CN202001325U

CN202001325U - Bidirectional submersible axial-flow pump

Info

Publication number: CN202001325U
Application number: CN2010206061947U
Authority: CN
Inventors: 王桂月; 姚孝祥; 陈民
Original assignee: WUXI TIN PUMP MANUFACTURING Co Ltd
Current assignee: Wuxi Liou Tin Pump Manufacturing Co., Ltd.
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2011-10-05
Anticipated expiration: 2020-11-12

Abstract

The utility model discloses a bidirectional submersible axial-flow pump, which comprises an inner cylinder and an outer cylinder. The inner cylinder is equipped with a motor and the left end face of the inner cylinder is connected with a taper pipe. The motor is connected with a main shaft. The main shaft respectively passes through the inner cylinder and the taper pipe. The leftmost end of the main shaft is connected with an impeller. One end of the main shaft is equipped with a mechanical sealing layer and the mechanical sealing layer is arranged between the motor and the impeller. The main shaft is also equipped with a bearing group and the bearing group is arranged between the mechanical seal layer and the motor. A seal sleeve is clamped between the end cap of the bearing group and the taper pipe and the seal sleeve is provided with a port for passing water. The port for passing water is connected with a drainpipe via a connecting tube. The drainpipe respectively passes through the inner cylinder and the outer cylinder. By utilizing the bidirectional submersible axial-flow pump, external water is led to be prevented from entering into the interior of the motor only by the arrangement of the mechanical sealing layer, so that the sealing structure of the bidirectional submersible axial-flow pump is simplified. The bidirectional submersible axial-flow pump is convenient in repairing and maintenance.

Description

Two-way submersible axial flow pump

Technical field

The utility model relates to a kind of submersible axial flow pump of energy way traffic, is mainly used in river regulation.

Background technique

Traditional Submerged Motor Pumps between motor and impeller, often is provided with three road mechanical seals for guaranteeing sealing, prevent that respectively outside water from immersing motor (oil pocket) inside, prevent the interior oil leakage simultaneously, its sealing principle adopts passive " blocking up ", shortcoming is that structure is numerous and diverse, installation, maintenance inconvenience.

Summary of the invention

The utility model is studied and improved at the prior art above shortcomings, and a kind of two-way submersible axial flow pump is provided, and is simple in structure, good sealing effect.

In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:

The utility model comprises inner layer cylinder and outer cylinder, inner layer cylinder is equipped with motor, the left side of inner layer cylinder connects Taper Pipe, motor connects main shaft, main shaft passes inner layer cylinder and Taper Pipe respectively, the high order end of main shaft connects impeller, one mechanical seal of main shaft one end setting, this mechanical seal is installed bearing pack on this main shaft between described motor and impeller, bearing pack is between described mechanical seal and motor, clamping has stuffing box gland between the end cap of bearing pack and the Taper Pipe, have weep hole on the stuffing box gland, weep hole is connected with waste pipe by connecting tube, and waste pipe passes inner layer cylinder and outer cylinder respectively.Bearing pack is made of thrust-bearing and radial bearing, between thrust-bearing and the end cap spring is set.

Technique effect of the present utility model is: prevent that by the mode of dredging outside water from entering motor internal, only one mechanical seal need be set, simplified sealing configuration, be convenient to maintenance and maintenance.

Description of drawings

Fig. 1 is a structural representation of the present utility model, and part is analysed and observe among the figure;

Fig. 2 is the enlarged detail at Figure 1A place;

Embodiment

See Fig. 1, the utility model is made of inner layer cylinder 5 and outer cylinder 3, and motor 4 is installed in the inside of inner layer cylinder 5, and motor 4 connects main shaft 2, and main shaft 2 left ends pass inner layer cylinder 5, Taper Pipe 1, and the high order end of this main shaft 2 connects impeller 6.During the utility model work, be water flow passage between inner layer cylinder 5 and the outer cylinder 3, the described water flow passage of crossing of current process under the effect of impeller 6.

See Fig. 1, Fig. 2, between impeller 6 and the motor 4 mechanical seal is set, described mechanical seal has rubber seal 14 that is installed on the main shaft 2 and skeleton 19 formations that are connected with Taper Pipe 1.Above-mentioned mechanical seal is prior art, in order to ensure preventing that outside water from entering the inside of motor 4, generally adopts the above aforementioned mechanical seal of twice, and structure is loaded down with trivial details, inconvenient maintenance.The utility model is provided with cavity 13 on the mechanical seal right side, specifically be constructed as follows: see Fig. 2, the left end setting of motor 4 is by the bearing pack that is installed on the main shaft 2, described bearing pack is by thrust-bearing 15, radial bearing 16 and end cap 20 are formed, the left side of inner layer cylinder 5 is connected and fixed the collar 8, retaining collar 8 connects clamping sleeve 18 by bolt 7, clamping sleeve 18 is connected with the left side of Taper Pipe 1, seal ring 17 is clamped between clamping sleeve 18 and the end cap 20, sealing bad 17 and clamping sleeve 18 and end cap 20 drive fits, then aforementioned mechanical seal and Taper Pipe 1, seal ring 17, clamping sleeve 18 and main shaft 2 common formation cavitys 13.Have weep hole 12 on the seal ring 17, weep hole 12 is connected with waste pipe 10 on being arranged on outer cylinder 3 by connecting tube 11.Aforementioned structure adopts the mode of dredging to prevent that outside water from entering the inside of motor 4, aforementioned mechanical seal can prevent substantially that outside water from entering inner layer cylinder 5, remain a spot of water and enter cavity 13 after by mechanical seal, drainage channel by constituting then by weep hole 12, connecting tube 11 and waste pipe 10, dredge to outer cylinder 3 outsides, so can guarantee the waterproof of motor 4.

See Fig. 2, between the both sides end face of thrust-bearing 15 and end cap 20 spring 9 is set, make thrust-bearing 15 can adapt to the machining error of end cap 20.

Claims

1. two-way submersible axial flow pump, comprise inner layer cylinder and outer cylinder, described inner layer cylinder is equipped with motor, the left side of described inner layer cylinder connects Taper Pipe, described motor connects main shaft, described main shaft passes inner layer cylinder and Taper Pipe respectively, the high order end of described main shaft connects impeller, it is characterized in that one mechanical seal of described main shaft one end setting, this mechanical seal is between described motor and impeller, on this main shaft bearing pack is installed, described bearing pack is between described mechanical seal and motor, and clamping has stuffing box gland between the end cap of described bearing pack and the Taper Pipe, has weep hole on the described stuffing box gland, described weep hole is connected with waste pipe by connecting tube, and described waste pipe passes inner layer cylinder and outer cylinder respectively.

2. two-way submersible axial flow pump according to claim 1, described bearing pack is made of thrust-bearing and radial bearing, it is characterized in that between described thrust-bearing and the end cap spring being set.