WO2022017093A1 - 一种潜水泵 - Google Patents

一种潜水泵 Download PDF

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Publication number
WO2022017093A1
WO2022017093A1 PCT/CN2021/100926 CN2021100926W WO2022017093A1 WO 2022017093 A1 WO2022017093 A1 WO 2022017093A1 CN 2021100926 W CN2021100926 W CN 2021100926W WO 2022017093 A1 WO2022017093 A1 WO 2022017093A1
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WO
WIPO (PCT)
Prior art keywords
shaft
transmission shaft
motor
submersible pump
water pump
Prior art date
Application number
PCT/CN2021/100926
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English (en)
French (fr)
Inventor
陈宜文
张祖福
Original Assignee
浙江泰福泵业股份有限公司
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Publication of WO2022017093A1 publication Critical patent/WO2022017093A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2280/00—Arrangements for preventing or removing deposits or corrosion
    • F04C2280/04—Preventing corrosion

Definitions

  • the present invention relates to a submersible pump which is submerged below the water surface when in use.
  • the structure of the submersible pump is cylindrical, a water pump shaft is arranged in the water pump housing, and the water pump shaft is arranged on the axial direction of the water pump housing.
  • the water pump shaft is provided with a spiral structure, and the water pump shaft is directly connected to the motor shaft.
  • the motor shaft drivesn by the motor shaft, the water pump shaft rotates, and the spiral structure on the water pump shaft pushes the water toward the upper side.
  • the water pump shaft pushes the water, the water will exert a reaction force on the water pump shaft, and the size of the reaction force is proportional to the lift of the pump.
  • the water flow will change constantly, and the reaction force on the pump shaft is in the dynamic change process, which is very unstable.
  • the water pump shaft is directly connected with the motor shaft, and the reaction force acts on the motor shaft and is directly transmitted to the motor rotor.
  • the rotor of the motor needs to rotate in the circumferential direction relative to the stator.
  • the requirement of cooperation between the rotor of the motor and the stator is high.
  • the motor rotor and stator are required to rotate relatively smoothly in the circumferential direction, and the structure of the motor cannot well adapt to the continuous oscillation of the reaction force.
  • the motor in the existing submersible pump has a short service life and is easily damaged.
  • the technical problem to be solved by the present invention is to provide a submersible pump, the motor in the submersible pump will not be easily damaged due to a large axial force.
  • a submersible pump including a water pump casing, a motor and a control box, the three of which are coaxially arranged, the control box is connected to one end of the motor casing, and a controller is arranged in the control box , the water pump shaft is arranged in the water pump casing, and it is characterized in that a coupling frame is connected to the other end of the motor casing, the coupling frame is hollow, the transmission shaft is penetrated in the coupling frame, and one end of the transmission shaft is opposite to the motor shaft Circumferentially fixed and axially movably connected, and the other end of the drive shaft is drive-connected with the water pump shaft;
  • An inward shoulder is arranged in the coupling frame, and a protruding outward structure is arranged on the outer peripheral surface of the transmission shaft.
  • the outward structure and the motor shaft are arranged on opposite sides of the inward shoulder, and the outward structure and the inward shoulder are on the coupling frame There is overlap in the radial direction, and the inward shoulders axially support the transmission shaft through the outward structure.
  • the coupling frame plays the role of connecting the motor and the water pump shaft.
  • the water pump shaft When the water pump shaft is subjected to the axial force of the water during operation, it will be blocked by the coupling frame through the transmission shaft, and the axial force on the transmission shaft will not be transmitted to the motor. on the axis.
  • a support sleeve is provided at one end of the coupling frame close to the water pump shaft, an annular skirt sleeve is integrally formed in the support sleeve, and the transmission shaft is threaded into the skirt sleeve.
  • the support sleeve is used to be connected and fixed on the coupling frame, the skirt sleeve is located in the support sleeve, and the skirt sleeve can provide a good radial support for the transmission shaft, so that the radial stability of the transmission shaft is good.
  • the outward structure is an outward convex ring integrally formed on the transmission shaft, a retaining ring is sleeved on the transmission shaft, and the retaining ring is located between the skirt and the outward convex ring.
  • one end of the transmission shaft facing the motor shaft is provided with a transmission sleeve, the end of the transmission shaft is fixedly inserted into the transmission sleeve in the circumferential direction, and the fixing screw passes through the transmission sleeve and is threadedly connected with the end of the transmission shaft to be connected.
