阅读说明：本技术 一种潜水泵 (Submersible pump ) 是由 陈宜文 张祖福 于 2020-07-21 设计创作，主要内容包括：本发明公开了一种潜水泵,解决了现有潜水泵中,由于电机转子经常受力较大的轴向力而易损坏的问题,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,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。(The invention discloses a submersible pump, which solves the problem that a motor rotor is easy to damage due to large axial force which is often applied to the motor rotor in the existing submersible pump, and adopts the technical scheme that: a submersible pump comprises a water pump shell, a motor and a control box, wherein the water pump shell, the motor and the control box are coaxially arranged, the control box is connected to one end of a motor shell, a controller is arranged in the control box, a water pump shaft is arranged in the water pump shell, the other end of the motor shell is connected with a connecting frame, the connecting frame is hollow, a transmission shaft is connected in the connecting frame in a penetrating mode, one end of the transmission shaft is fixedly connected with a motor shaft in a circumferential direction and movably connected with the motor shaft in an axial direction, and the other end of the transmission shaft; the motor shaft is provided with a transmission shaft, the transmission shaft is provided with a connection frame, the connection frame is internally provided with an inward convex shoulder, the peripheral surface of the transmission shaft is provided with a convex outward structure, the outward structure and the motor shaft are respectively arranged at two opposite sides of the inward convex shoulder, the outward structure and the inward convex shoulder are overlapped in the radial direction of the connection frame, and the inward convex shoulder axially supports the transmission shaft through the outward structure.)

1. A kind of sinking pump, including water pump shell, electrical machinery and control box, they are coaxial to set up, the control box couples to one end of the motor shell, there are controllers in the control box, the water pump shaft is set up in the water pump shell, characterized by that, couple to the link span on another end of the motor shell, the link span is hollow, the drive shaft is threaded in the link span, one end of the drive shaft is relatively fixed circumferentially, axially movably coupled between motor shaft, another end of the drive shaft couples to water pump shaft transmission;

the motor shaft is provided with a transmission shaft, the transmission shaft is provided with a connection frame, the connection frame is internally provided with an inward convex shoulder, the peripheral surface of the transmission shaft is provided with a convex outward structure, the outward structure and the motor shaft are respectively arranged at two opposite sides of the inward convex shoulder, the outward structure and the inward convex shoulder are overlapped in the radial direction of the connection frame, and the inward convex shoulder axially supports the transmission shaft through the outward structure.

2. The submersible pump of claim 1, wherein a support sleeve is provided at an end of the coupling frame adjacent to the water pump shaft, a circular skirt is integrally formed in the support sleeve, and the drive shaft is inserted into the skirt.

3. The submersible pump of claim 2, wherein the outward structure is an outward protruding ring integrally formed on the drive shaft, and a retainer ring is sleeved on the drive shaft and is positioned between the skirt and the outward protruding ring.

4. The submersible pump of claim 1, wherein an end of the drive shaft facing the motor shaft is provided with a drive sleeve, the end of the drive shaft is fixedly inserted into the drive sleeve in a circumferential direction, and the fixing screw penetrates through the drive sleeve to be in threaded connection with the end of the drive shaft so as to realize axial connection between the drive sleeve and the drive shaft.

5. The submersible pump of claim 1, wherein the coupling frame has a metal corrosion block disposed on an outer circumferential surface thereof in contact therewith, the corrosion block being made of a material having a reducibility greater than that of the coupling frame.

6. The submersible pump of claim 5, wherein the reducing groove is formed in the middle of the outer peripheral surface of the coupling frame, the two corrosion blocks are both arched, and the two corrosion blocks wrap the bottom surface of the reducing groove from opposite sides.

7. The submersible pump of claim 1, wherein an intermediate shaft is disposed between the drive shaft and the water pump shaft, and both ends of the intermediate shaft are coupled to the water pump shaft and the drive shaft, respectively, via rubber heads made of rubber.

8. The submersible pump according to claim 7, wherein the two rubber heads are each provided with a coupling head, the two coupling heads are respectively coupled to the water pump shaft and the transmission shaft, the coupling flanges are respectively protrudingly provided on outer peripheral surfaces of opposite ends of the coupling heads and the intermediate shaft, the coupling flanges are provided with a plurality of through holes, the coupling flanges are located in the rubber heads, and a material constituting the rubber heads enters the through holes.

