CN2201500Y - Electric miniature water pump series - Google Patents

Abstract

The utility model provides an electric miniature water pump system which uses part of flow pumps and has the comprehensive advantages of flat variation of a pressure head, high flow quantity, high work efficiency, stable running and low noise. An automatic pump which is provided with a torsion spring valve, a movable and shutter type reed switch, a bidirectional controllable silicon, a temperature protector, etc. can realize that the running of the pump is directly controlled by a water valve. The utility model has the advantages of reliable operation, long service life, heat resistance, acid and base resistance, no water quality pollution, convenient assembly and disassembly and easy fabrication. The utility model can not only be used for household but also be matched with a water cooling air conditioner and a water heater, etc. or be matched with a small-size courtyard fountain, and is suitable for transporting beverage, lightweight oil, etc. The application range is wide.

Description

Electric miniature water pump series

The utility model relates to a kind of electronic micro pump of on-positive displacement pump, especially on-positive displacement.

Disclose a kind of electronic micro pump in Chinese patent 89219204.6, it adopts the vortex type pump to carry liquid, and the working efficiency of this pump is lower, has only about 20%; It does not contain the control system with the automatic open and close motor power of water valve open and close yet.If motor is running or generation stall under small flow for a long time, also can cause overload, serious heating, even burn.

The electronic micro pump series that provides a kind of working efficiency higher is provided the purpose of this utility model, and motor is not afraid of stall or overload and can be by the electronic micro pump series of the automatic type that water valve is controlled.

The utility model adopts part streaming pump, and it has the straight-vaned full-open type impeller of radial, and pump case is the concentric ring type volute, and its flow area is a rectangle, and the water outlet inner chamber of pump is provided with the Diffuser of band flow limited nozzle.

The impeller of this series pump contains 6～8 blades that are evenly distributed along circumference, inclination angle, blade front is 8～12 °, blade exit end width is 8～10mm, impeller diameter is 70～130mm, corresponding pump case diameter is than the big 5～8mm of impeller diameter, gap between impeller and pump case and the pump postoperculum is 1～2mm, and the internal diameter of inlet tube and outlet tube is 12～25mm.

The additional automatic control section of this pump comprises components and parts such as torsion spring valve, moving box-like dry reed-pipe, bidirectional triode thyristor, temperature protector and resistance, electric capacity; wherein have permanent magnet on the torsion spring valve; be loaded in the intake pipe; moving box-like dry reed-pipe, bidirectional triode thyristor and resistance, electric capacity etc. are loaded in the same housing; and dry reed-pipe will be near the torsion spring valve, and capacitance resistance string C is also linked in the two ends of dry reed-pipe JAG ₂, R ₂After, an end series resistors R ₁After meet the A of bidirectional triode thyristor T ₁The utmost point, the G utmost point of another termination bidirectional triode thyristor T, silicon controlled A ₁The utmost point is connected in series strip resistance R again ₃Tutorial light LED, temperature protector JB ₁, meet power plug A end, silicon controlled A behind the motor windings D ₂The utmost point is connected in series temperature protector JB again ₂After connect power plug B end, temperature protector JB ₁, JB ₂Be contained in the motor respectively and pipeline in; Perhaps between bidirectional triode thyristor T and tutorial light LED, meet a double contact switch K again, the O termination tutorial light of switch, a contact K ₁Meet silicon controlled A ₁The utmost point, another contact K ₂Meet silicon controlled A ₂The utmost point.

Accompanying drawing 1. head characteristic curve synoptic diagrams of the present utility model.

Accompanying drawing 2. pipe type structural representations of the present utility model (containing automatic control section).

Accompanying drawing 3. horizontal type structure schematic representation of the present utility model (not containing automatic control section).

Accompanying drawing 4. automatic control section schematic circuits of the present utility model.