  • the axial connection between the transmission sleeve and the transmission shaft is realized. This facilitates the transmission connection between the transmission shaft and the motor shaft, the corresponding parts are easy to process, and the quick assembly of the water pump is facilitated.
  • a metal corrosion block is provided in contact with the outer peripheral surface of the coupling frame, and the reducibility of the material of the corrosion block is greater than that of the material of the coupling frame.
  • a diameter reducing groove is formed at the middle position of the outer peripheral surface of the coupling frame, and the corrosion blocks are two pieces, both of which are arched, and the two corrosion blocks are wrapped on the bottom surface of the diameter reducing groove from opposite sides.
  • an intermediate shaft is arranged between the transmission shaft and the water pump shaft, and both ends of the intermediate shaft are respectively connected with the water pump shaft and the transmission shaft through rubber heads made of rubber.
  • the material characteristics of high elasticity of the rubber head are used to realize the adjustment of the force of the water pump shaft during the working process, which can improve the force of the water pump shaft during the working process, and the stability of the water pump during the working process is good.
  • a coupling head is provided on the two rubber heads, the two coupling heads are respectively connected with the water pump shaft and the transmission shaft, and coupling flanges are respectively protruded on the outer peripheral surfaces of the opposite ends of the coupling head and the intermediate shaft.
  • a plurality of through holes are arranged in the flange, the connecting flange is located in the rubber head, and the material constituting the rubber head enters the through holes. The rubber head can firmly realize the connection between the coupling head and the intermediate shaft, improve the transmission stability between the coupling head and the intermediate shaft, and improve the durability of the rubber head.
  • a coupling cylinder is sleeved on the outer circumference of the intermediate shaft, one end of the coupling cylinder is connected with the water pump housing, and the other end is connected with the coupling frame; a hoop made of elastic material is sleeved on the outer peripheral surface of the coupling cylinder, and the ring A plurality of support blocks are integrally formed on the outer peripheral surface of the hoop, and these support blocks are radially arranged on the hoop.
  • a coupling cylinder is provided to adapt to the setting of the intermediate shaft, and these support blocks are arranged on the outer circumference of the coupling cylinder. The support blocks support the well wall of the water source, so that the overall radial stability of the pump is good, and the working efficiency of the pump can be effectively improved. Improve the service life of the pump.
  • the outer side of the support block is provided with a number of indexing marks arranged in pairs, the indexing marks are arranged along the axial direction of the hoop, and two indexing marks in a pair are symmetrically arranged on the supporting block.
  • the positions of the indexing marks on different support blocks correspond one-to-one.
  • the present invention has the advantages that the circumferential transmission connection between the water pump shaft and the motor shaft is realized by arranging the transmission shaft, and the transmission shaft is radially supported by arranging the coupling frame, so that the Good radial stability.
  • the transmission shaft is axially supported by the blocking of the outward structure by the inward shoulder, and the transmission shaft is subjected to the axial direction of the water pump shaft.
  • the force will not directly act on the motor shaft.
  • the axial force of the motor rotor is small, which can provide good protection for the motor.
  • the motor is not easily damaged by the axial force of the water pump shaft, which effectively improves the service life of the motor. .
  • the motor shaft can have a certain axial movement margin relative to the transmission shaft, which can be well adapted to the structural arrangement of the motor rotor, so that the working stability of the motor rotor is good.
  • FIG. 1 is a perspective structural view of the submersible pump.
  • FIG. 2 is an axial cross-sectional view of FIG. 1 .
  • FIG. 3 is an enlarged view of FIG. 2 with the motor and control box removed.
  • Fig. 4 is a structural view of the assembled appearance of the coupling frame.
  • FIG. 5 is an axial cross-sectional view of FIG. 4 .
  • FIG. 6 is an exploded view of FIG. 4 .
  • Figure 7 is an axial cross-sectional view of the intermediate shaft coupled with the joint.
  • FIG. 8 is a perspective structural view of an etching block.
  • Figure 9 is a perspective structural view of the hoop and the support block as a whole.
