CN114658668B

CN114658668B - Submersible through-flow pump

Info

Publication number: CN114658668B
Application number: CN202210436914.7A
Authority: CN
Inventors: 张伟进; 金雷; 宋飞; 宋天涯; 赵海; 任红松; 陈波波; 孔令杰; 李晓龙; 徐宇翔
Original assignee: Hefei Hengda Jianghai Pump Co Ltd
Current assignee: Hefei Hengda Jianghai Pump Co Ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2023-07-07
Anticipated expiration: 2042-04-15
Also published as: CN114658668A

Abstract

The invention discloses a submersible through-flow pump, and belongs to the field of pumps. A submersible through-flow pump comprising: the device comprises a shell, a motor and a pump head, wherein the motor and the pump head are arranged in the shell, and an impeller assembly is fixedly arranged on the pump head; the pump head is detachably and fixedly connected with a pump shaft, one side of the pump shaft is provided with a gear reduction box, the pump shaft is in transmission connection with one end of the gear reduction box, the motor is arranged on the other side of the gear reduction box, a main shaft of the gear reduction box is coaxially arranged with a motor shaft of the motor, a plurality of connecting sleeves are arranged between the motor shaft and the main shaft, the connecting sleeve is provided with a plurality of through holes, the outer wall of the motor shaft and the outer wall of the main shaft are provided with a plurality of pin holes, the through holes are internally provided with positioning pins, the positioning pins are inserted into the pin holes through the through holes, a connecting body is arranged between the gear reduction box and the motor, and the connecting body surrounds the outer side of the motor shaft.

Description

Submersible through-flow pump

Technical Field

The invention relates to the field of pumps, in particular to a submersible through-flow pump.

Background

The submerged through-flow pump is a water pump type widely applied to large and medium-sized water drainage, running water, regional water regulation and other projects in recent years, mainly comprises a pump head, a planetary gear reduction box, a submerged machine motor, a through-flow cylinder and the like, has the characteristics of simple and straight flow passage, good flow state of water flow in the pump, good hydraulic performance and the like, and is particularly widely applied to large-flow and low-lift pump stations. Along with the continuous development requirement of the water conservancy industry, the requirement of a large-scale waterlogging-discharging submerged tubular pump is more and more increased, but the current submerged tubular pump is inconvenient to install and transport, and the cost is increased (such as the specification of driving in a factory is greatly improved).

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a submerged through-flow pump.

The aim of the invention can be achieved by the following technical scheme:

a submersible through-flow pump comprising: a shell, a motor and a pump head,

the motor and the pump head are arranged in the shell, and the impeller assembly is fixedly arranged on the pump head; the utility model discloses a pump head, including pump head, gear reduction box, motor, connecting body outside, a plurality of overcurrent barrels are arranged in the outside of motor shaft, a plurality of overcurrent barrels are arranged along the axial of main shaft to the motor shaft coaxial arrangement of motor, be equipped with a plurality of adapter sleeves between the motor shaft with be equipped with a plurality of through-holes on the adapter sleeve, a plurality of pinholes have all been seted up on the outer wall of motor shaft with on the outer wall of main shaft, be equipped with the locating pin in the through-hole, the locating pin passes through the through-hole and inserts in the pinhole, gear reduction box with be equipped with the connector between the motor, the connector encircles the outside of motor shaft.

Further, the outer wall of the connecting sleeve is provided with a plurality of fixing plates, two ends of each fixing plate extend to the motor shaft and the main shaft respectively, threaded holes are formed in one end, close to the fixing plates, of each main shaft and one end, close to the corresponding fixing plate, of the motor shaft, positioning holes are formed in two ends of each fixing plate, the two positioning holes are aligned with the threaded holes in the motor shaft and the main shaft respectively, a first screw rod is arranged in each positioning hole, and the lower end of each first screw rod is in threaded connection with the corresponding threaded hole; the upper end of the first screw rod is fixedly sleeved with a driven sprocket, the middle part of the fixed plate is rotationally connected with a second screw rod, the upper end of the second screw rod is fixedly sleeved with a driving sprocket, the driving sprocket is in transmission connection with the driven sprocket through a transmission chain, one end, close to the connecting sleeve, of the fixed plate is provided with a sliding groove, a pressing plate is connected in the sliding groove in a sliding manner, and a threaded counter bore is formed in the pressing plate; the second screw penetrates through the fixing plate and is in threaded connection with the threaded counter bore.

