阅读说明：本技术 基于分解式密封的防爆防尘防水内真空电机 (Explosion-proof dustproof waterproof interior vacuum motor based on decomposition formula is sealed ) 是由 卢星霖 于 2021-07-30 设计创作，主要内容包括：基于分解式密封的防爆防尘防水内真空电机涉及密封领域又涉及电机领域,本发明所述的分解式密封,就是旋转时是动密封,停止旋转时是静密封,动密封采用阻止和/或疏导功能,阻止功能采用离心叶轮和/或轴流叶轮排斥环境对电机内腔的一切不利因素,疏导功能采用连通管疏导渗入密封舱内腔的来自于环境的不利因素,始终使电机内腔保持真空或接近真空状态；本发明希望解决特种电机和普通电机的防爆防尘防水的问题,可以尽量减少特种电机昂贵的材料成本和制造成本,本发明还希望解决电机内腔洁净度,减少故障率,减少维护成本,增加有效的工作长度,提高工作效率,延长使用寿命,节约能源。(The invention relates to the field of sealing and the field of motors, in particular to an explosion-proof, dust-proof and water-proof inner vacuum motor based on decomposition type sealing, which is dynamic sealing when rotating and static sealing when stopping rotating, wherein the dynamic sealing adopts a stopping and/or dredging function, the stopping function adopts all adverse factors of the environment repelled by a centrifugal impeller and/or an axial flow impeller to the inner cavity of the motor, the dredging function adopts a communicating pipe to dredge the adverse factors from the environment infiltrated into the inner cavity of a sealed cabin, and the inner cavity of the motor is always kept in a vacuum state or a state close to the vacuum state; the invention aims to solve the problems of explosion prevention, dust prevention and water prevention of the special motor and the common motor, can reduce the expensive material cost and the manufacturing cost of the special motor as much as possible, and also aims to solve the problems of cleanliness of an inner cavity of the motor, failure rate reduction, maintenance cost reduction, effective working length increase, working efficiency improvement, service life extension and energy saving.)

1. The explosion-proof, dust-proof and water-proof inner vacuum motor based on the decomposition type seal is characterized in that at least one axial end of the motor (1) is provided with a seal cabin (1 '), the inner cavity of the seal cabin (1') is provided with a composite seal which consists of a dynamic seal and a static seal, the dynamic seal comprises a repulsion system and/or a dredging system, and the static seal adopts a clutch and a seal ring seat A (200) or a seal ring seat B (103) to form a seal pair; the clutch has at least one of: a passive clutch, a self-actuated clutch, a buoyancy clutch (302); the repulsion system is a centrifugal impeller (201) and/or an axial flow impeller (202) arranged on the rotating shaft (2); the main body of the dredging system is a communicating pipe (3) connected with the inner cavity of the sealed cabin (1').

2. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the split seal as claimed in claim 1, wherein the blades of said centrifugal impeller (201) can be automatically changed in angle according to the rotation direction.

3. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the split seal as claimed in claim 1, wherein the centrifugal impeller (201) is integrated with the seal ring seat a (200).

4. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the split seal as claimed in claim 1, wherein the inner cavity of the sealed cabin (1') connected with one end of the communicating tube (3) is at least one of: a discharge well (101), a working chamber of a centrifugal impeller (201) and a working chamber of an axial-flow impeller (202); the other end of the communicating pipe (3) is connected with the pump.

5. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the split seal as claimed in claim 4, wherein the drainage well (101) has a drainage groove (101 '), the drainage groove (101') is arranged on the inner annular wall of the sealed cabin (1 ') around the rotating shaft (2), and a guide ring platform (203) is sleeved on the rotating shaft (2) surrounded by the drainage groove (101').

6. The explosion-proof, dust-proof and water-proof inner vacuum motor based on the split seal as claimed in any one of claims 1 to 5, wherein the passive clutch is an elastic wave plate clutch (102) or an elastic wave plate clutch (102 ') whose outer ring is tightly connected with the inner cavity of the sealed cabin (1'), wherein, the two end faces of the elastic wave plate clutch (102) have at least one annular groove and/or boss surrounding the center; two axial end faces of the elastic wave plate clutch (102) or the elastic plate clutch (102') are sealing end faces or one is a stressed end face and the other is a sealing end face; after the rotation of the rotating shaft (2) stops, the sealing end surface of the elastic wave plate clutch (102) or the elastic plate clutch (102') and the sealing end surface of the adjacent sealing ring seat A (200) form a sealing pair; after the rotation of the rotating shaft (2) stops, when the stress end face of the elastic wave plate clutch (102) or the elastic plate clutch (102 ') is pressed, the sealing end face of the elastic wave plate clutch (102) or the elastic plate clutch (102') and the sealing end face of the adjacent sealing ring seat A (200) form a sealing pair; and thirdly, when the rotating shaft (2) rotates, a gap is reserved between the sealing end surface of the elastic wave plate clutch (102) or the elastic plate clutch (102') and the sealing end surface of the adjacent sealing ring seat A (200).