9. The submersible pump of claim 1, wherein a coupling sleeve is sleeved on the outer periphery of the intermediate shaft, one end of the coupling sleeve is coupled with a water pump shell, and the other end of the coupling sleeve is coupled with the coupling frame; the periphery of the connecting cylinder is sleeved with a hoop made of elastic materials, the periphery of the hoop is integrally formed with a plurality of supporting blocks, and the supporting blocks are arranged on the hoop in a radial shape.

10. The submersible pump of claim 9, wherein the outer side of the support block is provided with a plurality of indexing scores arranged in pairs, the indexing scores are arranged along the axial direction of the hoop, two indexing scores in a pair are symmetrically arranged on two opposite sides of the support block, and the positions of the indexing scores on different support blocks correspond one to one.

Technical Field

The present invention relates to a submersible pump which in use is submerged below the surface of the water.

Background

The structure form of the submersible pump is cylindrical, a water pump shaft is arranged in a water pump shell, and the water pump shaft is arranged in the axial direction of the water pump shell. The water pump shaft is directly connected to the motor shaft, and driven by the motor shaft to rotate, the spiral structure on the water pump shaft can push water to the upper side. During the process of pushing water by the water pump shaft, the water exerts a reaction force on the water pump shaft, and the magnitude of the reaction force is in direct proportion to the lift of the water pump. In the practical application process, the water flow can change constantly, and the reaction force applied to the water pump shaft is unstable in the dynamic change process. In the prior art, 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. And the motor rotor needs to rotate relative to the stator in the circumferential direction, and in order to adapt to the above counterforce, the matching requirement between the motor rotor and the stator is high. The motor rotor and the stator are required to rotate smoothly in the circumferential direction, the structure of the motor cannot be well adapted to the continuous oscillation action of the reaction force, and the motor in the existing submersible pump is short in service life and easy to damage.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: a submersible pump is provided in which the motor is not vulnerable to large axial forces.

The technical scheme for solving the technical problem is as follows: a kind of sinking pump, including water pump shell, electrical machinery and control box, they are coaxial to set up, the control box couples to one end of the motor shell, there are controllers in the control box, the water pump shaft is set up in the water pump shell, characterized by that, couple to the link span on another end of the motor shell, the link span is hollow, the drive shaft is threaded in the link span, one end of the drive shaft is relatively fixed circumferentially, axially movably coupled between motor shaft, another end of the drive shaft couples to water pump shaft transmission;

the motor shaft is provided with a transmission shaft, the transmission shaft is provided with a connection frame, the connection frame is internally provided with an inward convex shoulder, the peripheral surface of the transmission shaft is provided with a convex outward structure, the outward structure and the motor shaft are respectively arranged at two opposite sides of the inward convex shoulder, the outward structure and the inward convex shoulder are overlapped in the radial direction of the connection frame, and the inward convex shoulder axially supports the transmission shaft through the outward structure.

The coupling frame plays a role in coupling the motor and the water pump shaft, the water pump shaft can be blocked by the coupling frame through the transmission shaft when being subjected to the axial force of water during working, and the axial force on the transmission shaft cannot be transmitted to the motor shaft.

Furthermore, a support sleeve is arranged at one end of the connecting frame close to the water pump shaft, a circular skirt sleeve is integrally formed in the support sleeve, and the transmission shaft penetrates through the skirt sleeve. The support sleeve is used for being connected and fixed to the connecting frame, the skirt sleeve is located in the support sleeve, and the skirt sleeve can provide good radial supporting effect for the transmission shaft, so that the radial stability of the transmission shaft is good.

Further, the outward structure be integrated into one piece at the epaxial outward bulge loop of transmission, the retaining ring has been cup jointed on the transmission shaft, the retaining ring is located between skirt cover and the outward bulge loop. Set up the retaining ring, can make the skirt cover carry out the axial to the transmission shaft through the retaining ring and prescribe a limit to for the transmission shaft is prescribed a limit to between skirt cover and the outside bulge loop, under the prerequisite that guarantees that the transmission shaft has the axial motion allowance, makes the axial stability of transmission shaft good.

Furthermore, a transmission sleeve is arranged at one end part of the transmission shaft facing the motor shaft, the end part of the transmission shaft is fixedly inserted into the transmission sleeve in the circumferential direction, and a fixing screw penetrates through the transmission sleeve to be in threaded connection with the end part of the transmission shaft so as to realize the axial connection between the transmission sleeve and the transmission shaft. The transmission connection between the transmission shaft and the motor shaft is convenient, the corresponding parts are convenient to process, and the rapid assembly of the water pump is convenient to realize.