Optionally, a plurality of mounting holes are formed in the outer wall of the connector.

Optionally, a sealing element is arranged at the joint of the gear reduction box and the main shaft.

Optionally, the flow-through cylinder comprises an upper valve and a lower valve, and the upper valve and the lower valve are detachably and fixedly connected.

Optionally, a lifting lug is fixedly arranged at the upper end of the upper flap.

Optionally, a support is arranged on the inner bottom surface of the shell, and the motor is fixedly installed on the support.

The invention has the beneficial effects that:

the shell of the pump body and the overcurrent cylinder of the pump body are designed in a sectional mode, the main shaft and the motor shaft are convenient to install and detach, the submersible tubular pump can be mainly split into a pump head assembly, a planetary gear reduction box part and a submersible motor part through installing and detaching the 2 split type connecting sleeves, and the lifting capacity of the maximum equipment is greatly reduced.

The connecting device fixes the gear box main shaft and the motor main shaft together through the uniformly distributed flat keys, and the flat keys are locked through the pressing plates at the two sides so as to achieve the coupling effect. After the connecting device is added, when the water pump unit starts to pump and drain water, the axial flow blades rotate along with the main shaft, working water flowing in from the mounting hole is rotationally moved along the horizontal direction, and the water in the mounting cylinder is continuously conducted with external water, so that the heat of the main shaft, the end face and the bearing of the gearbox and the submersible motor is effectively dissipated, compared with the traditional submersible through-flow pump structure, the heat dissipation area is greatly increased, and particularly, the heat dissipation effect of the unit is affected to a certain extent because the main shaft of the gearbox and the main shaft of the motor are not contacted with the working water.

In addition, one of the main failure points of the submersible through-flow pump unit at present is that after the mechanical seal is used for a period of time, the mechanical seal at the end of a submersible motor needs to be replaced, otherwise water leakage is needed, particularly, the mechanical seal at the end of the submersible motor belongs to a special key position and is the most likely failure area, but the traditional submersible through-flow pump unit only can be pulled back to a factory, and has the defects of high transportation and disassembly and long period. The structure can visually see the mechanical seal fault point at ordinary times, can be replaced on site, is very convenient, and is convenient for daily maintenance.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional front view of a submersible through-flow pump of the invention;

FIG. 2 is a schematic illustration of the submersible motor arrangement of the present invention;

fig. 3 is a partially enlarged schematic view of fig. 1 at a.

The components corresponding to the reference numerals in the figures are as follows:

1. a pump head; 101. a pump shaft; 102. an impeller assembly; 103. a guide vane body; 2. a gear reduction box; 201. a main shaft; 3. a connecting body; 301. a mounting hole; 302. connecting sleeves; 303. a positioning pin; 4. a motor; 401. a motor shaft; 402. lifting lugs; 403. a wire outlet device; 404. a base; 405. a support; 407. a connecting plate; 6. a bearing; 7. a seal; 8. a flow-through cylinder; 801. a valve is arranged on the upper part; 802. 901, the first screw; 902. a second screw; 903. a fixing plate; 904. a drive chain; 905. and (5) pressing plates.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a submersible through-flow pump includes: the device comprises a shell, a motor 4 and a pump head 1, wherein the motor 4 and the pump head 1 are designed in the shell, and an impeller assembly 102 is fixedly arranged on the pump head; the pump head 1 is detachably and fixedly connected with a pump shaft 101, one side of the pump shaft 101 is provided with a gear reduction box 2, the pump shaft 101 is in transmission connection with one end of the gear reduction box 2, the motor 4 is arranged on the other side of the gear reduction box 2, a main shaft 201 of the gear reduction box 2 and a motor shaft 401 of the motor 4 are coaxially arranged, a plurality of connecting sleeves 302 are arranged between the motor shaft 401 and the main shaft 201, a plurality of through holes are formed in the connecting sleeves 302, the outer wall of the motor shaft 401 and the outer wall of the main shaft 201 are provided with a plurality of pin holes, a positioning pin 303 is arranged in each through hole, the positioning pin 303 is inserted into each pin hole through each through hole, a connecting body 3 is arranged between the gear reduction box 2 and the motor 4, the connecting body 3 surrounds the outer side of the motor shaft 401, a plurality of overcurrent barrels 8 are arranged on the outer side of the connecting body 3, and a plurality of overcurrent barrels 8 are arranged along the axial direction of the main shaft 201.