7. The explosion-proof, dust-proof and water-proof inner vacuum motor based on the split seal according to any one of claims 1 to 5, wherein the driven clutch is a flywheel clutch (204) which is sleeved on the rotating shaft (2) and rotates synchronously with the rotating shaft (2), the flywheel clutch (204) is composed of an outer ring hammer, a middle ring plate and an inner ring seat, and two axial end faces of the outer ring hammer and/or the middle ring plate are both seal end faces or one force-bearing end face and the other seal end face; after the rotating shaft (2) stops rotating, when the stress end face of the flywheel clutch (204) is pressed, the sealing end face of the flywheel clutch (204) and the sealing end face of the sealing ring seat B (103) connected to the inner cavity of the sealing cabin (1') form a sealing pair, and when the rotating shaft (2) rotates, the flywheel clutch (204) leaves the adjacent sealing ring seat B (103).

8. The explosion-proof, dust-proof and water-proof inner vacuum motor based on the split seal as claimed in claim 6 or 7, wherein the self-force clutch is characterized in that a seal ring seat A (200) or an axial flow impeller (202) is adjacent to the stressed end face of the flywheel clutch (204), a compression spring (300) is axially arranged between the outer ring hammer of the flywheel clutch (204) and the back of the corresponding seal ring seat A (200) or axial flow impeller (202), and one compression spring (300) encircles the rotating shaft (2) or at least three compression springs (300) are arranged around the rotating shaft (2); after the rotating shaft (2) stops rotating, the elastic force of the compression spring (300) enables the flywheel clutch (204) and the sealing end face of the sealing ring seat B (103) to form a sealing pair, when the rotating shaft (2) rotates, the axial elastic force of the compression spring (300) is smaller than the centrifugal force when the flywheel clutch (204) synchronously rotates, and the flywheel clutch (204) leaves the sealing ring seat B (103); after the rotation of the rotating shaft (2) stops, the elasticity of the compression spring (300) enables the flywheel clutch (204) and the elastic wave plate clutch (102) or the elastic plate clutch (102 ') and the seal ring seat A (200) which are adjacent in sequence to form a superposed seal pair, when the rotating shaft (2) rotates, the axial elasticity of the compression spring (300) is smaller than the centrifugal force when the flywheel clutch (204) synchronously rotates, the flywheel clutch (204) leaves the elastic wave plate clutch (102) or the elastic plate clutch (102 '), and meanwhile, the elastic wave plate clutch (102) or the elastic plate clutch (102 ') leaves the seal ring seat A (200).

9. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the disassembled seal as claimed in claim 7, wherein the self-operated clutch is that the magnet (301) is embedded in the seal ring seat B (103), the magnetic force of the magnet (301) attracts the flywheel clutch (204) to closely adhere to the seal ring seat B (103), the magnetic force is smaller than the centrifugal force of the rotation of the flywheel clutch (204), and after the rotation of the rotating shaft (2) is stopped, the flywheel clutch (204) is closely adhered to the seal ring seat B (103) by the magnetic force.

10. The explosion-proof, dust-proof and water-proof internal vacuum motor based on the split seal as claimed in claim 6, wherein the buoyancy clutch (302) is located between the centrifugal impeller (201) or the axial impeller (202) and the elastic wave plate clutch (102) or the elastic plate clutch (102 ') under the sealed cabin (1') of the vertical motor (1).

Technical Field

The invention discloses an explosion-proof, dustproof and waterproof inner vacuum motor based on decomposition type sealing, relates to the field of sealing and also relates to the field of motors, and the invention aims to solve the problems of explosion-proof, dustproof and waterproof of the motor.

The invention is an extension invention based on a zero-leakage non-friction high-performance shaft split type composite seal (patent application number: 202110745671.0); the booster motor of the invention is expected to become an energy-efficient leader, and the invention is expected to give great benefits to the country.

The motor of the present invention is suitable for common working condition environment, special working condition environment of toxic and harmful medium, corrosive medium, inflammable and explosive medium and dust medium, damp environment of mine and ship and underwater environment.

The decomposed seal of the invention subject is that the dynamic seal is a dynamic seal when rotating, the static seal when stopping rotating, the dynamic seal adopts the repulsion and/or dredging function, the repulsion function adopts the centrifugal impeller and/or the axial flow impeller to reject all adverse factors of the environment to the inner cavity of the motor, the dredging function adopts the communicating pipe to dredge the adverse factors from the environment which infiltrate into the inner cavity of the sealed cabin, and the inner cavity of the motor is always kept in vacuum or close to vacuum state; the dynamic seal is always in a non-friction state, no heat loss exists, meanwhile, the metal sealing element has a heat conduction effect, and the centrifugal impeller and/or the axial flow impeller have a heat dissipation effect when rotating synchronously; the shaft seal tightly wrapping the motor rotating shaft is not arranged, the heating of the rotating shaft is not caused, and the energy consumption is reduced.

The explosion-proof and dust-proof system has the advantages that the communication between the inner cavity of the motor and the outside is stopped when the inner cavity of the motor is in a vacuum state or a state close to the vacuum state, no substance can be discharged from the inner cavity of the motor in an air-free environment, and meanwhile, under the action of a repelling and/or dredging function, outside toxic and harmful media and corrosive media cannot enter the inner cavity of the motor, so that the corrosion of parts in the inner cavity of the motor is avoided; and external inflammable and explosive media and dust media cannot enter the inner cavity of the motor, so that the possibility of explosion is avoided.