  • control box 1, control box; 2, motor; 3, coupling frame; 31, transmission shaft; 32, transmission sleeve; 33, support sleeve; 34, skirt sleeve; 35, oil bearing sleeve; 36, retaining ring; 37, Thrust bearing; 38, screw; 39, sealing ring; 311, outward convex ring; 4, corrosion block; 41, connecting body; 42, reducing groove; 5, filter screen; 51, filter frame; 6, connecting cylinder; 61 , Intermediate shaft; 62, rubber head; 63, joint head; 7, support block; 71, index score; 8, hoop; 9, water pump housing; 91, water pump shaft.
  • the main structure of the submersible pump is approximately cylindrical, and the structure includes a water pump housing 9, a motor 2 and a control box 1, which are coaxially arranged.
  • the control box 1 is located at the bottom end of the water pump
  • the water pump housing 9 is located at the top side of the water pump
  • the motor 2 is located between the water pump housing 9 and the control box 1
  • the control box 1 is connected and fixed at the bottom end of the motor 2, and the inside of the control box 1
  • a controller is provided, and the water pump shaft 91 is arranged in the water pump housing 9 .
  • a coupling frame 3 is connected and fixed on the top end of the casing of the motor 2, the coupling frame 3 is hollow, and the coupling frame 3 is generally made of iron.
  • the transmission shaft 31 is threaded into the coupling frame 3, and one end of the transmission shaft 31 is connected with the motor shaft.
  • the relative circumferential fixation between the transmission shaft 31 and the motor shaft can realize circumferential transmission, but in the axial direction, the transmission shaft 31 can be opposite to the motor shaft. There is a certain movement margin on the motor shaft.
  • an inward shoulder is integrally formed in the coupling frame 3 , and the inward shoulder is formed by reducing the diameter of the interior of the coupling frame 3 .
  • the lower end of the transmission shaft 31 is rotatably inserted into the inward shoulder, and is used to realize a circumferential transmission connection with the motor shaft.
  • the inward shoulder is used to axially support and position the transmission shaft 31, and a protruding outward structure is provided on the outer peripheral surface of the transmission shaft 31.
  • 31 is a split sleeve structure, such as a fixed sleeve or a fixed ring axially fixed on the outer peripheral surface of the transmission shaft 31 .
  • the outward structure and the motor shaft are arranged on opposite sides of the inward shoulder.
  • the outward structure and the inward shoulder overlap in the radial direction of the coupling frame 3, and the inward shoulder pivots the transmission shaft 31 through the outward structure. To prevent the transmission shaft 31 from exerting a large axial impact force on the motor shaft.
  • a support sleeve 33 is provided at one end of the coupling frame 3 close to the water pump shaft 91, and the radial inner side of the support sleeve 33 is integrally formed.
  • a circular skirt 34 is provided, and the transmission shaft 31 is threaded into the skirt 34 .
  • Cylindrical oil-impregnated shaft sleeves 35 are embedded in the skirt sleeve 34 and the inward shoulder, respectively, so as to ensure the smoothness of the rotation of the transmission shaft 31 .
  • the oil-containing bushing 35 in the skirt 34 is located at the lower end of the skirt 34, and a sealing ring 39 is also provided on the upper end of the skirt 34 to prevent debris from entering the coupling frame 3 and prevent the leakage of lubricating oil.
  • the outward facing structure is an outward convex ring 311 integrally formed on the transmission shaft 31 , and the outward convex ring 311 is protruded from the outer peripheral surface of the transmission shaft 31 .
  • a thrust bearing 37 is provided on the upper end surface of the inward shoulder, and the lower end surface of the outward convex ring 311 is supported on the thrust bearing 37 .
  • a retaining ring 36 is sleeved on the transmission shaft 31 , and the retaining ring 36 is located between the skirt 34 and the outward convex ring 311 .
  • a plastic washer is also provided on the transmission shaft 31 between the retaining ring 36 and the skirt 34 to prevent direct collision between the retaining ring 36 and the skirt 34 .
  • the transmission shaft 31 cannot be excessively moved upward in the axial direction.
  • the inward shoulder is blocked by the thrust bearing 37 to the outward convex ring 311 , so that the transmission shaft 31 cannot move upward.
  • the transmission shaft 31 and the motor shaft can move axially relative to each other, and a spline fitting structure is usually adopted between them.
  • One end of the transmission shaft 31 facing the motor shaft is provided with a transmission sleeve 32, the end of the transmission shaft 31 is a square head, a square hole is formed on the transmission sleeve 32, and the square head is inserted into the square hole, so that the transmission shaft can be realized.