Optionally, a plurality of mounting holes 301 are formed on the outer wall of the connector 3, and during the mounting process, the joint of the spindle 201 and the motor shaft 401 can be mounted through the mounting holes 301. The joint of the gear reduction box 2 and the main shaft 201 is provided with a sealing piece 7. The flow-through barrel 8 comprises an upper valve 801 and a lower valve 802 which are detachably and fixedly connected. The outside of the housing is fixedly provided with a lifting lug 402. The inside bottom surface of shell is equipped with the support, motor fixed mounting is in on the support.

More specifically, the pump head 1 comprises an impeller assembly 102, a guide vane body 103 and other water pumping and draining components and is fixed on a pump shaft 101 through a key 104, rolling bearings 6 are arranged at two ends of the pump shaft 101, and a base assembly 8 is symmetrically welded and installed at the lower end of the guide vane body 103; the right side of the pump head 1 is connected with a planetary gear reduction box 2, the planetary gear reduction box 2 is a mature speed regulating device in the industry, a high-speed motor can drive an impeller assembly to run at a low speed, a gear box main shaft 201 runs at a high speed, rolling bearings 6 are arranged at two ends of the gear box main shaft 201, a mechanical seal 7 is arranged on the right side, the inner cavity of the planetary gear reduction box 2 is prevented from entering water, and the pump head 1 and the planetary gear reduction box 2 are assembled into a whole for installation and transportation; the planetary gear reduction box 2 and the submersible motor 4 are fixedly connected through a flange by the connecting body 3, specifically, the main shafts at the left end and the right end are rigidly connected through two half connecting sleeves 302, and a plurality of positioning pins 303 are vertically and symmetrically locked; the connecting body 3 is provided with 4 mounting holes 301 which are uniformly distributed, so that the split half connecting sleeve 302 is convenient to mount and dismount; the submersible tubular pump can be mainly split into a group pump head, a part of the planetary gear reduction box 2 and a part of the submersible motor by installing and detaching 2 split half connecting sleeves 302, so that the maximum equipment lifting capacity is greatly reduced; secondly, the overflow cylinder of the water pump unit adopts an upper and lower split type structure, the submersible motor 4 body can be continuously split into the base 404, the upper split 801, the lower split 802, the support 405, the wire outlet device 403 and the mounting base component 8 according to the requirements, and the tonnage of hoisting equipment and the hoisting difficulty are greatly reduced. A connection plate 407 is arranged at the lower end of the motor 4.

The outer wall of the connecting sleeve is provided with a plurality of fixing plates 903, two ends of the fixing plates 903 extend to a motor shaft and a main shaft respectively, threaded holes are formed in one ends, close to the fixing plates 903, of the motor shaft and the main shaft, positioning holes are formed in two ends of the fixing plates 903, the two positioning holes are aligned with the threaded holes in the motor shaft and the main shaft respectively, a first screw 901 is arranged in each positioning hole, and the lower end of the first screw 901 is in threaded connection with the threaded hole; the upper end of the first screw 901 is fixedly sleeved with a driven sprocket, the middle part of the fixed plate 903 is rotationally connected with the second screw 902, the upper end of the second screw 902 is fixedly sleeved with a driving sprocket, the driving sprocket is in transmission connection with the driven sprocket through a transmission chain 904, a chute is formed in one end, close to the connecting sleeve, of the fixed plate 903, a pressing plate 905 is connected in the chute in a sliding manner, and a threaded counter bore is formed in the pressing plate 905; the second screw 902 penetrates the fixing plate 903 and is in threaded connection with the threaded counter bore.