The waterproof system of the invention is characterized in that under the action of the repelling and/or dredging function, external moisture cannot enter the inner cavity of the motor, and the cleanliness, safety and continuity of the inner cavity of the motor are still ensured even if the inner cavity is submerged by flood.

The inner vacuum is in a vacuum state or a state close to the vacuum state of the inner cavity of the motor, so that wind friction between the rotor and air is avoided, air conditions for generating rotation noise, vortex noise and whistling are avoided, and great significance is brought to air gap stabilization and safe and long-term operation guarantee.

Evaluation of the vacuum motor by the professional:

1. the electrical insulation level is greatly improved, and the service life of the motor is greatly prolonged due to no oxidation;

2. the motor has the advantages that air resistance is avoided, starting is smoother, no-load and load currents are relatively reduced, efficiency is higher than that of the motor used in a common environment, noise is greatly reduced, air convection is avoided, and radiation and conduction are left after heat dissipation of the motor.

The invention claims resource saving, hopes the motor production line to be dustless, then, the motor failure rate is greatly reduced, the service life is doubled, and the energy consumption and the production data are greatly reduced.

Background

The annual output value of the motor in China reaches 8883 million yuan, the annual energy consumption of the motor reaches 60 percent of national energy consumption, 80 percent of industrial energy consumption, and low energy efficiency is a fatal defect of most motors; the small and medium-sized motors account for 75 percent of the power of the motors in China, the average improvement of the small and medium-sized motors is one percent, and more than 20 hundred million kilowatts can be saved in one year.

Compared with the common motor, the existing explosion-proof motor is mainly different in structure and material, and has the unique characteristics that:

1. the explosion-proof motor adopts brushless excitation, a rotary rectifying disc and a static excitation cabinet are arranged, and an excitation control system is reliable; the forward polarity rotation difference is accurate in feeding and excitation, and no impact is caused; the excitation system has reliable step loss protection and strong step re-synchronizing capability; the circuit is reasonable in design, and the discharge resistor does not generate heat in work; the adjusting range of the exciting current is wide;

2. the synchronous machine, the alternating current exciter and the rotary rectifying disc are coaxial, and the rectifying disc is positioned between the main motor and the exciter or outside the bearing seat;

3. the requirements of the safety-increased explosion-proof motor are met, a series of reliable measures for preventing sparks, electric arcs and dangerous high temperature are adopted, and the motor can safely operate in 2-zone explosion dangerous places;

4. the protection grade of the explosion-proof motor shell is IP 55;

5. the explosion-proof motor adopts H-level insulation, and the temperature rise is checked according to F level;

6. the bearings at the two ends are respectively provided with an on-site temperature display instrument and a remote transmission signal terminal;

7. an increased safety type damp-proof heater is arranged and fixed in a cover at the bottom of the motor and used for heating and damp-proof during shutdown;

8. selecting high-quality raw materials, reserving a large margin for electrical and mechanical calculation, and meeting the requirements on operation reliability and temperature of an increased safety motor;

9. the explosion-proof motor is provided with perfect monitoring measures; an increased safety type self-balancing current transformer for differential protection is arranged in the main junction box; the stator winding is embedded with a working platinum thermal resistor and a spare platinum thermal resistor, and the index number is Pt 100; a water leakage monitor is arranged for monitoring the leakage of the water cooler; 10. the end covers on the two sides of the explosion-proof motor adopt hidden bolts with grooves, and the insertion grooves are 5 times deeper than those of the common motor (asbestos pads are added according to requirements), mainly aiming at preventing sparks from jumping outwards along gaps when an internal winding is burnt;

11. except for the structure with excellent sealing performance of a sealing gasket, the junction box of the explosion-proof motor also adopts a structure that an internal lead wire of a motor winding is hermetically led to a terminal, and only three ends are generally led out in order to reduce the links of generating sparks;

12. the external power supply access port of the junction box of the explosion-proof motor is a fire-retardant tubular threaded interface which is extended by tens of centimeters, movably connected and provided with closed fire resistance at two ends, and can be flexibly and reliably connected with an explosion-proof threading steel pipe, so that the motor and an input power line all meet the requirements of closed fire resistance;

13. in order to prevent the fan blade from rubbing the fan cover, the outer edge of the fan blade is far away from the air guide cover, and the fan blade is made of plastics;

14. due to the special structure and material of the explosion-proof motor, the price of the explosion-proof motor is much more expensive than that of a common motor;

15. the explosion-proof motor is mainly used in flammable and explosive places, such as: inflammable and explosive chemical plants, flour processing plants, breweries and oil depots in oil fields.

Most motors are not waterproof, largely because their working environment does not require waterproofing, and waterproof materials limit the overall performance while increasing cost; due to water and solvents, the motion control components are often exposed to corrosion and failure risks, and the waterproof motor is a key component for solving the problem of motor failure caused by water; the coil of a standard electric machine is wound with magnet wire, which is a solid copper wire coated with an enamel or insulating layer; although the coating process is good, it is not perfect and there are always some small pinholes in the varnish; typically, the insulation provides a wire spacing that prevents conduction from one pinhole to the next; pinhole to pinhole conduction is also promoted if there is water between the windings.