The water that is transferred (or other liquid medium) enters leaf grating from the impeller center, rotates with impeller, throws away from the impeller edge.Owing to adopt straight radial blade, make the indicatrix of pump more smooth (seeing accompanying drawing 1); Because the blade broad, the flow velocity in the leaf grating is little again, and straight radial blade and concentric ring volute are easily manufactured, and the internal surface degree of finish of flow process is guaranteed easily, so its flow losses are quite little; Simultaneously impeller adopts full-open type, has also reduced operating disc friction, about therefore can doubling than the total efficiency of former vortex type pump.After closing pump during water valve, this pump is in low loaded work piece state in addition, and therefore not cutting off motor power in the long period does not have big obstruction yet.

Automatic control process of the present utility model: when the water valve of UNICOM's pump cuts out, water in the pump promptly stops to flow, and at this moment the torsion spring valve is closed under the effect of torsion spring, and the permanent magnet magnetic force on it acts on dry reed-pipe JAG and reed switch contact is disconnected, therefore cut off motor power, make the motor stall; When water valve was opened, the water in the pump began to flow, and the torsion spring valve is opened, and the magnetic force on it is connected effect reduction, the reed switch contact of dry reed-pipe, and motor restarts running.Capacitance resistance string C ₂, R ₂Effect be that dry reed-pipe etc. is protected.Temperature protector JB ₁And JB ₂Monitor working medium temperature such as motor self-temperature and water respectively, just in case motor overloads, stall etc. and cause overheated or the working medium temperature too high, their promptly cut off automatically, reach the effect that temperature is protected, and treat that temperature recovers just often to reclose.It is in order to provide convenience to the user, to select according to actual needs: just switch is dialled to K by the automatic control pump operation of water valve if want to realize that K switch is set ₁The contact, otherwise just dial to K ₂The contact.

The utility model can be made into pipe type or horizontal, and its main distinction just is the setting of intake pipe.Horizontal intake pipe 2 directions are consistent with the axis of impeller 7, and the direction of outlet pipe (being Diffuser 6) is vertical with it, and can arbitrarily install by the upper and lower, left and right four direction; The intake pipe of pipe type and outlet pipe on same axis, and with the axis normal of impeller.The micromachine 1 of impeller is selected single phase alternating current 220V capacitor-operated motor for use, and running is steady, noise is low, and requires to have higher starting torque and overloading ratio.Adopt oil sealing 10(or mechanical seal between the motor and the pump housing) and water-throwing disk 11 double seals, 8 sealings of O type ring adopted between pump case 3 and the pump postoperculum 9.Impeller can lean on axle plane that match, that parallel to the axis torsion pass, by shaft shoulder location, installs with convenient.Feed cable is furnished with three-prong plug, and uses and draw non-off-line card that the cable Outlet is fixed, to improve Security.The design of pump forms series, can be divided into 40w, 60w, 90w, 120w etc. by motor shaft power.For single-phase capacitor-operated motor, impeller diameter can correspondingly be chosen between 70～130mm, corresponding volute diameter gets final product than the big 5～8mm of impeller diameter, and the gap between impeller and pump case and the pump postoperculum is 1～2mm, and the internal diameter of inlet tube and outlet tube should be 12～25m mutually.The number of blade, inclination angle, blade front and blade exit end width can select same numerical value for different power of motor, for example concerning single-phase capacitor-operated motor, can be that 6～8, inclination angle, front are that 8～12 °, outlet end width are to choose in 8～10mm all in the number of blade.For example, according to the 40W micro pump that above-mentioned designing institute is made, its peak rate of flow can reach 1.6m ³/ h, maximum pressure head can reach 8m.Impeller, pump case, pump postoperculum etc. can adopt Reinforced Nylon to make, the available stainless steel material of impeller shaft (that is motor shaft), and Sealings such as oil sealing can adopt special nitrile butadiene rubber etc.This pump can not only transporting water, can also carry beverage, light oil, and medium such as acid, aqueous slkali, and medium temperature can not cause distortion, holddown during near 100 ℃ yet.

