Submersible motor

Abstract

The submersible motor comprises a casing, a rotor shaft and a rotor, the rotor shaft is arranged in the middle of the casing in a penetrating manner, the rotor is sleeved on the outer wall of the middle of the rotor shaft, stators are arranged on the inner wall of the casing, one side of the top of the casing is connected with a front bearing seat, and the other side of the top of the casing is connected with a rear bearing seat. The front bearing seat is connected with the rotor shaft through a ball bearing, the inner wall of the bottom end of the machine shell is connected with a pressure adjusting film through a bolt, the pressure adjusting film is made of rubber, a spring is arranged on the side, close to the inner wall of the machine shell, of the pressure adjusting film, and a buffering mechanism is arranged between the protection shell and the machine shell. The buffering mechanism comprises a springback column, a fixing sleeve, a supporting spring and a damping ring. The pressure adjusting film retracts to different degrees according to different water depths, so that the effect of adjusting internal and external pressure of the motor is achieved, damage and leakage caused by too large internal and external pressure difference of the motor are avoided, and the situation that the motor is damaged due to internal oscillation caused by collision of the submersible motor is avoided by adopting the buffer mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible motors, in particular to a submersible motor. Background Art

[0002] A submersible motor is a device that provides power for underwater operations. It is combined with a submersible electric pump to dive into underground water or in rivers, lakes, oceans and other water environments. The application number CN201710319863.9 has been retrieved. It is a highly sealed submersible motor, which is characterized in that the cover seals the magnet and the main shaft, and water and moisture cannot enter the motor along the main shaft; there is no contact between the magnet and the cover, and the cover will not wear, effectively maintaining the sealing and safety performance of the motor.

[0003] Similar to the above-mentioned high-seal submersible motor: although there is no contact between the magnet and the cover, the cover will not wear, effectively maintaining the sealing and safety performance of the motor, but first of all, when the submersible motor is operating underwater, the underwater pressure acts on the motor, and it does not have a voltage regulation function, which can easily cause damage to the motor and affect the service life of the motor. Secondly, when the submersible motor is lowered into sewage during use, the submersible motor will swing during the lowering and taking out process, and it is easy to collide with the side wall of the pool, causing vibration and damage to the motor.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a submersible motor is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a submersible motor to solve the problem of the above-mentioned high-seal submersible motor proposed in the above-mentioned background technology. Firstly, when the submersible motor is operating underwater, the underwater pressure acts on the motor, and it has no voltage regulating function, which can easily cause damage to the motor and affect the service life of the motor. Secondly, when the submersible motor is lowered into sewage during use, the submersible motor will swing during the lowering and taking out process, and it is easy to collide with the side wall of the pool, causing vibration and thus damaging the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a submersible motor, comprising a casing, a rotor shaft and a rotor, wherein the rotor shaft is arranged through the middle part of the casing, the rotor is sleeved on the middle outer wall of the rotor shaft, a stator is arranged on the inner wall of the casing, and a rubber seal is provided between the winding of the stator and the inner wall of the casing.

[0007] Furthermore, a front bearing seat is connected to one side of the top of the casing by fixing bolts, the front bearing seat and the rotor shaft are connected by a ball bearing, a bearing cover is provided on the side of the front bearing seat away from the ball bearing by bolts, a sealing tool is provided between the bearing cover and the middle of the front bearing seat, and the bottom end of the rotor shaft is connected to the casing by a bottom bearing.

[0008] Furthermore, a pressure-regulating membrane is connected to the inner wall of the bottom end of the casing by bolts, and the pressure-regulating membrane is made of rubber. A spring is arranged on the side of the pressure-regulating membrane close to the inner wall of the casing, and the end of the spring away from the pressure-regulating membrane is in contact with the inner wall of the casing. Water inlet holes are arranged on the outer wall of the bottom end of the casing, and a sealing sleeve is arranged on one side of the pressure-regulating membrane, and a waterproof cable is arranged inside the sealing sleeve.

[0009] Furthermore, a leakage sensor is provided on one side of the inner wall of the front bearing seat, an alarm is provided on one side of the leakage sensor, the leakage sensor and the alarm are connected by an electric wire, and a protective shell is provided on the outer wall of the casing.

[0010] Furthermore, a buffer mechanism is provided between the protective shell and the casing, and the buffer mechanism includes a rebound column, a fixed sleeve, a support spring and a damping ring. A fixed sleeve is provided at the bottom of the rebound column, and the rebound column is inserted into the interior of the fixed sleeve.