In a humid environment, the materials of the stator and the rotor are easy to rust; the rotor and the stator of the motor are mostly made of magnetic iron (silicon steel), and are extremely easy to corrode in a humid environment, and meanwhile, in order to optimize torque, the gaps between the rotating teeth and the non-rotating teeth of the motor are kept to be about 0.05 mm; as the motor operates, these slots become heated, typically to a temperature sufficient to turn any water in the motor into steam; the steam is corrosive, so that the magnetic iron in the rotor teeth rusts faster than usual; once the embroidery fills the 0.05mm air gap, the rotor and stator teeth begin to rub, which removes the effective torque of the motor and loosens the magnet.

If the rust is dry, it will form a grinding dust, if it is wet, it will form a grinding mortar; once the oxide slurry enters a motor bearing and is used as an abrasive material, the bearing abrasion is accelerated, and along with the bearing abrasion, a rotor and a stator become inaccurate, so that the rotor shakes during rotation and finally impacts the stator; the accumulation of oxide layers on the magnetic iron teeth and the loss of the bearing precision can cause the motor to break down in two short weeks; although non-corrosive metals may be used in place of the magnetic iron, such metals would be more expensive, more expensive to manufacture, and would significantly degrade motor performance.

The expert theories are: a proper design method of the motor is to try to prevent moisture from entering the motor.

Disclosure of Invention

The invention aims to provide an explosion-proof, dust-proof and water-proof inner vacuum motor based on split sealing, and improve the quality of a common motor and a special motor.

The explosion-proof dustproof waterproof inner vacuum motor based on the decomposition type sealing is technically characterized in that: at least one axial end of the motor is provided with a sealed cabin, a composite seal arranged in the inner cavity of the sealed cabin consists of a dynamic seal and a static seal, the dynamic seal comprises a repulsion system and/or a dredging system, and the static seal adopts a clutch and a seal ring seat A or a seal ring seat B to form a seal pair; the clutch has at least one of: a passive clutch, an automatic clutch and a buoyancy clutch; the repulsion system is a centrifugal impeller and/or an axial flow impeller arranged on the rotating shaft; the main body of the dredging system is a communicating pipe connected with the inner cavity of the sealed cabin.

The blades of the centrifugal impeller can automatically change angles according to the rotating direction.

The centrifugal impeller is integrated with the seal ring seat A.

The sealed cabin inner chamber that communicating pipe one end is connected is one of them at least: the device comprises a discharge well, a working cabin of a centrifugal impeller and a working cabin of an axial-flow impeller; the other end of the communicating pipe is connected with the pump.

A drainage groove is arranged above the drainage well, the drainage groove is arranged on the inner annular wall of the sealed cabin around the rotating shaft, and meanwhile, a diversion ring platform is sleeved on the rotating shaft surrounded by the drainage groove.

The passive clutch is an elastic corrugated plate clutch or an elastic corrugated plate clutch, the outer ring of the elastic corrugated plate clutch or the elastic corrugated plate clutch is tightly connected with the inner cavity of the sealed cabin, wherein two end faces of the elastic corrugated plate clutch are provided with at least one annular groove and/or boss surrounding the center; the two axial end faces of the elastic wave plate clutch or the elastic plate clutch are both sealing end faces or one is a stressed end face and the other is a sealing end face; after the rotation of the rotating shaft stops, the sealing end face of the elastic wave plate clutch or the elastic plate clutch and the sealing end face of the adjacent sealing ring seat A form a sealing pair; after the rotation of the rotating shaft stops, when the stress end face of the elastic wave plate clutch or the elastic plate clutch is pressed, the sealing end face of the elastic wave plate clutch or the elastic plate clutch and the sealing end face of the adjacent sealing ring seat A form a sealing pair; and thirdly, when the rotating shaft rotates, a gap is reserved between the sealing end surface of the elastic wave plate clutch or the elastic plate clutch and the sealing end surface of the adjacent sealing ring seat A.

The passive clutch is a flywheel clutch which is sleeved on the rotating shaft and synchronously rotates with the rotating shaft, the flywheel clutch is composed of an outer ring hammer, a middle ring plate and an inner ring seat, and two axial end faces of the outer ring hammer and/or the middle ring plate are both sealing end faces or one is a stress end face and the other is a sealing end face; after the rotating shaft stops rotating, when the stress end face of the flywheel clutch is pressed, the sealing end face of the flywheel clutch and the sealing end face of the sealing ring seat B connected to the inner cavity of the sealed cabin form a sealing pair, and when the rotating shaft rotates, the flywheel clutch leaves the adjacent sealing ring seat B.