  • the fixing screw 38 passes through the transmission sleeve 32 , and the fixing screw 38 is threadedly connected with the end of the transmission shaft 31 , so as to realize the axial connection between the transmission sleeve 32 and the transmission shaft 31 .
  • a metal corrosion block 4 is provided on the outer peripheral surface of the coupling frame 3 .
  • the material of the corrosion block 4 is generally zinc, and the reducibility of zinc is greater than that of iron. 6 and 8, the corrosion block 4 is in contact with the coupling frame 3.
  • the iron coupling frame 3 is protected by sacrificing the corrosion block 4, which can better protect the stainless steel water pump housing 9 and the motor. case.
  • a diameter reducing groove 42 is formed at the middle position of the outer peripheral surface of the coupling frame 3, and the corrosion block 4 is two pieces, both of which are arched, and the two corrosion blocks 4 are wrapped on the bottom surface of the diameter reducing groove 42 from opposite sides. superior.
  • Two block-shaped coupling bodies 41 are integrally formed in the diameter-reducing groove 42 on the coupling frame 3 , and the two coupling bodies 41 are arranged in the radial direction of the diameter-reducing groove 42 . Both ends of the corrosion block 4 are respectively attached to the surfaces of the two coupling bodies 41, and the corrosion block 4 is connected and fixed to the coupling frame 3 through fixing bolts passing through the ends of the corrosion block 4 and the coupling body 41.
  • the submersible pump also includes a filter frame 51, where the filter frame 51 is provided with a filter screen 5, and the filter frame 51 also serves as the water inlet of the submersible pump.
  • the upper end of the filter frame 51 is connected with a coupling cylinder 6, and the coupling cylinder 6 is connected with the lower end of the water pump housing 9 through a hoop. The upper ends are connected together.
  • an intermediate shaft 61 is provided between the transmission shaft 31 and the water pump shaft 91 , and the intermediate shaft 61 is located at the position of the coupling cylinder 6 .
  • Two ends of the intermediate shaft 61 are respectively injection-molded with a rubber head 62 made of rubber material.
  • the rubber head 62 is also connected with a coupling head 63, and the two coupling heads 63 are respectively connected with the water pump shaft 91 and the transmission shaft 31 by screw threads.
  • On the outer peripheral surfaces of the opposite ends of the coupling head 63 and the intermediate shaft 61 there are respectively protruding coupling flanges, and a plurality of through holes are arranged in the coupling flanges. into the through hole.
  • a hoop 8 made of elastic material, generally rubber material, is sleeved on the outer peripheral surface of the coupling cylinder 6.
  • Three supporting blocks 7 are integrally formed on the outer peripheral surface of the hoop 8 .
  • the supporting blocks 7 are block-shaped.
  • the three supporting blocks 7 are radially arranged on the hoop 8 . If the water source is a deep well structure, after the submersible pump is lowered into the deep well, the outer end of the support block 7 is supported on the well wall.
  • a plurality of indexing marks 71 arranged in pairs are provided on the outer surface of the support block 7 .
  • Axially arranged, two indexing notches 71 in a pair are symmetrically arranged on opposite sides of the support block 7 .
  • the cross section of the indexing score 71 is V-shaped, and the support block 7 can be cut off from the position of the indexing score 71 with a knife, or directly removed by hand, thereby shortening the size of the support block 7 in the radial direction of the submersible pump.
