CN2111386U

CN2111386U - Miniature suction pump

Info

Publication number: CN2111386U
Application number: CN 91230717
Authority: CN
Inventors: 缪国伟; 顾民; 朱荣初; 陈爱丽; 周玉民
Original assignee: NANJING AERONAUTICAL ENG
Current assignee: NANJING AERONAUTICAL ENG
Priority date: 1991-12-19
Filing date: 1991-12-19
Publication date: 1992-07-29

Abstract

The utility model discloses a household miniature pump, which uses a single-phase alternating current motor to drive a single-stage horizontal type vortex pump, a self-absorption chamber (11) is additionally provided, and the self-absorption is realized through a honeycomb duct (27), a back flow hole (28), a check valve (17), etc. The vacuum degree of the self-absorption is more than 7.5 meters, and the self-absorption time is less than 120 seconds. The utility model can be used for 60W-120W series, having high delivery lift and big flow quantity, which is in particular suitable for establishing an 'undeveloped tap water' in countryside households.

Description

Miniature suction pump

The utility model relates to a kind of non-varactor pump.

The utility model is the improvement on No. 89219204.6 patent bases.Though this patent has solved the problem of hydraulic pressure deficiency for the high floor resident in cities and towns with the family of water heater, can not self-priming during as extraction well water or river in the rural area, and various performance parameters also dislikes littler, limited its application area.

The purpose of this utility model is to provide a kind of domestic miniature water pump with suction capacity, suitable raising of performance parameter simultaneously.

Technical solution of the present utility model is as follows: the single-stage horizontal peripheral pump that still adopts rectangular cross-section, double shrouded wheel bilateral limit open type runner, drive with load motor, adopt to float between impeller and the axle and cooperate, have equalizing orifice on the impeller, be added with black box between impeller and the motor, " O " RunddichtringO is housed between the pump housing and the protecgulum, its main improvement is to set up above the pump housing from the suction-chamber, be divided into two spaces from the suction-chamber, the space that connects between fill hose joint and the pump housing water intake is called water-inlet cavity, the space that connects between titting water outlet and the pump housing water outlet is called the self-priming chamber, also connecting a honeycomb duct on the pump housing water outlet stands upright in the self-priming chamber, honeycomb duct communicates with the self-priming chamber, radially slot in the honeycomb duct top, an other return port connection self-priming chamber and the pump chamber of also having of pump housing water outlet also established a water filling port simultaneously on suction-chamber's housing, also establish an one way stop peturn valve in the water-inlet cavity.

One way stop peturn valve in the water-inlet cavity above-mentioned adopts the spherical valve of no support spring.

For performance parameter is improved, relevant impeller size is changed into diameter 48mm, 56mm, 64mm, and the runner axial cross section amasss the corresponding 114mm that gets ², 110mm ², 110mm ², axial and radial clearance is reduced to 0.04～0.12mm, and the impeller width still is 7mm, and the number of blade is 36.

Accompanying drawing 1. radial section schematic representation of the present utility model

Accompanying drawing 2. axial section schematic representation of the present utility model

Below in conjunction with drawings and Examples the utility model is further described.