The self-force clutch is characterized in that a sealing ring seat A or an axial flow impeller is arranged adjacent to the stressed end face of the flywheel clutch, compression springs are axially arranged between an outer ring hammer of the flywheel clutch and the back of the corresponding sealing ring seat A or the back of the axial flow impeller, and one compression spring surrounds a rotating shaft or at least three compression springs are arranged around the rotating shaft; after the rotating shaft stops rotating, the elastic force of a compression spring enables a flywheel clutch and the sealing end face of a sealing ring seat B to form a sealing pair, when the rotating shaft rotates, the axial elastic force of the compression spring is smaller than the centrifugal force when the flywheel clutch synchronously rotates, and the flywheel clutch leaves the sealing ring seat B; after the rotation of the rotating shaft stops, the elasticity of the compression spring enables the flywheel clutch, the elastic wave plate clutch or the elastic plate clutch and the sealing ring seat A which are adjacent in sequence to form a superposed sealing pair, when the rotating shaft rotates, the axial elasticity of the compression spring is smaller than the centrifugal force when the flywheel clutch synchronously rotates, the flywheel clutch leaves the elastic wave plate clutch or the elastic plate clutch, and meanwhile, the elastic wave plate clutch or the elastic plate clutch leaves the sealing ring seat A.

The self-operated clutch is characterized in that a magnet is implanted in a sealing ring seat B, the magnetic force of the magnet attracts the flywheel clutch to be tightly attached to the sealing ring seat B, the magnetic force is smaller than the centrifugal force generated by rotation of the flywheel clutch, and the flywheel clutch is tightly attached to the sealing ring seat B by the magnetic force after the rotation of a rotating shaft is stopped.

The buoyancy clutch is arranged between the centrifugal impeller or the axial flow impeller and the elastic wave plate clutch or the elastic plate clutch which are vertically arranged below the motor sealed cabin.

In conclusion, the explosion-proof, dust-proof and water-proof inner vacuum motor based on the decomposition type sealing has the positive effects that:

1. the split seal reduces abrasion and function consumption while having no friction, reduces use and maintenance cost, reduces failure rate, improves working efficiency and prolongs service life;

2. explosion-proof, dust-proof and water-proof;

3. the cost performance is high;

4. the effective working length is increased, and the working efficiency is improved;

5. noise is reduced;

6. safe and energy-saving.

Drawings

Fig. 1 is a schematic longitudinal sectional structure of the first embodiment.

Fig. 2 is a schematic longitudinal sectional structure of the second embodiment.

Fig. 3 is a schematic longitudinal sectional structure of a third embodiment.

Fig. 4 is a schematic longitudinal sectional structure of the fourth embodiment.

Fig. 5 is a schematic longitudinal sectional structure of the fifth embodiment.

Fig. 6 is a schematic longitudinal sectional structure of the sixth embodiment.

Fig. 7 is a schematic longitudinal sectional structure of the seventh embodiment.

Fig. 8 is a schematic longitudinal sectional structure of the eighth embodiment.

Fig. 9 is a schematic longitudinal sectional structure of the ninth embodiment.

Fig. 10 is a schematic longitudinal sectional structure of the tenth embodiment.

Fig. 11 is a schematic longitudinal sectional structure of the eleventh embodiment.

Fig. 12 is a schematic longitudinal sectional structure of the twelfth embodiment.

FIG. 13 is a schematic longitudinal sectional view of the thirteenth embodiment.

Fig. 14 is a schematic longitudinal sectional structure of the fourteenth embodiment.

Fig. 15 is a schematic longitudinal sectional structure of the fifteenth embodiment.

Fig. 16 is a schematic longitudinal sectional structure of the sixteenth embodiment.

In the figure, 1-motor, 1 ' -sealed cabin, 100-interlayer, 101-discharge well, 101 ' -drainage groove, 102-elastic wave plate clutch, 102 ' -elastic plate clutch, 103-sealed ring seat B, 2-rotating shaft, 200-sealed ring seat A, 201-centrifugal impeller, 202-axial-flow impeller, 203-guide ring platform, 204-flywheel clutch, 3-communicating pipe, 300-compression spring, 301-magnet and 302-buoyancy clutch.

Detailed description of the preferred embodiments

Example overview:

the related components of the rotating shaft 2 in the following embodiments are a seal ring seat a200, a centrifugal impeller 201, an axial-flow impeller 202, a guide ring platform 203, and a freewheel clutch 204, which are all fixedly mounted on the rotating shaft 2 and rotate synchronously with the rotating shaft 2.

Example one

Referring to fig. 1, the left end of the motor 1 is a sealed cabin 1 ', and an inner cavity of the sealed cabin 1 ' is sequentially provided with an axial-flow impeller 202, a flywheel clutch 204, an elastic sheet clutch 102 ', a sealing ring seat a200 and an interlayer 100 from left to right; wherein, a compression spring 300 is arranged between the outer ring hammer of the flywheel clutch 204 and the back of the corresponding axial-flow impeller 202.

As shown in fig. 1, at this time, the rotating shaft 2 rotates, and the axial flow impeller 202 rotates synchronously, so as to prevent ambient air or water from infiltrating into the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum or near vacuum state; the freewheel clutch 204 rotates synchronously, and the compression spring 300 is compressed by the centrifugal force, so that the freewheel clutch 204 is separated from the elastic sheet clutch 102 ', and the elastic sheet clutch 102' has a gap with the seal ring seat a 200.

Example two

Referring to fig. 2, the left end of the motor 1 is a sealed cabin 1 ', and an inner cavity of the sealed cabin 1' is sequentially provided with an axial-flow impeller 202, an elastic sheet clutch 102 ', a sealing ring seat a200, a flywheel clutch 204, the elastic sheet clutch 102' and a sealing ring seat a200 from left to right; a compression spring 300 is arranged between the outer ring hammer of the flywheel clutch 204 and the sealing ring seat A200.