Furthermore, a metal corrosion block is arranged on the outer peripheral surface of the connecting frame in a contact manner, and the reducibility of the material of the corrosion block is greater than that of the material of the connecting frame. Through setting up the corruption piece, can effectively protect some parts that directly contact with water on water pumps such as hookup frame, water pump shell on the basis of sacrificing the corruption piece, can effectively improve the life of water pump.

Furthermore, a reducing groove is formed in the middle of the outer peripheral surface of the connecting frame, the two corrosion blocks are both arched, and the two corrosion blocks are wrapped on the bottom surface of the reducing groove from two opposite sides. The water pump is good in integral structure compactness, and stable assembly of the corrosion block is convenient to realize.

Furthermore, an intermediate shaft is arranged between the transmission shaft and the water pump shaft, and two ends of the intermediate shaft are respectively connected with the water pump shaft and the transmission shaft through rubber heads made of rubber materials. The high material characteristic of rubber head elasticity is utilized to realize the adjustment to the atress of water pump shaft working process, can improve the atress condition of water pump shaft in the working process, and the stability of water pump in the working process is good.

Furthermore, two rubber heads are respectively provided with a connecting head, the two connecting heads are respectively connected with the water pump shaft and the transmission shaft, the peripheral surfaces of two opposite ends of the connecting heads and the middle shaft are respectively provided with a connecting flange in a protruding manner, a plurality of through holes are arranged in the connecting flanges, the connecting flanges are positioned in the rubber heads, and materials forming the rubber heads enter the through holes. The rubber head can firmly realize the connection between the coupling head and the intermediate shaft, the transmission stability between the coupling head and the intermediate shaft is improved, and the durability of the rubber head is improved.

Furthermore, a connecting cylinder is sleeved on the periphery of the intermediate shaft, one end of the connecting cylinder is connected with a water pump shell, and the other end of the connecting cylinder is connected with a connecting frame; the periphery of the connecting cylinder is sleeved with a hoop made of elastic materials, the periphery of the hoop is integrally formed with a plurality of supporting blocks, and the supporting blocks are arranged on the hoop in a radial shape. Be provided with the setting that the connecting cylinder adapts to the jackshaft, and set up these supporting shoes in the periphery of connecting cylinder, through the support of supporting shoe to water source ground well wall for the holistic radial stability of water pump is good, can effectively improve the work efficiency of water pump, improves the life of water pump.

Furthermore, a plurality of indexing notches arranged in pairs are arranged on the outer side surface of the supporting block, the indexing notches are arranged along the axial direction of the hoop, two indexing notches in one pair are symmetrically arranged on two opposite sides of the supporting block, and the positions of the indexing notches on different supporting blocks correspond to one another. Through setting up the graduation nick, can conveniently carry out the ration to the supporting shoe and cut for the supporting shoe can adapt to the support requirement of different internal diameter wall of a well.

Compared with the prior art, the invention has the advantages that: circumferential transmission connection between the water pump shaft and the motor shaft is achieved through the arrangement of the transmission shaft, and the transmission shaft is radially supported through the arrangement of the connection frame, so that the radial stability of the transmission shaft is good. Through being formed with the extroversion structure on the transmission shaft, be formed with the inside convex shoulder simultaneously in the hookup frame, through the stopping of inside convex shoulder to the extroversion structure, and realize carrying out axial support to the transmission shaft, the transmission shaft receives the axial effort of water pump axle can not directly act on the motor shaft, and electric motor rotor's axial atress is little, can provide good guard action for the motor, and the motor is difficult to damage because of the axial effort of water pump axle, has improved the life of motor effectively. The motor shaft can have certain axial movement allowance for the transmission shaft, can adapt to the structural arrangement of motor rotor well for motor rotor's job stabilization nature is good.

Drawings

Fig. 1 is a perspective view of the submersible pump.

Fig. 2 is an axial sectional view of fig. 1.

Fig. 3 is an enlarged view of fig. 2 with the motor and control box removed.

Fig. 4 is an assembled appearance structural view of the coupling frame.

Fig. 5 is an axial cross-sectional view of fig. 4.

Fig. 6 is an exploded view of fig. 4.

Fig. 7 is an axial cross-sectional view of an intermediate shaft coupled with a joint.

FIG. 8 is a perspective view of an etching block.

Figure 9 is a perspective view of the hoop and support block as a unit.