The fixing plate 903 is fixed on the outer side of the connecting sleeve, so that the positioning pin can be effectively prevented from falling out of the pin hole, and the connection between the main shaft and the motor shaft is firmer.

Specifically, in the process of disassembling and assembling the connecting sleeve, an operator only needs to rotate the middle second screw 902 to drive the first screws 901 on two sides to rotate, so that the two ends of the fixing plate 903 are disassembled or fixed with the main shaft and the motor shaft respectively, and meanwhile, the lower end of the second screw 902 drives the pressing plate 905 to slide along the radial direction of the main shaft or the motor shaft, so that the positioning pin is further ensured to be pressed in the pin hole.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims

1. A submersible through-flow pump, comprising: a shell, a motor and a pump head,

the motor and the pump head are arranged in the shell, and the impeller assembly is fixedly arranged on the pump head; the pump head is detachably and fixedly connected with a pump shaft, one side of the pump shaft is provided with a gear reduction box, the pump shaft is in transmission connection with one end of the gear reduction box, the motor is arranged on the other side of the gear reduction box, a main shaft of the gear reduction box is coaxially arranged with a motor shaft of the motor, a plurality of connecting sleeves are arranged between the motor shaft and the main shaft, a plurality of through holes are formed in the connecting sleeves, a plurality of pin holes are formed in the outer wall of the motor shaft and the outer wall of the main shaft, positioning pins are arranged in the through holes and are inserted into the pin holes through the through holes, a connecting body is arranged between the gear reduction box and the motor, the connecting body surrounds the outer side of the motor shaft, a plurality of overcurrent barrels are arranged on the outer side of the connecting body, and the overcurrent barrels are axially arranged along the main shaft;

the outer wall of the connecting sleeve is provided with a plurality of fixing plates, two ends of each fixing plate extend towards the motor shaft and the main shaft respectively, threaded holes are formed in one ends, close to the fixing plates, of the motor shaft and the main shaft, positioning holes are formed in two ends of each fixing plate, the two positioning holes are aligned with the threaded holes in the motor shaft and the main shaft respectively, a first screw rod is arranged in each positioning hole, and the lower end of each first screw rod is in threaded connection with the corresponding threaded hole; the upper end of the first screw rod is fixedly sleeved with a driven sprocket, the middle part of the fixed plate is rotationally connected with a second screw rod, the upper end of the second screw rod is fixedly sleeved with a driving sprocket, the driving sprocket is in transmission connection with the driven sprocket through a transmission chain, one end, close to the connecting sleeve, of the fixed plate is provided with a sliding groove, a pressing plate is connected in the sliding groove in a sliding manner, and a threaded counter bore is formed in the pressing plate; the second screw penetrates through the fixing plate and is in threaded connection with the threaded counter bore.

2. The submersible through-flow pump according to claim 1, wherein the outer wall of the connector body is provided with a plurality of through mounting holes.

3. The submersible through-flow pump of claim 1, wherein a seal is provided at the junction of the gear reduction box and the main shaft.

4. The submersible through-flow pump of claim 1, wherein the flow tube comprises an upper lobe and a lower lobe that are removably fixedly connected.

5. A submersible through-flow pump according to claim 3, wherein the upper end of the housing is fixedly secured with a lifting lug.

6. The submersible through-flow pump of claim 1, wherein the housing has a seat on an inner bottom surface thereof, the motor being fixedly mounted on the seat.