[0011] Furthermore, the bottom end of the rebound column is connected to a support spring, the bottom end of the support spring is connected to the bottom inner wall of the fixed sleeve, and the outer wall of the rebound column close to the fixed sleeve is connected to a damping ring, and the outer wall of the damping ring is in contact with the inner wall of the fixed sleeve.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a submersible motor uses a pressure regulating membrane to retract to different degrees according to the pressure under different water depths, thereby regulating the internal and external pressures of the motor, avoiding damage and leakage caused by excessive pressure difference between the inside and outside of the motor, and using a buffer mechanism to avoid internal vibration caused by collision of the submersible motor, thereby causing damage to the motor. The specific contents are as follows:

[0013] The inner wall of the bottom end of the casing is connected with a pressure-regulating membrane by bolts. The pressure-regulating membrane is made of rubber. The pressure-regulating membrane retracts to different degrees according to the pressure under different water depths. A spring is arranged on the side of the pressure-regulating membrane close to the inner wall of the casing. The spring rebounds under pressure to improve the resilience of the pressure-regulating membrane. The end of the spring away from the pressure-regulating membrane abuts against the inner wall of the casing. The elastic deformation of the pressure-regulating membrane plays a role in regulating the internal and external pressures of the motor to avoid damage and leakage caused by excessive pressure difference between the inside and outside of the motor. A buffer mechanism is arranged between the protective shell and the casing to prevent internal shock caused by collision of the submersible motor. The buffer mechanism includes a rebound column, a fixed sleeve, a support spring and a damping ring. The bottom end of the rebound column is connected to a support spring, and the bottom end of the support spring is connected to The inner wall of the bottom end of the fixed sleeve and the outer wall of the rebound column close to the fixed sleeve are arranged and connected with a damping ring, and the outer wall of the damping ring is in contact with the inner wall of the fixed sleeve. When the submersible motor collides and vibrates during the lowering and removal process, the rebound column slides downward into the fixed sleeve, and the support spring at the bottom end of the rebound column plays a shock-absorbing role. After buffering, the support spring drives the rebound column to rebound upward, and a certain resistance is generated by the friction between the damping ring on the surface of the rebound column and the inner wall of the fixed sleeve to suppress the vibration of the support spring when it rebounds after absorbing the shock, thereby achieving a shock-absorbing effect, avoiding the submersible motor from swinging and colliding with the side walls of the sewage pool and sewage channel during the lowering and removal of the submersible motor, thereby damaging the inside of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a submersible motor of the utility model;

[0015] Figure 2 This is a schematic diagram of the front view structure of a submersible motor of the utility model;

[0016] Figure 3 This is a schematic diagram of the top view of a submersible motor of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the structure of a submersible motor buffer mechanism.

[0018] In the figure: 1. casing; 2. rotor shaft; 3. rotor; 4. stator; 5. sealing glue; 6. front bearing seat; 7. fixing bolt; 8. ball bearing; 9. bearing cover; 10. sealing tool; 11. bottom bearing; 12. pressure regulating membrane; 13. spring; 14. water inlet hole; 15. sealing sleeve; 16. waterproof cable; 17. leakage sensor; 18. alarm; 19. protective shell; 20. buffer mechanism; 21. rebound column; 22. fixing sleeve; 23. support spring; 24. damping ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a submersible motor, including a casing 1, a rotor shaft 2 and a rotor 3. The rotor shaft 2 is penetrated through the middle of the casing 1, and the rotor shaft 2 can rotate in the casing 1 through a bearing. The rotor 3 is sleeved on the outer wall of the middle part of the rotor shaft 2. The rotor 3 can rotate with the rotation of the rotor shaft 2 to transfer energy and generate torque. The inner wall of the casing 1 is arranged with a stator 4. The stator 4 has the function of fixing the motor and generating a magnetic field. The rotor 3 rotates inside the stator 4 and interacts with the stator 4 through the magnetic field to transfer energy. The magnetic field on the rotor 3 interacts with the magnetic field on the stator 4 to generate torque, so that the motor rotates. A rubber seal 5 is provided between the winding of the stator 4 and the inner wall of the casing 1. The rubber seal 5 plays a connecting role and conducts the heat generated by the submersible motor to the outer wall of the casing 1, thereby improving the heat dissipation of the motor.

