CN210599471U

CN210599471U - Rotor component of reliable submersible pump

Info

Publication number: CN210599471U
Application number: CN201920992188.0U
Authority: CN
Inventors: 王泽兵; 江劲松; 唐建迎; 徐彦鹏; 蒋世宏; 仵磊磊; 刘润发; 刘耀成
Original assignee: Guangzhou Xinheng Pump Manufacturing Co ltd
Current assignee: Guangzhou Xinheng Pump Manufacturing Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-05-22
Anticipated expiration: 2029-06-27

Abstract

The utility model provides a rotor component of a reliable submersible pump, which comprises an end cover, a cylinder body, a motor extension shaft, a first-level sand throwing cover, an impeller chamber and a water inlet section connected with a flow deflector, wherein the motor is arranged below the water inlet section to reduce the vibration and the noise of the operation of the pump, a cooling and lubricating cavity is formed between the water inlet section, the cylinder body and the end cover, a pressure regulating cavity is formed between the impeller chamber and the water inlet section and is provided with a cooling hole, a pressure regulating hole and a flushing hole which are respectively communicated with the cooling and lubricating cavity, the pressure regulating hole and the flushing hole, so that the rotor component can realize cooling and lubricating, flushing and impeller clearance adjustment, the first-level sand throwing cover is positioned in the cooling and lubricating cavity and is arranged between the water inlet section and the motor, and is pressed by a shaft sleeve matched with the motor extension shaft through the water inlet section, the balance of residual axial force can be realized through the, the service life of the motor bearing and the rotor part is prolonged.

Description

Rotor component of reliable submersible pump

Technical Field

The utility model relates to a immersible pump technical field especially relates to a rotor part of reliable type immersible pump.

Background

The submersible pump is a widely-used general machine, is used as a large-flow low-lift pump, and has a large demand in the sewage treatment market.

The immersible pump of prior art sets up the motor in the lifting pipe, and the motor is located the top of the section of intaking, pumps the medium and flows through the motor to adopt motor housing external cooling or casing internal recycle cooling structure. The medium directly surrounds the motor to flow, so that the abrasion of the medium containing a large amount of impurities such as silt or hard particles to the motor shell is very large, and the motor is easy to damage; meanwhile, due to the large size of the motor, the pumping medium is blocked in the water raising pipe or the shaft, and the medium flows to generate vortex, so that the hydraulic efficiency of the submersible pump system device is low, the operation efficiency of the pump system device is low, the operation energy consumption of the pump system device is large, energy is not saved, and the use and operation cost is high. And the medium blockage and the vortex can cause the water pump to vibrate, so that the running vibration and the noise of the pump are large. Meanwhile, the cable of the motor is directly placed in the water lifting pipe, the abrasion or aging fracture of the cable is easily caused by silt or high-temperature medium in the medium, the electric leakage risk is generated, the motor is very dangerous, and the safety factor is low.

At present, the axial force that the water pump operation produced balances through seting up the balancing hole on the impeller, but when the axial force was great, when the balancing hole can not balanced completely, remaining axial force acted on the rotor part, made motor bearing and rotor part atress, influenced the work of rotor part, damaged motor bearing, influenced motor bearing's life.

SUMMERY OF THE UTILITY MODEL

To the weak point among the above-mentioned prior art, the utility model aims at providing a rotor part of reliable type immersible pump, but the remaining axial force that the balanced pump operation produced improves motor bearing's life to can carry out cooling lubrication to the rotor part.

In order to solve the technical problem, the utility model provides a rotor part of reliable type immersible pump, including end cover, barrel, motor extension shaft, one-level sand throwing lid, impeller chamber and be used for the water inlet section of being connected with the baffle, the water inlet section, the barrel, the end cover connects gradually from top to bottom, and form the cooling lubrication chamber between the water inlet section, barrel and the end cover, be equipped with on the end cover with cooling hole and the wire outlet of cooling lubrication chamber intercommunication, the motor is connected in the barrel, the upper and lower both ends of motor extension shaft are connected respectively the impeller, the motor, the water inlet section passes through bearing and axle sleeve and the motor extension shaft cooperates, the impeller is located the top of water inlet section, the impeller chamber is located the impeller with between the water inlet section;

the primary sand-throwing cover is sleeved on the motor lengthened shaft, a shaft shoulder matched with the primary sand-throwing cover is arranged on the motor lengthened shaft, the primary sand-throwing cover is positioned between the shaft sleeve and the motor, and the shaft sleeve compresses the primary sand-throwing cover.