In the figure: 1. a control box; 2. a motor; 3. a coupling frame; 31. a drive shaft; 32. a transmission sleeve; 33. a support sleeve; 34. a skirt cover; 35. an oil-containing shaft sleeve; 36. a retainer ring; 37. a thrust bearing; 38. a screw; 39. a seal ring; 311. an outward convex ring; 4. corroding blocks; 41. a coupling body; 42. a reducing groove; 5. filtering with a screen; 51. a filter frame; 6. a coupling cylinder; 61. an intermediate shaft; 62. a rubber head; 63. a coupling head; 7. a support block; 71. indexing and scoring; 8. a hoop; 9. a water pump housing; 91. a water pump shaft.

Detailed Description

The invention will be further explained with reference to the drawings.

In fig. 1 and 2, the main structure of the submersible pump is approximately cylindrical, and the submersible pump structurally comprises a water pump shell 9, a motor 2 and a control box 1 which are coaxially arranged. The control box 1 is located the bottom of water pump, and the water pump shell 9 is located the top side of water pump, and motor 2 is located between water pump shell 9 and the control box 1, and the hookup of control box 1 is fixed in the bottom department of motor 2, is equipped with the controller in the control box 1, and water pump shaft 91 sets up in the water pump shell 9.

In fig. 2 and 3, in order to realize the connection and fixation, a connecting frame 3 is fixedly connected to the top end of the shell of the motor 2, the connecting frame 3 is hollow, and the connecting frame 3 is generally iron. The transmission shaft 31 penetrates through the connecting frame 3, one end of the transmission shaft 31 is connected with the motor shaft, the transmission shaft 31 and the motor shaft are fixed relatively in the circumferential direction to realize circumferential transmission, but the transmission shaft 31 can have a certain movement allowance relative to the motor shaft in the axial direction.

In the coupling cage 3, see fig. 4 and 5, an inward shoulder is integrally formed, which is formed by reducing the diameter of the interior of the coupling cage 3. The lower end of the drive shaft 31 is rotatably inserted into the inward-facing shoulder and is used for circumferential drive coupling with the motor shaft. The inward shoulder is used for axially supporting and positioning the transmission shaft 31, and a protruding outward structure is arranged on the outer circumferential surface of the transmission shaft 31, and the outward structure may be an outward protruding ring 311 described below, or may be a split sleeve structure with the transmission shaft 31, such as a fixed sleeve or a fixed ring axially fixed on the outer circumferential surface of the transmission shaft 31. The outward structure and the motor shaft are respectively arranged on two opposite sides of the inward convex shoulder, the outward structure and the inward convex shoulder are overlapped in the radial direction of the connecting frame 3 in the radial dimension, and the inward convex shoulder axially supports the transmission shaft 31 through the outward structure so as to prevent the transmission shaft 31 from applying large axial impact force to the motor shaft.

The position of the inward shoulder on the connecting frame 3 is close to the motor 2, in order to radially support the transmission shaft 31, a supporting sleeve 33 is arranged at one end of the connecting frame 3 close to the water pump shaft 91, a circular skirt sleeve 34 is integrally formed on the radial inner side of the supporting sleeve 33, and the transmission shaft 31 penetrates into the skirt sleeve 34. Cylindrical oil-impregnated bushings 35 are inserted into the skirt 34 and the inward shoulder, respectively, to ensure smooth rotation of the drive shaft 31. The oil-containing sleeve 35 in the skirt 34 is positioned at the lower end side of the skirt 34, and a seal ring 39 is further provided at the upper end side in the skirt 34, so that foreign matter is prevented from entering the coupling frame 3, and leakage of lubricating oil can be prevented.

In fig. 6, the outward structure is an outward protruding ring 311 integrally formed on the transmission shaft 31, and the outward protruding ring 311 protrudes from the outer circumferential surface of the transmission shaft 31. In fig. 5, a thrust bearing 37 is provided on the upper end surface of the inward shoulder, and the lower end surface of the outward projecting ring 311 is supported by the thrust bearing 37. A retainer ring 36 is sleeved on the transmission shaft 31, and the retainer ring 36 is positioned between the skirt 34 and the outward convex ring 311. A gasket made of plastic is further provided on the transmission shaft 31 between the retainer ring 36 and the skirt 34 to prevent direct collision between the retainer ring 36 and the skirt 34. By providing the retainer ring 36, washer and skirt 34, the drive shaft 31 cannot be excessively axially displaced upward. The inward shoulder limits the drive shaft 31 from being able to move upward by blocking the outward collar 311 by the thrust bearing 37. The transmission shaft 31 and the motor shaft can move axially relative to each other, and a spline fit structure is usually adopted between the transmission shaft and the motor shaft. One end part of the transmission shaft 31 facing the motor shaft is provided with a transmission sleeve 32, the end part of the transmission shaft 31 is a square head, a square hole is formed in the transmission sleeve 32, and the square head is inserted into the square hole, so that circumferential transmission between the transmission shaft 31 and the transmission sleeve 32 can be realized. The fixing screw 38 passes through the driving sleeve 32, and the fixing screw 38 is in threaded connection with the end of the driving shaft 31, so that the driving sleeve 32 is axially connected with the driving shaft 31.

