CN113014029B

CN113014029B - Shielding water-cooled permanent magnet pump motor for high-speed well

Info

Publication number: CN113014029B
Application number: CN202110244344.7A
Authority: CN
Inventors: 张文敏
Original assignee: Zhejiang Zheshui Industry And Trade Co ltd
Current assignee: Zhejiang Zheshui Industry And Trade Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-09-14
Anticipated expiration: 2041-03-05
Also published as: CN113014029A

Abstract

The invention discloses a shielding water-cooled permanent magnet high-speed well pump motor, which has good cooling and heat dissipation effects, good operation stability and long service life, and the technical scheme is characterized in that the shielding water-cooled permanent magnet high-speed well pump motor comprises a shell, a stator, a rotor and a rotating shaft, wherein the rotor is fixed on the rotating shaft, an upper end cover and a lower end cover are respectively arranged at two ends of the shell, an upper shaft hole matched with the rotating shaft is arranged on the upper end cover, a lower shaft hole matched with the rotating shaft is arranged on the lower end cover, the shell is of an inner-outer double-layer structure, a shielding cavity is formed between the two layers of shells, the stator is arranged in the shielding cavity, resin is filled in the shielding cavity, an axial thrust component is arranged between the lower end of the rotor and the lower end cover, a pumping impeller positioned at the outer side of the lower end cover is also arranged at the lower end of the rotating shaft, a flow guide channel is arranged in the lower shaft hole, a water passing flow channel is arranged at the outer side of the rotor, and a water outlet is arranged on the upper end cover, and the flow guide channel, the water passing channel and the water outlet are communicated in sequence, so that the invention is suitable for the technical field of motors.

Description

Shielding water-cooled permanent magnet pump motor for high-speed well

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a shielding water-cooled permanent magnet pump motor for a high-speed well.

Background

Some well pump motors are simply placed in water to dissipate heat, and some well pump motors adopt the content disclosed in the prior application CN201821221539.X, so that water can be pumped in the motors, but the structure is complex, threads are required to be arranged on the inner wall of a shielding sleeve, impeller blades are required to be arranged on the outer wall of a rotor to realize the flow of the water, the flow speed is low and is not ideal in practical use, and impurities such as silt in water easily enter the motors to cause internal abrasion; in addition, the water pump needs to be at a higher rotating speed in order to obtain a higher lift, but the running stability of a motor in the water pump is reduced along with the increase of the rotating speed, and the performance of the water pump is influenced, so that how to effectively improve the running stability of the motor is particularly important; further improvements are therefore desirable.

Disclosure of Invention

The invention aims to provide a shielding water-cooled permanent magnet pump motor for a high-speed well, which has good cooling and heat dissipation effects, good operation stability and long service life.

The purpose of the invention is realized as follows: the utility model provides a pump motor for shielding water-cooled permanent magnetism high-speed well, includes casing, stator, rotor and pivot, and on the rotor was fixed in the pivot, the both ends of casing still were equipped with upper end cover and lower end cover respectively, the upper end cover on be equipped with the upper shaft hole of pivot adaptation, be equipped with on the lower end cover with the lower shaft hole of pivot adaptation, its characterized in that: the casing is inside and outside bilayer structure, forms the shielding chamber between the two-layer casing, and the stator is installed in the shielding chamber, and the shielding intracavity is filled with the resin, is equipped with axial thrust subassembly between the lower extreme of rotor and the lower end cover, and the lower extreme of pivot still is equipped with the impeller that draws water that is located the lower end cover outside, is equipped with the water conservancy diversion way in the lower shaft hole, and the outside of rotor is equipped with water flow channel, is equipped with the delivery port on the upper end cover, and water conservancy diversion way, water flow channel and delivery port communicate in proper order.

The invention is further configured to: the axial thrust assembly comprises a thrust seat, a thrust plate and a friction disc which are sequentially overlapped from bottom to top, the thrust seat is fixed on the lower end cover, a spherical concave surface is arranged on the bottom surface of the thrust plate, a spherical convex surface matched with the spherical concave surface is arranged on the thrust seat, a positioning block is further arranged on the bottom surface of the thrust plate, and a positioning groove is formed in the thrust seat.

The invention is further configured to: the lower shaft hole is internally provided with a lower graphite sleeve, the diversion channel is arranged on the inner wall of the lower graphite sleeve, the upper shaft hole is internally provided with an upper graphite sleeve, the upper graphite sleeve is internally provided with a first diversion trench, the two ends of the rotating shaft are provided with ceramic coatings which are respectively matched with the upper graphite sleeve and the lower graphite sleeve, and the upper end surface of the thrust plate is also provided with a plurality of second diversion trenches.

The invention is further configured to: the pivot upper end still is equipped with as for the husky subassembly that keeps off in the upper end cover outside, keeps off husky subassembly including fixed cover and get rid of husky ring, and the one end of fixed cover is installed on the upper end cover, and is equipped with the skeleton oil blanket in the fixed cover, gets rid of husky ring and installs on the other end of fixed cover, gets rid of and is equipped with wear-resisting ring in the husky ring.

The invention is further configured to: and the bottom of the lower end cover is also provided with a filtering component.

The invention is further configured to: the filtering component comprises an outer cover plate, filter cotton and an inner baffle which are arranged in sequence, and the outer cover plate and the inner baffle are both arranged on the lower end cover.