Preferably, a pressure detection probe is arranged in the cooling and lubricating cavity.

As a preferred scheme, the sand throwing device further comprises a second-stage sand throwing cover sleeved on the motor lengthened shaft, a shaft shoulder matched with the second-stage sand throwing cover is arranged on the motor lengthened shaft, the second-stage sand throwing cover is positioned above the shaft sleeve, and a round nut is arranged above the second-stage sand throwing cover.

Preferably, the cross sections of the first-stage sand throwing cover and the second-stage sand throwing cover are both trapezoidal, and a pressure bearing groove is formed in the bottom side of the second-stage sand throwing cover.

Preferably, the upper part and the lower part of the motor are respectively connected with a temperature detection probe.

As a preferred scheme, the water inlet section is provided with a flushing hole communicated with the bearing.

As a preferred scheme, an annular groove communicated with the flushing hole is formed in the water inlet section, a lubricating groove is formed in the bearing, a liquid inlet hole is formed in the bearing, and the flushing hole, the annular groove, the liquid inlet hole and the lubricating groove are sequentially communicated.

Preferably, the liquid inlet hole is arranged on the bearing in an inclined upward direction, and a projection of the opening direction of the liquid inlet hole on the cross section of the bearing forms a certain included angle with the radial direction of the bearing.

As a preferred scheme, the sand throwing machine further comprises a mechanical seal and a mechanical seal cover which are connected to the motor lengthening shaft, a motor cover is connected to the motor, the mechanical seal cover is located below the primary sand throwing cover, the mechanical seal cover is connected to the upper side of the motor cover to form a sealed mechanical seal cavity, the mechanical seal is located in the mechanical seal cavity, and a water leakage detection probe, a pressure detection probe and a temperature detection probe are arranged at the bottom of the mechanical seal cavity.

As a preferred scheme, a pressure regulating cavity is formed between the impeller chamber and the water inlet section, and the water inlet section is provided with a pressure regulating hole communicated with the pressure regulating cavity.

The utility model has the advantages as follows:

1. the utility model discloses a form the cooling lubrication chamber between the section of intaking, barrel, the end cover that set gradually from top to bottom, the motor sets up in the barrel, sets up the motor in the below of section of intaking, does not set up in the pumping pipe, can reduce the external diameter of pumping pipe, avoids the motor to lead to pumping medium to produce and blocks up and swirl to guarantee pump chamber and pumping medium flow's in the pumping pipe stability and smoothness nature; cooling lubricating liquid can be filled into the cooling lubricating cavity through the cooling hole in the end cover, and the rotor component is cooled and lubricated and the cooling lubricating cavity is cleaned; when the rotor component is subjected to the residual axial force, pressurized cooling and lubricating liquid is filled into the cooling and lubricating cavity through the cooling hole, the pressurized cooling and lubricating liquid flows out of the bearing to the water inlet section through the primary sand-throwing cover, and the pressurized cooling and lubricating liquid has upward lifting force on the primary sand-throwing cover, so that the residual axial force of the pump during operation can be balanced, the stress of the motor bearing and the rotor component is reduced, and the service life of the motor bearing and the rotor component is prolonged; in addition, the cooling and lubricating cavity is filled with a medium, the perpendicularity of a pump set of the water pump is ensured by the gravity of the medium, the running swing of the water pump is reduced, the problems of vibration and noise during the use and running of the pump in the prior art are solved, the running safety and reliability of the pump are improved, and the service life of the pump is prolonged.

