CN210371200U

CN210371200U - Cantilever type structure drain pump

Info

Publication number: CN210371200U
Application number: CN201920975336.8U
Authority: CN
Inventors: 黄建平; 力刚; 张强; 翟家骏; 周业龙; 刘爱明; 杭丹; 张垚宾; 李磊; 张少波
Original assignee: Changsha Dewater Mechanical Technology Co ltd
Current assignee: Changsha Dewater Mechanical Technology Co ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-04-21
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to a cantilever type structure drain pump, be fixed with including impeller, motor, inside the motor frame, the section of intaking, guide vane body and the play water section of motor, be equipped with the through-hole of water part between motor frame and the motor, the section of intaking, guide vane body, motor frame and play water section connect gradually, the one end of the motor shaft of motor is passed in proper order motor, guide vane body and impeller, the impeller is fixed on the motor shaft, the motor shaft is cantilever type structure, the impeller set up in the section of intaking, just the outer circumference of impeller with there is the clearance between the inner wall of the section of intaking. This drain pump has solved the not thorough defect of drainage through adopting the cantilever type structure of water passing part to make rivers flow through motor casing frame, take away the motor heat, improve the motor heat-sinking capability, solve the problem that permanent-magnet machine generates heat easily.

Description

Cantilever type structure drain pump

Technical Field

The utility model relates to a water pump technical field, more specifically relates to a cantilever type structure drain pump.

Background

For municipal drainage emergency treatment, the drainage height of a drainage pump is required to be lower as much as possible, particularly for road accumulated water drainage, the water level is required to be guaranteed to be below the normal traffic requirement of a vehicle, the conventional drainage pump has higher requirement on the drainage height of the water pump due to structural limitation, the requirement for thoroughly discharging water at a low water level cannot be met, and the portable drainage pump is poor in heat dissipation performance, so that the drainage pump with thorough drainage and heat dissipation is urgently required to be designed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Therefore, it is necessary to provide a cantilever drain pump to overcome the disadvantages of incomplete drainage and heat dissipation. This drain pump has solved the incomplete defect of drainage through adopting the cantilever type structure that has water passing parts such as through-hole to make rivers flow through motor casing frame, take away the motor heat, improve the motor heat-sinking capability, solve the problem that permanent-magnet machine generates heat easily.

(II) technical scheme

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a cantilever type structure drain pump, the drain pump includes impeller, motor, inside is fixed with the motor frame, the section of intaking, guide vane body and the play water section of motor, be equipped with the through-hole of water part between motor frame and the motor, the section of intaking, guide vane body, motor frame and play water section connect gradually, the one end of the motor shaft of motor passes in proper order motor, guide vane body and impeller, the impeller is fixed on the motor shaft, the motor shaft is cantilever type structure, the impeller set up in the section of intaking, just the outer circumference of impeller with there is the clearance between the inner wall of the section of intaking, the rivers are followed the section of intaking gets into, follows behind the through-hole in guide vane body, the motor frame in proper order go out the water section and flow direction is the same.

Furthermore, a reinforcing rib arranged along the axial direction of the motor shaft is arranged between the motor and the motor base so as to fix and support the motor.

Furthermore, the reinforcing ribs are four lamellar reinforcing ribs, and the four lamellar reinforcing ribs are arranged at equal intervals along the radial direction of the motor shaft.

Furthermore, the drainage pump also comprises a front bearing seat and a rear bearing seat which are arranged in the motor base, and the front bearing seat and the rear bearing seat are respectively and fixedly connected with the two ends of the motor through bolts.

Furthermore, a fixed oil cavity and an oil filling hole which is communicated with the oil cavity and the outside are arranged in the guide vane body.

Furthermore, the drainage pump also comprises a mechanical seal gland arranged in the oil cavity, and the guide vane body is connected with the front bearing seat through the mechanical seal gland.