  • the positions of the indexing marks 71 on different support blocks 7 are in one-to-one correspondence. Therefore, when the support block 7 needs to be cut off, it is only necessary to count the indexing marks 71, or carry out according to the labels corresponding to the indexing marks 71. Through the operation, all the support blocks 7 can be cut in a uniform size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种潜水泵，包括水泵壳体（9）、电机（2）和控制盒（1），三者同轴设置，控制盒（1）联接在电机壳体（9）的一端上，水泵轴（91）设置在水泵壳体（9）内，在电机壳体（9）的另一端上联接有联接架（3），联接架（3）中空，传动轴（31）穿接在联接架（3）内，传动轴（31）的一端与电机轴之间相对周向固定、轴向活动地联接，另一端与水泵轴（91）传动联接；在联接架（3）内设有内向凸肩，在传动轴（31）的外周面上设有凸出的外向结构，外向结构与电机轴分列在内向凸肩的相对两侧，外向结构与内向凸肩在联接架（3）的径向上具有重叠，内向凸肩通过外向结构对传动轴（31）进行轴向支撑。传动轴（31）所受到水泵轴（91）的轴向作用力不会直接作用到电机轴上，电机转子的轴向受力小，提高了电机的使用寿命。

Description

一种潜水泵 技术领域
本发明涉及一种在使用时下潜到水面以下的潜水泵。
背景技术
潜水泵的结构形式为圆柱形，在水泵壳体内设置有水泵轴，水泵轴设置在水泵壳体的轴向上。水泵轴上设置有螺旋结构，水泵轴直接联接在电机轴上，在电机轴的带动下，水泵轴转动，水泵轴上的螺旋结构会把水向着上侧推送。在水泵轴对水推送的过程中，水会对水泵轴施加反作用力，该反作用力的大小与水泵的扬程成正比。在实际的应用过程中，水流会不断变化，水泵轴所受到的反作用力处于动态变化过程中，非常不稳定。现有的结构下，水泵轴直接与电机轴相联接，这种反作用力会作用在电机轴上，并被直接传递到电机转子上。而电机转子需要相对于定子周向转动，为适应前述的这种反作用力，电机转子与定子之间的配合要求高。而电机转子与定子之间要求相对周向转动顺畅，电机的结构上并不能很好地适应这种反作用力的持续振荡作用，现有潜水泵中的电机使用寿命短，易损坏。
发明内容
本发明需要解决的技术问题：提供一种潜水泵，该潜水泵中的电机不会因受到较大的轴向力而易损坏。
解决技术问题所采取的技术方案：一种潜水泵，包括水泵壳体、电机和控制盒，它们三者同轴设置，控制盒联接在电机壳体的一端上，控制盒内设有控制器，水泵轴设置在水泵壳体内，其特征在于，在电 机壳体的另一端上联接有联接架，联接架中空，传动轴穿接在联接架内，传动轴的一端与电机轴之间相对周向固定、轴向活动地联接，传动轴的另一端与水泵轴传动联接；
在联接架内设有内向凸肩，在传动轴的外周面上设有凸出的外向结构，外向结构与电机轴分列在内向凸肩的相对两侧，外向结构与内向凸肩在联接架的径向上具有重叠，内向凸肩通过外向结构对传动轴进行轴向支撑。
联接架起到联接电机与水泵轴的作用，水泵轴在工作时所受到水的轴向力时会通过传动轴而被联接架阻挡住，传动轴上受到的轴向力不会被传递到电机轴上。
进一步地，在联接架靠近水泵轴的一端处设有支撑套，支撑套内一体成型有圆环形的裙套，传动轴穿接在裙套内。支撑套用于联接固定到联接架上，裙套位于支撑套内，裙套可以为传动轴提供良好的径向支撑作用，使得传动轴的径向稳定性好。