In order to reduce the corrosion of the water pump in a water source place, a metal corrosion block 4 is arranged on the outer peripheral surface of the connecting frame 3. The material of the corrosion block 4 is generally zinc, and the reducibility of zinc is greater than that of iron. Referring to fig. 6 and 8, the corrosion block 4 is in contact with the coupling frame 3, and when the corrosion block 4 is corroded, the iron coupling frame 3 is protected in a mode of sacrificing the corrosion block 4, and the water pump shell 9 and the motor shell which are made of stainless steel can be further protected. For the sake of beauty, a reducing groove 42 is formed in the middle of the outer peripheral surface of the connecting frame 3, the two corrosion blocks 4 are both arc-shaped, and the two corrosion blocks 4 are wrapped on the bottom surface of the reducing groove 42 from opposite sides. Two block-shaped coupling bodies 41 are integrally formed in the diameter-reducing groove 42 of the coupling holder 3, and the coupling bodies 41 are arranged in the radial direction of the diameter-reducing groove 42. The two ends of the corrosion block 4 are respectively attached to the surfaces of the two connecting bodies 41, and the corrosion block 4 is connected and fixed to the connecting frame 3 by fixing bolts penetrating through the end parts of the corrosion block 4 and the connecting bodies 41.

The submersible pump further comprises a filter frame 51, wherein a filter screen 5 is arranged at the filter frame 51, and the filter frame 51 is also used as a water inlet of the submersible pump. The upper end of the filter frame 51 is connected with a connecting cylinder 6, the connecting cylinder 6 is connected with the lower end of a water pump shell 9 through a hoop, the upper end of the water pump shell 9 is used as a water outlet, and the lower end of the filter frame 51 is connected with the upper end of the connecting frame 3 through an axial bolt.

Referring to fig. 3 and 7, an intermediate shaft 61 is provided between the drive shaft 31 and the water pump shaft 91, and the intermediate shaft 61 is located at the position of the coupling cylinder 6. The two ends of the intermediate shaft 61 are respectively injection molded with a rubber head 62 made of rubber, the rubber head 62 is also connected with a coupling head 63, and the two coupling heads 63 are respectively in threaded connection with the water pump shaft 91 and the transmission shaft 31. The outer peripheral surfaces of two opposite ends of the connecting head 63 and the intermediate shaft 61 are respectively provided with a connecting flange in a protruding manner, a plurality of through holes are arranged in the connecting flange, the connecting flange is positioned in the rubber head 62, and the material forming the rubber head 62 enters the through holes.

Referring to fig. 1 and 9, in order to ensure the radial stability of the submersible pump during operation, a hoop 8 made of an elastic material, which is generally a rubber material, is sleeved on the outer circumferential surface of the connecting cylinder 6. The 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, and the supporting blocks 7 are uniformly distributed in the circumferential direction of the hoop 8. If the water source is in a deep well structure, after the submersible pump is lowered into the deep well, the outer end part of the supporting block 7 is supported on the well wall. The cylindrical body can also be fixedly arranged at a water source place, and the submersible pump with the hoop 8 and the supporting block 7 is placed in the cylindrical body, so that the outer end part of the supporting block 7 is supported on the inner wall surface of the cylindrical body, thereby realizing the radial fixation of the submersible pump and ensuring the stable work of the submersible pump.

In fig. 9, in order to adapt the supporting block 7 to the supporting of wells or cylindrical bodies with different inner diameters, a plurality of indexing scores 71 arranged in pairs are arranged on the outer side surface of the supporting block 7, the indexing scores 71 are arranged along the axial direction of the hoop 8, and two indexing scores 71 in one pair are symmetrically arranged on two opposite sides of the supporting block 7. The cross section of the indexing nick 71 is in a V shape, and the supporting block 7 can be cut off by a knife from the position of the indexing nick 71 or directly removed by manual pulling, so that the size of the supporting block 7 in the radial direction of the submersible pump is shortened. The positions of the indexing notches 71 on different support blocks 7 correspond to each other one by one, so that when the support blocks 7 need to be cut, all the support blocks 7 can be cut in a uniform size only by counting the indexing notches 71 or operating according to the marks corresponding to the indexing notches 71.