As shown in fig. 2, at this time, the rotation shaft 2 stops rotating, and ambient air or water permeates into the front end of the inner cavity of the sealed cabin 1 'and the pressure thereof presses the elastic sheet clutch 102' at the left end to be closely attached to the corresponding sealing ring seat a 200; under the action of the elastic force of the compression spring 300, the flywheel clutch 204 is tightly attached to the elastic sheet clutch 102 ' at the adjacent right end, and meanwhile, the elastic sheet clutch 102 ' at the right end is tightly attached to the adjacent sealing ring seat A200, and the elastic sheet clutch 102 ' at the right end and the adjacent sealing ring seat A200 form a superposed sealing pair; the inner cavity of the motor 1 still keeps a vacuum state or a state close to the vacuum state.

EXAMPLE III

Referring to fig. 3, the left end of the motor 1 is a sealed cabin 1 ', and an inner cavity of the sealed cabin 1 ' is sequentially provided with an axial-flow impeller 202, an elastic sheet clutch 102 ', a flywheel clutch 204, a sealing ring seat B103, a magnet 301, an interlayer 100 and an interlayer 100 from left to right.

As shown in fig. 3, at this time, the rotating shaft 2 rotates, the axial flow impeller 202 rotates synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; at the same time, the freewheel clutch 204 disengages the magnetic force of the magnet 301 and rotates synchronously away from the seal ring seat B103.

Example four

Referring to fig. 4, the left end of the motor 1 is a sealed cabin 1 ', and the left end is sequentially provided with an elastic sheet clutch 102 ', a sealed ring seat a200, an axial-flow impeller 202, an elastic sheet clutch 102 ', a flywheel clutch 204, a sealed ring seat B103, a magnet 301, an interlayer 100 and an interlayer 100 from left to right.

As shown in fig. 4, at this time, the rotation shaft 2 stops rotating, at this time, the working chamber of the axial-flow impeller 202 is in a closed negative pressure state, the pressure of ambient air or water presses the elastic sheet clutch 102 'at the left end to closely adhere to the corresponding seal ring seat a200, the elastic sheet clutch 102' at the right end to closely adhere to the corresponding freewheel clutch 204, and at the same time, under the action of the magnetic force of the magnet 301, the freewheel clutch 204 and the seal ring seat B103 closely adhere to each other, which form a superimposed seal pair; the inner cavity of the motor 1 still keeps a vacuum state or a state close to the vacuum state.

EXAMPLE five

Referring to fig. 5, the left end of the motor 1 is a sealed cabin 1 ', and an inner cavity of the sealed cabin 1 ' is sequentially provided with an axial-flow impeller 202, an interlayer 100, the axial-flow impeller 202, an elastic sheet clutch 102 ', a flywheel clutch 204, a seal ring seat B103, a magnet 301 and the interlayer 100 from left to right.

As shown in fig. 5, at this time, the rotating shaft 2 rotates, the two axial flow impellers 202 rotate synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; at the same time, the freewheel clutch 204 disengages the magnetic force of the magnet 301 and rotates synchronously away from the seal ring seat B103.

EXAMPLE six

Referring to fig. 6, the left end of the motor 1 is a sealed cabin 1 ', and an inner cavity of the sealed cabin 1 ' is sequentially provided with a centrifugal impeller 201, an interlayer 100, an elastic sheet clutch 102 ', a flywheel clutch 204, a seal ring seat B103, a magnet 301 and the interlayer 100 from left to right; wherein, the inner ring of the blades of the centrifugal impeller 201 wraps the axially extending outer end of the interlayer 100.

As shown in fig. 6, at this time, the rotating shaft 2 rotates, the centrifugal impeller 201 rotates synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; at the same time, the freewheel clutch 204 disengages the magnetic force of the magnet 301 and rotates synchronously away from the seal ring seat B103.

EXAMPLE seven

Referring to fig. 7, the left end of the motor 1 is a sealed cabin 1 ', and the left end is sequentially provided with an elastic sheet clutch 102', a sealed ring seat a200, a centrifugal impeller 201, an interlayer 100, an elastic wave sheet clutch 102, a sealed ring seat a200, a flywheel clutch 204 and a sealed ring seat B103; wherein, the sealing ring seat A200 at the left end is integrated with the front end of the centrifugal impeller 201; wherein, a compression spring 300 is arranged between the outer ring hammer of the flywheel clutch 204 and the sealing ring seat A200 at the right end.

Fig. 7 shows that, at this time, the rotating shaft 2 is rotating, and the centrifugal impeller 201 rotates synchronously, so as to prevent ambient air or water from permeating into the inner cavity of the sealed cabin 1'; meanwhile, under the repulsion action of the centrifugal impeller 201, the working cabin of the centrifugal impeller is a closed negative pressure cavity, and the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; the right sealing ring seat A200 and the flywheel clutch 204 rotate synchronously, the centrifugal force is larger than the elastic force of the compression spring 300, the flywheel clutch 204 leaves the sealing ring seat B103, the elastic sheet clutch 102' leaves the sealing ring seat A200 integrated with the centrifugal impeller 201, and the elastic wave sheet clutch 102 leaves the sealing ring seat A200 at the right end.