As can be seen from the figure, the impeller of peripheral pump (4) is installed on the motor shaft (1) by flat key (6), and adopting therebetween floats cooperates, to prevent the stuck impeller of hard impurity; Axial seal assembly between impeller and the motor (14) can adopt oil sealing (3) to add water-throwing disk (2), also can adopt mechanical sealing, and just adopts " O " RunddichtringO (8) between the pump housing (5) and the protecgulum (9); Protecgulum, the pump housing directly are contained on the motor protecgulum (13) by threaded fastener (10); Equalizing orifice on the impeller (7) has been split into 2 uniform tapped holes, so also is convenient to load and unload impeller; Also adopt threaded fastener (26) to be connected between suction-chamber's housing (11) and the pump housing, be added with sealing gasket (25) therebetween, turnover water pipe joint (20,21) and between suction-chamber's housing, also be added with sealing gasket (19,22); The effect of the honeycomb duct (27) on the pump housing water outlet (29) is that the water, the gas two-phase that make to come out in the pump chamber are separated well, the radial groove that open on its top (23) can be 4, the effect of return port (28) then is that the liquid in the self-priming chamber (24) is got back in the pump chamber, and nationality is to finish the self-priming effect; Pump housing water intake (15) directly communicates with water-inlet cavity (16), one way stop peturn valve (17) in the water-inlet cavity is in order to prevent that self prime pump from refluxing through intake pipe owing to siphonage makes the liquid in the pump chamber when shutting down, safety check is installed on the bottom valve that to exempt intake pipe inlet in the water-inlet cavity, make structure-integratedly, simultaneously the effect of anti-backflow is also better; This safety check in practical has adopted spherical valve, and has cancelled support spring, and spheroid adopts proportion less than 1 material, utilizes buoyancy and pump chamber pressure that ball valve is closed, and the resistance of opening ball valve when making water inlet reduces; For further guaranteeing the non-return effect, establish rubber washer (18) on the fill hose joint.The water filling port (12) set from housing top, suction-chamber adopts screw plug.

Working procedure of the present utility model is as follows: earlier irritate into the water of 120g (or also fill from the suction-chamber can) from water filling port, connect power supply, motor promptly turns round, gas in the pump chamber enters the self-priming chamber with water through pump housing water outlet, spherical valve is opened simultaneously, water is from the intake pipe inspiration, and gas has promptly been arranged in 2 minutes, and water just flows out from outlet pipe continuously; When shutting down, because siphonage, the water in the intake pipe begins to flow backwards, and drives spherical valve and closes, thereby guaranteed that the water in the pump chamber is not drawn out of, and just can continuously fetch water when starting shooting next time again at once.

The micro pump that obtains by above-mentioned design proposal has good self-priming effect, and self-priming degree of vacuum is greater than 7.5 meters, and self-priming time was less than 120 seconds, and the experimental point performance parameter that can realize simultaneously is respectively 9 meters of lifts, 0.55 ton/hour of flow, 60 watts of power; 13 meters of lifts, 0.60 ton/hour of flow, 90 watts of power; 16.5 meters of lifts, 0.65 ton/hour of flow, 120 watts of power.Application area is more extensive, and working medium can be water, light oil, dilute solution etc., and viscosity is not more than 5 ° of E and gets final product.

Claims

1, a kind of self-priming domestic miniature water pump, adopt the single-stage horizontal peripheral pump of rectangular cross-section, double shrouded wheel bilateral limit open type runner, drive with load motor (14), adopt to float between impeller (4) and the axle (1) and cooperate, have equalizing orifice (7) on the impeller, be added with black box (2 between impeller and the motor, 3), between the pump housing (5) and the protecgulum (9) " O " RunddichtringO (8) is housed, it is characterized in that setting up from the suction-chamber (11) above the pump housing, two spaces are arranged in the suction-chamber, the space that connects between fill hose joint (20) and the pump housing water intake (15) is water-inlet cavity (16), the space that connects between titting water outlet (21) and the pump housing water outlet (29) is self-priming chamber (24), also connecting a honeycomb duct (27) on the pump housing water outlet stands upright in the self-priming chamber, honeycomb duct communicates with the self-priming chamber, honeycomb duct top radially slot (23), the other return port (28) that also has of pump housing water outlet is communicated with self-priming chamber and pump chamber, simultaneously on suction-chamber's housing, also establish a water filling port (12), also establish an one way stop peturn valve (17) in the water-inlet cavity.

2, self-priming according to claim 1 domestic miniature water pump is characterized in that one way stop peturn valve in the water-inlet cavity adopts the spherical valve of no support spring.

3, as claim 1,2 described self-priming domestic miniature water pumps, it is characterized in that impeller diameter is respectively 48mm, 56mm, 64mm, the runner axial cross section amasss the corresponding 114mm that gets ², 110mm ², 110mm ², axial and radial clearance is 0.04～0.12mm, impeller width 7mm, 36 of the numbers of blade.