CN2236033Y

CN2236033Y - Centrifugal pump structure

Info

Publication number: CN2236033Y
Application number: CN 95243676
Authority: CN
Inventors: 陈和祺
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-30
Filing date: 1995-03-30
Publication date: 1996-09-25
Anticipated expiration: 2005-03-30

Abstract

The utility model relates to a centrifugal pump structure, which is characterized in that each part contacting with water of a motor, impellers, a flow guiding cover sheet and an outer housing are all provided with watertight fittings; the utility model adopts a structure that a water inlet chamber is interpenetrated with a water outlet chamber through a water storage chamber; the two impellers are respectively arranged in the inner cavities of the water inlet and outlet chambers to form a sectional type water inlet and outlet actions; in addition, the in-out water stream are not interfered, so that to enhance the water outlet pressure. Compared with the traditional single water in-out centrifugal pump, the utility model provides a better water pumping stroke, and solves the trouble of not enough water pressure or water delivery at a higher place.

Description

The centrifugal pump new structure

The utility model relates to a kind of radial fluid pump, particularly a kind of multistage centrifugal pump.

Existing centrifugal pump, as shown in Figure 1, mainly drive an impeller 12 high speed rotating with motor 10, impeller 12 produces suction to extract the water of outside line pipeline (as tap water pipe line), when water after intake pipe 14 enters, effect commentaries on classics by impeller 12 is delivered to interior lines pipeline (being the water pipeline) for use by outlet pipe 15, but the action of drawing water of this structure is drawn water for promptly advancing the single-stage that promptly goes out, inflow is limited, hydraulic head is not high, cause its water delivery effect very limited, can't solve the water puzzlement of hydraulic head deficiency.

The purpose of this utility model is that a kind of improved centrifugal pump structure will be provided, and it obtains to promote water outlet hydraulic pressure with simple structure, improves delivery stroke.

The utility model is achieved in that the water conservancy diversion cover plate of centrifugal pump fits into water cover sheet and motor and is stretched on outer shaft extension and separates and constitute an intake chamber and a water-supplying chamber, water conservancy diversion cover plate inner chamber is separated out a water chamber with baffle region, advance, interpenetrate between water-supplying chamber and water chamber, advance, water-supplying chamber is mat frame and outside line pipeline or the connection of interior lines pipeline respectively, two impellers place respectively into, water-supplying chamber's inner chamber, and articulate with the shaft extension of motor, between water conservancy diversion cover plate and motor, motor shaft extension position between frame and water conservancy diversion cover plate and between two impellers, all establish watertight fitting, ooze out or infiltrate motor interior with waterproof, during operation, motor drives two impellers are made high speed rotating, the water inlet impeller of intake chamber extracts water to intake chamber from the outside line pipeline, then enter water chamber, again by water-supplying chamber go out water impeller with water from water chamber suction water-supplying chamber, after transfer to the interior lines pipeline.

The utility model is controlled the water-in and water-out action respectively with two impellers, separate with a water chamber between the two, the water-in and water-out action is not interfered with each other, thereby form indirection type two stage pump water, owing to the effect of water chamber is promoted its water outlet hydraulic pressure, its delivery stroke can obtain enhancement, can improve to the water output of high building resident family, thereby solve the not enough and anhydrous available problem of hydraulic pressure.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the structural representation of conventional centrifugal pump.

Fig. 2 surveys outline drawing according to the centrifugal pump new structure axle that the utility model proposes.

Fig. 3 is the axonometric exploded view of Fig. 2 structure.

Fig. 4 is the cross-sectional schematic of Fig. 2 structure.