Example eight

Referring to fig. 8, the left end of the motor 1 is a sealed cabin 1 ', and the left end is sequentially provided with an elastic sheet clutch 102 ', a sealed ring seat a200, an axial-flow impeller 202, an elastic sheet clutch 102 ', a flywheel clutch 204, a sealed ring seat B103, a magnet 301, an interlayer 100 and an interlayer 100 from left to right.

As shown in fig. 8, at this time, the rotation shaft 2 stops rotating, and the pressure of the ambient air or water presses the elastic sheet clutch 102' at the left end to closely adhere to the corresponding sealing ring seat a 200; under the action of negative pressure in the inner cavity of the motor 1, the elastic sheet clutch 102' at the right end is tightly attached to the flywheel clutch 204, and simultaneously, under the action of the magnetic force of the magnet 301, the flywheel clutch 204 is tightly attached to the sealing ring seat B103, so that a superposed sealing pair is formed; the working chamber of the axial flow impeller 202 forms a closed negative pressure cavity, and the inner cavity of the motor 1 still keeps a vacuum state or a state close to the vacuum state.

Example nine

Referring to fig. 9, the left end of the motor 1 is a sealed cabin 1 ', and the left end is sequentially provided with an elastic sheet clutch 102', a sealed ring seat a200, a centrifugal impeller 201, an interlayer 100, an elastic wave sheet clutch 102, a sealed ring seat a200, a flywheel clutch 204, a sealed ring seat B103, an axial flow impeller 202 and an interlayer 100 from left to right, and a communicating pipe 3 is divided into two working cabins which are respectively communicated with the working cabin of the centrifugal impeller 201 and the working cabin of the flywheel clutch 204; wherein, the sealing ring seat A200 at the left end is integrated with the front end of the centrifugal impeller 201, and the inner ring of the centrifugal impeller 201 wraps the axially extending outer end of the adjacent interlayer 100; a compression spring 300 is arranged between the outer ring hammer of the flywheel clutch 204 and the sealing ring seat A200 corresponding to the right end.

As shown in fig. 9, at this time, the rotating shaft 2 rotates, the centrifugal impeller 201 and the axial-flow impeller 202 rotate synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; the freewheel clutch 204 rotates synchronously, the centrifugal force of the freewheel clutch 204 is greater than the elastic force of the compression spring 300, and the freewheel clutch 204 leaves the adjacent seal ring seat B103.

Example ten

Referring to fig. 10, the left end of the motor 1 is a sealed cabin 1 ', the left end is provided with an axial-flow impeller 202, an interlayer 100, a discharge well 101, an elastic wave plate clutch 102, a sealing ring seat a200, a flywheel clutch 204 and a sealing ring seat B103 in sequence from left to right, a communicating pipe 3 is divided into two branches and is respectively communicated with the lower parts of the working cabins of the discharge well 101 and the right flywheel clutch 204, the inner ring surface of the interlayer 100 above the discharge well 101 is provided with a drainage groove 101 ' surrounding a rotating shaft 2, and a guide ring platform 203 is sleeved on the rotating shaft 2 surrounded by the drainage groove 101 '; and a compression spring 300 is arranged between the outer ring hammer of the right flywheel clutch 204 and the corresponding sealing ring seat A200.

As shown in fig. 10, at this time, the rotating shaft 2 rotates, the axial flow impeller 202 rotates synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and the inner cavity of the motor 1 is in a vacuum or near vacuum state; even if the air or water which seeps into the front end of the inner cavity of the sealed cabin 1' and falls into the discharge well 101 is pumped out and discharged through the communicating pipe 3, simultaneously, in the pumping process of the pump, the inner cavity of the motor 1 is promoted to form a vacuum state or a state close to the vacuum state; elastic wave plate clutch 102 leaves seal ring seat A200, seal ring seat A200 and freewheel clutch 204 rotate synchronously, its centrifugal force is greater than the elastic force of compression spring 300, freewheel clutch 204 leaves adjacent seal ring seat B103.

EXAMPLE eleven

Referring to fig. 11, the left end of the motor 1 is a sealed cabin 1', and the centrifugal impeller 201, the isolation layer 100, the elastic wave plate clutch 102, the seal ring seat a200, the flywheel clutch 204, the seal ring seat B103, the isolation layer 100, the flywheel clutch 204, the seal ring seat B103, the magnet 301 and the isolation layer 100 are arranged in sequence from left to right, wherein a compression spring 300 is arranged between an outer ring hammer of the flywheel clutch 204 at the left end and the corresponding seal ring seat a200, and an inner ring of a blade of the centrifugal impeller 201 wraps an axially extending outer end of the adjacent isolation layer 100.

As shown in fig. 11, at this time, the rotating shaft 2 rotates, the centrifugal impeller 201 rotates synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum state or a state close to the vacuum state; the two flywheel clutches 204 rotate synchronously, the centrifugal force of the flywheel clutch 204 at the left end is larger than the elastic force of the compression spring 300, the centrifugal force of the flywheel clutch 204 at the right end is larger than the magnetic force of the magnet 301, and the two flywheel clutches 204 leave the adjacent sealing ring seats B103.