[0021] A front bearing seat 6 is connected to one side of the top of the casing 1 through a fixing bolt 7, and a sealant is applied to the fixing bolt 7. The front bearing seat 6 is connected to the rotor shaft 2 through a ball bearing 8, and the ball bearing 8 allows the bearing rotor shaft 2 to rotate in the casing 1. A bearing cover 9 is provided on the side of the front bearing seat 6 away from the ball bearing 8 through bolts, and a sealing tool 10 is provided between the bearing cover 9 and the middle of the front bearing seat 6, and the sealing tool 10 plays a sealing role. The bottom end of the rotor shaft 2 is connected to the casing 1 through a bottom bearing 11, and the bottom bearing 11 and the ball bearing 8 are in the same straight line so that the rotor shaft 2 rotates smoothly.

[0022] A pressure regulating membrane 12 is connected to the inner wall of the bottom end of the casing 1 by bolts. The pressure regulating membrane 12 is made of rubber. The pressure regulating membrane 12 retracts to different degrees according to the pressure depth of water. A spring 13 is arranged on the side of the pressure regulating membrane 12 close to the inner wall of the casing 1. The spring 13 rebounds under pressure to improve the resilience of the pressure regulating membrane 12. The end of the spring 13 away from the pressure regulating membrane 12 abuts against the inner wall of the casing 1. The elastic deformation of the pressure regulating membrane 12 plays a role in regulating the internal and external pressures of the motor to avoid damage and leakage caused by excessive pressure difference between the inside and outside of the motor. Water inlet holes 14 are arranged on the outer wall of the bottom end of the casing 1, and a sealing sleeve 15 is arranged on one side of the pressure regulating membrane 12. The sealing sleeve 15 plays a sealing role. A waterproof cable 16 is arranged inside the sealing sleeve 15. The waterproof cable 16 is used to connect the motor with external equipment.

[0023] A leakage sensor 17 is arranged on one side of the inner wall of the front bearing seat 6. The model of the leakage sensor 17 is K7L-AT50. The leakage sensor 17 can detect whether there is liquid leakage inside the motor. An alarm 18 is arranged on one side of the leakage sensor 17. The alarm 18 can sound an alarm to remind the submersible motor of leakage. The leakage sensor 17 and the alarm 18 are connected by wires. After the leakage sensor 17 detects the leakage of the motor, the signal is transmitted to the alarm 18 through the wires. The alarm 18 sounds an alarm to remind the staff of the motor leakage so as to carry out maintenance in time. The outer wall of the casing 1 is provided with a protective shell 19, which plays a protective role.

[0024] A buffer mechanism 20 is arranged between the protective shell 19 and the casing 1. The buffer mechanism 20 prevents the submersible motor from colliding and causing internal vibration. The buffer mechanism 20 includes a rebound column 21, a fixed sleeve 22, a support spring 23 and a damping ring 24. A fixed sleeve 22 is provided at the bottom of the rebound column 21. The rebound column 21 is inserted into the interior of the fixed sleeve 22, and the rebound column 21 can move in the fixed sleeve 22.

[0025] The bottom end of the rebound column 21 is connected to a supporting spring 23, and the bottom end of the supporting spring 23 is connected to the inner wall of the bottom end of the fixed sleeve 22. A damping ring 24 is arranged and connected to the outer wall of the rebound column 21 close to the fixed sleeve 22, and the outer wall of the damping ring 24 fits with the inner wall of the fixed sleeve 22. When collision and vibration occur during the lowering and removal of the submersible motor, the rebound column 21 slides downward into the fixed sleeve 22, and the supporting spring 23 at the bottom end of the rebound column 21 plays a shock-absorbing role. After buffering, the supporting spring 23 drives the rebound column 21 to rebound upward, and a certain resistance is generated by the friction between the damping ring 24 on the surface of the rebound column 21 and the inner wall of the fixed sleeve 22 to suppress the vibration of the supporting spring 23 when it rebounds after shock absorption, thereby playing a shock-absorbing effect, and avoiding the submersible motor from swinging and colliding with the side walls of the sewage pool and sewage channel during the lowering and removal of the submersible motor, thereby damaging the inside of the motor.