The invention is further configured to: the filter assembly comprises an outer frame and a gear box arranged in the outer frame, an upper transmission shaft and a lower transmission shaft are respectively connected to the gear box, a reduction gear set used for connecting the upper transmission shaft and the lower transmission shaft is further arranged in the gear, the upper transmission shaft is connected with the rotating shaft through a floating type coupler, a first clutch device used for controlling the floating type coupler to axially abut against or separate from the rotating shaft is arranged at the bottom end of the rotating shaft, the lower section of the outer frame is a filter area, a plurality of filter meshes are arranged on the peripheral edge of the filter area, and a filter core layer positioned at the top of the filter area is arranged on the lower transmission shaft;

the filter core layer includes cotton filter cloth and sets up the mount on cotton filter cloth both sides, the filter core layer is the inverted cone type structure, the inner of mount is fixed in on the underdrive axle and rotates along with the rotation of underdrive axle, the periphery of mount still is equipped with the subassembly of decontaminating along last, the subassembly of decontaminating includes that base and cover establish the sliding sleeve on the base, still be equipped with ejecting spring between base and the sliding sleeve, be equipped with on the outer wall of sliding sleeve with the radial brush hair of contradicting of filter mesh hole, still be equipped with in the filtering area and keep off the ring with the graphite of mount periphery along the top contradicting.

The invention is further configured to: the floating type coupler comprises a core shaft and a floating sleeve, the bottom end of the core shaft is arranged in the floating sleeve, the top end of the upper transmission shaft is provided with a floating hole, the bottom end of the floating sleeve is arranged in the floating hole, a lower floating spring is arranged in the floating hole, the bottom end of the core shaft is also provided with a limiting ring, the core shaft is sleeved with a lock cap arranged in the floating sleeve, the core shaft is also sleeved with a reset spring, two ends of the reset spring are respectively abutted against the limiting ring and the lock cap, the top end of the floating sleeve is also provided with an end face cam, and the core shaft is also provided with a lug axially abutted against the end face cam;

the first clutch device comprises a first electromagnet and a magnetic ring, the first electromagnet annularly surrounds the lower end of the rotating shaft, the first electromagnet is fixed on the lower end cover through a support, the magnetic ring is annularly fixed at the top end of the mandrel, and an upper floating spring which is abutted against the magnetic ring is further arranged on the support; when the first electromagnet is electrified, attraction force is generated on the magnetic ring, and the mandrel is axially abutted against the rotating shaft, so that the rotating shaft drives the mandrel to rotate; when the first electromagnet is powered off, the mandrel and the rotating shaft are separated from each other.

The invention is further configured to: the reduction gear set comprises a main gear arranged on the upper transmission shaft and an auxiliary gear arranged on the lower transmission shaft, the reduction gear set comprises a forward rotation gear set and a reverse rotation gear set, the forward rotation gear set comprises a first gear, a second gear and a first wheel shaft, the first gear and the second gear are respectively arranged at two ends of the first wheel shaft, the first gear is meshed with the main gear, the second gear is meshed with the auxiliary gear, the reverse rotation gear set comprises a third gear, a fourth gear, a fifth gear, a second wheel shaft and a third wheel shaft, the third gear and the fourth gear are arranged at two ends of the second wheel shaft, the third gear is also meshed with the main gear, the fifth gear is arranged in the reduction gear box through the third wheel shaft, and the fourth gear is meshed with the auxiliary gear through the fifth gear;

a second clutch device is arranged between the first gear and the first wheel shaft, a third clutch device is arranged between the third gear and the second wheel shaft, the second clutch device and the third clutch device both comprise a second electromagnet and a magnetic inner core, the second electromagnet is positioned on the end parts of the first wheel shaft and the second wheel shaft, an inner hole and a plurality of through holes radially penetrating through the inner hole are also arranged in the first wheel shaft and the second wheel shaft, the magnetic inner core is arranged in the inner hole, balls are arranged in the through holes, annular grooves matched with the balls are also arranged on the magnetic inner core, a plurality of inner slide ways matched with the balls are arranged on the inner wall of the inner hole, and positioning holes matched with the balls are arranged on the first gear and the second gear; when the second electromagnet is electrified, the second electromagnet generates magnetic force, the magnetic inner property is attracted upwards, and the magnetic inner property pushes the ball to slide outwards from the through hole and be clamped with the positioning hole; when the second electromagnet is powered off, the second electromagnet loses magnetic force, the magnetic inner core moves downwards to reset, and the ball falls into the ring groove along the inner slide way.

A control method of a shielding water-cooled permanent magnet high-speed well pump motor is characterized by comprising the following steps: the control method comprises a control system, wherein the control system comprises a control unit, a flow sensor arranged on a water outlet and an alarm module for abnormal alarm, the real-time flow detected by the flow sensor is set to be Q, and the minimum normal flow is set to be Q1;

the control method comprises the following steps;

l0, the control unit controls the motor to start, and after delaying for A seconds, the step enters the step L1;

l1, detecting the water flow by a flow sensor, and judging whether Q is more than or equal to Q1;

l2, when Q is less than Q1 in the step L1, the flow is over small, the phenomenon of blockage is possibly caused, the second electromagnet is electrified, the first electromagnet is electrified, the lower rotating shaft drives the filter core layer to rotate in the forward direction, the filter core layer is cleaned under the action of centrifugal force in the rotating process, and meanwhile, the cleaning component is used for cleaning filter meshes on the filter area; meanwhile, whether Q is more than or equal to Q1 is continuously judged within B seconds, wherein B is the electrifying time of the second electromagnet;

l3, when Q is more than or equal to Q1 in the step L1, the flow is normal;

l4, when the second electromagnet is electrified for B seconds in the step L2, and Q is more than or equal to Q1, the flow is normal, the first electromagnet is powered off, and the second electromagnet is powered off;

