like this, thereby plectrum 7 is moved up and down under groove spacing.
In order to make pressure-bearing post 4 only at one end bear the pressure of pumped (conveying) medium, be therefore necessary to design a seal casinghousing; Described pressure switch is located in described seal casinghousing, and the electric wire of described sensitive switch 8 extends outside described seal casinghousing; When stretching out seal casinghousing, electric wire also needs to adopt hermetically-sealed construction.Described seal casinghousing is provided with an opening, on this opening, sealing is provided with elastomeric element 3, the corresponding described elastomeric element setting in that one end of the pressure that bears described immersible pump pumped (conveying) medium of the pressure-bearing post 4 of described press device, be that the below that the upper end of pressure-bearing post 4 is against elastomeric element 3 arranges, when elastomeric element 3 bears the pressure of pumped (conveying) medium, elastic deformation can occur, and this elastic deformation meeting is exerted pressure so that pressure-bearing post 4 moves to pressure-bearing post 4.Described elastomeric element 3 is a rubber sheet gasket.Because the elastic deformation of this material of rubber is larger.
Also can not design separately a seal casinghousing, for example, for dry submersible pump, because the motor bin that has been provided with a sealing in immersible pump is for putting motor, so can use the motor bin of this sealing as seal casinghousing, on motor bin, design an opening, on this opening, sealing is provided with elastomeric element 3, the corresponding described elastomeric element setting in that one end of the pressure that bears described immersible pump pumped (conveying) medium of the pressure-bearing post 4 of described press device, be that the below that the upper end of pressure-bearing post 4 is against elastomeric element 3 arranges, when elastomeric element 3 bears the pressure of pumped (conveying) medium, can there is elastic deformation, and this elastic deformation meeting is exerted pressure so that pressure-bearing post 4 moves to pressure-bearing post 4.Described elastomeric element 3 is a rubber sheet gasket.Because the elastic deformation of this material of rubber is larger.This is an optimum execution mode, because the design of sealed electrical cabin has been ripe technology, and the lead-out wire of sensitive switch is also connected directly in the circuit of immersible pump 1 without carrying out Seal Design in the present embodiment.Generally back-moving spring mount pad 6 is fixedly installed in motor bin, again sensitive switch 8 is fixed on back-moving spring mount pad 6, as shown in Figure 4, on back-moving spring mount pad 6, be fixed with two erection columns, on sensitive switch 8, correspondence is provided with two installing holes, when assembling, sensitive switch 8 is set on back-moving spring mount pad 6.
The electrical equipment principle of the immersible pump 1 of the present embodiment as shown in Figure 5, has pressure switch 10, thermal protector 11, float switch 12, electric capacity 13 and motor 14 and corresponding electric wire in accompanying drawing 5.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (8)
1. an immersible pump pressure switch, is characterized in that: comprise press device and sensitive switch, described press device comprises pressure-bearing post and back-moving spring; The pressure of described immersible pump pumped (conveying) medium is born in one end of described pressure-bearing post, and the other end and described back-moving spring are conflicted and arranged; The setting corresponding to the button of described sensitive switch of the pressing member of described pressure-bearing post.
2. immersible pump pressure switch according to claim 1, is characterized in that: described back-moving spring is Compress Spring.
3. immersible pump pressure switch according to claim 2, is characterized in that: described Compress Spring is installed in the installing hole of a back-moving spring mount pad.
4. immersible pump pressure switch according to claim 3, is characterized in that: the installing hole of described back-moving spring mount pad is through hole, and the bottom of this through hole is provided with screw.
5. immersible pump pressure switch according to claim 1, is characterized in that: described pressing member is a plectrum, and this plectrum is provided with through hole, and described pressure-bearing post wears described through hole setting.
6. immersible pump pressure switch according to claim 5, is characterized in that: described pressure-bearing post is provided with protuberance, the conflict side setting of described plectrum of this protuberance.
7. immersible pump pressure switch according to claim 1, is characterized in that: also comprise a seal casinghousing; Described pressure switch is located in described seal casinghousing, and the electric wire of described sensitive switch extends outside described seal casinghousing; Described seal casinghousing is provided with an opening, and on this opening, sealing is provided with elastomeric element, the corresponding described elastomeric element setting in that one end of the pressure that bears described immersible pump pumped (conveying) medium of the pressure-bearing post of described press device.
8. immersible pump pressure switch according to claim 7, is characterized in that: described elastomeric element is a rubber sheet gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320382333.6U CN203466124U (en) | 2013-06-28 | 2013-06-28 | Pressure switch for submerged pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320382333.6U CN203466124U (en) | 2013-06-28 | 2013-06-28 | Pressure switch for submerged pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466124U true CN203466124U (en) | 2014-03-05 |
Family
ID=50178472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320382333.6U Expired - Fee Related CN203466124U (en) | 2013-06-28 | 2013-06-28 | Pressure switch for submerged pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203466124U (en) |
-
2013
- 2013-06-28 CN CN201320382333.6U patent/CN203466124U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20160628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |