Magnetic drive pump with precise metering function

Abstract

This utility model relates to the field of metering-driven pump technology, and discloses a magnetically driven pump with precise metering function. It includes a housing, a motor fixedly connected to the inner wall of the housing, a frequency converter fixedly connected to the left side of the outer wall of the motor, a housing fixedly connected to the output end of the motor, a bracket fixedly connected to the inner wall of the housing, an internal gear ring formed on the inner wall of the bracket, an input shaft rotatably connected to the left side of the outer wall of the bracket, a sun gear fixedly connected to the right side of the input shaft, planetary gears meshing with the outer wall of the sun gear, and a connecting column fixedly connected to the center of the outer wall of the planetary gears. In this utility model, the rotation of the motor drives the sun gear to rotate, which in turn drives the planetary gears to rotate on the internal gear ring, improving the linearity of the rotational speed, reducing metering errors, refining the flow rate adjustment range, adapting to small flow rate adjustment needs, improving torque stability, increasing adjustment efficiency, and expanding the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of metering drive pump technology, and in particular to a magnetic drive pump with precise metering function. Background Technology

[0002] Magnetic drive pumps are leak-free fluid transport devices that transmit power through magnetic coupling. Their advantage lies in solving the problem of media leakage caused by mechanical seal failure in traditional pumps. They are widely used in scenarios involving the transport of hazardous, valuable, and corrosive media. The pump consists of a casing and impeller, which are responsible for the intake, pressurization, and discharge of the media. The impeller's centrifugal force transports the media from the intake end to the discharge end. Power transmission does not require mechanical contact. With increasingly stringent environmental and safety requirements, market demand continues to grow.

[0003] Magnetic drive pumps are leak-free industrial conveying devices. Their technical essence is to replace mechanical contact transmission with non-contact transmission of magnetic fields. Traditional magnetic pumps can usually only adjust the flow rate by changing the motor speed. However, the flow rate of a centrifugal pump is related to the square of the speed, resulting in poor adjustment accuracy in the small flow range. The power transmission of traditional magnetic pumps relies on the magnetic field coupling of the inner and outer magnetic rotors. This non-contact transmission method introduces additional metering errors. When there is slight jamming in the pump, the inner and outer magnetic rotors may slip, causing the actual speed of the impeller to be lower than the motor speed. This makes it difficult to adjust the small flow rate effectively, thus reducing the applicable range. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a magnetically driven pump with precise metering function, aiming to improve the problems of large influence of medium viscosity, single and crude adjustment method, magnetic slip phenomenon, magnetic loss fluctuation and high cost in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a magnetically driven pump with precise metering function, comprising a housing, a motor fixedly connected to the inner wall of the housing, a base fixedly connected to the bottom of the housing, a housing fixedly connected to the output end of the motor, a bracket fixedly connected to the inner wall of the housing, an internal gear ring formed on the inner wall of the bracket, an input shaft rotatably connected to the left side of the outer wall of the bracket, a sun gear fixedly connected to the right side of the input shaft, planetary gears meshing with the outer wall of the sun gear, a connecting column fixedly connected to the middle of the outer wall of the planetary gears, a fixing frame fixedly connected to the outer wall of the connecting column, a rotating shaft fixedly connected to the middle of the outer wall of the fixing frame, a pump body fixedly connected to the right side of the rotating shaft, a ball valve threadedly connected to the right side of the pump body, and a cooling mechanism fixedly connected to the left side of the housing for cooling the magnetically driven pump.

[0006] As a further description of the above technical solution:

[0007] The cooling mechanism includes a fan, a wind-blocking module is fixedly connected to the right side of the fan, an air supply pipe is fixedly connected to the outer wall of the wind-blocking module, a water tank is connected to the right side of the air supply pipe, air inlet pipes are connected to the front and rear sides of the outer wall of the water tank, a fixing plate is fixedly connected to the left side of the housing, a ventilation hole is opened on the outer wall of the fixing plate, and a cooling plate is fixedly connected to the left side of the outer wall of the motor.

[0008] As a further description of the above technical solution:

[0009] A control box is fixedly connected to the middle of the front side of the housing, and a nameplate is fixedly connected to the upper middle of the front side of the housing.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the nameplate is threaded with screws, and the left side of the outer wall of the motor is fixedly connected with a frequency converter.

[0012] As a further description of the above technical solution:

[0013] A support column is fixedly connected to the bottom of the base, and multiple sealing rings are fixedly connected to the left and right sides of the inner wall of the ball valve.