l5, when the second electromagnet is electrified for B seconds in the step L2 and Q is still smaller than Q1, the second electromagnet is powered off, and after C seconds, the third electromagnet is electrified, so that the lower rotating shaft drives the filter core layer to rotate reversely to perform secondary decontamination; meanwhile, whether Q is larger than Q1 is continuously judged within D seconds, wherein D is the electrifying time of the third electromagnet;

l6, when the third electromagnet is electrified within D seconds in the step L5, and Q is more than or equal to Q1, the flow is normal, the first electromagnet is powered off, and the third electromagnet is powered off;

l7, when the third electromagnet is electrified for D seconds in the step L5 and Q is less than Q1, the first electromagnet is powered off, the third electromagnet is powered off, and the alarm module gives an alarm;

wherein there is the number of times of decontaminating judgement unit in the unit interval in step L4, and the number of times of decontaminating judgement unit is including the count module of decontaminating that is used for the number of times of decontaminating to count and the timing module of decontaminating that is used for the timing of decontaminating, and the single time that the timing module of decontaminating presets is opened the timing time and is T, specifically includes following step:

s0, when the second electromagnet in the step L4 is electrified for B seconds, and Q is more than or equal to Q1, the step S1 is executed;

s1, adding 1 to the times of the decontamination counting module, and judging whether the decontamination timing module is started or not;

s2, when the decontamination timing module is started in the step S1, whether the starting time is T or not is judged; if the T times are met, clearing the times of the decontamination counting module, clearing the decontamination timing module, closing the decontamination counting module, and returning to the step S1; if not, go to step S3;

s3, judging whether the times of the decontamination counting module exceed N times within the T period of time; when the number of times of the decontamination counting module does not exceed N times, the method goes to step S4; when the number of times of the decontamination counting module exceeds N times, the method goes to step S5;

s4, powering off the first electromagnet and the second electromagnet, and then returning to the step L1;

s5, the first electromagnet is powered off, the second electromagnet is powered off, and the alarm module gives an alarm;

s6, when the cleaning timing module is not started in the step S1, the cleaning timing module starts to time, the times of the cleaning counting module are cleared, and the step S1 is returned.

By adopting the technical scheme, the axial thrust assembly has the function of automatic centering, is good in stability and not easy to deviate, and improves the rotation stability of the rotating shaft;

through the arrangement of the pumping impeller, when the rotor rotates, the rotating shaft drives the pumping impeller to rotate, so that pumping is realized, external water can sequentially flow through the flow guide channel, the water flowing channel and the water outlet, efficient cooling is realized for the interior of the motor, the working efficiency of the motor is improved, the electric energy loss is reduced, and the service life is prolonged;

by the arrangement of the filtering component, external silt can be prevented from entering the motor, and the blocking is not easy to prevent;

through the arrangement of the sand blocking assembly, impurities such as sand grains and the like can be further prevented from entering the motor;

through having the filtering component setting of self-discharging stifled function, can effectively solve inside impurity such as silt easily gets into the motor, perhaps the problem that traditional filter screen easily blockked up has effectively prolonged the life of water pump.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an axial thrust structure according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a stop block according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a thrust plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a sand stop assembly according to a first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 7 is a schematic structural view of a filter assembly according to a second embodiment of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7 according to the present invention;

fig. 9 is a schematic structural diagram of a floating coupling in the second embodiment of the present invention;

FIG. 10 is a schematic view of the engagement structure of the end cam and the projection of FIG. 9 according to the present invention;

FIG. 11 is a schematic structural view of a gearbox according to a second embodiment of the present invention;

FIG. 12 is an enlarged view of FIG. 11 at B in accordance with the present invention;

FIG. 13 is a logic control block diagram of a second embodiment of the present invention;

the reference numbers in the figures are: 1. a housing; 2. a rotor; 3. a rotating shaft; 4. an upper end cover; 5. a lower end cover; 6. an axial thrust assembly; 7. a water pumping impeller; 8. a flow guide way; 9. a water outlet; 10. a thrust block; 11. a thrust plate; 12. a friction disk; 13. a spherical convex surface; 14. positioning blocks; 15. positioning a groove; 16. a graphite sleeve is arranged; 17. mounting a graphite sleeve; 18. a second guiding gutter; 19. fixing a sleeve; 20. throwing sand rings; 21. framework oil seal; 22. a wear ring; 23. an outer cover plate; 24. filtering cotton; 25. an inner baffle; 100. an outer frame; 101. a gear case; 102. an upper transmission shaft; 103. a lower transmission shaft; 104. a floating coupling; 105. a filter core layer; 106. a base; 107. a sliding sleeve; 108. ejecting a spring; 109. brushing; 110. a graphite baffle ring; 111. a mandrel; 112. a floating sleeve; 113. a lower floating spring; 114. a limiting ring; 115. a lock cap; 116. a return spring; 117. an end cam; 118. a bump; 119. a first electromagnet ring; 120. a magnetic ring; 121. a main gear; 122. a pinion gear; 123. a first gear; 124. a second gear; 125. a first axle; 126. a third gear; 127. a fourth gear; 128. a fifth gear; 129. a fourth wheel axle; 130. a second electromagnet; 131. a magnetic inner core; 132. a ball bearing; 133. a ring groove; 134. an inner slideway.