2. The utility model discloses set up pressure detection probe in the cooling-lubrication chamber for the pressure in the monitoring cooling-lubrication chamber is convenient for in time carry on the balanced pressure of the cooling-lubrication liquid that fills into of residual axial force. The utility model discloses still set up the second grade and thrown husky lid, when the cooling lubrication liquid of pressure boost flows from the bearing through the cooling lubrication chamber, can throw husky lid through the second grade, the cooling lubrication liquid of pressure boost has ascending power of lifting up to throwing husky lid, further balanced residual axial force, improves balanced efficiency. The upper portion, the middle part, the lower part of motor set up temperature detecting probe, are convenient for monitor the temperature of rotor part, in time cool off and the shut down, guarantee the safe operation of pump, improve the life of rotor part. The flushing hole connected with the water inlet section can be connected with a flushing pipe to be filled with flushing liquid to flush the bearing and the shaft sleeve, so that accumulated silt in the medium which is generated by instantaneous backflow of the medium after shutdown can be effectively flushed out, and the shaft sleeve and the bearing are ensured to be clean. The mechanical seal is arranged below the first-level sand throwing cover, the damage of media to the mechanical seal can be reduced, the water leakage detection probe and the pressure detection probe can monitor the service condition of the mechanical seal, the mechanical seal can be maintained and replaced in time, the safe operation of a pump is guaranteed, and the temperature detection probe can be filled with cooling and lubricating liquid in time to cool the mechanical seal. There is the clearance between impeller and the impeller room, along with the use of pump, the clearance crescent can influence performance parameters such as flow, lift of water pump, the utility model discloses a set up the pressure regulating chamber between impeller room and the section of intaking, fill into the external medium of pressure boost through the pressure regulating hole, make the impeller room remove toward the direction of impeller, the adjustment clearance.

Drawings

Figure 1 is a schematic view of an embodiment of a rotor component.

Fig. 2 is an enlarged view of fig. 1A.

Fig. 3 is a schematic view of an end cap of an embodiment.

Fig. 4 is a schematic view of an impeller according to an embodiment.

FIG. 5 is a schematic view of the water inlet section of the embodiment.

Fig. 6 is a schematic view of a cartridge of an embodiment.

Fig. 7 is a schematic view of a motor of an embodiment.

FIG. 8 is a schematic view of an impeller chamber of an embodiment.

Fig. 9 is a schematic view of a sliding bearing of the embodiment.

The reference numerals are as follows;

in fig. 1:

in fig. 1: 1-end cap, 2-screw, 3-good type ring, 4-motor, 5-cylinder, 6-cooling lubrication cavity, 7-temperature detection probe, 8-pressure detection probe, 9-screw, 10-good type ring, 11-water inlet section, 12-pressure detection probe, 13-screw, 14-motor cap, 15-good type ring, 16-good type ring, 17-pressure adjustment cavity, 18-impeller chamber, 19-impeller, 20-screw, 21-gap, 22-water leakage detection probe, 23-temperature detection probe, 24-temperature detection probe, 25-second conduit, 26-screw, 27-seal ring, 28-seal cap, 29-cooling pipe, 30-screw, 31-seal ring, 32-a first conduit, 33-a sealing cover, 34-a screw, 35-a good assembly ring, 36-a temperature detection probe;

in fig. 2: 37-machine seal cavity, 38-machine seal, 39-good type ring, 40-screw, 41-liquid adding hole, 42-plug, 43-machine seal cover, 44-screw, 45-secondary sand throwing cover, 46-motor extension shaft, 47-flat key, 48-round nut, 49-pressure bearing groove, 50-bearing, 51-lubricating groove, 52-shaft sleeve and 53-primary sand throwing cover;

in fig. 3: 54-good type ring groove, 55-outlet hole, 56-cooling hole, 57-detection hole, 58-screw hole, 59-spigot, 60-spigot,

in fig. 4: 61-mouth ring, 62-cover plate groove, 63-screw hole, 64-balance hole, 65-screw hole,

in fig. 5: 66-pressure regulating hole, 67-flushing hole, 68-flow guiding rib, 69-bearing position, 70-good component type ring position, 88-ring groove,

in fig. 6: 71-probe interface, 72-probe interface, 73-supporting rib, 74-positioning ring, 75-good-assembly positioning ring,