Furthermore, a sealing element is arranged between the mechanical seal gland and the motor shaft, and a sealing element is arranged between the guide vane body and the motor shaft.

Further, the cantilever-type structure drainage pump is a portable drainage emergency pump.

Furthermore, the water inlet interface of the water inlet section and the water outlet interface of the water outlet section can be connected in a seamless mode.

Furthermore, the water inlet section, the guide vane body, the motor base and the water outlet section which are connected in sequence are fixedly connected through an external bolt structure.

(III) advantageous effects

Compared with the prior art, the utility model has the advantages of: the utility model provides a cantilever type structure drain pump is small-size cantilever type structure drainage emergency pump, can conveniently remove, has portable characteristics, and its motor shaft is cantilever type structural design, reduces motor operating temperature through the rivers of motor both sides when simplifying the water pump structure, has improved product reliability, and has prolonged product life; in addition, the water pump inlet is positioned at the end part of the water pump, so that the submergence depth of the water pump can be reduced by water inflow from the end part, the water pump can normally work when the water level is low, the problem that the water pump with low water level cannot normally operate in the past is solved, and the water pump is particularly suitable for road drainage occasions. Under special conditions, the inlets and the outlets of a plurality of portable cantilever-type structure drainage pumps can be connected in series to carry out combined drainage so as to improve the drainage power.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:

fig. 1 is a side sectional view of a middle cantilever type drain pump according to the present invention;

fig. 2 is a partially enlarged three-dimensional perspective sectional view of fig. 1.

Description of reference numerals:

1. the water-saving device comprises a guide vane body, 2, an impeller, 3, a mechanical seal gland, 4, a water inlet section, 5, a motor shaft, 6, a motor, 7, a sealing element, 8, a water outlet section, 9, a motor base, 10 and an oil injection hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

As shown in fig. 1, the utility model discloses a cantilever type structure drain pump, motor frame 9, the section of intaking 4, the guide vane body 1, the play water section 8 that are fixed with motor 6 including impeller 2, motor 6, inside, have the through-hole of water passing part between motor frame 9 and the motor 6, the section of intaking 4, the guide vane body 1, motor frame 9, the play water section 8 four connect gradually, motor shaft 5 of motor 6 passes in proper order impeller 2, guide vane body 1 and motor 6, impeller 2 fixes on motor shaft 5 of motor 6, motor shaft 5 of motor 2 is cantilever type structure, impeller 2 arranges in the section of intaking 4, just impeller 2's outer circumference with there is the clearance between the inner wall of the section of intaking 4. The water flow enters from the water inlet section 4 and flows out from the water outlet section 8 through the guide vane body 1 and the motor base 9, and the water flow directions are the same and are the same.

Further, as shown in fig. 1, the motor 6 with the body housing and the motor base 9 can be connected and fixed by the reinforcing ribs arranged along the axial direction, the body housing and the motor base 9 on the motor 6 can be arranged integrally or separately, and can be connected and fixed by bolts when being arranged separately; in addition, the reinforcing ribs are four lamellar reinforcing ribs which are arranged along the radial direction at equal intervals, namely, every two adjacent reinforcing ribs are vertical to each other, the reinforcing ribs are made of high-pressure-resistant corrosion-resistant high-strength materials, so that a supporting seat is formed and the motor 6 is effectively fixed and supported, in addition, through holes with water passing parts are formed among the reinforcing ribs, the through holes allow water to flow out from the guide vane body 1 to the water outlet section 8, and the reinforcing ribs can be integrally arranged with the inner cavity of the motor base 9.

Further, the cantilever-type drain pump may further include a front bearing seat and a rear bearing seat disposed in the motor base 9, and the front bearing seat and the rear bearing seat, which are equipped with the steel balls, are respectively and fixedly connected to two ends of the motor 6 through bolts, so that two ends of the motor shaft 9 freely rotate relative to the front bearing seat and the rear bearing seat.