Detailed Description

The invention is further described in the following with specific embodiments in conjunction with the accompanying drawings, see fig. 1-13:

the first embodiment is as follows:

the utility model provides a pump motor for shielding water-cooled permanent magnetism high-speed well, includes casing 1, stator, rotor 2 and pivot 3, and on rotor 2 was fixed in pivot 3, the both ends of casing 1 still were equipped with upper end cover 4 and lower end cover 5 respectively, be equipped with on the upper end cover 4 with the last shaft hole of 3 adaptations of pivot, be equipped with on the lower end cover 5 with the lower shaft hole of 3 adaptations of pivot, its characterized in that: casing 1 is inside and outside bilayer structure, forms the shielding chamber between two-layer casing 1, and the stator is installed in the shielding intracavity, and the shielding intracavity packing has the resin, is equipped with axial thrust subassembly 6 between the lower extreme of rotor 2 and the lower end cover 5, and the lower extreme of pivot 3 still is equipped with the impeller 7 that draws water that is located the 5 outsides of lower end cover, is equipped with water conservancy diversion way 8 in the lower shaft hole, and the outside of rotor 2 is equipped with water flow channel, is equipped with delivery port 9 on the upper end cover 4, and water conservancy diversion way 8, water flow channel and delivery port 9 communicate in proper order.

The stator is sealed in an independent space, and the shielding cavity is formed by a stainless steel shell and plays a role in efficient sealing; the axial thrust assembly 6 is used for improving the stability of the rotor 2 during rotation; through the setting of impeller 7 draws water for when rotor 2 rotates, pivot 3 drives impeller 7 and rotates, realizes drawing water, makes outside hydroenergy enough flow through water conservancy diversion way 8 in proper order, crosses water flow way and delivery port 9, realizes high-efficient cooling to the motor is inside, has improved the work efficiency of motor, has reduced the electric energy loss, has prolonged life.

The axial thrust assembly 6 comprises a thrust block 10, a thrust disc 11 and a friction disc 12 which are sequentially overlapped from bottom to top, the thrust block 10 is fixed on the lower end cover 5, a spherical concave surface is arranged on the bottom surface of the thrust disc 11, a spherical convex surface 13 matched with the spherical concave surface is arranged on the thrust block 10, a positioning block 14 is further arranged on the bottom surface of the thrust disc 11, and a positioning groove 15 is arranged on the thrust block 10.

The thrust block 10 and the lower end cover 5 can be of an integrated structure, and the spherical concave surface and the spherical convex surface 13 are matched, so that the thrust block can be automatically centered, the stability is good, the deviation is not easy to occur, and the rotation stability of the rotating shaft 3 is improved; through the arrangement of the positioning block 14 and the positioning groove 15, the relative circumferential rotation between the thrust disk 11 and the thrust block 10 can be avoided.

The lower shaft hole is internally provided with a lower graphite sleeve 16, the flow guide channel 8 is arranged on the inner wall of the lower graphite sleeve 16, the upper shaft hole is internally provided with an upper graphite sleeve 17, the upper graphite sleeve 17 is internally provided with a first flow guide groove, two ends of the rotating shaft 3 are respectively provided with a ceramic coating matched with the upper graphite sleeve 17 and the lower graphite sleeve 16, and the upper end surface of the thrust plate 11 is also provided with a plurality of second flow guide grooves 18.

The wear resistance between the rotating shaft 3 and the shaft hole is improved, the wear is reduced, the service life is prolonged, and the flow guide channel 8 is arranged on the inner wall of the graphite sleeve, namely, the graphite sleeve can be directly cooled by water flow, so that the cooling effect is good; the first diversion trench facilitates water flow to enter the upper graphite sleeve 17 and directly cool the upper graphite sleeve 17; the second guiding grooves 18 facilitate water flow to enter between the thrust plate 11 and the friction plate 12, and directly cool the space between the thrust plate and the friction plate, so that abrasion is reduced, and the service life is prolonged.

The upper end of the rotating shaft 3 is also provided with a sand blocking assembly arranged on the outer side of the upper end cover 4, the sand blocking assembly comprises a fixed sleeve 19 and a sand throwing ring 20, one end of the fixed sleeve 19 is installed on the upper end cover 4, a mechanical sealing ring is arranged in the fixed sleeve 19, the sand throwing ring 20 is installed at the other end of the fixed sleeve 19, and a wear-resisting ring 22 is arranged in the sand throwing ring 20.

Fixed cover 19 can adopt rigid material such as plastics, makes through mechanical seal ring's setting for seal structure between pivot 3 upper end and the last shaft hole, gets rid of inside husky ring 20 is used for preventing impurity such as sand grain gets into the motor, plays double seal's effect, and wear-resisting ring 22 is used for reducing to get rid of the rotating resistance between husky ring 20 and the fixed cover 19, reducing wear.

And the bottom of the lower end cover 5 is also provided with a filtering component which plays a role in filtering water flow entering the motor.

The filter assembly is including the outer apron 23 that sets gradually, cross filter pulp 24 and interior baffle 25, and outer apron 23 and interior baffle 25 are all installed on lower end cover 5, all have the water hole on outer apron 23 and the interior baffle 25, and filter pulp 24 through the non-woven fabrics, and the filter effect is good, and the water permeability is good.

Example two:

compare embodiment one, its difference lies in the filter assembly structure difference, and can arrange stifled control automatically, and specific content is as follows:

the filtering component comprises an outer frame 100 and a gear box 101 arranged in the outer frame 100, an upper transmission shaft 102 and a lower transmission shaft 103 are respectively connected to the gear box 101, a reduction gear set used for connecting the upper transmission shaft 102 and the lower transmission shaft 103 is further arranged in the gear, the upper transmission shaft 102 is connected with a rotating shaft 3 through a floating type coupler 104, a first clutch device used for controlling the floating type coupler 104 to axially abut against or separate from the rotating shaft 3 is arranged at the bottom end of the rotating shaft 3, a filtering area is arranged at the lower section of the outer frame 100, a plurality of filtering meshes are arranged on the peripheral edge of the filtering area, and a filtering core layer 105 positioned at the top of the filtering area is arranged on the lower transmission shaft 103;

because the motor is usually in a high-speed rotation state, the speed reduction gear set can play a speed reduction role, so that the rotation torque of the lower transmission shaft 103 can be improved; the floating coupler 104 is adopted, so that when the filter assembly is not required to be controlled, the floating coupler 104 is separated from the rotating shaft 3, and the influence on the operation of the motor is reduced; the filtering mesh holes on the outer frame 100 can be a compact mesh cover woven by metal wires to play a role of storing and filtering, and then secondary filtering is carried out by cotton filter cloth to achieve a role of efficient filtering.