in fig. 7: 76-screw thread, 77-screw thread, 78-key groove, 79-probe interface, 80-probe interface, 81-probe interface, 82-foot rest, 83-spigot and 87-positioning surface,

in fig. 8: an 84-good type ring groove, an 85-dowel hole, a 86-good type ring groove,

in fig. 9: 51-lubrication groove, 89-flushing hole, 90-included angle, 91-rotation angle and 92-transition circular arc.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 9, the rotor component of this embodiment includes an end cover 1, a cylinder 5, a motor 4, a motor extension shaft 46, a first-stage sand slinging cover 53, an impeller 19, an impeller chamber 18, and a water inlet section 11 for connecting with a flow guide body, the water inlet section 11 and the cylinder 5 are respectively connected to upper and lower sides of the end cover 1, a cooling and lubricating cavity 6 is formed between the water inlet section 11, the cylinder 6, and the end cover 1, a cooling hole 56 and a wire outlet hole 55 communicated with the cooling and lubricating cavity 6 are provided on the end cover 1, the motor 4 is connected in the cylinder 5, the impeller 19 and the motor 4 are respectively connected to upper and lower ends of the motor extension shaft 46, the water inlet section 11 is matched with the motor extension shaft 46 through a bearing 50 and a shaft sleeve 53, the impeller 19 is located above the water inlet section 11; the primary sand-throwing cover 53 is sleeved on the motor lengthened shaft 46, a shaft shoulder matched with the primary sand-throwing cover 53 is arranged on the motor lengthened shaft 46, the primary sand-throwing cover 53 is positioned between the shaft sleeve 53 and the motor 4, and the shaft sleeve 53 tightly presses the primary sand-throwing cover 53. In the embodiment, the cooling and lubricating cavity 6 is formed among the water inlet section 11, the barrel 5 and the end cover 1 which are sequentially arranged from top to bottom, the motor 4 is arranged in the barrel 5, the motor 4 is arranged below the water inlet section 11 and is not arranged in the water raising pipe, the outer diameter of the water raising pipe can be reduced, the situation that the pumping medium is blocked and swirled due to the motor is avoided, and the stability and the fluency of the flowing of the pumping medium in the pump cavity and the water raising pipe are ensured; cooling and lubricating liquid can be filled into the cooling and lubricating cavity 6 through the cooling hole 56 on the end cover 1, the rotor component is cooled and lubricated, and before the pump is started, the filled cooling and lubricating liquid can flush out the original medium in the cooling and lubricating cavity 6, so that the cooling and lubricating cavity is cleaned, and the independent flow of the cooling and lubricating liquid is ensured; when the rotor component is subjected to the residual axial force, the pressurized cooling and lubricating liquid is filled into the cooling and lubricating cavity 6 through the cooling hole 56, the pressurized cooling and lubricating liquid flows out of the bearing 50 into the water inlet section 11 through the primary sand-throwing cover 53, and the pressurized cooling and lubricating liquid has upward lifting force on the primary sand-throwing cover 53, so that the residual axial force of the pump during operation can be balanced, the stress of the motor bearing and the rotor component is reduced, and the service life of the motor bearing and the rotor component is prolonged; in addition, the cooling and lubricating cavity 6 is filled with a medium, the perpendicularity of a pump set of the water pump is ensured by the gravity of the medium, the running swing of the water pump is reduced, the problems of vibration and noise during the use and running of the pump in the prior art are solved, the running safety and reliability of the pump are improved, and the service life of the pump is prolonged.