Example twelve

Referring to fig. 12, two ends of the motor 1 are sealed cabins 1', and two sides of the motor 1 are, from outside to inside, an axial flow impeller 202, an elastic wave plate clutch 102, a sealing ring seat a200, a freewheel clutch 204, a sealing ring seat B103, a spacer layer 100 and a spacer layer 100 in sequence, wherein a compression spring 300 is arranged between an outer ring hammer of the freewheel clutches 204 at the two ends and the respective corresponding sealing ring seats a 200.

As shown in fig. 12, at this time, the rotating shaft 2 rotates, the axial flow impellers 202 on both sides rotate synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum or near vacuum state; meanwhile, the centrifugal force of the two flywheel clutches 204 is greater than the elastic force of the compression springs 300, and the two flywheel clutches are separated from the corresponding sealing ring seats B103 to rotate synchronously.

EXAMPLE thirteen

Referring to fig. 13, two ends of the motor 1 are sealed compartments 1', and two sides of the motor 1 are, from outside to inside, a centrifugal impeller 201, a separation layer 100, an elastic wave plate clutch 102, a sealing ring seat a200, a flywheel clutch 204, a sealing ring seat B103, and a separation layer 100 in sequence, wherein a compression spring 300 is arranged between an outer ring hammer of the flywheel clutch 204 at the two ends and the respective corresponding sealing ring seat a200, and inner blade rings of the centrifugal impellers 201 at the two sides respectively wrap axially extending outer ends of the respective adjacent separation layer 100.

As shown in fig. 13, at this time, the rotating shaft 2 is rotating, the centrifugal impellers 201 on both sides rotate synchronously, so as to prevent ambient air or water from infiltrating into the inner cavity of the sealed cabin 1', and simultaneously, the inner cavity of the motor 1 is in a vacuum state or a state close to vacuum; meanwhile, the centrifugal force of the two flywheel clutches 204 is greater than the elastic force of the compression springs 300, and the two flywheel clutches are separated from the corresponding sealing ring seats B103 to rotate synchronously.

Example fourteen

Referring to fig. 14, two ends of the motor 1 are sealed cabins 1 ', and two sides of the motor 1 are, from outside to inside, a centrifugal impeller 201, an interlayer 100, an elastic sheet clutch 102', a flywheel clutch 204, a seal ring seat B103, a magnet 301 and the interlayer 100 in sequence, wherein inner blade rings of the centrifugal impellers 201 on the two sides respectively wrap axially extending outer ends of the respective adjacent interlayer 100.

As shown in fig. 14, at this time, the rotation shaft 2 stops rotating, the elastic plate clutches 102' at both ends are respectively tightly attached to the corresponding freewheel clutches 204 under the action of the pressure of ambient air or water and the negative pressure in the cavity of the motor 1, and meanwhile, the freewheel clutches 204 at both ends are respectively tightly attached to the corresponding seal ring seats B103 under the action of the magnetic force of the magnet 301, which respectively form stacked seal pairs; the inner cavity of the motor 1 still keeps a vacuum state or a state close to the vacuum state.

Example fifteen

Referring to fig. 15, the lower end of the vertical underwater motor 1 is a sealed cabin 1 ', and from bottom to top, an axial-flow impeller 202, a buoyancy clutch 302, an elastic sheet clutch 102', a flywheel clutch 204, a sealing ring seat B103, a magnet 301, and a spacer 100 are arranged in sequence.

As shown in fig. 15, at this time, the rotating shaft 2 rotates, the axial flow impeller 202 rotates synchronously, so that water cannot permeate into the inner cavity of the sealed cabin 1', and the inner cavity of the motor 1 forms vacuum or near vacuum; the elastic plate clutch 102' leaves the flywheel clutch 204, the flywheel clutch 204 rotates synchronously, the centrifugal force is larger than the magnetic force of the magnet 301, and the flywheel clutch 204 leaves the sealing ring seat B103.

Example sixteen

Referring to fig. 16, the lower end of the vertical underwater motor 1 is a sealed cabin 1', and from bottom to top, a centrifugal impeller 201, a spacer layer 100, a buoyancy clutch 302, an elastic wave plate clutch 102, a sealing ring seat a200, a flywheel clutch 204, a sealing ring seat B103 and the spacer layer 100 are arranged in sequence; a compression spring 300 is arranged between an outer ring hammer of the flywheel clutch 204 and the corresponding sealing ring seat A200, and an inner ring of a blade of the centrifugal impeller 201 wraps the axially extending outer end of the adjacent interlayer 100.

As shown in fig. 16, at this time, the rotation shaft 2 stops rotating, the buoyancy of water lifts the buoyancy clutch 302, and at the same time, under the negative pressure of the inner cavity of the motor 1, the environmental pressure pushes the elastic wave plate clutch 102 to closely adhere to the sealing ring seat a200, and under the elastic force of the compression spring 300, the flywheel clutch 204 closely adheres to the sealing ring seat B103; the inner cavity of the motor 1 still keeps a vacuum state or a state close to the vacuum state.