Filter sandwich layer 105 and include cotton filter cloth and set up the mount on cotton filter cloth both sides, filter sandwich layer 105 is the inverted cone type structure, the inner of mount is fixed in on the underdrive shaft 103 and rotates along with the rotation of underdrive shaft 103, the periphery of mount still is equipped with the subassembly of decontaminating along last, the subassembly of decontaminating includes base 106 and the sliding sleeve 107 of cover on base 106, still be equipped with ejecting spring 108 between base 106 and the sliding sleeve 107, be equipped with on the outer wall of sliding sleeve 107 with the radial brush hair 109 of contradicting of filtration mesh, still be equipped with in the filtering area and keep off ring 110 with the graphite that the mount periphery was contradicted along the top.

The fixing frame can be a metal or plastic net rack and mainly plays a shaping role for the cotton filter cloth, the cotton filter cloth can be non-woven fabric, the filter core layer 105 is of an inverted cone structure, so that when the filter core layer 105 rotates, impurities are separated from the filter core layer 105 under the action of centrifugal force; the dirt cleaning components can be two symmetrical groups, and the filter screen is cleaned through bristles 109 on the dirt cleaning components; the ejection spring 108 facilitates the ejection of the bristles 109, so that the bristles have a telescopic amplitude in the radial direction, and the bristles are convenient to clean; graphite baffle ring 110 is fixed in on the filtering area inner wall, mainly used for avoiding rivers directly to flow to inside the motor along the clearance between trash cleaning component and the filtering area.

The floating type coupler 104 comprises a core shaft 111 and a floating sleeve 112, the bottom end of the core shaft 111 is installed in the floating sleeve 112, the top end of the upper transmission shaft 102 is provided with a floating hole, the bottom end of the floating sleeve 112 is installed in the floating hole, a lower floating spring 113 is arranged in the floating hole, the bottom end of the core shaft 111 is also provided with a limiting ring 114, the core shaft 111 is sleeved with a lock cap 115 installed in the floating sleeve 112, the core shaft 111 is also sleeved with a return spring 116, two ends of the return spring 116 are respectively abutted against the limiting ring 114 and the lock cap 115, the top end of the floating sleeve 112 is also provided with an end cam 117, and the core shaft 111 is also provided with a lug 118 axially abutted against the end cam 117;

the floating hole on the upper transmission shaft 102 and the floating sleeve 112 can axially slide with each other, but the circumferential limit is required to be carried out by the matched convex strip and groove in the circumferential direction; the principle of the floating coupling 104 is: under the normal state, under the action of the return spring 116, the end cam 117 on the floating sleeve 112 and the lug 118 on the bobbin are abutted against each other, and under the action of axial abutting force, when the mandrel 111 rotates, the floating sleeve 112 can also be driven to rotate, so that the floating sleeve 112 drives the upper transmission shaft 102 to rotate; when the filter assembly is abnormally locked, the floating sleeve 112 is blocked from rotating, and at the moment, the lug 118 slides relative to the end cam 117 to force the floating sleeve 112 to slide up and down in the floating hole; because the filter assembly is influenced by factors such as water flow impurities and the like, the problem of rotation blockage or unsmooth rotation may exist, the design of the floating type coupling 104 can avoid the direct influence on the rotation of the motor rotating shaft 3 caused by abnormal rotation blockage of the filter assembly, namely when the filter assembly is abnormal, the rotating shaft 3 can also normally rotate; the lower floating spring 113 plays a supporting role for the floating sleeve 112, so that the first clutch device is prevented from being failed due to overlarge axial distance between the mandrel 111 and the rotating shaft 3; an upper floating spring can be arranged between the bracket and the magnetic ring 120, so that the spindle 111 and the rotating shaft 3 are effectively separated when the first clutch device is in a power-off state; the magnetic ring 120 may be made of ferromagnetic material.

The first clutch device comprises a first electromagnet and a magnetic ring 120, the first electromagnet is annularly surrounded at the lower end of the rotating shaft, the first electromagnet is fixed on the lower end cover 5 through a support, the first electromagnet is fixed on the support, a through hole for the rotating shaft 3 to pass through is arranged on the support, and a wire guide groove can be formed in the support, so that a conductive wire of the first electromagnet is installed along the wire guide groove, passes through the lower end cover 5, enters the shielding cavity, and is led out together with the conductive wire of the stator; the bracket and the lower end cover 5 can be fixedly connected through fasteners such as screws and the like; the magnetic ring 120 is fixed at the top end of the mandrel 111 in a ring shape, and the bracket is also provided with an upper floating spring which is abutted against the magnetic ring 120; when the first electromagnet is electrified, attraction force is generated on the magnetic ring 120, and the spindle 111 is axially abutted against the rotating shaft 3, so that the rotating shaft 3 drives the spindle 111 to rotate; when the first electromagnet is de-energized, the spindle 111 and the rotary shaft 3 are separated from each other.