Referring to fig. 1, the water inlet section 11 of the present embodiment is connected to the cylinder 5 by a screw 9, and an O-ring 10 is disposed between the water inlet section and the cylinder 5, an O-ring position 70 for placing the O-ring 10 is disposed on a lower side of the water inlet section 11, and a flow guide rib 68 for maintaining a stable flow state is further disposed in the water inlet section 11. The end cover 1 is connected with the cylinder body 5 through the screw 2, the O-shaped ring 3 is arranged between the end cover 1 and the cylinder body 5, the O-shaped ring position 75 for placing the O-shaped ring 3 is arranged on the bottom side of the cylinder body 5, and the end cover 1 is provided with a spigot 59 matched with the cylinder body 5. The cooling hole 56 is connected with the cooling pipe 29, and the rotor part is filled with clean cooling and lubricating liquid to the cooling and lubricating cavity 6 through the cooling pipe 29. The wire outlet hole 55 is connected with the first conduit 32, the cable of the motor 4 extends out of the water surface through the first conduit 32, the first conduit 32 is connected to the end cover 1 through the sealing cover 33 and the screw 30, and the sealing ring 31 is arranged between the first conduit 32 and the sealing cover 33. Referring to fig. 2, 4 and 7, the impeller 19 of the present embodiment is connected to the motor elongated shaft 46 through a screw thread, the upper end of the motor elongated shaft 46 is provided with a screw thread 76, the impeller 19 is provided with a screw hole 65, the impeller 19 and the motor elongated shaft 46 are further fixed through a screw 20, and the impeller 19 is provided with a screw hole 63. Referring to fig. 2, 5 and 7, the water inlet section 11 is provided with a bearing position 69 for mounting the bearing 50, the bearing 50 is further fixed with the water inlet section 11 through a screw 44, the shaft sleeve 52 is connected with the motor elongated shaft 46 through a flat key 47, the motor elongated shaft 46 is provided with a key groove 78 for placing the flat key 47, and the bearing 50 of the embodiment is a sliding bearing. Referring to fig. 1, 6 and 7, the upper portion of the motor 4 is provided with a positioning surface 87, the upper portion of the cylinder 5 is provided with a support rib 73, the inner side of the support rib 73 is provided with a positioning ring 74, and the motor 4 is positioned in the cylinder 5 by the cooperation of the positioning surface 87 and the positioning ring 87. Referring to fig. 1, 3 and 7, a foot rest 82 is arranged at the top of the motor 4 in this embodiment, the foot rest 82 is connected with the end cover 1 through a screw 34, a screw hole 58 is formed in the end cover 1, an O-ring groove 54 for placing an O-ring 35 is formed in the screw hole 58, a spigot 83 is formed in the foot rest 82, and a spigot 60 matched with the spigot 83 is formed in the end cover 1, so that the motor 4 is connected with the end cover 1, and the motor 4 is positioned and installed and stably in the cooling and lubricating cavity 6. Referring to fig. 1 and 4, a cover plate groove 62 matched with the guide vane body is arranged on the upper side of the impeller 19, a balance hole 64 communicating the cover plate groove 62 with the water inlet section 11 is further arranged on the impeller 19, and an opening ring 61 used for being matched with the guide vane body is further arranged outside the impeller 19.

Further, a pressure detection probe 8 is arranged in the cooling and lubricating cavity 6 and used for monitoring the pressure in the cooling and lubricating cavity 6, so that the balance of the residual axial force and the pressure of the filled cooling and lubricating liquid can be conveniently and timely carried out, and a temperature detection probe 7 is further arranged in the cooling and lubricating cavity 6 and used for monitoring the temperature of the cooling and lubricating liquid in the cooling and lubricating cavity 6 and carrying out timely cooling. Referring to fig. 6, the cylinder 5 is provided with a probe interface 72 for mounting the pressure detection probe 8 and a probe interface 71 for mounting the temperature detection probe 7.

In addition, referring to fig. 2, the rotor component of this embodiment further includes a second-stage sand-throwing cover 45 sleeved on the motor extension shaft 46, a shaft shoulder matched with the second-stage sand-throwing cover 45 is arranged on the motor extension shaft 46, the second-stage sand-throwing cover 45 is located above the shaft sleeve 52, a round nut 48 is arranged above the second-stage sand-throwing cover 45, referring to fig. 7, and a thread 77 for connecting the round nut 48 is arranged on the motor extension shaft 46. When the cooling and lubricating liquid of pressure boost flows out from bearing 50 through cooling and lubricating chamber 6, can pass through second grade sand throwing lid 45, the cooling and lubricating liquid of pressure boost has ascending power of lifting up to second grade sand throwing lid 45, further balances residual axial force, improves balanced efficiency. The cross-section of the one-level sand throwing cover 53 and the second-level sand throwing cover 45 of this embodiment is trapezoidal, so that the cooling and lubricating liquid has a larger stress area when impacting the sand throwing cover from bottom to top, the stress of the sand throwing cover is improved, the bearing groove 49 is arranged on the bottom side of the second-level sand throwing cover 45, the stress of the second-level sand throwing cover 45 is further improved, and the effect of balancing the residual axial force of the pressurizing and cooling and lubricating liquid is further enhanced.