Single-phase capacitor-operated motor itself with capacitor 13(be capacitor C in the accompanying drawing 4 ₁) can be directly installed on motor top (as shown in Figure 3), also can be contained in the housing that constitutes by pump case ante-chamber and top cover 5 (as shown in Figure 2 with the component such as dry reed-pipe of control section, this moment, the torsion spring valve 4 with permanent magnet was contained in the intake pipe that is positioned at the pump case ante-chamber), to dwindle the overall volume of pump, the lead-in wire that leads to motor is walked, is not exposed via the internal punches of the pump housing, realizes electromechanical integration on the overall structure of pump; Component such as the dry reed-pipe of control section, torsion spring valve can also be contained in the independent housing together, connect with pipeline.The temperature protector 12(of motor is the JB in the accompanying drawing 4 ₁) be contained in motor internal, be adjacent to staor winding, the temperature protector of medium (is the JB in the accompanying drawing 4 ₂) be contained in and get final product in the water pipe.

In sum, electric miniature water pump series provided by the utility model not only have pressure head change smooth, flow greatly, high efficiency, operate steadily, comprehensive advantage that noise is low, but also have reliable operation, long characteristics of life-span, and motor is not afraid of stall or overload, can realize being moved by the water valve control pump. Heat-resisting, the acid and alkali-resistance of this pump energy can not cause water pollution, and also dismounting is easy to maintenance simultaneously, is easy to make. It not only can be for household use to solve the not enough problem of hydraulic pressure, can also support the use with water-cooling air conditioner, solar water heater, gas heater etc., or be used in small-sized courtyard-style fountain, and carry beverage, light oil, Acidity of Aikalinity solution etc., range of application is wider.

Claims (4)

1, a kind of electronic micro pump series, drive by micromachine (1), it is characterized in that adopting part streaming pump, has the straight-vaned full-open type impeller of radial (7), pump case (3) is the concentric ring type volute, flow area is a rectangle, and the water outlet inner chamber of pump is provided with the Diffuser (6) of band flow limited nozzle.

2, electronic micro pump series as claimed in claim 1, it is characterized in that this pump impeller has 6～8 blades, inclination angle, blade front is 8 °～12 °, blade exit end width is 8～10mm, impeller diameter is 70～130mm, corresponding pump case diameter is than the big 5～8mm of impeller diameter, and the gap between impeller and pump case and the pump postoperculum is 1～2mm, and the internal diameter of inlet/outlet water pipe is 12～25mm.

3, as claim 1, one of 2 described electronic micro pump series; it is characterized in that this pump also has the automatic control section of components and parts such as comprising torsion spring valve, moving box-like dry reed-pipe, bidirectional triode thyristor, temperature protector and resistance, electric capacity; wherein have permanent magnet on the torsion spring valve (4); be loaded in the intake pipe (2); moving box-like dry reed-pipe, bidirectional triode thyristor and resistance, electric capacity etc. are loaded in the same housing; and dry reed-pipe will be near the torsion spring valve, and capacitance resistance string C is also linked in the two ends of dry reed-pipe JAG ₂, R ₂After, an end series resistors R ₁After meet the A of bidirectional triode thyristor T ₁The utmost point, the G utmost point of another termination bidirectional triode thyristor T, silicon controlled A ₁The utmost point is connected in series strip resistance R again ₃Tutorial light LED, temperature protector JB ₁, meet power plug A end, silicon controlled A behind the motor windings D ₂The utmost point is connected in series temperature protector JB again ₂After connect power plug B end, temperature protector JB ₁, JB ₂Be contained in the motor respectively and pipeline in.

4, electronic micro pump series as claimed in claim 3 is characterized in that connecing a double contact switch K, the O termination tutorial light of switch, a contact K again between bidirectional triode thyristor T and tutorial light LED ₁Meet silicon controlled A ₁The utmost point, another contact K ₂Meet silicon controlled A ₂The utmost point.

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