The reduction gear set comprises a main gear 121 mounted on the upper transmission shaft 102 and a sub-gear 122 mounted on the lower transmission shaft 103, the reduction gear set comprises a forward rotation gear set and a reverse rotation gear set, the forward rotation gear set comprises a first gear 123, a second gear 124 and a first axle 125, the first gear 123 and the second gear 124 are respectively mounted on two ends of the first axle 125, the first gear 123 is meshed with the main gear 121, the second gear 124 is meshed with the sub-gear 122, the reverse rotation gear set comprises a third gear 126, a fourth gear 127, a fifth gear 128, a second axle and a third axle, the third gear 126 and the fourth gear 127 are mounted on two ends of the second axle, the third gear 126 is also meshed with the main gear 121, the fifth gear 128 is mounted in the reduction gear box 101 through the third axle, and the fourth gear 127 is meshed with the sub-gear 122 through the fifth gear 128;

a second clutch device is arranged between the first gear 123 and the first wheel shaft 125, a third clutch device is arranged between the third gear 126 and the second wheel shaft, the second clutch device and the third clutch device both comprise a second electromagnet 130 and a magnetic inner core 131, the second electromagnet 130 is positioned on the end parts of the first wheel shaft 125 and the second wheel shaft, an inner hole and a plurality of through holes radially penetrating through the inner hole are also arranged in the first wheel shaft 125 and the second wheel shaft, the magnetic inner core 131 is arranged in the inner hole, balls 132 are arranged in the through holes, an annular groove 133 matched with the balls 132 is also arranged on the magnetic inner core 131, a plurality of inner slideways 134 matched with the balls 132 are arranged on the inner wall of the inner hole, and positioning holes matched with the balls 132 are arranged on the first gear 123 and the second gear 124; when the second electromagnet 130 is powered on, the second electromagnet 130 generates magnetic force to attract the magnetic property upwards, and the magnetic property pushes the ball 132 to slide outwards from the through hole and be clamped with the positioning hole; when the second electromagnet 130 is powered off, the second electromagnet 130 loses magnetic force, the magnetic inner core 131 moves downwards to reset, and the ball 132 falls into the annular groove 133 along the inner slide 134.

In the actual centrifugal blockage removing process, the continuous unidirectional rotation can also cause partial impurities to be accumulated on a certain edge of a rack bar of the fixing rack all the time, or just cause certain blockage due to impurities such as silt and the like, and normal rotation is difficult to realize, so the arrangement of the forward rotation gear set and the reverse rotation gear set can realize the forward rotation and the reverse rotation of the lower transmission shaft 103, and the blockage removing and impurity removing effects are better; through the control of the second clutch device and the third clutch device, the normal forward rotation of the forward rotation gear set or the normal reverse rotation of the reverse rotation gear set can be realized.

The specific structure of the second clutch device and the third clutch device is as follows: the second electromagnet 130 may be installed in the wall of the gearbox 101, and an elastic member, such as a spring, may be disposed between the second electromagnet 130 and the magnetic core 131 to facilitate the downward return of the magnetic core 131; the lower groove wall of the ring groove 133 is an inclined surface, when the second electromagnet 130 is powered on, the magnetic inner core 131 moves upwards, and under the action of the inclined surface, the ball 132 can move outwards in the radial direction through the through hole and is clamped with the positioning hole, so that the first wheel shaft 125 or the second wheel shaft drives the corresponding first gear 123 or the third gear 126 to transmit; in the power-off state, the ball 132 falls into the inner slide 134, and the first wheel axle 125 or the second wheel axle and the corresponding first gear 123 or the corresponding third gear 126 only rotate relatively, so that transmission is no longer realized; in addition, the transmission rod and the second gear 124 are made of non-magnetic materials such as plastics or ceramics.

A control method of a shielding water-cooled permanent magnet high-speed well pump motor is characterized by comprising the following steps: the control method comprises a control system, wherein the control system comprises a control unit, a flow sensor arranged on a water outlet 9 and an alarm module for abnormal alarm, the real-time flow detected by the flow sensor is set to be Q, and the minimum normal flow is set to be Q1;

the control method comprises the following steps;

l0, the control unit controls the motor to start, and after delaying for A seconds, the step enters the step L1; through delay setting, the flow sensor detects again, and the misjudgment caused by the fact that the water yield is not flow when the motor is just started is avoided; wherein the value of A is freely set according to actual needs;

l2, when Q is less than Q1 in the step L1, the flow is too small, the phenomenon of blockage is possibly caused, the second electromagnet 130 is electrified, the first electromagnet is electrified, the lower rotating shaft 3 drives the filter core layer 105 to rotate in the forward direction, the filter core layer 105 realizes decontamination under the action of centrifugal force in the rotating process, and meanwhile, the decontamination component decontaminates filter meshes on the filter area; meanwhile, whether Q is greater than or equal to Q1 is continuously judged within B seconds, wherein the B time is the electrifying time of the second electromagnet 130; wherein the value of B is freely set according to actual needs, such as 10-60;

l3, when Q is more than or equal to Q1 in the step L1, the flow is normal;

l4, when the second electromagnet 130 is powered on in the step L2 within B seconds, and Q is more than or equal to Q1, the flow is normal, the first electromagnet is powered off, and the second electromagnet 130 is powered off;

l5, when the second electromagnet 130 is electrified for B seconds in the step L2, Q is still smaller than Q1, which indicates that the filter assembly is blocked, and the blockage cannot be removed in the forward rotation centrifugal process, the second electromagnet 130 is powered off, and after C seconds is delayed, the third electromagnet is powered on, so that the lower rotating shaft 3 drives the filter core layer 105 to rotate reversely to perform secondary decontamination; the numerical value of C is freely set according to actual needs, such as 2-5, and gear beating between gears is avoided through delay setting; meanwhile, whether Q is larger than Q1 is continuously judged within D seconds, wherein D is the electrifying time of the third electromagnet; wherein the value of D is freely set according to actual needs, such as 10-60;

l7, when the third electromagnet is electrified for D seconds in the step L5, Q is less than Q1, which indicates that the filter assembly is blocked and the blockage is difficult to remove, the first electromagnet is powered off, the third electromagnet is powered off, and the alarm module gives an alarm;

s0, when the second electromagnet 130 is electrified for B seconds in the step L4, and Q is more than or equal to Q1, the step S1 is executed;

s4, powering off the first electromagnet and the second electromagnet 130, and then returning to the step L1;

s5, powering off the first electromagnet, powering off the second electromagnet 130, and alarming by the alarm module;