进一步地，所述的外向结构为一体成型在传动轴上的外向凸环，在传动轴上套接有挡圈，挡圈位于裙套和外向凸环之间。设置所述的挡圈，可以使裙套通过挡圈而对传动轴进行轴向限定，使得传动轴被限定在裙套与外向凸环之间，在保证传动轴具有轴向运动余量的前提下，使得传动轴的轴向稳定性好。
进一步地，传动轴朝向电机轴的一端部设有传动套，传动轴的该端部周向固定地插接在传动套内，固定螺钉穿过传动套而与传动轴的该端部螺纹联接而实现传动套与传动轴的轴向联接。这方便了传动轴 与电机轴之间的传动联接，相应部件便于加工，便于实现水泵的快速装配。
进一步地，联接架的外周面上接触地设有金属的腐蚀块，腐蚀块材质的还原性大于联接架材质的还原性。通过设置腐蚀块，在牺牲腐蚀块的基础上可以有效保护联接架、水泵壳体等水泵上一些与水直接相接触的部件，能够有效提高水泵的使用寿命。
进一步地，在联接架外周面的中部位置处成型有缩径槽，腐蚀块为两块、均呈拱形，两块腐蚀块自相对两侧包裹在缩径槽的底面上。这使得水泵整体的结构紧凑性好，便于实现腐蚀块的稳定装配。
进一步地，在传动轴与水泵轴之间设有中间轴，中间轴的两端分别通过橡胶材质的橡胶头与水泵轴和传动轴相联接。利用橡胶头弹性高的材料特性，来实现对水泵轴工作过程中受力的调整，能够改善水泵轴在工作过程中的受力情况，水泵在工作过程中的稳定性好。
进一步地，两橡胶头上均设置有一只联接头，两联接头分别与水泵轴和传动轴相联接，在联接头和中间轴相向的两端外周面上分别突出地设置有联接法兰，联接法兰内设有若干透孔，联接法兰位于橡胶头内，构成橡胶头的材料进入到透孔内。橡胶头能够牢固地实现联接头与中间轴之间的联接，提高联接头与中间轴之间的传动稳定性，提高橡胶头的耐用性。
进一步地，在中间轴的外周套接有联接筒，联接筒一端与水泵壳体相联接，另一端与联接架相联接；在联接筒的外周面套接有弹性材料制成的环箍，环箍的外周面上一体成型有若干支撑块，这些支撑块 在环箍上呈放射状设置。设置有联接筒来适应中间轴的设置，且在联接筒的外周设置这些支撑块，通过支撑块对水源地井壁的支撑，使得水泵整体的径向稳定性好，能够有效提高水泵的工作效率，提高水泵的使用寿命。
进一步地，支撑块的外侧面上设有若干成对设置的分度刻痕，分度刻痕沿环箍的轴向设置，一对中的两条分度刻痕对称地设置在支撑块的相对两侧，分度刻痕在不同支撑块上的位置一一对应。通过设置分度刻痕，可以很方便地对支撑块进行定量截除，使得支撑块能够很好地适应不同内径井壁的支撑要求。
与现有技术相比，本发明的优点：通过设置传动轴来实现水泵轴与电机轴之间的周向传动联接，并通过设置联接架，来对传动轴进行径向支撑，使得传动轴的径向稳定性好。通过在传动轴上形成有外向结构，同时在联接架内形成有内向凸肩，通过内向凸肩对外向结构的阻挡，而实现对传动轴进行轴向支撑，传动轴所受到水泵轴的轴向作用力不会直接作用到电机轴上，电机转子的轴向受力小，能够为电机提供良好的保护作用，电机不易因水泵轴的轴向作用力而损坏，有效地提高了电机的使用寿命。电机轴可相对于传动轴而具有一定的轴向活动余量，能够很好地适应电机转子的结构设置，使得电机转子的工作稳定性好。
附图说明
图1是本潜水泵的立体结构图。
图2是图1的轴向剖视图。
图3是图2去除电机和控制盒后的放大图。
图4是联接架的装配外观结构图。
图5是图4的轴向剖视图。
图6是图4的爆炸图。
图7是中间轴与接头相联接在一起的轴向剖视图。
图8是腐蚀块的立体结构图。
图9是环箍和支撑块作为一个整体的立体结构图。
图中：1、控制盒；2、电机；3、联接架；31、传动轴；32、传动套；33、支撑套；34、裙套；35、含油轴套；36、挡圈；37、推力轴承；38、螺钉；39、密封圈；311、外向凸环；4、腐蚀块；41、联接体；42、缩径槽；5、滤网；51、过滤架；6、联接筒；61、中间轴；62、橡胶头；63、联接头；7、支撑块；71、分度刻痕；8、环箍；9、水泵壳体；91、水泵轴。
具体实施方式
下面结合附图对本发明作进一步说明。