Further, as shown in fig. 2, the vane body 1 is an irregular integral three-dimensional structure (parts such as a reinforcing rib in the motor base and a vane on the impeller are omitted in fig. 2), a fixed oil chamber is arranged in the vane body 1, the shells of the vane body 1 of the oil chamber are integrally and fixedly supported through a support plate or a support hole which is installed by a thin leather sheet, and water flow can not be influenced to flow through the inside of the vane body 1 and the periphery of the oil chamber, and in addition, an oil filling hole 10 which is connected with the oil chamber and the outside at the same time is arranged on the vane body 1 (since the oil filling hole 10 is already shown in fig. 1, the position and the structure of the oil filling hole are sufficiently understood, so that the parts are omitted in fig. 2).

Further, the right end of the oil cavity is connected with the motor 6 through a mechanical seal gland 3, specifically, the right end of the oil cavity of the guide vane body 1 is connected with the mechanical seal gland 3 in a clamping manner, a front bearing seat can be installed in a groove on the right end face of the mechanical seal gland 3, in order to realize the sealing performance of the motor shaft, sealing elements 7 can be further arranged in the oil cavity, the sealing elements 7 are divided into two groups, each group of sealing elements 7 comprises components such as an annular sealing ring and a spring, one group of sealing elements 7 can be arranged in a groove on the left end face of the oil cavity of the guide vane body 1 (namely, the sealing element 7 is arranged between the guide vane body 1 and the motor shaft 5), and the other group of sealing elements 7 can be arranged in a groove on the left end face of the mechanical; therefore, the sealing element 7 can be used for realizing the sealing between the motor shaft 5 and the guide vane body 1 and the sealing between the motor shaft 5 and the mechanical sealing cover 3, and the real-time rotation of the motor shaft 5 is not influenced. Furthermore, as shown in fig. 1-2, the impeller 2 is located within the water intake section 4 and is not connected to other components except for the motor shaft 5.

Furthermore, the motor 5 adopts a permanent magnet variable frequency motor, so that the weight of the water pump is reduced to the maximum extent, and the portable characteristic of quick movement is achieved. In addition, water pump water inlet interface and delivery port interface each other are supporting uses, can carry out the seamless cooperation connection of grafting mode or block mode between the water inlet interface of the section of intaking 4 promptly and the delivery port interface of play water section 8 for can realize establishing ties between two pumps and use, first pump export can pass through the quick butt joint of clamp with second pump import, can satisfy multiple operating mode requirement and use. In addition, in order to improve the disturbance degree of a motor shaft of the water pump and reduce abrasion caused by the high-speed rotating impeller and the guide vane body, the motor shaft is made of high-strength materials and structurally designed, and abrasion of the water pump is further reduced.

Further, as shown in fig. 1, the water inlet section 4, the guide vane body 1, the motor base 9, and the water outlet section 8 may be sequentially connected by an external bolt structure. And the cantilever-type structure drainage pump is preferably a portable small-sized cantilever-type structure drainage emergency pump, so that the portable small-sized cantilever-type structure drainage emergency pump is convenient to carry and move.

The utility model discloses the assembly order of drainage pump does: 1. the water outlet section 8 with the hemispherical structure is propped against one end of the motor shaft 5 and a flange on a shell of the motor 6 and is connected and fastened by bolts, and the tail end of a motor base 9 with a water passing part outside the motor 6 is also connected and fastened with the water outlet section 8 by external bolts; 2. The sealing element 7 penetrates through the other end of the motor shaft 5 so as to be matched and connected with a mechanical sealing gland 3 connected with a motor bearing, and oil can be injected into an internal oil cavity through an oil injection hole 10 on the guide vane body 1, so that the end part of the motor shaft is lubricated, cooled and sealed; 3. the guide vane body 1 penetrates through the other end of the motor shaft 5 and is connected and fastened with a motor base 9 with a water passing part outside the motor 6 through a bolt; 4. the impeller 2 is fixedly connected with a motor shaft 5; 5. and the water inlet section 4 penetrates through the impeller 2 and is connected and fixed with the guide vane body 1 through a bolt.