The time and the number of times of T can be set according to actual needs, for example, T is 30-60 minutes, the number of times of N can be 3-6, the cleaning frequency judging unit is mainly used for detecting the number of times of starting cleaning in unit time, if the number is too frequent, the water body at the position is possibly too turbid or the filter assembly has problems, and an alarm is needed to prompt an operator to carry out corresponding steps of checking, replacing and the like; the control system can also be provided with a wireless remote transmission unit for sending the alarm signal to a mobile phone or a computer.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a pump motor for shielding water-cooled permanent magnetism high-speed well, includes casing (1), stator, rotor (2) and pivot (3), on rotor (2) were fixed in pivot (3), the both ends of casing (1) still were equipped with upper end cover (4) and lower end cover (5) respectively, be equipped with on upper end cover (4) with the last shaft hole of pivot (3) adaptation, be equipped with on lower end cover (5) with the lower shaft hole of pivot (3) adaptation, its characterized in that: the motor shell (1) is of an inner-outer double-layer structure, a shielding cavity is formed between the two layers of the motor shell (1), a stator is installed in the shielding cavity, resin is filled in the shielding cavity, an axial thrust component (6) is arranged between the lower end of the rotor (2) and the lower end cover (5), the lower end of the rotating shaft (3) is also provided with a pumping impeller (7) positioned on the outer side of the lower end cover (5), a flow guide channel (8) is arranged in a lower shaft hole, a water passing channel is arranged on the outer side of the rotor (2), a water outlet (9) is arranged on the upper end cover (4), and the flow guide channel (8), the water passing channel and the water outlet (9) are sequentially communicated;

the bottom of the lower end cover (5) is also provided with a filtering component;

the filter assembly comprises an outer frame (100) and a gear box (101) arranged in the outer frame (100), the gear box (101) is connected with an upper transmission shaft (102) and a lower transmission shaft (103) respectively, a reduction gear set used for connecting the upper transmission shaft (102) and the lower transmission shaft (103) is further arranged in the gear, the upper transmission shaft (102) is connected with a rotating shaft (3) through a floating coupler (104), the bottom end of the rotating shaft (3) is provided with a first clutch device used for controlling the floating coupler (104) to axially abut against or separate from the rotating shaft (3), the lower section of the outer frame (100) is a filter area, the periphery of the filter area is provided with a plurality of filter meshes, and the lower transmission shaft (103) is provided with a filter core layer (105) positioned at the top of the filter area;

filter sandwich layer (105) including cotton filter cloth and set up the mount on cotton filter cloth both sides, filter sandwich layer (105) and be the inverted cone type structure, the inner of mount is fixed in on under drive shaft (103) and rotates along with the rotation of under drive shaft (103), the periphery of mount is followed and is still been equipped with the subassembly of decontaminating, the subassembly of decontaminating includes base (106) and cover sliding sleeve (107) of establishing on base (106), still be equipped with ejecting spring (108) between base (106) and sliding sleeve (107), be equipped with brush hair (109) of contradicting with filter mesh hole is radial on the outer wall of sliding sleeve (107), still be equipped with in the filtering area and keep off ring (110) along the graphite of top contradicting with the mount periphery.

2. The shielding water-cooled permanent magnet pump motor for high-speed wells according to claim 1, characterized in that: axial thrust subassembly (6) are including thrust bearing (10), thrust plate (11) and friction disk (12) from lower supreme coincide in proper order, and on thrust bearing (10) were fixed in lower end cover (5), the bottom surface of thrust plate (11) was equipped with the ball-type concave surface, was equipped with ball-type convex surface (13) with ball-type concave surface adaptation on thrust bearing (10), still was equipped with locating piece (14) on the bottom surface of thrust plate (11), was equipped with constant head tank (15) on thrust bearing (10).

3. The shielding water-cooled permanent magnet pump motor for high-speed wells according to claim 2, characterized in that: be equipped with down graphite sleeve (16) in the lower shaft hole, on guide way (8) seted up graphite sleeve (16) inner wall down, be equipped with graphite sleeve (17) in the upper shaft hole, be equipped with first guiding gutter in going up graphite sleeve (17), be equipped with respectively on the both ends of pivot (3) with last graphite sleeve (17) and graphite sleeve (16) complex ceramic coating down, still be equipped with a plurality of second guiding gutters (18) on the up end of thrust dish (11).

4. The shielding water-cooled permanent magnet pump motor for high-speed wells according to claim 1, characterized in that: the sand blocking assembly is arranged at the outer side of the upper end cover (4) and comprises a fixing sleeve (19) and a sand throwing ring (20), one end of the fixing sleeve (19) is installed on the upper end cover (4), a framework oil seal (21) is arranged in the fixing sleeve (19), the sand throwing ring (20) is installed at the other end of the fixing sleeve (19), and a wear-resisting ring (22) is arranged in the sand throwing ring (20).