[0014] As a further description of the above technical solution:

[0015] A manual valve is fixedly connected to the top of the outer wall of the air intake pipe, and a top cover is fixedly connected to the top of the water tank.

[0016] As a further description of the above technical solution:

[0017] A handle is fixedly connected to the top of the top cover, and a water inlet is provided on the inner wall of the top cover.

[0018] As a further description of the above technical solution:

[0019] A filter screen is fixedly connected to the outer wall of the water inlet, and an injection pipe is fixedly connected to the outer wall of the filter screen.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the rotation of the motor drives the sun gear to rotate, which in turn drives the planet gears to rotate on the internal gear ring. This improves the linearity of the rotation speed, reduces measurement errors, refines the flow rate adjustment range, adapts to the needs of small flow rate adjustment, improves torque stability, increases adjustment efficiency, and expands the scope of application.

[0022] 2. In this utility model, a fan delivers cold air into the housing through the air inlet pipe, and the cooling plate is activated to keep the housing temperature constant, protecting the magnetism of the magnet, maintaining power transmission efficiency, preventing leakage risk, extending service life, and reducing mechanical wear. Attached Figure Description

[0023] Figure 1 This is a front perspective view of the magnetically driven pump with precise metering function proposed in this utility model.

[0024] Figure 2 This is a partial structural diagram of the motor of the magnetically driven pump with precise metering function proposed in this utility model.

[0025] Figure 3 This is a partial structural exploded view of the internal gear ring of the magnetically driven pump with precise metering function proposed in this utility model.

[0026] Figure 4 This is a partial structural exploded view of the ball valve of the magnetically driven pump with precise metering function proposed in this utility model.

[0027] Figure 5 This is a partial structural breakdown of the water tank of the magnetically driven pump with precise metering function proposed in this utility model.

[0028] Legend:

[0029] 1. Housing; 2. Cooling mechanism; 201. Fan; 202. Windbreak module; 203. Air supply pipe; 204. Water tank; 205. Air inlet pipe; 206. Fixing plate; 207. Ventilation hole; 208. Cooling element; 3. Motor; 4. Frequency converter; 5. Housing; 6. Bracket; 7. Internal gear ring; 8. Input shaft; 9. Sun gear; 10. Planetary gear; 11. Fixing bracket; 12. Rotating shaft; 13. Pump body; 14. Ball valve; 15. Control box; 16. Nameplate; 17. Screw; 18. Base; 19. Support column; 20. Manual valve; 21. Sealing ring; 22. Top cover; 23. Handle; 24. Water inlet; 25. Filter screen; 26. Liquid injection pipe; 27. Connecting column. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3An embodiment of this utility model provides a magnetic drive pump with precise metering function, including a housing 1, a motor 3 fixedly connected to the inner wall of the housing 1, a base 18 fixedly connected to the bottom of the housing 1, a housing 5 fixedly connected to the output end of the motor 3, a bracket 6 fixedly connected to the inner wall of the housing 5, an internal gear ring 7 opened on the inner wall of the bracket 6, an input shaft 8 rotatably connected to the left side of the outer wall of the bracket 6, a sun gear 9 fixedly connected to the right side of the input shaft 8, a planetary gear 10 meshing with the outer wall of the sun gear 9, a connecting column 27 fixedly connected to the middle of the outer wall of the planetary gear 10, a fixing frame 11 fixedly connected to the outer wall of the connecting column 27, a rotating shaft 12 fixedly connected to the middle of the outer wall of the fixing frame 11, a pump body 13 fixedly connected to the right side of the rotating shaft 12, a ball valve 14 threadedly connected to the right side of the pump body 13, and a cooling mechanism 2 fixedly connected to the left side of the housing 1. The cooling mechanism 2 is used to cool the magnetic drive pump.

[0032] Specifically, the magnetically driven pump with precise metering function uses the housing 1 as the overall support frame, with the motor 3 fixed to its inner wall, ensuring the stability of the motor 3 during operation and providing power for metering. The left side of the outer wall of the motor 3 is fixedly connected to the frequency converter 4, which can flexibly adjust the output frequency of the motor 3 according to real-time metering requirements, thereby achieving speed control and ensuring that the power output matches the flow metering requirements. The output end of the motor 3 is connected to the housing 5, and the interior of the housing 5 forms the transmission space. The bracket 6 fixed to the inner wall of the housing 5 not only provides support for the internal components, but the internal gear ring 7 opened on its inner wall is also a fixed component of the planetary transmission system. Through meshing with the planetary gears 10, it lays the foundation for transmission. The left side of the outer wall of the bracket 6 is rotatably connected to the input shaft 8, which smoothly transmits the power of the motor 3 to the sun gear 9 fixedly connected to the right side. The sun gear 9, as the driving component of the transmission, rotates and drives the surrounding planetary gears 10 to move synchronously through gear meshing. The connecting column 27, fixedly connected to the middle of the outer wall of the 10, integrates multiple planetary gears 10 into a whole, ensuring balanced force during transmission. The fixed bracket 11, fixed to the outer wall of the connecting column 27, rotates synchronously with the planetary gears 10. The rotating shaft 12, fixed to the middle of its outer wall, becomes the power output component, transmitting the stable power after deceleration to the pump body 13 on the right. This design not only improves transmission efficiency but also reduces speed fluctuations, providing a power source for the stable delivery of the pump body 13. As the delivery component, the pump body 13 has an optimized internal flow channel design, which can reduce losses during the medium flow process and improve the stability of flow output. The right side of the pump body 13 is connected to the ball valve 14 by a thread. The cooling mechanism 2, fixedly connected to the left side of the housing 1, cools the heat-generating parts of the motor 3, transmission components, and pump body 13 through a specific cooling medium circulation and heat dissipation structure, avoiding component performance degradation due to excessive temperature and ensuring the stability of metering.

[0033] Please see the appendix Figure 1 and attached Figure 5 The cooling mechanism 2 includes a fan 201, a wind-blocking module 202 fixedly connected to the right side of the fan 201, an air supply pipe 203 fixedly connected to the outer wall of the wind-blocking module 202, a water tank 204 connected to the right side of the air supply pipe 203, and air inlet pipes 205 connected to the front and rear sides of the outer wall of the water tank 204. A fixing plate 206 is fixedly connected to the left side of the housing 1, and a ventilation hole 207 is opened on the outer wall of the fixing plate 206. A cooling plate 208 is fixedly connected to the left side of the outer wall of the motor 3.

[0034] Specifically, the cooling mechanism 2, as a system to ensure the stable operation of the magnetically driven pump, achieves heat dissipation through the cooperation of components. The fan 201 continuously rotates to generate airflow, providing power for the entire cooling cycle. The right side of the fan 201 is fixedly connected to the airflow obstruction module 202, which guides and diverts the airflow generated by the fan 201, ensuring stable airflow delivery along a path and avoiding heat dissipation efficiency loss due to turbulence. The outer wall of the airflow obstruction module 202 is connected to an air supply pipe 203, which introduces the regulated airflow into the water tank 204 connected to the right side. The coolant stored in the water tank 204 exchanges heat with the airflow, absorbing the heat carried by the airflow and lowering the temperature of the incoming airflow. Air inlet pipes 205 are connected to both the front and rear sides of the outer wall of the water tank 204, further enhancing cooling efficiency. The circulation is stable. The fixed plate 206 on the left side of the housing 1 has ventilation holes 207 on its outer wall, which form an airflow channel. The airflow, cooled by the water tank 204, enters the interior of the housing 1 through the ventilation holes 207 and flows to the motor 3 and the housing 5 to cool these components and remove the heat generated during operation. In addition, the cooling plate 208 fixed on the left side of the outer wall of the motor 3 plays an auxiliary cooling role. The cooling plate 208 contacts the outer shell of the motor 3 and absorbs the heat generated by the operation of the motor 3. The entire cooling mechanism 2, through the air supply of the fan 201, the cooperation of the wind-blocking module 202 and the water tank 204, the airflow guidance of the ventilation holes 207 and the auxiliary cooling of the cooling plate 208, can cover the motor 3, transmission components and pump body 13, control the operating temperature of the equipment and ensure the function of the magnetic drive pump.

[0035] Please see the appendix Figure 1 and attached Figure 4 A control box 15 is fixedly connected to the middle of the front side of the housing 1. A nameplate 16 is fixedly connected to the upper middle of the front side of the housing 1. A screw 17 is threadedly connected to the inner wall of the nameplate 16. A frequency converter 4 is fixedly connected to the left side of the outer wall of the motor 3. A support column 19 is fixedly connected to the bottom of the base 18. Multiple sealing rings 21 are fixedly connected to the left and right sides of the inner wall of the ball valve 14.