图1、2中，本潜水泵主体结构近似为圆筒形，结构包括水泵壳体9、电机2和控制盒1，它们三者同轴设置。控制盒1位于水泵的底端，水泵壳体9位于水泵的顶端侧，电机2位于水泵壳体9和控制盒1之间，控制盒1联接固定在电机2的底端处，控制盒1内设有控制器，水泵轴91设置在水泵壳体9内。
见图2、3中，为实现联接固定，在电机2壳体的顶端上联接固定有联接架3，联接架3中空，联接架3一般为铁质的。传动轴31 穿接在联接架3内，传动轴31的一端与电机轴相联接，传动轴31与电机轴之间相对周向固定能够实现周向传动，但在轴向上传动轴31可相对于电机轴而具有一定的活动余量。
见图4、5，在联接架3内一体成型有内向凸肩，内向凸肩是由联接架3的内部通过缩径而形成的。传动轴31的下端部转动地插接在内向凸肩内，并用于和电机轴实现周向传动联接。内向凸肩用于对传动轴31进行轴向支撑定位，在传动轴31的外周面上设有凸出的外向结构，该外向结构可以是下述的外向凸环311，也可以是与传动轴31为分体式的套结构，如轴向固定在传动轴31外周面上的固定套或固定圈。外向结构与电机轴分列在内向凸肩的相对两侧，在径向尺寸上，外向结构与内向凸肩在联接架3的径向上具有重叠，内向凸肩通过外向结构对传动轴31进行轴向支撑，以免传动轴31对电机轴施加较大的轴向冲击力。
内向凸肩在联接架3上的位置靠近电机2，为对传动轴31进行径向支撑，在联接架3靠近水泵轴91的一端处设有支撑套33，支撑套33的径向内侧一体成型有圆环形的裙套34，传动轴31穿接在裙套34内。在裙套34和内向凸肩内分别嵌入圆筒形的含油轴套35，以保证传动轴31的转动顺畅性。裙套34内的含油轴套35处于裙套34的下端侧，在裙套34内的上端侧还设密封圈39，以免杂物进入到联接架3内，且能够防止润滑油的泄漏。
图6中显示，所述的外向结构为一体成型在传动轴31上的外向凸环311，外向凸环311在传动轴31的外周面上凸出设置。图5中， 在内向凸肩的上端面上设有推力轴承37，外向凸环311的下端面支承在推力轴承37上。在传动轴31上套接有挡圈36，挡圈36位于裙套34和外向凸环311之间。在传动轴31上于挡圈36和裙套34之间还设置有塑料材质的垫圈，以免挡圈36与裙套34之间产生直接的碰撞。通过设置有挡圈36、垫圈和裙套34，使得传动轴31不能够向上轴向窜动过度。内向凸肩通过推力轴承37对外向凸环311的阻挡，而限定传动轴31不能够向上移动。传动轴31与电机轴之间可相对轴向活动，它们两者之间通常采用的是花键配合结构。传动轴31朝向电机轴的一端部设有传动套32，传动轴31的该端部为方头，在传动套32上设有方孔，方头插接在方孔内，而可实现传动轴31与传动套32之间的周向传动。固定螺钉38自传动套32内穿过，固定螺钉38与传动轴31的端部螺纹联接，从而实现传动套32与传动轴31的轴向联接。
为减轻水源地对水泵的侵蚀，联接架3的外周面上设有金属的腐蚀块4。腐蚀块4的材质一般为锌，锌的还原性大于铁的还原性。结合图6、8，腐蚀块4与联接架3相接触，在受到腐蚀时，以牺牲腐蚀块4的方式来保护铁质的联接架3，更能够保护不锈钢材质的水泵壳体9和电机壳体。为美观起见，在联接架3外周面的中部位置处成型有缩径槽42，腐蚀块4为两块、均呈拱形，两块腐蚀块4自相对两侧包裹在缩径槽42的底面上。在联接架3上于缩径槽42内一体成型有两块状的联接体41，两联接体41被设置在缩径槽42的径向上。腐蚀块4的两端分别贴合在两联接体41的表面上，通过固定螺栓穿 过腐蚀块4的端部和联接体41，而实现腐蚀块4联接固定到联接架3上。
本潜水泵还包括过滤架51，在过滤架51处设置有滤网5，过滤架51也作为潜水泵的进水口。过滤架51的上端联接有联接筒6，联接筒6通过箍套与水泵壳体9下端相联接，水泵壳体9的上端作为出水口，过滤架51的下端通过轴向螺栓而与联接架3的上端相联接在一起。
结合图3、7，在传动轴31与水泵轴91之间设有中间轴61，中间轴61位于联接筒6位置处。在中间轴61的两端分别注塑成型有一橡胶材质的橡胶头62，橡胶头62内还联接有联接头63，两联接头63分别与水泵轴91和传动轴31相螺纹联接。在联接头63和中间轴61相向的两端外周面上分别突出地设置有联接法兰，联接法兰内设有若干透孔，联接法兰位于橡胶头62内，构成橡胶头62的材料进入到透孔内。