Referring to fig. 1 and 7, the upper portion of the motor 4 of the present embodiment is connected to the temperature detection probe 23, the lower portion of the motor 4 is connected to the temperature detection probe 24, and the motor 4 is provided with a probe interface 79 for placing the temperature detection probe 23 and a probe interface 81 for placing the temperature detection probe 24. The temperature detection probe 23 and the temperature detection probe 24 can monitor the temperature condition of the bearing in the motor 4, and when the temperature is too high, cooling lubricating liquid can be filled into the cooling lubricating cavity 6 in time for cooling, so that the safe operation of the pump is ensured, the motor bearing is prevented from working at too high temperature, and the service life of the motor bearing is prolonged. The end cover 1 is provided with a detection line hole 57 for the connection line of the temperature detection probe 23 and the temperature detection probe 24 to pass through, the detection line hole 56 is connected with the second wire conduit 25, the second wire conduit 25 is connected on the end cover 1 through a sealing cover 28 and a screw 26, and a sealing ring 27 is arranged between the second wire conduit 25 and the sealing cover 28.

Referring to fig. 2, 5 and 9, the water inlet section 11 is provided with a flushing hole 67 communicating with the bearing 50. The annular groove 88 communicated with the flushing hole 67 is formed in the water inlet section 11, the lubricating groove 51 is formed in the bearing 50, the liquid inlet hole 89 is formed in the bearing 50, the flushing hole 67, the annular groove 88, the liquid inlet hole 89 and the lubricating groove 88 are sequentially communicated, the flushing pipe can be connected to the flushing hole 67, flushing liquid enters the bearing 50 through the flushing hole 67, the annular groove 88 and the liquid inlet hole 89, the bearing 50 can be lubricated and flushed, the shaft sleeve 52 and the secondary sand throwing cover 45 can be flushed, accumulated silt in a medium generated by instantaneous backflow of the medium after shutdown can be effectively flushed out, and the cleanness of the bearing 50, the shaft sleeve 52 and the secondary sand throwing cover 45 is guaranteed. In this embodiment, the liquid inlet 89 is disposed on the bearing 50 in an inclined upward direction, and a projection of the opening direction of the liquid inlet 89 on the cross section of the bearing 50 forms a certain included angle with the radial direction of the bearing 50, so that the flushing liquid can be lubricated and flushed to the corner of the bearing 50, and offset of the flushing liquid is avoided. Lubrication groove 88 corresponds with the quantity of feed liquor hole 89, and lubrication groove 88 and feed liquor hole 89 circumference, evenly set up on bearing 50, and lubrication groove 88 and feed liquor hole 89 can be respectively for 4 ~ N, and this embodiment has set up 6 lubrication grooves 88 and 6 feed liquor holes 89. The radial included angle 90 between the projection of the liquid inlet hole 89 on the axial section of the bearing 50 and the bearing 50 is 0-30 degrees, the liquid inlet hole 89 is twisted along the shaft body relative to the bearing 50 by an angle, the liquid inlet holes 89 of the embodiment rotate along the forward direction, and the rotation angle 91 is 0-60 degrees. The liquid inlet 89 may be formed in the bearing 50 either clockwise or counterclockwise. Both ends of the liquid inlet hole 89 are also provided with transition arcs 91, which is beneficial to smooth flowing of flushing liquid.

