CN2462110Y

CN2462110Y - Multi-stage centrifugal water pump

Info

Publication number: CN2462110Y
Application number: CN 00263883
Authority: CN
Inventors: 张志频
Original assignee: BOSHITONG GROUP CO LTD GUANGXI
Current assignee: BOSHITONG GROUP CO LTD GUANGXI
Priority date: 2000-11-28
Filing date: 2000-11-28
Publication date: 2001-11-28
Anticipated expiration: 2010-11-28

Abstract

The utility model belongs to a vertical or horizontal multi-stage centrifugal water pump which is mainly composed of a water inlet section, a sliding bearing, a middle section, a guide vane, a blade wheel, a final-section blade wheel, a final-stage guide vane, a water outlet section, a supporting seat, a motor connecting seat, a coupling, an axis, a motor, an angular contact bearing, a sealing sleeve, a convex balancing drum which is provided with a circular groove, and a labyrinth type backwater decompression balancing device which is composed of a balancing drum cover of the annular groove which is loosely engaged with the circular groove. The utility model has the characteristics of balanceable axial force, reduced useless apply work of the water pump, reduced energy consumption, and the increased work efficiency of the water pump.

Description

Multi-stage centrifugal pump

The utility model belongs to a kind of vertical or horizontal multi-stage centrifugal water pump.

Present widely used vertical or horizontal multi-stage centrifugal water pump, the backwater pressure release Equilibrator that they adopt is a straight type balancing drum, there is not the balancing drum lid, though axial force balance, but the backwater amount of centrifugal water pump is bigger, reach about 25%, the working efficiency of centrifugal water pump is reduced.

The purpose of this utility model provides the maze type backwater pressure release that a kind of employing is made up of convex balancing drum and balancing drum lid

Capable of reducing energy consumption, the vertical or horizontal multi-stage centrifugal water pump of increasing work efficiency of Equilibrator.

The utility model mainly is made of inlet segment, sliding bearing, stage casing, stator, impeller, latter end impeller, final stage stator, water exit end, bearing, motor connection seat, coupling, axle, motor, angular contact bearing, stuffing box gland, maze type backwater pressure release Equilibrator, the drain water circuit be made up of balancing drum lid and the loosening interlock of convex balancing drum of being fixed on the axle of being fixed on the water section.

Below in conjunction with accompanying drawing description is made in enforcement of the present utility model.

Fig. 1 is a structural representation sectional view of the present utility model.

Fig. 2 is the structural representation cutaway view Amplified image of balancing drum lid among the utility model Fig. 1.

Fig. 3 is the structural representation cutaway view Amplified image of the utility model Fig. 1 camber balancing drum.

According to Fig. 1, Fig. 2, shown in Figure 3, the utility model is mainly by the inlet segment 1 that is provided with water inlet 3, water sucting cavity 26 etc., sliding bearing 2, stage casing 4, stator 5, impeller 6, latter end impeller 7, final stage stator 8, the water exit end 10 that is provided with water outlet 9, bearing 11, motor connection seat 12, coupling 13, axle 24, motor 14, angular contact bearing 15, stuffing box gland 16, be made of convex balancing drum 22 and balancing drum lid 18 maze type backwater pressure release Equilibrator 17, the drain water circuits of forming 25; Convex balancing drum 22 wherein is provided with an annular tongue 21 at its end dome face that rouses, and balancing drum lid 18 is provided with and annular tongue 21 corresponding annular grooves 19 in its bottom surface, annular tongue 21 and the monolateral between the two certain clearance that all remains with of annular groove 19.Impeller 6, impeller 7, convex balancing drum 22, stuffing box gland 16 and bearing 15 fixedly are assembled on the axle 24, become the rotating component of pump, and connect with motor 14 by coupling 13, balancing drum lid 18 is fixed by bolts on the water exit end 10, balancing drum lid 18 be fixed in axle 24 on convex balancing drum 22 and the seal ring combine and assemble of necessity become maze type backwater pressure release Equilibrator 17.After convex balancing drum 22 installs with axle 24, adorn water exit end 10, final stage stator successively with not level impeller 7. stage casings 4, stator 5, impeller 6, and install all relevant other component on the axle 24, install inlet segment 1 then, balancing drum lid 18, stuffing box gland 16, bearing 11, angular contact bearing 15, motor connection seat 12, coupling 13, motor 14 or the like are gone up in fixed installation successively conversely, and drain water circuit 25 is gone up in assembling at last.Maze type backwater pressure release Equilibrator 17 after the assembling, wherein the dome face annular tongue 21 that is provided with in 22 end of convex balancing drum covers the loosening mutually interlock of annular groove 19 that 18 bottom surfaces are provided with balancing drum, and the monolateral certain clearance that all remains with, convex balancing drum 22 is with axle 24 rotations, and balancing drum lid 18 is fixed on the water exit end 10 and does not rotate.Along with the starting of motor 14, by coupling 13 rotatingshafts 24, the impeller 7 on the axle 24 waits all component high speed rotating, water enters into water sucting cavity 26 from water inlet 3, enter impeller 6 and impeller 7 again, make water obtain energy, become press water and flow out from water outlet 9.Under the high speed rotating of impeller 7, make water obtain energy, improved pressure, just because of the pressure difference that impeller water inlet at different levels and water outlet occur makes impeller at different levels 7 all produce an axial force to the water sucking mouth direction.Adopt maze type backwater pressure release Equilibrator 17, axial force is balance more, and water enters pressure-releasing chamber 20 and will change 6 an angle of 90 degrees and just can enter, the mobile distance of water is strengthened, because the high speed rotating of convex balancing drum Asia, the resistance that makes water enter into pressure-releasing chamber 20 strengthens, the water yield that enters pressure-releasing chamber 20 in this case seldom, reduce the useless acting of water pump, cut down the consumption of energy, improved the working efficiency of water pump.

Claims

1. one kind mainly by the inlet segment (1) that is provided with water inlet (3) and water sucting cavity (26) etc., sliding bearing (2), stage casing (4), stator (5), impeller (6), latter end impeller (7), final stage stator (8), be provided with the water exit end (10) of water outlet (9), bearing (11), motor connection seat (12), coupling (13), axle (24), motor (14), angular contact bearing (15), stuffing box gland (16), multi-stage centrifugal pump as the straight type balancing drum of Equilibrator constitutes is characterized in that forming maze type backwater pressure release Equilibrator (17) by the balancing drum lid (18) that is fixed on the water exit end (10) with the loosening interlock of convex balancing drum (22) of being fixed on the axle (24).

2. multi-stage centrifugal pump according to claim 1 is characterized in that convex balancing drum (22) end dome face is provided with an annular tongue (21).

3. multi-stage centrifugal pump according to claim 1 is characterized in that the bottom surface of covering (18) at balancing drum is provided with the annular groove (19) that becomes flexible interlock with annular tongue (21) mutually.