结合图1、9，为保证本潜水泵在工作时的径向稳定性，在联接筒6的外周面套接有弹性材料制成的环箍8，一般为橡胶材料。在环箍8的外周面上一体成型有三支撑块7，支撑块7为块状，这三块支撑块7在环箍8上呈放射状设置，支撑块7在环箍8的周向均布。若水源地为深井结构，在把潜水泵下放到深井内后，使支撑块7的外端部支撑到井壁上。也可在水源地固定设置筒形体，再把带有环箍8和支撑块7的潜水泵放置到筒形体内，使支撑块7的外端部支撑到筒形体的内壁面上，从而实现对潜水泵的径向固定，使潜水泵稳定工作。
图9中，为使支撑块7适应不同内径井或筒形体的支撑，在支撑块7的外侧面上设有若干成对设置的分度刻痕71，分度刻痕71沿环箍8的轴向设置，一对中的两条分度刻痕71对称地设置在支撑块7的相对两侧。分度刻痕71的横截面呈V形，可以自分度刻痕71位置处对支撑块7用刀进行切除，或直接手扳动去除，而缩短支撑块7在潜水泵径向上的尺寸。分度刻痕71在不同支撑块7上的位置一一对应，因此，在需要对支撑块7进行切除时，只需要计数分度刻痕71，或按照分度刻痕71所对应的标号进行操作，即可对所有的支撑块7进行统一尺寸的切除。

Claims (10)

  1. 一种潜水泵，包括水泵壳体、电机和控制盒，它们三者同轴设置，控制盒联接在电机壳体的一端上，控制盒内设有控制器，水泵轴设置在水泵壳体内，其特征在于，在电机壳体的另一端上联接有联接架，联接架中空，传动轴穿接在联接架内，传动轴的一端与电机轴之间相对周向固定、轴向活动地联接，传动轴的另一端与水泵轴传动联接；
    在联接架内设有内向凸肩，在传动轴的外周面上设有凸出的外向结构，外向结构与电机轴分列在内向凸肩的相对两侧，外向结构与内向凸肩在联接架的径向上具有重叠，内向凸肩通过外向结构对传动轴进行轴向支撑。
  2. 根据权利要求1所述的潜水泵，其特征在于，在联接架靠近水泵轴的一端处设有支撑套，支撑套内一体成型有圆环形的裙套，传动轴穿接在裙套内。
  3. 根据权利要求2所述的潜水泵，其特征在于，所述的外向结构为一体成型在传动轴上的外向凸环，在传动轴上套接有挡圈，挡圈位于裙套和外向凸环之间。
  4. 根据权利要求1所述的潜水泵，其特征在于，传动轴朝向电机轴的一端部设有传动套，传动轴的该端部周向固定地插接在传动套内，固定螺钉穿过传动套而与传动轴的该端部螺纹联接而实现传动套与传动轴的轴向联接。
  5. 根据权利要求1所述的潜水泵，其特征在于，联接架的外周面上接触地设有金属的腐蚀块，腐蚀块材质的还原性大于联接架材质的 还原性。
  6. 根据权利要求5所述的潜水泵，其特征在于，在联接架外周面的中部位置处成型有缩径槽，腐蚀块为两块、均呈拱形，两块腐蚀块自相对两侧包裹在缩径槽的底面上。
  7. 根据权利要求1所述的潜水泵，其特征在于，在传动轴与水泵轴之间设有中间轴，中间轴的两端分别通过橡胶材质的橡胶头与水泵轴和传动轴相联接。
  8. 根据权利要求7所述的潜水泵，其特征在于，两橡胶头上均设置有一只联接头，两联接头分别与水泵轴和传动轴相联接，在联接头和中间轴相向的两端外周面上分别突出地设置有联接法兰，联接法兰内设有若干透孔，联接法兰位于橡胶头内，构成橡胶头的材料进入到透孔内。
  9. 根据权利要求1所述的潜水泵，其特征在于，在中间轴的外周套接有联接筒，联接筒一端与水泵壳体相联接，另一端与联接架相联接；在联接筒的外周面套接有弹性材料制成的环箍，环箍的外周面上一体成型有若干支撑块，这些支撑块在环箍上呈放射状设置。
  10. 根据权利要求9所述的潜水泵，其特征在于，支撑块的外侧面上设有若干成对设置的分度刻痕，分度刻痕沿环箍的轴向设置，一对中的两条分度刻痕对称地设置在支撑块的相对两侧，分度刻痕在不同支撑块上的位置一一对应。
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