5. The shielding water-cooled permanent magnet pump motor for high-speed wells according to claim 1, characterized in that: the floating type coupler (104) comprises a core shaft (111) and a floating sleeve (112), the bottom end of the core shaft (111) is installed in the floating sleeve (112), a floating hole is formed in the top end of the upper transmission shaft (102), the bottom end of the floating sleeve (112) is installed in the floating hole, a lower floating spring (113) is arranged in the floating hole, a limiting ring (114) is further arranged at the bottom end of the core shaft (111), a lock cap (115) installed in the floating sleeve (112) is sleeved on the core shaft (111), a reset spring (116) is further sleeved on the core shaft (111), two ends of the reset spring (116) are respectively abutted against the limiting ring (114) and the lock cap (115), an end face cam (117) is further arranged at the top end of the floating sleeve (112), and a convex block (118) axially abutted against the end face cam (117) is further arranged on the core shaft (111);

the first clutch device comprises a first electromagnet and a magnetic ring (120), the first electromagnet annularly surrounds the lower end of the rotating shaft, the first electromagnet is fixed on the lower end cover (5) through a support, the magnetic ring (120) is annularly fixed at the top end of the mandrel (111), and an upper floating spring abutting against the magnetic ring (120) is further arranged on the support; when the first electromagnet is electrified, attraction force is generated on the magnetic ring (120), the mandrel (111) is axially abutted against the rotating shaft (3), and the rotating shaft (3) drives the mandrel (111) to rotate; when the first electromagnet is powered off, the mandrel (111) and the rotating shaft (3) are separated from each other.

6. The shielding water-cooled permanent magnet pump motor for high-speed wells according to claim 5, characterized in that: the reduction gear set comprises a main gear (121) arranged on an upper transmission shaft (102) and a secondary gear (122) arranged on a lower transmission shaft (103), the reduction gear set comprises a forward rotation gear set and a reverse rotation gear set, the forward rotation gear set comprises a first gear (123), a second gear (124) and a first wheel shaft (125), the first gear (123) and the second gear (124) are respectively arranged on two ends of the first wheel shaft (125), the first gear (123) is meshed with the main gear (121), the second gear (124) is meshed with the secondary gear (122), the reverse rotation gear set comprises a third gear (126), a fourth gear (127), a fifth gear (128), a second wheel shaft and a third wheel shaft, the third gear (126) and the fourth gear (127) are arranged on two ends of the second wheel shaft, the third gear (126) is also meshed with the main gear (121), and the fifth gear (128) is arranged in a gear box (101) through the third wheel shaft, the fourth gear (127) is meshed with the pinion (122) through a fifth gear (128);

a second clutch device is arranged between the first gear (123) and the first wheel shaft (125), a third clutch device is arranged between the third gear (126) and the second wheel shaft, the second clutch device and the third clutch device both comprise a second electromagnet (130) and a magnetic inner core (131), the second electromagnet (130) is positioned on the end parts of the first wheel shaft (125) and the second wheel shaft, the first wheel shaft (125) and the second wheel shaft are both internally provided with an inner hole and a plurality of through holes radially penetrating through the inner hole, the magnetic inner core (131) is arranged in the inner hole, a ball (132) is arranged in the through hole, an annular groove (133) matched with the ball (132) is further arranged on the magnetic inner core (131), a plurality of inner slide ways (134) matched with the ball (132) are arranged on the inner wall of the inner hole, and positioning holes matched with the ball (132) are respectively arranged on the first gear (123) and the second gear (124); when the second electromagnet (130) is electrified, the second electromagnet (130) generates magnetic force, the magnetic property is attracted upwards, and the magnetic property pushes the ball (132) to slide outwards from the through hole and be clamped with the positioning hole; when the second electromagnet (130) is powered off, the second electromagnet (130) loses magnetic force, the magnetic inner core (131) moves downwards to reset, and the ball (132) falls into the annular groove (133) along the inner slide way (134).

7. A control method suitable for the shielding water-cooled permanent magnet pump motor for the high-speed well according to claim 6 is characterized in that: the control method comprises a control system, wherein the control system comprises a control unit, a flow sensor arranged on a water outlet (9) and an alarm module for abnormal alarm, the real-time flow detected by the flow sensor is set to be Q, and the minimum normal flow is set to be Q1;

the control method comprises the following steps;

l2, when Q is less than Q1 in the step L1, the flow is small, the phenomenon of blockage is possibly caused, the second electromagnet (130) is electrified, the first electromagnet is electrified, the lower rotating shaft (3) drives the filter core layer (105) to rotate in the forward direction, the filter core layer (105) is cleaned under the action of centrifugal force in the rotating process, and meanwhile, the cleaning component is used for cleaning filter meshes in the filter area; meanwhile, whether Q is more than or equal to Q1 is continuously judged within B seconds, wherein B is the electrifying time of the second electromagnet (130);

l3, when Q is more than or equal to Q1 in the step L1, the flow is normal;

l4, when the second electromagnet (130) is powered on in the step L2 within B seconds, and Q is more than or equal to Q1, the flow is normal, the first electromagnet is powered off, and the second electromagnet (130) is powered off;

l5, when the second electromagnet (130) is electrified for B seconds in the step L2 and Q is still smaller than Q1, the second electromagnet (130) is powered off, and after C seconds, the third electromagnet is electrified, so that the lower rotating shaft (3) drives the filter core layer (105) to rotate reversely to perform secondary decontamination; meanwhile, whether Q is larger than Q1 is continuously judged within D seconds, wherein D is the electrifying time of the third electromagnet;

s0, when the second electromagnet (130) in the step L4 is electrified for B seconds, and Q is more than or equal to Q1, the step S1 is executed;

s4, powering off the first electromagnet and the second electromagnet (130), and then returning to the step L1;

s5, the first electromagnet is powered off, the second electromagnet (130) is powered off, and the alarm module gives an alarm;