With reference to Fig. 2,3,4, pump is provided with two impellers 30,31, impeller 30,31 by two circular

lamellar bodies

32,33 insert and put blade 38 forms, lamellar body 32 centers are established an axis hole 34 and are articulated with motor 20 shaft extensions 21, axis hole 34 1 sides are established a through hole 35 in addition, lamellar body 33 center portions form the slotted eye 36 of a larger aperture, slotted eye 36 peripheries form the flange of establishing to evagination 37, blade 38 is regularly arranged two lamellar bodies 32 that are fixedly arranged on, 33 peripheries, mat two lamellar bodies 32, form suitable water space capacity between 33, each blade 38 all is bent into suitable radian, when two impellers 30, during 31 rotations, current can be discharged along blade 38; Water conservancy diversion cover plate 40 is a housing type structure, the shaft extension 21 of center portion tool one through hole 41 power supply motivations 20 is passed through, water conservancy diversion cover plate 40 inner chambers constitute water chamber 49 with dividing plate 42, form several water inlets 43 and be the guide plate 44 outwards opened in the water conservancy diversion cover plate 40 leading edge face periphery punching out of 49 of intake chamber 47 and water chambers the two connection, water-supplying chamber 48 connects with the through hole that water chamber 49 is passed by water conservancy diversion cover plate 40 inner chamber dividing plates 42 power supply motivations 20, the lateral margin punching out of water-supplying chamber's 48 water conservancy diversion cover plates 40 form several osculums 45 and in guide plate 46, connect the outlet pipe 62 and the water-supplying chamber 48 of frame 60, by different

shape guide plate

44,46 cooperate two impellers 30,31, and make it just be positioned at two impellers 30,31 periphery, thus leading into or deriving of water controlled; Water inlet cover plate 50 is to cooperate the water inlet form of water conservancy diversion cover plate 40 and frame 60 and design, its internal diameter just and the leading edge of water conservancy diversion cover plate 40 cover and be closed state and form intake chamber 47, be that 47 of water-supplying chamber 48 and intake chambers separate water chamber 49, the prominent forward prominent pipe 51 of establishing of the feed-water end of the corresponding frame 60 in the leading edge center portion of intake chamber 48, the intake pipe 61 corresponding fits of prominent pipe 51 and frame 60 feed-water ends; After the structure of frame 60 covers itself and motor 20, be able to form a containing space to hold water conservancy diversion cover plate 40 and the water inlet cover plate 50 behind the fit, the feed-water end of corresponding water inlet cover plate 51 prominent pipes 51 is established a L type intake pipe 61 in frame 60 leading edge center portions, in order to external outside line pipeline, the upper limb position of corresponding water conservancy diversion cover plate 40 osculums 45 is then with an outlet pipe 62 external interior lines pipelines.

When above-mentioned member assembles, shaft extension 21 with motor 20 is nested with the external diameter dividing plate 401 identical with water conservancy diversion cover plate 40 internal diameters earlier, again impeller 31 is installed on the shaft extension 21 of motor 20, its assembling condition is, the lamellar body 33 of flanged pin 37 is put inwardly, and make elastic washer 22 fits on the shaft extension 21 of its flange 37 and motor 20 be the watertight state, then make water conservancy diversion cover plate 40 be covered on motor 20, impeller 31 is placed in the water-supplying chamber 48 of water conservancy

diversion cover plate

40 and 20 formation of motor, outside the through hole 41 of the shaft extension 21 of motor 20 by fairing cap 40 is stretched on, establishing rubber washer 23 at the junction plane of motor 20 outer walls and water conservancy diversion cover plate 40 in addition cooperates dividing plate 401 to form the watertight state, the back in motor 20 shaft extensions 21 sheathed sleeve pipes 24 to block the shaft extension 21 that water infiltrates motor 20, the shaft extension 21 that again another impeller 30 is installed on motor 20 is also fixing, its assembling condition is that the lamellar body 33 of flanged pin 37 is put outwardly, the cover plate 50 of then will intaking is covered on water conservancy diversion cover plate leading edge, impeller 30 is placed in the intake chamber 47 that itself and water conservancy diversion cover plate 40 form, and make impeller 30 center flange 37 correspondences be contained in into prominent pipe 51 inner edges of water cover plate 50, at last frame 60 is overlying on water conservancy diversion cover plate 40 and water inlet cover plate 50 peripheral and and motor 20 in conjunction with fixing, the junction plane of water conservancy diversion cover plate 40 constitutes the watertight state by a rubber washer 25, seals with a packing ring 26 at the interface of intake pipe 61 with water inlet cover plate 50 prominent pipes 51; By this, the action of pump is to drive two impellers 30 with