[0036] Specifically, a control box 15 is fixedly connected to the center of the front side of the housing 1. Operators can use the control box 15 to start / stop the motor 3 and adjust its speed. Simultaneously, they can monitor the operation of the frequency converter 4 and the working status of the cooling mechanism 2 in real time. A nameplate 16 is fixedly connected to the upper center of the front side of the housing 1, clearly indicating the equipment information. The nameplate 16 is fixed to the housing 1 by screws 17 threaded onto the inner wall, which can withstand impacts during daily use and facilitate disassembly and replacement when needed. For operators, the information on the nameplate 16 is crucial for understanding equipment performance and standardizing operating procedures, helping to avoid measurement errors and equipment damage caused by misoperation. A frequency converter 4 is fixedly connected to the left side of the outer wall of the motor 3, forming a control relationship with the control box 15. The frequency converter 4 can adjust the power supply frequency of the motor 3 according to the instructions issued by the control box 15, thereby regulating the speed of the motor 3. The sectionalizing method allows the power output of motor 3 to match the metering requirements of pump body 13. Especially when dealing with metering tasks with different flow rates, the flow output can be made uniform through the regulation of frequency converter 4. The support column 19 fixedly connected to the bottom of base 18 provides stable support for the entire equipment. The support column 19 distributes the weight of the equipment, effectively reducing the displacement caused by vibration during operation, ensuring that the housing 1 and internal components are in a horizontal state, avoiding transmission deviation caused by equipment tilt and uneven distribution of coolant in cooling mechanism 2, and improving heat dissipation efficiency. The sealing ring 21 fixedly connected to the right side of the inner wall of ball valve 14 can effectively block the leakage channel of the medium when the ball valve 14 is adjusting the flow rate, ensuring that the medium can pass through according to the set flow rate at different opening degrees, avoiding metering errors caused by leakage. At the same time, the sealing ring 21 can also extend the service life of ball valve 14 and ensure the stability of long-term metering.

[0037] Please see the appendix Figure 1 and attached Figure 5 A manual valve 20 is fixedly connected to the top of the outer wall of the air inlet pipe 205. A top cover 22 is fixedly connected to the top of the water tank 204. A handle 23 is fixedly connected to the top of the top cover 22. A water inlet 24 is opened on the inner wall of the top cover 22. A filter screen 25 is fixedly connected to the outer wall of the water inlet 24. A liquid injection pipe 26 is fixedly connected to the outer wall of the filter screen 25.

[0038] Specifically, a manual valve 20 is fixedly connected to the top of the outer wall of the air inlet pipe 205. Operators can control the flow of external cold air into the water tank 204 by rotating the knob of the manual valve 20. When the equipment's heat dissipation demand is low, the manual valve 20 can be closed slightly to reduce airflow input and avoid energy waste due to overcooling. When the equipment's heat dissipation demand is high, the manual valve 20 can be opened wider to introduce more cold air, making the cooling effect compatible with the equipment's operating status. The top cover 22, fixedly connected to the top of the water tank 204, not only protects the inside of the water tank 204 from external dust and impurities entering the coolant and affecting the heat dissipation effect, but also provides convenience for the maintenance and operation of the water tank 204. The top of the top cover 22 has a handle 23 fixedly connected to it, and a water inlet 24 is opened on the inner wall of the top cover 22. This is the channel for replenishing coolant to the water tank 204. The filter screen 25, which is fixedly connected to the outer wall of the water inlet 24, can effectively filter out impurities that may be contained in the injected coolant, preventing these contaminants from entering the water tank 204 and settling at the bottom, thus improving the purity of the coolant. The injection pipe 26, which is fixedly connected to the outer wall of the filter screen 25, allows the coolant to flow smoothly into the water tank 204 along the injection pipe 26, so that the entire cooling system can maintain heat dissipation capacity while having operational flexibility and maintenance convenience. The motor 3 is model AMS130-M0425, which provides power for the operation of the equipment. The frequency converter 4 is model ACS580-01-02A7-4, which controls the speed of the motor 3. The fan 201 is model HES17110LU-A, which provides the heat dissipation power source for the cooling mechanism 2.

[0039] Working principle: When precise metering of the magnetically driven pump is required, the pump is first started via control box 15. This starts motor 3. Since the output of motor 3 is connected to input shaft 8, its operation drives input shaft 8 to rotate clockwise. Sun gear 9 is fixedly connected to input shaft 8, so the rotation of input shaft 8 drives sun gear 9 to rotate counter-clockwise. Sun gear 9 meshes with planet gears 10. Driven by sun gear 9, planet gears 10 rotate counter-clockwise around their own axes. Because the outer internal gear ring 7 is fixed, it restricts the outward movement of planet gears 10. While rotating on their own axis, planet gears 10 are forced to rotate around sun gear 9. The sun gear 9 revolves clockwise, driving the fixed frame 11 to rotate synchronously. The fixed frame 11 is connected to the rotating shaft 12, ultimately transmitting power to the pump body 13. The planetary reducer has high output torque characteristics, which can amplify the output torque of the motor 3, ensuring sufficient driving torque at low speeds and avoiding magnetic slippage and stalling caused by fluctuations. At the same time, the frequency converter 4 can adjust the speed of the motor 3 in real time according to actual conditions, so that the motor 3 runs at a stable speed, reducing errors. The ball valve 14 can manually adjust the flow rate, determining the required flow rate as needed, avoiding metering discrepancies caused by excessive adjustment steps, and improving metering accuracy.