Referring to fig. 1 and 2, the rotor component further includes a mechanical seal 38 and a mechanical cover 43 connected to the motor extension shaft 46, the motor 4 is connected to the motor cover 14, the mechanical cover 43 is located below the first-stage sand-throwing cover 53, the mechanical cover 43 is located above the motor cover 14, the mechanical cover 43 and the motor cover 14 form a sealed mechanical seal cavity 37, the mechanical seal 38 is located in the mechanical seal cavity 37, and the bottom of the mechanical seal cavity 37 is provided with the water leakage detection probe 22, the pressure detection probe 12 and the temperature detection probe 36. The motor cover 14 of the embodiment is connected to the upper side of the motor 4 through a screw 13, the machine cover 43 is connected to the upper side of the motor cover 14 through a screw 40, an O-ring 39 is arranged between the two, and the motor cover 14 is provided with a probe interface 80 for connecting the temperature detection probe 36. The mechanical seal cover 43 is provided with a liquid adding hole 41, lubricating oil of the mechanical seal 38 is poured into the mechanical seal cavity 37 from the liquid adding hole 41, and then the mechanical seal cavity is sealed by a plug 42. The mechanical seal 38 is arranged below the primary sand-throwing cover 53, and the damage of media to the mechanical seal 38 can be reduced. After long-time operation and use, the mechanical seal 38 can be aged or damaged, the medium pumped by the pump or the cooling lubricating liquid in the cooling lubricating cavity 6 can enter the machine seal cavity 37 to be mixed with the machine seal lubricating liquid, because the density of the pumped medium or the cooling lubricating liquid is greater than that of the machine seal lubricating liquid, the pumped medium or the cooling lubricating liquid can be deposited at the bottom of the machine seal cavity 37, the water leakage detection probe 22 detects a signal, the water pump can be continuously operated and used, when the leakage medium reaches a certain amount, the pressure detection probe 12 detects that a pressure value reaches a set value, the water pump stops operating, maintenance and replacement are carried out, and the safe operation of the pump is ensured. The temperature detecting probe 36 can be filled with cooling lubricant in time to cool the mechanical seal 38. The connection lines of the water leakage detecting probe 22, the pressure detecting probe 12 and the temperature detecting probe 36 extend out of the water surface through the second conduit 25 connected through the detecting wire hole 56.

Referring to fig. 1, 5 and 8, a pressure regulating cavity 17 is formed between the impeller chamber 18 and the water inlet section 11, and the water inlet section 11 is provided with a pressure regulating hole 66 communicated with the pressure regulating cavity 17. In the embodiment, an O-ring 15 is arranged between the impeller chamber 18 and the water inlet section 11, an O-ring groove 86 for placing the O-ring 15 is arranged on the lower side of the impeller chamber 18, and an O-ring groove 84 and a pin hole 85 for placing an O-ring 16 matched with the guide vane body are also arranged on the lower side of the impeller chamber 18. There is the clearance 21 between impeller 19 and the impeller chamber 18, along with the use of pump, clearance 21 increases gradually, can influence performance parameters such as the flow, the lift of water pump, and this embodiment is through setting up pressure regulating cavity 17 between impeller chamber 18 and the section of intaking 11, fills the external medium of pressure boost through pressure regulating hole 66, makes impeller chamber 18 move to the direction of impeller 19, adjusts clearance 21.