motor

20,31 high speed rotating, with the impeller 30 in the intake chamber 47 with the water of outside line pipeline through intake pipe 61 suction intake chambers 47, the effect of outer guide plate 44 of mat water conservancy diversion cover plate 40 leading edge faces, water is imported water chamber 49 by water inlet 43, then the suction that produces by impeller 31 rotation of water-supplying chamber 48 with the water in the water chamber 49 by the through hole 35 suction water-supplying chamber of impeller 31 central shaft holes one side and promote hydraulic pressure, the guide plate of opening in mat water conservancy diversion cover plate 40 lateral margins 46 is derived water by osculum 45 simultaneously, is delivered to the interior lines pipeline for the user through outlet pipe 62.

Claims

1, a kind of by motor (20), motor shaft extension (21), impeller (30,31), water conservancy diversion cover plate (40), the centrifugal pump new structure that water inlet cover plate (50) and frame (60) are formed, it is characterized in that water conservancy diversion cover plate (40) fits into water cover sheet (50) and motor (20) and is stretched on outer shaft extension (21) and separates and constitute an intake chamber (47) and a water-supplying chamber (48), water conservancy diversion cover plate (40) inner chamber separates out a water chamber (49) with dividing plate (42), advance, water-supplying chamber (47,48) and between water chamber (49) interpenetrate, two impellers (30,31) place respectively into, water-supplying chamber (47,48) inner chamber and articulate with the shaft extension (21) of motor (20), between water conservancy diversion cover plate (40) and motor (20), between frame (60) and water conservancy diversion cover plate (40) and two impellers (30,31) watertight fitting is all established at motor shaft extension (21) position between.

2, centrifugal pump new structure according to claim 1, it is characterized in that two impellers (30,31) by two circular lamellar bodies (32,33) inserting and putting blade (38) forms, lamellar body (32) center is established axis hole (34) and is articulated with motor shaft extension (21), axis hole (34) one sides are established a through hole (35), the center portion of another lamellar body (33) forms the slotted eye (36) in a bigger aperture, slotted eye (36) periphery forms the flange of establishing to evagination (37), two lamellar bodies (32,33) blade that inserts and puts between (38) is regularly arranged two lamellar bodies (32 that are fixedly arranged on, 33) periphery, each blade (38) all is bent into radian.

3, centrifugal pump new structure according to claim 1 and 2, it is characterized in that water conservancy diversion cover plate (40) is a housing type, center portion tool one through hole (41), water conservancy diversion cover plate (40) inner chamber constitutes water chamber (49) with dividing plate (42), water conservancy diversion cover plate (40) leading edge face periphery several water inlets of punching out formation (43) between intake chamber (47) and water chamber (49) and be the guide plate of outwards opening (44), the lateral margin punching out of water-supplying chamber (48) water conservancy diversion cover plate (40) form several osculums (45) and in guide plate (46), by different shape guide plate (44,46) cooperate two impellers (30,31) also just be positioned at two impellers (30,31) periphery.

4, centrifugal pump new structure according to claim 1 and 2, it is characterized in that intake chamber (47) covers the back by water conservancy diversion cover plate (40) and water inlet cover plate (50) and constitutes, water-supplying chamber (48) covers the back by water conservancy diversion cover plate (40) and motor (20) and constitutes, separate water chamber (49) between intake chamber (47) and water-supplying chamber (48), the prominent pipe (51) that is formed centrally in intake chamber (47) and outside line pipeline connection mat water inlet cover plate (50) leading edge and intake pipe (61) fit of frame (60), intake chamber (47) is connected by several water inlets (43) of water conservancy diversion cover plate (40) leading edge punching out with water chamber (49), water-supplying chamber (48) is connected by the empty through hole of crossing of water conservancy diversion cover plate (40) inner chamber dividing plate (42) power supply motivation (20) with water chamber (49), and water-supplying chamber (48) is connected the outlet pipe (62) of frame (60) by the osculum (45) of the lateral margin punching out of water conservancy diversion cover plate (40).