The working principle of the pump is as follows: firstly submerging the water pump in water, connecting a water pump cable and electrifying, sucking water from the water inlet section 4 at the left side of the figure 1, discharging the water from the water outlet section 8 at the right side of the figure 1, specifically, making a high-speed rotation motion of the impeller in the pump body, throwing the water in the pump body out at the water outlet section 8 under the action of centrifugal force along with the rotation of the impeller, gradually slowing the speed of the thrown water in the guide vane body 1 and the motor base 9, forming a vacuum low-pressure area at the center of the impeller after the water is thrown out, and making the water in the water pool flow into the water pump through the water inlet section 4 under the action of external atmospheric pressure. Because the volume of the pump body diffusion chamber formed by the guide vane body 1 and the motor base 9 is certain, the pressure is gradually increased along with the increase of the thrown water, and finally the water is discharged from the water outlet section 8 of the water pump. The water is thus continuously drawn up from the basin and then continuously discharged from the outlet section 8.

The utility model provides a cantilever type structure drain pump is the drainage emergency pump of small-size cantilever type structure, can conveniently remove, has portable characteristics. This drain pump has solved the incomplete defect of drainage through adopting the inside cantilever type structure of crossing water part of tape unit seat to make rivers flow through motor casing frame, take away the motor heat, improve motor heat-sinking capability, solve the problem that permanent-magnet machine generates heat easily. Under special conditions, the head and tail inlets and outlets of a plurality of portable cantilever-type structure drainage pumps can be connected in series for combined drainage, so that the drainage power is improved.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. The utility model provides a cantilever type structure drain pump, its characterized in that, the drain pump includes impeller, motor, inside is fixed with the motor frame, the section of intaking, guide vane body and the play water section of motor, be equipped with the through-hole of water part between motor frame and the motor, the section of intaking, guide vane body, motor frame and play water section connect gradually, the one end of the motor shaft of motor passes motor, guide vane body and impeller in proper order, the impeller is fixed on the motor shaft, the motor shaft is cantilever type structure, the impeller set up in the section of intaking, just the outer circumference of impeller with there is the clearance between the inner wall of the section of intaking, the rivers follow the section of intaking gets into, loops through behind the through-hole in guide vane body, the motor frame the play water section flows out.

2. The drain pump of claim 1, wherein a rib is disposed between the motor and the motor base along an axial direction of the motor shaft for fixing and supporting.

3. The drain pump of claim 2, wherein the ribs are four lamellar ribs, and the four lamellar ribs are equally spaced in a radial direction of the motor shaft.

4. The drain pump of claim 1, further comprising a front bearing block and a rear bearing block disposed in the motor housing, wherein the front bearing block and the rear bearing block are respectively fixedly connected to both ends of the motor by bolts.

5. A drain pump according to claim 4, wherein the vane body is provided with a fixed oil chamber and an oil filler hole communicating with both the oil chamber and the outside.

6. The sump pump of claim 5, further comprising a mechanical seal cover disposed within the oil cavity, wherein the vane guide is coupled to the front bearing block via the mechanical seal cover.

7. The sump pump of claim 6, wherein a seal is disposed between the machine seal cover and the motor shaft, and a seal is disposed between the vane guide and the motor shaft.

8. The sump pump of claim 1, wherein the cantilevered sump pump is a portable sump emergency pump.

9. The drain pump of claim 1 or 8, wherein the water inlet port of the water inlet section and the water outlet port of the water outlet section are seamlessly connectable.

10. The drainage pump of claim 1, 2, 4 or 8, wherein the water inlet section, the vane guide body, the motor base and the water outlet section which are connected in sequence are fixedly connected through an external bolt structure.