In summary, a cooling and lubricating cavity 6 is formed among the water inlet section 11, the cylinder 5 and the end cover 1 which are sequentially arranged from top to bottom of the rotor component of the embodiment, the motor 4 is arranged in the cylinder 5, the water inlet section 11 is matched with the motor extension shaft 46 through the bearing 50 and the shaft sleeve 53, and a primary sand-throwing cover 53 is arranged between the shaft sleeve 53 and the motor 4; the motor 4 is arranged below the water inlet section 11 and is not arranged in the water pumping pipe, so that the outer diameter of the water pumping pipe can be reduced, the pumping medium is prevented from being blocked and swirled due to the motor, and the stability and the fluency of the flow of the pumping medium in the pump cavity and the water pumping pipe are ensured; cooling and lubricating liquid can be filled into the cooling and lubricating cavity 6 through the cooling hole 56 on the end cover 1, the rotor component is cooled and lubricated, and before the pump is started, the filled cooling and lubricating liquid can flush out the original medium in the cooling and lubricating cavity 6, so that the cooling and lubricating cavity is cleaned, and the independent flow of the cooling and lubricating liquid is ensured; when the rotor component is subjected to the residual axial force, the pressurized cooling and lubricating liquid is filled into the cooling and lubricating cavity 6 through the cooling hole 56, the pressurized cooling and lubricating liquid flows out of the bearing 50 into the water inlet section 11 through the primary sand-throwing cover 53, and the pressurized cooling and lubricating liquid has upward lifting force on the primary sand-throwing cover 53, so that the residual axial force of the pump during operation can be balanced, the stress of the motor bearing and the rotor component is reduced, and the service life of the motor bearing and the rotor component is prolonged; in addition, the cooling and lubricating cavity 6 is filled with a medium, the perpendicularity of a pump set of the water pump is ensured by the gravity of the medium, the running swing of the water pump is reduced, the problems of vibration and noise during the use and running of the pump in the prior art are solved, the running safety and reliability of the pump are improved, and the service life of the pump is prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The rotor component of the reliable submersible pump is characterized by comprising an end cover, a cylinder, a motor lengthened shaft, a primary sand throwing cover, an impeller chamber and a water inlet section, wherein the water inlet section, the cylinder and the end cover are sequentially connected from top to bottom, a cooling and lubricating cavity is formed among the water inlet section, the cylinder and the end cover, the end cover is provided with a cooling hole and a wire outlet hole which are communicated with the cooling and lubricating cavity, the motor is connected in the cylinder, the upper end and the lower end of the motor lengthened shaft are respectively connected with the impeller and the motor, the water inlet section is matched with the motor lengthened shaft through a bearing and a shaft sleeve, the impeller is positioned above the water inlet section, and the impeller chamber is arranged between the impeller and the water inlet section;

2. A rotor component of a reliable submersible pump according to claim 1, wherein a pressure sensing probe is provided in the cooling and lubrication cavity.

3. A rotor component of a reliable submersible pump according to claim 1, further comprising a secondary sand-throwing cover sleeved on the motor extension shaft, wherein a shaft shoulder matched with the secondary sand-throwing cover is arranged on the motor extension shaft, the secondary sand-throwing cover is positioned above the shaft sleeve, and a round nut is arranged above the secondary sand-throwing cover.

4. A rotor component of a reliable submersible pump according to claim 3, wherein the sections of the first-stage sand slinging cover and the second-stage sand slinging cover are both trapezoidal, and the bottom side of the second-stage sand slinging cover is provided with a pressure bearing groove.

5. A rotor component of a reliable submersible pump according to claim 1, wherein the upper and lower parts of the motor are connected with temperature detection probes, respectively.

6. A rotor component of a reliable submersible pump according to claim 1, wherein the water inlet section is provided with flushing holes communicating with the bearing.

7. A rotor component of a reliable submersible pump according to claim 6, wherein the water inlet section is provided with an annular groove communicated with the flushing hole, the bearing is internally provided with a lubricating groove, the bearing is provided with a liquid inlet hole, and the flushing hole, the annular groove, the liquid inlet hole and the lubricating groove are communicated in sequence.

8. A rotor component of a reliable submersible pump according to claim 7, wherein the liquid inlet hole is arranged obliquely upwards on the bearing, and a projection of the opening direction of the liquid inlet hole on a section of the bearing forms an included angle with the radial direction of the bearing.

9. A rotor component of a reliable type submersible pump according to claim 1, further comprising a mechanical seal and a mechanical cover connected to the motor extension shaft, wherein a motor cover is connected to the motor, the mechanical cover is located below the primary sand-throwing cover, the mechanical cover is connected to the upper side of the motor cover to form a sealed mechanical seal cavity, the mechanical seal is located in the mechanical seal cavity, and a water leakage detection probe, a pressure detection probe and a temperature detection probe are arranged at the bottom of the mechanical seal cavity.

10. A rotor component of a reliable submersible pump according to claim 1, wherein a pressure regulating cavity is formed between the impeller chamber and the water inlet section, and a pressure regulating hole communicated with the pressure regulating cavity is formed in the water inlet section.