[0040] When the magnetically driven pump is needed for cooling, the coolant is first poured into the water tank 204 through the injection pipe 26. The fan 201 is then started. With the cooperation of the wind-blocking module 202, the fan 201 can stably deliver air into the air supply pipe 203. The air is cooled by the coolant in the water tank 204. Then, under the action of the fan 201, the cooled air is delivered into the air intake pipe 205 to cool the motor 3. The manual valve 20 can adjust the delivery efficiency. At the same time, the cooling plate 208 is started. Under the action of the cooling plate 208, the temperature of the housing 1 is kept constant. The ventilation hole 207 can ventilate the motor 3, which helps to reduce the temperature of the motor 3.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic drive pump with precise metering function, comprising a shell (1), characterized in that: A motor (3) is fixedly connected to the inner wall of the housing (1), a base (18) is fixedly connected to the bottom of the housing (1), a housing (5) is fixedly connected to the output end of the motor (3), a bracket (6) is fixedly connected to the inner wall of the housing (5), an internal gear ring (7) is provided on the inner wall of the bracket (6), an input shaft (8) is rotatably connected to the left side of the outer wall of the bracket (6), a sun gear (9) is fixedly connected to the right side of the input shaft (8), and a planet gear (1) is meshed with the outer wall of the sun gear (9). 0), a connecting column (27) is fixedly connected to the middle of the outer wall of the planetary gear (10), a fixing frame (11) is fixedly connected to the outer wall of the connecting column (27), a rotating shaft (12) is fixedly connected to the middle of the outer wall of the fixing frame (11), a pump body (13) is fixedly connected to the right side of the rotating shaft (12), a ball valve (14) is threadedly connected to the right side of the inner wall of the pump body (13), and a cooling mechanism (2) is fixedly connected to the left side of the housing (1). The cooling mechanism (2) is used to cool the magnetically driven pump.

2. The magnetic drive pump with precision metering function according to claim 1, characterized in that: The cooling mechanism (2) includes a fan (201), a wind-blocking module (202) is fixedly connected to the right side of the fan (201), an air supply pipe (203) is fixedly connected to the outer wall of the wind-blocking module (202), a water tank (204) is connected to the right side of the air supply pipe (203), an air inlet pipe (205) is connected to the front and rear sides of the outer wall of the water tank (204), a fixing plate (206) is fixedly connected to the left side of the housing (1), a ventilation hole (207) is opened on the outer wall of the fixing plate (206), and a cooling chip (208) is fixedly connected to the left side of the outer wall of the motor (3).

3. The magnetically driven pump with precise metering function according to claim 1, characterized in that: A control box (15) is fixedly connected to the middle of the front side of the housing (1), and a nameplate (16) is fixedly connected to the upper middle of the front side of the housing (1).

4. The magnetic drive pump with precision metering function according to claim 3, characterized in that: The inner wall of the nameplate (16) is threaded with screws (17), and the left side of the outer wall of the motor (3) is fixedly connected with a frequency converter (4).

5. The magnetic drive pump with precision metering function according to claim 1, characterized in that: The base (18) is fixedly connected to a support column (19), and multiple sealing rings (21) are fixedly connected to the left and right sides of the inner wall of the ball valve (14).

6. The magnetic drive pump with precision metering function according to claim 2, characterized in that: A manual valve (20) is fixedly connected to the top of the outer wall of the air inlet pipe (205), and a top cover (22) is fixedly connected to the top of the water tank (204).

7. The magnetically driven pump with precise metering function according to claim 6, characterized in that: The top of the top cover (22) is fixedly connected to a handle (23), and the inner wall of the top cover (22) is provided with a water inlet (24).

8. The magnetic drive pump with precision metering function according to claim 7, characterized in that: A filter screen (25) is fixedly connected to the outer wall of the water inlet (24), and an injection pipe (26) is fixedly connected to the outer wall of the filter screen (25).

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