[0026] Working principle: When using a submersible motor, the output end of the rotor shaft 2 is connected to the pump, and the rotor 3 can rotate with the rotation of the rotor shaft 2 to transfer energy and generate torque. The stator 4 has the function of fixing the motor and generating a magnetic field. The rotor 3 rotates inside the stator 4 and interacts with the stator 4 through the magnetic field, thereby transferring energy. The magnetic field on the rotor 3 interacts with the magnetic field on the stator 4 to generate torque, causing the motor to rotate. The rubber seal 5 plays a connecting role, conducting the heat generated by the submersible motor to the outer wall of the casing 1, thereby improving the heat dissipation of the motor. The sealing tool 10 plays a sealing role. The bottom bearing 11 and the ball bearing 8 are in the same straight line to enable the rotor shaft 2 to rotate smoothly. The pressure regulating membrane 12 retracts to different degrees according to the pressure under different water depths, thereby regulating the internal and external pressures of the motor to avoid damage caused by excessive pressure difference between the inside and outside of the motor. The leakage sensor 17 detects leakage from the motor and transmits the signal to the alarm 18 through the wire. The alarm 18 sends out an alarm to remind the staff of motor leakage so that maintenance can be carried out in time. The protective shell 19 plays a protective role. When collision and vibration occur during the lowering and removal of the submersible motor, the rebound column 21 slides downward into the fixed sleeve 22, and the support spring 23 at the bottom of the rebound column 21 plays a shock absorbing role. After buffering, the support spring 23 drives the rebound column 21 to rebound upward, and a certain resistance is generated by the friction between the damping ring 24 on the surface of the rebound column 21 and the inner wall of the fixed sleeve 22 to suppress the vibration of the support spring 23 when it rebounds after shock absorption, thereby playing a shock absorbing effect, avoiding the submersible motor from swinging and colliding with the side walls of the sewage pool and sewage channel during the lowering and removal of the submersible motor, thereby damaging the inside of the motor.

[0027] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A submersible motor, comprising a housing (1), a rotor shaft (2) and a rotor (3), characterized in that: A rotor shaft (2) is provided through the middle of the casing (1), the rotor (3) is sleeved on the outer wall of the middle of the rotor shaft (2), a stator (4) is arranged on the inner wall of the casing (1), and a rubber seal (5) is provided between the winding of the stator (4) and the inner wall of the casing (1).

2. A submersible motor according to claim 1, characterized in that: A front bearing seat (6) is connected to one side of the top of the casing (1) via a fixing bolt (7); the front bearing seat (6) and the rotor shaft (2) are connected via a ball bearing (8); a bearing cover (9) is provided on the side of the front bearing seat (6) away from the ball bearing (8) via bolts; a sealing tool (10) is provided between the bearing cover (9) and the middle of the front bearing seat (6); and the bottom end of the rotor shaft (2) and the casing (1) are connected via a bottom bearing (11).

3. A submersible motor according to claim 1, characterized in that: A pressure regulating membrane (12) is connected to the inner wall of the bottom end of the casing (1) via bolts. The pressure regulating membrane (12) is made of rubber. A spring (13) is arranged on the side of the pressure regulating membrane (12) close to the inner wall of the casing (1). An end of the spring (13) away from the pressure regulating membrane (12) abuts against the inner wall of the casing (1). Water inlet holes (14) are arranged on the outer wall of the bottom end of the casing (1). A sealing sleeve (15) is arranged on one side of the pressure regulating membrane (12). A waterproof cable (16) is arranged inside the sealing sleeve (15).

4. A submersible motor according to claim 2, characterized in that: A leakage sensor (17) is provided on one side of the inner wall of the front bearing seat (6), an alarm (18) is provided on one side of the leakage sensor (17), the leakage sensor (17) and the alarm (18) are connected via an electric wire, and a protective shell (19) is provided on the outer wall of the housing (1).

5. A submersible motor according to claim 4, characterized in that: A buffer mechanism (20) is provided between the protective shell (19) and the housing (1), the buffer mechanism (20) comprising a rebound column (21), a fixed sleeve (22), a support spring (23) and a damping ring (24), the bottom of the rebound column (21) being provided with a fixed sleeve (22), the rebound column (21) being inserted into the interior of the fixed sleeve (22).

6. A submersible motor according to claim 5, characterized in that: The bottom end of the rebound column (21) is connected to a support spring (23), and the bottom end of the support spring (23) is connected to the bottom inner wall of the fixed sleeve (22). A damping ring (24) is arranged and connected to the outer wall of one side of the rebound column (21) close to the fixed sleeve (22), and the outer wall of the damping ring (24) is in contact with the inner wall of the fixed sleeve (22).

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